Initial community commit

44 files changed, 10380 insertions, 0 deletions

diff --git a/Src/external_dependencies/cpr/test/CMakeLists.txt b/Src/external_dependencies/cpr/test/CMakeLists.txt
new file mode 100644
index 00000000..d84044ff
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/CMakeLists.txt
@@ -0,0 +1,80 @@
+cmake_minimum_required(VERSION 3.15)

+

+find_package(Threads REQUIRED)

+

+if (ENABLE_SSL_TESTS)

+    add_library(test_server STATIC

+                abstractServer.cpp

+                httpServer.cpp

+                httpsServer.cpp)

+else ()

+    add_library(test_server STATIC

+                abstractServer.cpp

+                httpServer.cpp)

+endif()

+if(WIN32)

+    target_link_libraries(test_server PRIVATE Threads::Threads cpr::cpr GTest::GTest

+                                      PUBLIC mongoose ws2_32 wsock32)

+else()

+    target_link_libraries(test_server PRIVATE Threads::Threads cpr::cpr GTest::GTest

+                                      PUBLIC mongoose)

+endif()

+

+macro(add_cpr_test _TEST_NAME)

+    add_executable(${_TEST_NAME}_tests ${_TEST_NAME}_tests.cpp)

+    target_link_libraries(${_TEST_NAME}_tests PRIVATE

+        test_server

+        GTest::GTest

+        cpr::cpr

+        CURL::libcurl)

+    add_test(NAME cpr_${_TEST_NAME}_tests COMMAND ${_TEST_NAME}_tests)

+    # Group under the "tests" project folder in IDEs such as Visual Studio.

+    set_property(TARGET ${_TEST_NAME}_tests PROPERTY FOLDER "tests")

+    if(WIN32 AND BUILD_SHARED_LIBS)

+        add_custom_command(TARGET ${_TEST_NAME}_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:libcurl> $<TARGET_FILE_DIR:${_TEST_NAME}_tests>)

+        add_custom_command(TARGET ${_TEST_NAME}_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:cpr> $<TARGET_FILE_DIR:${_TEST_NAME}_tests>)

+    endif()

+endmacro()

+

+add_cpr_test(get)

+add_cpr_test(post)

+add_cpr_test(session)

+add_cpr_test(prepare)

+add_cpr_test(async)

+if(CPR_BUILD_TESTS_PROXY)

+    add_cpr_test(proxy)

+    add_cpr_test(proxy_auth)

+endif()

+add_cpr_test(head)

+add_cpr_test(delete)

+add_cpr_test(put)

+add_cpr_test(callback)

+add_cpr_test(raw_body)

+add_cpr_test(options)

+add_cpr_test(patch)

+add_cpr_test(error)

+add_cpr_test(alternating)

+add_cpr_test(util)

+add_cpr_test(structures)

+add_cpr_test(encoded_auth)

+add_cpr_test(version)

+add_cpr_test(download)

+add_cpr_test(interceptor)

+add_cpr_test(multiperform)

+add_cpr_test(resolve)

+

+if (ENABLE_SSL_TESTS)

+    add_cpr_test(ssl)

+    

+    # Install all ssl keys and certs. Explicit copy for each file to prevent issues when copying on Windows.

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E make_directory $<TARGET_FILE_DIR:ssl_tests>/data/certificates $<TARGET_FILE_DIR:ssl_tests>/data/keys)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/certificates/client.crt $<TARGET_FILE_DIR:ssl_tests>/data/certificates/client.crt)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/certificates/root-ca.crt $<TARGET_FILE_DIR:ssl_tests>/data/certificates/root-ca.crt)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/certificates/server.crt $<TARGET_FILE_DIR:ssl_tests>/data/certificates/server.crt)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/keys/client.key $<TARGET_FILE_DIR:ssl_tests>/data/keys/client.key)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/keys/root-ca.key $<TARGET_FILE_DIR:ssl_tests>/data/keys/root-ca.key)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/keys/server.key $<TARGET_FILE_DIR:ssl_tests>/data/keys/server.key)

+    add_custom_command(TARGET ssl_tests POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/data/keys/server.pub $<TARGET_FILE_DIR:ssl_tests>/data/keys/server.pub)

+endif()

+

+file(INSTALL data DESTINATION data)

diff --git a/Src/external_dependencies/cpr/test/LICENSE b/Src/external_dependencies/cpr/test/LICENSE
new file mode 100644
index 00000000..4d188aa7
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/LICENSE
@@ -0,0 +1,677 @@
+This license applies to everything inside this directory and all
+subdirectories.
+
+                     GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+
+  If you convey a covered work, knowingly relying on a patent license,
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+available, or (2) arrange to deprive yourself of the benefit of the
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+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
\ No newline at end of file
diff --git a/Src/external_dependencies/cpr/test/abstractServer.cpp b/Src/external_dependencies/cpr/test/abstractServer.cpp
new file mode 100644
index 00000000..bb8eaeb0
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/abstractServer.cpp
@@ -0,0 +1,143 @@
+#include "abstractServer.hpp"
+
+namespace cpr {
+void AbstractServer::SetUp() {
+    Start();
+}
+
+void AbstractServer::TearDown() {
+    Stop();
+}
+
+void AbstractServer::Start() {
+    should_run = true;
+    serverThread = std::make_shared<std::thread>(&AbstractServer::Run, this);
+    serverThread->detach();
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+    server_start_cv.wait(server_lock);
+}
+
+void AbstractServer::Stop() {
+    should_run = false;
+    std::unique_lock<std::mutex> server_lock(server_mutex);
+    server_stop_cv.wait(server_lock);
+}
+
+static void EventHandler(mg_connection* conn, int event, void* event_data, void* context) {
+    switch (event) {
+        case MG_EV_READ:
+        case MG_EV_WRITE:
+            /** Do nothing. Just for housekeeping. **/
+            break;
+        case MG_EV_POLL:
+            /** Do nothing. Just for housekeeping. **/
+            break;
+        case MG_EV_CLOSE:
+            /** Do nothing. Just for housekeeping. **/
+            break;
+        case MG_EV_ACCEPT:
+            /* Initialize HTTPS connection if Server is an HTTPS Server */
+            static_cast<AbstractServer*>(context)->acceptConnection(conn);
+            break;
+        case MG_EV_CONNECT:
+            /** Do nothing. Just for housekeeping. **/
+            break;
+
+        case MG_EV_HTTP_CHUNK: {
+            /** Do nothing. Just for housekeeping. **/
+        } break;
+
+        case MG_EV_HTTP_MSG: {
+            AbstractServer* server = static_cast<AbstractServer*>(context);
+            server->OnRequest(conn, static_cast<mg_http_message*>(event_data));
+        } break;
+
+        default:
+            break;
+    }
+}
+
+void AbstractServer::Run() {
+    // Setup a new mongoose http server.
+    memset(&mgr, 0, sizeof(mg_mgr));
+    initServer(&mgr, EventHandler);
+
+    // Notify the main thread that the server is up and runing:
+    server_start_cv.notify_all();
+
+    // Main server loop:
+    while (should_run) {
+        // NOLINTNEXTLINE (cppcoreguidelines-avoid-magic-numbers)
+        mg_mgr_poll(&mgr, 100);
+    }
+
+    // Shutdown and cleanup:
+    timer_args.clear();
+    mg_mgr_free(&mgr);
+
+    // Notify the main thread that we have shut down everything:
+    server_stop_cv.notify_all();
+}
+
+static const std::string base64_chars =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        "abcdefghijklmnopqrstuvwxyz"
+        "0123456789+/";
+/**
+ * Decodes the given BASE64 string to a normal string.
+ * Source: https://gist.github.com/williamdes/308b95ac9ef1ee89ae0143529c361d37
+ **/
+std::string AbstractServer::Base64Decode(const std::string& in) {
+    std::string out;
+
+    std::vector<int> T(256, -1);
+    for (size_t i = 0; i < 64; i++)
+        T[base64_chars[i]] = static_cast<int>(i);
+
+    int val = 0;
+    int valb = -8;
+    for (unsigned char c : in) {
+        if (T[c] == -1) {
+            break;
+        }
+        val = (val << 6) + T[c];
+        valb += 6;
+        if (valb >= 0) {
+            out.push_back(char((val >> valb) & 0xFF));
+            valb -= 8;
+        }
+    }
+    return out;
+}
+
+// Sends error similar like in mongoose 6 method mg_http_send_error
+// https://github.com/cesanta/mongoose/blob/6.18/mongoose.c#L7081-L7089
+void AbstractServer::SendError(mg_connection* conn, int code, std::string& reason) {
+    std::string headers{"Content-Type: text/plain\r\nConnection: close\r\n"};
+    mg_http_reply(conn, code, headers.c_str(), reason.c_str());
+}
+
+// Checks whether a pointer to a connection is still managed by a mg_mgr.
+// This check tells whether it is still possible to send a message via the given connection
+// Note that it is still possible that the pointer of an old connection object may be reused by mongoose.
+// In this case, the active connection might refer to a different connection than the one the caller refers to
+bool AbstractServer::IsConnectionActive(mg_mgr* mgr, mg_connection* conn) {
+    mg_connection* c{mgr->conns};
+    while (c) {
+        if (c == conn) {
+            return true;
+        }
+        c = c->next;
+    }
+    return false;
+}
+
+uint16_t AbstractServer::GetRemotePort(const  mg_connection* conn) {
+    return (conn->rem.port >> 8) | (conn->rem.port << 8);
+}
+
+uint16_t AbstractServer::GetLocalPort(const  mg_connection* conn) {
+    return (conn->loc.port >> 8) | (conn->loc.port << 8);
+}
+
+} // namespace cpr
diff --git a/Src/external_dependencies/cpr/test/abstractServer.hpp b/Src/external_dependencies/cpr/test/abstractServer.hpp
new file mode 100644
index 00000000..d2daec26
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/abstractServer.hpp
@@ -0,0 +1,70 @@
+#ifndef CPR_TEST_ABSTRACT_SERVER_SERVER_H
+#define CPR_TEST_ABSTRACT_SERVER_SERVER_H
+
+#include <atomic>
+#include <condition_variable>
+#include <gtest/gtest.h>
+#include <memory>
+#include <mutex>
+#include <string>
+
+#include "cpr/cpr.h"
+#include "mongoose.h"
+
+namespace cpr {
+
+// Helper struct for functions using timers to simulate slow connections
+struct TimerArg {
+    mg_mgr* mgr;
+    mg_connection* connection;
+    unsigned long connection_id;
+    mg_timer timer;
+    unsigned counter;
+
+    explicit TimerArg(mg_mgr* m, mg_connection* c, mg_timer&& t) : mgr{m}, connection{c}, connection_id{0}, timer{t}, counter{0} {}
+
+    ~TimerArg() {
+        mg_timer_free(&mgr->timers, &timer);
+    }
+};
+
+class AbstractServer : public testing::Environment {
+  public:
+    ~AbstractServer() override = default;
+
+    void SetUp() override;
+    void TearDown() override;
+
+    void Start();
+    void Stop();
+
+    virtual std::string GetBaseUrl() = 0;
+    virtual uint16_t GetPort() = 0;
+
+    virtual void acceptConnection(mg_connection* conn) = 0;
+    virtual void OnRequest(mg_connection* conn, mg_http_message* msg) = 0;
+
+  private:
+    std::shared_ptr<std::thread> serverThread{nullptr};
+    std::mutex server_mutex;
+    std::condition_variable server_start_cv;
+    std::condition_variable server_stop_cv;
+    std::atomic<bool> should_run{false};
+
+    void Run();
+
+  protected:
+    mg_mgr mgr{};
+    std::vector<std::unique_ptr<TimerArg>> timer_args{};
+    virtual mg_connection* initServer(mg_mgr* mgr, mg_event_handler_t event_handler) = 0;
+
+    static std::string Base64Decode(const std::string& in);
+    static void SendError(mg_connection* conn, int code, std::string& reason);
+    static bool IsConnectionActive(mg_mgr* mgr, mg_connection* conn);
+
+    static uint16_t GetRemotePort(const mg_connection* conn);
+    static uint16_t GetLocalPort(const mg_connection* conn);
+};
+} // namespace cpr
+
+#endif
diff --git a/Src/external_dependencies/cpr/test/alternating_tests.cpp b/Src/external_dependencies/cpr/test/alternating_tests.cpp
new file mode 100644
index 00000000..d0466f67
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/alternating_tests.cpp
@@ -0,0 +1,163 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(AlternatingTests, PutGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Put(url, payload);
+        std::string expected_text{"Header reflect PUT"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Response response = cpr::Get(url);
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(AlternatingTests, PutGetPutGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Put(url, payload);
+        std::string expected_text{"Header reflect PUT"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Response response = cpr::Get(url);
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Put(url, payload);
+        std::string expected_text{"Header reflect PUT"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Response response = cpr::Get(url);
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(AlternatingTests, HeadGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+
+    {
+        // Head shouldn't return a body
+        Response response = cpr::Head(url);
+        std::string expected_text{""};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Response response = cpr::Get(url);
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(AlternatingTests, PutHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Put(url, payload);
+        std::string expected_text{"Header reflect PUT"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        // Head shouldn't return a body
+        Response response = cpr::Head(url);
+        std::string expected_text{""};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(AlternatingTests, PutPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Put(url, payload);
+        std::string expected_text{"Header reflect PUT"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+
+    {
+        Payload payload{{"x", "5"}};
+        Response response = cpr::Post(url, payload);
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/async_tests.cpp b/Src/external_dependencies/cpr/test/async_tests.cpp
new file mode 100644
index 00000000..c4f15830
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/async_tests.cpp
@@ -0,0 +1,79 @@
+#include <gtest/gtest.h>
+
+#include <string>
+#include <vector>
+
+#include <cpr/cpr.h>
+#include <cpr/filesystem.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+bool write_data(std::string /*data*/, intptr_t /*userdata*/) {
+    return true;
+}
+
+TEST(UrlEncodedPostTests, AsyncGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    cpr::AsyncResponse future = cpr::GetAsync(url);
+    std::string expected_text{"Hello world!"};
+    cpr::Response response = future.get();
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+}
+
+TEST(UrlEncodedPostTests, AsyncGetMultipleTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::GetAsync(url));
+    }
+    for (cpr::AsyncResponse& future : responses) {
+        std::string expected_text{"Hello world!"};
+        cpr::Response response = future.get();
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+    }
+}
+
+TEST(UrlEncodedPostTests, AsyncGetMultipleReflectTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 100; ++i) {
+        Parameters p{{"key", std::to_string(i)}};
+        responses.emplace_back(cpr::GetAsync(url, p));
+    }
+    int i = 0;
+    for (cpr::AsyncResponse& future : responses) {
+        std::string expected_text{"Hello world!"};
+        cpr::Response response = future.get();
+        EXPECT_EQ(expected_text, response.text);
+        Url expected_url{url + "?key=" + std::to_string(i)};
+        EXPECT_EQ(expected_url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        ++i;
+    }
+}
+
+TEST(UrlEncodedPostTests, AsyncDownloadTest) {
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::AsyncResponse future = cpr::DownloadAsync(fs::path{"/tmp/aync_download"}, url, cpr::Header{{"Accept-Encoding", "gzip"}}, cpr::WriteCallback{write_data, 0});
+    cpr::Response response = future.get();
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/callback_tests.cpp b/Src/external_dependencies/cpr/test/callback_tests.cpp
new file mode 100644
index 00000000..834f960a
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/callback_tests.cpp
@@ -0,0 +1,931 @@
+#include <cstddef>
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <cpr/cpr.h>
+
+#include "cpr/cprtypes.h"
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+std::chrono::milliseconds sleep_time{50};
+std::chrono::seconds zero{0};
+
+int status_callback(int& status_code, Response r) {
+    status_code = r.status_code;
+    return r.status_code;
+}
+
+int status_callback_ref(int& status_code, const Response& r) {
+    status_code = r.status_code;
+    return r.status_code;
+}
+
+std::string text_callback(std::string& expected_text, Response r) {
+    expected_text = r.text;
+    return r.text;
+}
+
+std::string text_callback_ref(std::string& expected_text, const Response& r) {
+    expected_text = r.text;
+    return r.text;
+}
+
+TEST(CallbackGetTests, CallbackGetLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::GetCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::GetCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::GetCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::GetCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::GetCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::GetCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::GetCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackGetTests, CallbackGetFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::GetCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    int status_code = 0;
+    auto future = cpr::DeleteCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::string expected_text{};
+    auto future = cpr::DeleteCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    int status_code = 0;
+    auto future = cpr::DeleteCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::string expected_text{};
+    auto future = cpr::DeleteCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::DeleteCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::DeleteCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::DeleteCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackDeleteTests, CallbackDeleteFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::DeleteCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::HeadCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::HeadCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::HeadCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::HeadCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::HeadCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::HeadCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::HeadCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackHeadTests, CallbackHeadFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::HeadCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PostCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PostCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PostCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PostCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PostCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PostCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PostCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPostTests, CallbackPostFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PostCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PutCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PutCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PutCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PutCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PutCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PutCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PutCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPutTests, CallbackPutFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PutCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::OptionsCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::OptionsCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto future = cpr::OptionsCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto future = cpr::OptionsCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::OptionsCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::OptionsCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::OptionsCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackOptionsTests, CallbackOptionsFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::OptionsCallback(callback, url);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchLambdaStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PatchCallback(
+            [&status_code](Response r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchLambdaTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PatchCallback(
+            [&expected_text](Response r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchLambdaStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto future = cpr::PatchCallback(
+            [&status_code](const Response& r) {
+                status_code = r.status_code;
+                return r.status_code;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchLambdaTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto future = cpr::PatchCallback(
+            [&expected_text](const Response& r) {
+                expected_text = r.text;
+                return r.text;
+            },
+            url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchFunctionStatusTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PatchCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PatchCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchFunctionStatusReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    int status_code = 0;
+    auto callback = std::function<int(Response)>(std::bind(status_callback_ref, std::ref(status_code), std::placeholders::_1));
+    auto future = cpr::PatchCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(status_code, future.get());
+}
+
+TEST(CallbackPatchTests, CallbackPatchFunctionTextReferenceTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::string expected_text{};
+    auto callback = std::function<std::string(Response)>(std::bind(text_callback_ref, std::ref(expected_text), std::placeholders::_1));
+    auto future = cpr::PatchCallback(callback, url, payload);
+    std::this_thread::sleep_for(sleep_time);
+    EXPECT_EQ(future.wait_for(zero), std::future_status::ready);
+    EXPECT_EQ(expected_text, future.get());
+}
+
+TEST(CallbackDataTests, CallbackReadFunctionCancelTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, cpr::ReadCallback([](char* /*buffer*/, size_t& /*size*/, intptr_t /*userdata*/) -> size_t { return false; }));
+    EXPECT_EQ(response.error.code, ErrorCode::REQUEST_CANCELLED);
+}
+
+TEST(CallbackDataTests, CallbackReadFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    unsigned count = 0;
+    Response response = cpr::Post(url, cpr::ReadCallback{3, [&](char* buffer, size_t& size, intptr_t /*userdata*/) -> size_t {
+                                                             std::string data;
+                                                             ++count;
+                                                             switch (count) {
+                                                                 case 1:
+                                                                     data = "x=";
+                                                                     break;
+                                                                 case 2:
+                                                                     data = "5";
+                                                                     break;
+                                                                 default:
+                                                                     return false;
+                                                             }
+                                                             std::copy(data.begin(), data.end(), buffer);
+                                                             size = data.size();
+                                                             return true;
+                                                         }});
+    EXPECT_EQ(2, count);
+    EXPECT_EQ(expected_text, response.text);
+}
+
+TEST(CallbackDataTests, CallbackReadFunctionTextTestPut) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    unsigned count = 0;
+    Response response = cpr::Put(url, cpr::ReadCallback{3, [&](char* buffer, size_t& size, intptr_t /*userdata*/) -> size_t {
+                                                            std::string data;
+                                                            ++count;
+                                                            switch (count) {
+                                                                case 1:
+                                                                    data = "x=";
+                                                                    break;
+                                                                case 2:
+                                                                    data = "5";
+                                                                    break;
+                                                                default:
+                                                                    return false;
+                                                            }
+                                                            std::copy(data.begin(), data.end(), buffer);
+                                                            size = data.size();
+                                                            return true;
+                                                        }});
+    EXPECT_EQ(2, count);
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+/**
+ * Checks if the "Transfer-Encoding" header will be kept when using headers and a read callback.
+ * Issue: https://github.com/whoshuu/cpr/issues/517
+ **/
+TEST(CallbackDataTests, CallbackReadFunctionHeaderTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::string data = "Test";
+    Response response = cpr::Post(url,
+                                  cpr::ReadCallback{-1,
+                                                    [&](char* /*buffer*/, size_t& size, intptr_t /*userdata*/) -> size_t {
+                                                        size = 0;
+                                                        return true;
+                                                    }},
+                                  Header{{"TestHeader", "42"}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+
+    // Check Header:
+    EXPECT_EQ(std::string{"42"}, response.header["TestHeader"]); // Set by us
+    EXPECT_TRUE(response.header.find("TestHeader") != response.header.end());
+    EXPECT_EQ(std::string{"chunked"}, response.header["Transfer-Encoding"]); // Set by the read callback
+    EXPECT_TRUE(response.header.find("Transfer-Encoding") != response.header.end());
+}
+
+/* cesanta mongoose doesn't support chunked requests yet
+TEST(CallbackDataTests, CallbackReadFunctionChunkedTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    unsigned count = 0;
+    Response response = cpr::Post(url, cpr::ReadCallback{[&count](char* buffer, size_t & size) -> size_t {
+        std::string data;
+        ++ count;
+        switch (count) {
+        case 1:
+            data = "x=";
+            break;
+        case 2:
+            data = "5";
+            break;
+        default:
+            data = "";
+            break;
+        }
+        std::copy(data.begin(), data.end(), buffer);
+        size = data.size();
+        return true;
+    }});
+    EXPECT_EQ(3, count);
+    EXPECT_EQ(expected_text, response.text);
+}
+*/
+
+TEST(CallbackDataTests, CallbackHeaderFunctionCancelTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = Post(url, HeaderCallback{[](std::string /*header*/, intptr_t /*userdata*/) -> bool { return false; }});
+    EXPECT_EQ(response.error.code, ErrorCode::REQUEST_CANCELLED);
+}
+
+TEST(CallbackDataTests, CallbackHeaderFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::vector<std::string> expected_headers{"HTTP/1.1 201 Created\r\n", "Content-Type: application/json\r\n", "\r\n"};
+    std::set<std::string> response_headers;
+    Post(url, HeaderCallback{[&response_headers](std::string header, intptr_t /*userdata*/) -> bool {
+             response_headers.insert(header);
+             return true;
+         }});
+    for (std::string& header : expected_headers) {
+        std::cout << header << std::endl;
+        EXPECT_TRUE(response_headers.count(header));
+    }
+}
+
+TEST(CallbackDataTests, CallbackWriteFunctionCancelTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = Post(url, WriteCallback{[](std::string /*header*/, intptr_t /*userdata*/) -> bool { return false; }});
+    EXPECT_EQ(response.error.code, ErrorCode::REQUEST_CANCELLED);
+}
+
+TEST(CallbackDataTests, CallbackWriteFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    std::string response_text;
+    Post(url, Payload{{"x", "5"}}, WriteCallback{[&response_text](std::string header, intptr_t /*userdata*/) -> bool {
+             response_text.append(header);
+             return true;
+         }});
+    EXPECT_EQ(expected_text, response_text);
+}
+
+TEST(CallbackDataTests, CallbackProgressFunctionCancelTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = Post(url, ProgressCallback{[](size_t /*downloadTotal*/, size_t /*downloadNow*/, size_t /*uploadTotal*/, size_t /*uploadNow*/, intptr_t /*userdata*/) -> bool { return false; }});
+    EXPECT_EQ(response.error.code, ErrorCode::REQUEST_CANCELLED);
+}
+
+TEST(CallbackDataTests, CallbackProgressFunctionTotalTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Body body{"x=5"};
+    size_t response_upload = 0, response_download = 0;
+    Response response = Post(url, body, ProgressCallback{[&](size_t downloadTotal, size_t /*downloadNow*/, size_t uploadTotal, size_t /*uploadNow*/, intptr_t /*userdata*/) -> bool {
+                                 response_upload = uploadTotal;
+                                 response_download = downloadTotal;
+                                 return true;
+                             }});
+    EXPECT_EQ(body.str().length(), response_upload);
+    EXPECT_EQ(response.text.length(), response_download);
+}
+
+TEST(CallbackDataTests, CallbackDebugFunctionTextTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Body body{"x=5"};
+    std::string debug_body;
+    Response response = Post(url, body, DebugCallback{[&](DebugCallback::InfoType type, std::string data, intptr_t /*userdata*/) {
+                                 if (type == DebugCallback::InfoType::DATA_OUT) {
+                                     debug_body = data;
+                                 }
+                             }});
+    EXPECT_EQ(body.str(), debug_body);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/data/certificates/client.crt b/Src/external_dependencies/cpr/test/data/certificates/client.crt
new file mode 100644
index 00000000..0583f543
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/certificates/client.crt
@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE-----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==
+-----END CERTIFICATE-----
diff --git a/Src/external_dependencies/cpr/test/data/certificates/root-ca.crt b/Src/external_dependencies/cpr/test/data/certificates/root-ca.crt
new file mode 100644
index 00000000..32d7ba97
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/certificates/root-ca.crt
@@ -0,0 +1,12 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/Src/external_dependencies/cpr/test/data/certificates/server.crt b/Src/external_dependencies/cpr/test/data/certificates/server.crt
new file mode 100644
index 00000000..da572028
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/certificates/server.crt
@@ -0,0 +1,10 @@
+-----BEGIN CERTIFICATE-----
+MIIBdTCCASegAwIBAgIQKMJShx7GKmJqmABrC/KIjzAFBgMrZXAwMTELMAkGA1UE
+BhMCR0IxEDAOBgNVBAoMB0V4YW1wbGUxEDAOBgNVBAMMB1Jvb3QgQ0EwHhcNMjIw
+NjI5MTEzMzA3WhcNMjcwNjI4MTEzMzA3WjAWMRQwEgYDVQQDDAt0ZXN0LXNlcnZl
+cjAqMAUGAytlcAMhAI64JU5RjfdEG1KQMxS5DQWkiGlKIQO7ye4mNFq9QleTo3Aw
+bjAsBgNVHREEJTAjgglsb2NhbGhvc3SHBH8AAAGHEAAAAAAAAAAAAAAAAAAAAAEw
+HQYDVR0OBBYEFDnBgTgB3FU45S9OetBMhHu3J9OvMB8GA1UdIwQYMBaAFOTy84UO
+t4V1hHbjQ9G2nRS44qS3MAUGAytlcANBAC4NoQ31kHfp64R9gGNjTYrr2SNXHyEq
+7YG0qFi5ABvLXJAbM2v27EIgY1TWYO43FBsclQsz6mcp1MzZfjT9RwQ=
+-----END CERTIFICATE-----
diff --git a/Src/external_dependencies/cpr/test/data/client.cnf b/Src/external_dependencies/cpr/test/data/client.cnf
new file mode 100644
index 00000000..d387d39d
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/client.cnf
@@ -0,0 +1,8 @@
+# Based on https://www.feistyduck.com/library/openssl-cookbook/online/openssl-command-line/private-ca-create-subordinate.html
+[req]
+prompt = no
+distinguished_name = dn
+
+[dn]
+CN = test-client
+
diff --git a/Src/external_dependencies/cpr/test/data/generate-certificates.sh b/Src/external_dependencies/cpr/test/data/generate-certificates.sh
new file mode 100644
index 00000000..f20d7729
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/generate-certificates.sh
@@ -0,0 +1,76 @@
+#!/bin/sh
+
+# Generate a CA with a self-signed root certificate that then signs the server certificate
+# Based on the OpenSSL Cookbook by Ivan Ristic:
+# https://www.feistyduck.com/library/openssl-cookbook/online/
+#
+# Especially, see chapter 1.5. Creating a private Certification Authority:
+# https://www.feistyduck.com/library/openssl-cookbook/online/openssl-command-line/private-ca.html
+
+export KEY_PATH=keys
+export CRT_PATH=certificates
+export CA_PATH=ca
+
+# Create environment. 
+# $CA_PATH is deleted in the end. 
+# If new certificates need to be issued, this needs to be done before the cleanup in the end.
+mkdir -p $KEY_PATH $CRT_PATH $CA_PATH/db $CA_PATH/private $CA_PATH/certificates
+touch $CA_PATH/db/index
+openssl rand -hex 16  > $CA_PATH/db/serial
+
+
+# Generate all private keys
+openssl genpkey -algorithm ed25519 -out $KEY_PATH/root-ca.key
+openssl genpkey -algorithm ed25519 -out $KEY_PATH/server.key
+openssl genpkey -algorithm ed25519 -out $KEY_PATH/client.key
+
+# For the server, we also need the public key
+openssl pkey -in $KEY_PATH/server.key -pubout -out $KEY_PATH/server.pub
+
+
+# Generate a Certificate Signing Request for the Root CA based on a config file
+openssl req -new \
+    -config root-ca.cnf -out root-ca.csr \
+    -key $KEY_PATH/root-ca.key
+
+# Self-sign the root certificate
+openssl ca -batch \
+    -selfsign -config root-ca.cnf \
+    -extensions ca_ext \
+    -in root-ca.csr -out $CRT_PATH/root-ca.crt -notext
+
+
+# Create a Certificate Signing request for the server certificate
+openssl req -new \
+    -config server.cnf -out server.csr \
+    -key $KEY_PATH/server.key
+openssl req -text -in server.csr -noout
+
+# Issue the server certificate
+openssl ca -batch \
+    -config root-ca.cnf \
+    -extensions server_ext \
+    -extfile server.cnf -extensions ext \
+    -in server.csr -out $CRT_PATH/server.crt -notext \
+    -days 1825
+
+
+# Create a Certificate Signing request for the client certificate
+openssl req -new \
+    -config client.cnf -out client.csr \
+    -key $KEY_PATH/client.key
+
+# Issue the client certificate
+openssl ca -batch \
+    -config root-ca.cnf \
+    -extensions client_ext \
+    -in client.csr -out $CRT_PATH/client.crt -notext \
+    -days 1825
+
+
+
+# Clean up
+# IMPORTANT: If new certificates should be issued, $CA_PATH and its files MUST NOT be deleted!
+# New certificates can be created in this script before cleaning up.
+rm -rf *.csr $CA_PATH
+
diff --git a/Src/external_dependencies/cpr/test/data/keys/client.key b/Src/external_dependencies/cpr/test/data/keys/client.key
new file mode 100644
index 00000000..120f9e05
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/keys/client.key
@@ -0,0 +1,3 @@
+-----BEGIN PRIVATE KEY-----
+MC4CAQAwBQYDK2VwBCIEIPTCPxm8reXOE2aIrafTcibvg4f6Rg1/F2LVk12EILzJ
+-----END PRIVATE KEY-----
diff --git a/Src/external_dependencies/cpr/test/data/keys/root-ca.key b/Src/external_dependencies/cpr/test/data/keys/root-ca.key
new file mode 100644
index 00000000..a574c0be
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/keys/root-ca.key
@@ -0,0 +1,3 @@
+-----BEGIN PRIVATE KEY-----
+MC4CAQAwBQYDK2VwBCIEIHbCvDGMRz5Ky+7gJvQYZ5t+5sZyHI+UcAKWvS20CoLU
+-----END PRIVATE KEY-----
diff --git a/Src/external_dependencies/cpr/test/data/keys/server.key b/Src/external_dependencies/cpr/test/data/keys/server.key
new file mode 100644
index 00000000..bfdefcb1
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/keys/server.key
@@ -0,0 +1,3 @@
+-----BEGIN PRIVATE KEY-----
+MC4CAQAwBQYDK2VwBCIEIGVXwKYyi/u52mmDVC56TSorC/GGNqgyiW4+jsDno81i
+-----END PRIVATE KEY-----
diff --git a/Src/external_dependencies/cpr/test/data/keys/server.pub b/Src/external_dependencies/cpr/test/data/keys/server.pub
new file mode 100644
index 00000000..715576ad
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/keys/server.pub
@@ -0,0 +1,3 @@
+-----BEGIN PUBLIC KEY-----
+MCowBQYDK2VwAyEAjrglTlGN90QbUpAzFLkNBaSIaUohA7vJ7iY0Wr1CV5M=
+-----END PUBLIC KEY-----
diff --git a/Src/external_dependencies/cpr/test/data/root-ca.cnf b/Src/external_dependencies/cpr/test/data/root-ca.cnf
new file mode 100644
index 00000000..9a1fd65d
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/root-ca.cnf
@@ -0,0 +1,69 @@
+# Based on: https://www.feistyduck.com/library/openssl-cookbook/online/openssl-command-line/private-ca-creating-root.html
+[default]
+name                    = root-ca
+default_ca              = ca_default
+name_opt                = utf8,esc_ctrl,multiline,lname,align
+
+[ca_dn]
+countryName             = "GB"
+organizationName        = "Example"
+commonName              = "Root CA"
+
+[ca_default]
+home                    = ./${ENV::CA_PATH}
+database                = $home/db/index
+serial                  = $home/db/serial
+certificate             = ./${ENV::CRT_PATH}/$name.crt
+private_key             = ./${ENV::KEY_PATH}/$name.key
+RANDFILE                = $home/private/random
+new_certs_dir           = $home/certificates
+unique_subject          = no
+copy_extensions         = none
+default_days            = 3650
+default_md              = sha256
+policy                  = policy_cn_supplied
+
+[policy_cn_supplied]
+countryName             = optional
+stateOrProvinceName     = optional
+organizationName        = optional
+organizationalUnitName  = optional
+commonName              = supplied
+emailAddress            = optional
+
+[req]
+default_bits            = 4096
+encrypt_key             = yes
+default_md              = sha256
+utf8                    = yes
+string_mask             = utf8only
+prompt                  = no
+distinguished_name      = ca_dn
+req_extensions          = ca_ext
+
+[ca_ext]
+basicConstraints        = critical,CA:true
+keyUsage                = critical,keyCertSign
+subjectKeyIdentifier    = hash
+nameConstraints         = @name_constraints
+
+
+[server_ext]
+authorityKeyIdentifier  = keyid:always
+basicConstraints        = critical,CA:false
+extendedKeyUsage        = clientAuth,serverAuth
+keyUsage                = critical,digitalSignature,keyEncipherment
+subjectKeyIdentifier    = hash
+
+[client_ext]
+authorityKeyIdentifier  = keyid:always
+basicConstraints        = critical,CA:false
+extendedKeyUsage        = clientAuth
+keyUsage                = critical,digitalSignature
+subjectKeyIdentifier    = hash
+
+[name_constraints]
+permitted;DNS.0=localhost
+permitted;IP.0=127.0.0.1/255.0.0.0
+permitted;IP.1=::1/ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
+
diff --git a/Src/external_dependencies/cpr/test/data/server.cnf b/Src/external_dependencies/cpr/test/data/server.cnf
new file mode 100644
index 00000000..a67fe34a
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/data/server.cnf
@@ -0,0 +1,12 @@
+# Based on https://www.feistyduck.com/library/openssl-cookbook/online/openssl-command-line/private-ca-create-subordinate.html
+[req]
+prompt = no
+distinguished_name = dn
+req_extensions = ext
+
+[dn]
+CN = test-server
+
+[ext]
+subjectAltName = DNS:localhost,IP:127.0.0.1,IP:::1
+
diff --git a/Src/external_dependencies/cpr/test/delete_tests.cpp b/Src/external_dependencies/cpr/test/delete_tests.cpp
new file mode 100644
index 00000000..50856dfa
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/delete_tests.cpp
@@ -0,0 +1,259 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(DeleteTests, DeleteTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    Response response = cpr::Delete(url);
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, DeleteUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    Response response = cpr::Delete(url);
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, DeleteJsonBodyTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    Response response = cpr::Delete(url, cpr::Body{"'foo': 'bar'"}, cpr::Header{{"Content-Type", "application/json"}});
+    std::string expected_text{"'foo': 'bar'"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    Session session;
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    Session session;
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteJsonBodyTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Content-Type", "application/json"}});
+    session.SetBody(cpr::Body{"{'foo': 'bar'}"});
+    Response response = session.Delete();
+    std::string expected_text{"{'foo': 'bar'}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteUnallowedAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteUnallowedAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, SessionDeleteUnallowedAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    session.SetUrl(url);
+    Response response = session.Delete();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, AsyncDeleteTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    cpr::AsyncResponse future_response = cpr::DeleteAsync(url);
+    cpr::Response response = future_response.get();
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, AsyncDeleteUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    cpr::AsyncResponse future_response = cpr::DeleteAsync(url);
+    cpr::Response response = future_response.get();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DeleteTests, AsyncMultipleDeleteTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::DeleteAsync(url));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{"Delete success"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(DeleteTests, AsyncMultipleDeleteUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/delete_unallowed.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::DeleteAsync(url));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{"Method Not Allowed"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+        EXPECT_EQ(405, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/download_tests.cpp b/Src/external_dependencies/cpr/test/download_tests.cpp
new file mode 100644
index 00000000..e9fa7206
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/download_tests.cpp
@@ -0,0 +1,118 @@
+#include <cstddef>
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "cpr/api.h"
+#include "cpr/callback.h"
+#include "cpr/cprtypes.h"
+#include "cpr/session.h"
+#include "httpServer.hpp"
+
+
+static cpr::HttpServer* server = new cpr::HttpServer();
+
+bool write_data(std::string /*data*/, intptr_t /*userdata*/) {
+    return true;
+}
+
+TEST(DownloadTests, DownloadGzip) {
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetUrl(url);
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+}
+
+TEST(DownloadTests, RangeTestWholeFile) {
+    const int64_t download_size = 9;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetRange(cpr::Range{std::nullopt, std::nullopt});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+TEST(DownloadTests, RangeTestLowerLimit) {
+    const int64_t download_size = 8;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetRange(cpr::Range{1, std::nullopt});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(206, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+TEST(DownloadTests, RangeTestUpperLimit) {
+    const int64_t download_size = 6;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetRange(cpr::Range{std::nullopt, download_size - 1});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(206, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+TEST(DownloadTests, RangeTestLowerAndUpperLimit) {
+    const int64_t download_size = 2;
+    const int64_t start_from = 2;
+    const int64_t finish_at = start_from + download_size - 1;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetRange(cpr::Range{start_from, finish_at});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(206, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+TEST(DownloadTests, RangeTestMultipleRangesSet) {
+    const int64_t num_parts = 2;
+    const int64_t download_size = num_parts * (26 /*content range*/ + 4 /*\n*/) + ((num_parts + 1) * 15 /*boundary*/) + 2 /*--*/ + 6 /*data*/;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetMultiRange(cpr::MultiRange{cpr::Range{std::nullopt, 3}, cpr::Range{5, 6}});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(206, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+TEST(DownloadTests, RangeTestMultipleRangesOption) {
+    const int64_t num_parts = 3;
+    const int64_t download_size = num_parts * (26 /*content range*/ + 4 /*\n*/) + ((num_parts + 1) * 15 /*boundary*/) + 2 /*--*/ + 7 /*data*/;
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetOption(cpr::MultiRange{cpr::Range{std::nullopt, 2}, cpr::Range{4, 5}, cpr::Range{7, 8}});
+    cpr::Response response = session.Download(cpr::WriteCallback{write_data, 0});
+    EXPECT_EQ(206, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+    EXPECT_EQ(download_size, response.downloaded_bytes);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/encoded_auth_tests.cpp b/Src/external_dependencies/cpr/test/encoded_auth_tests.cpp
new file mode 100644
index 00000000..c8b89ce0
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/encoded_auth_tests.cpp
@@ -0,0 +1,20 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+using namespace cpr;
+
+TEST(EncodedAuthenticationTests, UnicodeEncoderTest) {
+    std::string user = "一二三";
+    std::string pass = "Hello World!";
+    EncodedAuthentication pa{user, pass};
+    std::string expected = "%E4%B8%80%E4%BA%8C%E4%B8%89:Hello%20World%21";
+    EXPECT_EQ(pa.GetAuthString(), expected);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/error_tests.cpp b/Src/external_dependencies/cpr/test/error_tests.cpp
new file mode 100644
index 00000000..13831ef5
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/error_tests.cpp
@@ -0,0 +1,97 @@
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <string>
+
+#include <cpr/cpr.h>
+#include <curl/curl.h>
+
+#include "httpServer.hpp"
+#include "httpsServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(ErrorTests, UnsupportedProtocolFailure) {
+    Url url{"urk://wat.is.this"};
+    Response response = cpr::Get(url);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::UNSUPPORTED_PROTOCOL, response.error.code);
+}
+
+TEST(ErrorTests, InvalidURLFailure) {
+    Url url{"???"};
+    Response response = cpr::Get(url);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::INVALID_URL_FORMAT, response.error.code);
+}
+
+TEST(ErrorTests, TimeoutFailure) {
+    Url url{server->GetBaseUrl() + "/timeout.html"};
+    Response response = cpr::Get(url, cpr::Timeout{1});
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(ErrorTests, ChronoTimeoutFailure) {
+    Url url{server->GetBaseUrl() + "/timeout.html"};
+    Response response = cpr::Get(url, cpr::Timeout{std::chrono::milliseconds{1}});
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(ErrorTests, ConnectTimeoutFailure) {
+    Url url{"http://localhost:67"};
+    Response response = cpr::Get(url, cpr::ConnectTimeout{1});
+    EXPECT_EQ(0, response.status_code);
+    // Sometimes a CONNECTION_FAILURE happens before the OPERATION_TIMEDOUT:
+    EXPECT_TRUE(response.error.code == ErrorCode::OPERATION_TIMEDOUT || response.error.code == ErrorCode::CONNECTION_FAILURE);
+}
+
+TEST(ErrorTests, ChronoConnectTimeoutFailure) {
+    Url url{"http://localhost:67"};
+    Response response = cpr::Get(url, cpr::ConnectTimeout{std::chrono::milliseconds{1}});
+    EXPECT_EQ(0, response.status_code);
+    // Sometimes a CONNECTION_FAILURE happens before the OPERATION_TIMEDOUT:
+    EXPECT_TRUE(response.error.code == ErrorCode::OPERATION_TIMEDOUT || response.error.code == ErrorCode::CONNECTION_FAILURE);
+}
+
+TEST(ErrorTests, LowSpeedTimeFailure) {
+    Url url{server->GetBaseUrl() + "/low_speed.html"};
+    Response response = cpr::Get(url, cpr::LowSpeed{1000, 1});
+    // Do not check for the HTTP status code, since libcurl always provides the status code of the header if it was received
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(ErrorTests, LowSpeedBytesFailure) {
+    Url url{server->GetBaseUrl() + "/low_speed_bytes.html"};
+    Response response = cpr::Get(url, cpr::LowSpeed{1000, 1});
+    // Do not check for the HTTP status code, since libcurl always provides the status code of the header if it was received
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(ErrorTests, ProxyFailure) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, cpr::Proxies{{"http", "http://bad_host/"}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::PROXY_RESOLUTION_FAILURE, response.error.code);
+}
+
+TEST(ErrorTests, BoolFalseTest) {
+    Error error;
+    EXPECT_FALSE(error);
+}
+
+TEST(ErrorTests, BoolTrueTest) {
+    Error error;
+    error.code = ErrorCode::UNSUPPORTED_PROTOCOL;
+    EXPECT_TRUE(error);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/get_tests.cpp b/Src/external_dependencies/cpr/test/get_tests.cpp
new file mode 100644
index 00000000..d93bd173
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/get_tests.cpp
@@ -0,0 +1,1305 @@
+#include <gtest/gtest.h>
+
+#include <memory>
+#include <string>
+
+#include "cpr/cpr.h"
+#include "cpr/cprtypes.h"
+#include "cpr/redirect.h"
+#include "cpr/session.h"
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(BasicTests, HelloWorldTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, HelloWorldStringViewUrlTest) {
+    Url url{static_cast<std::string_view>(server->GetBaseUrl() + "/hello.html")};
+    Response response = cpr::Get(url);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, HelloWorldNoInterfaceTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Interface iface{""}; // Do not specify any specific interface
+    Response response = cpr::Get(url, iface);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, HelloWorldNoInterfaceStringViewTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Interface iface{std::string_view{}}; // Do not specify any specific interface
+    Response response = cpr::Get(url, iface);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, TimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, Timeout{0L});
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, BasicJsonTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Response response = cpr::Get(url);
+    std::string expected_text{
+            "[\n"
+            "  {\n"
+            "    \"first_key\": \"first_value\",\n"
+            "    \"second_key\": \"second_value\"\n"
+            "  }\n"
+            "]"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, ResourceNotFoundTest) {
+    Url url{server->GetBaseUrl() + "/error.html"};
+    Response response = cpr::Get(url);
+    std::string expected_text{"Not Found"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(404, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, BadHostTest) {
+    Url url{"http://bad_host/"};
+    Response response = cpr::Get(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::HOST_RESOLUTION_FAILURE, response.error.code);
+}
+
+TEST(CookiesTests, BasicCookiesTest) {
+    Url url{server->GetBaseUrl() + "/basic_cookies.html"};
+    Response response = cpr::Get(url);
+    cpr::Cookies res_cookies{response.cookies};
+    std::string expected_text{"Basic Cookies"};
+    cpr::Cookies expectedCookies{
+            {"SID", "31d4d96e407aad42", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+            {"lang", "en-US", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+    };
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    for (auto cookie = res_cookies.begin(), expectedCookie = expectedCookies.begin(); cookie != res_cookies.end() && expectedCookie != expectedCookies.end(); cookie++, expectedCookie++) {
+        EXPECT_EQ(expectedCookie->GetName(), cookie->GetName());
+        EXPECT_EQ(expectedCookie->GetValue(), cookie->GetValue());
+        EXPECT_EQ(expectedCookie->GetDomain(), cookie->GetDomain());
+        EXPECT_EQ(expectedCookie->IsIncludingSubdomains(), cookie->IsIncludingSubdomains());
+        EXPECT_EQ(expectedCookie->GetPath(), cookie->GetPath());
+        EXPECT_EQ(expectedCookie->IsHttpsOnly(), cookie->IsHttpsOnly());
+        EXPECT_EQ(expectedCookie->GetExpires(), cookie->GetExpires());
+    }
+}
+
+TEST(CookiesTests, EmptyCookieTest) {
+    Url url{server->GetBaseUrl() + "/empty_cookies.html"};
+    Response response = cpr::Get(url);
+    cpr::Cookies res_cookies{response.cookies};
+    std::string expected_text{"Empty Cookies"};
+    cpr::Cookies expectedCookies{
+            {"SID", "", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+            {"lang", "", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+    };
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(expected_text, response.text);
+    for (auto cookie = res_cookies.begin(), expectedCookie = expectedCookies.begin(); cookie != res_cookies.end() && expectedCookie != expectedCookies.end(); cookie++, expectedCookie++) {
+        EXPECT_EQ(expectedCookie->GetName(), cookie->GetName());
+        EXPECT_EQ(expectedCookie->GetValue(), cookie->GetValue());
+        EXPECT_EQ(expectedCookie->GetDomain(), cookie->GetDomain());
+        EXPECT_EQ(expectedCookie->IsIncludingSubdomains(), cookie->IsIncludingSubdomains());
+        EXPECT_EQ(expectedCookie->GetPath(), cookie->GetPath());
+        EXPECT_EQ(expectedCookie->IsHttpsOnly(), cookie->IsHttpsOnly());
+        EXPECT_EQ(expectedCookie->GetExpires(), cookie->GetExpires());
+    }
+}
+
+TEST(CookiesTests, ClientSetCookiesTest) {
+    Url url{server->GetBaseUrl() + "/cookies_reflect.html"};
+    Cookies cookies{
+            {"SID", "31d4d96e407aad42", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+            {"lang", "en-US", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+    };
+    Response response = cpr::Get(url, cookies);
+    std::string expected_text{"SID=31d4d96e407aad42; lang=en-US;"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterTests, SingleParameterTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Parameters parameters{{"key", "value"}};
+    Response response = cpr::Get(url, parameters);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key=value"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterTests, SingleParameterOnlyKeyTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Parameters parameters{{"key", ""}};
+    Response response = cpr::Get(url, parameters);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+}
+
+TEST(ParameterTests, MultipleParametersTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, Parameters{{"key", "value"}, {"hello", "world"}, {"test", "case"}});
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key=value&hello=world&test=case"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterTests, MultipleDynamicParametersTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Parameters parameters{{"key", "value"}};
+    parameters.Add({"hello", "world"});
+    parameters.Add({"test", "case"});
+    Response response = cpr::Get(url, parameters);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key=value&hello=world&test=case"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationTests, BasicAuthenticationSuccessTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationTests, BasicBearerSuccessTest) {
+    Url url{server->GetBaseUrl() + "/bearer_token.html"};
+#if CPR_LIBCURL_VERSION_NUM >= 0x073D00
+    Response response = cpr::Get(url, Bearer{"the_token"});
+#else
+    Response response = cpr::Get(url, Header{{"Authorization", "Bearer the_token"}});
+#endif
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationTests, BasicDigestSuccessTest) {
+    Url url{server->GetBaseUrl() + "/digest_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::DIGEST});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAthenticationParameterTests, BasicAuthenticationSuccessSingleParameterTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterTests, BasicAuthenticationSuccessMultipleParametersTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"key", "value"}, {"hello", "world"}, {"test", "case"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key=value&hello=world&test=case"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterTests, BasicAuthenticationSuccessSingleParameterReverseTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterTests, BasicAuthenticationSuccessMultipleParametersReverseTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"key", "value"}, {"hello", "world"}, {"test", "case"}}, Authentication{"user", "password", AuthMode::BASIC});
+
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?key=value&hello=world&test=case"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationHeaderTests, BasicAuthenticationSuccessSingleHeaderTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationHeaderTests, BasicAuthenticationSuccessMultipleHeadersTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{{"key", "value"}, {"hello", "world"}, {"test", "case"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"value"}, response.header["key"]);
+    EXPECT_EQ(std::string{"case"}, response.header["test"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationHeaderTests, BasicAuthenticationSuccessSingleHeaderReverseTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationHeaderTests, BasicAuthenticationSuccessMultipleHeadersReverseTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"key", "value"}, {"hello", "world"}, {"test", "case"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"value"}, response.header["key"]);
+    EXPECT_EQ(std::string{"case"}, response.header["test"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationTests, BasicAuthenticationNullFailureTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url);
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationTests, BasicAuthenticationFailureTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterTests, BasicAuthenticationFailureSingleParameterTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"hello", "world"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterTests, BasicAuthenticationFailureMultipleParametersTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"key", "value"}, {"hello", "world"}, {"test", "case"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?key=value&hello=world&test=case"}, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderJsonTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Response response = cpr::Get(url, Header{{"content-type", "application/json"}});
+    std::string expected_text{
+            "[\n"
+            "  {\n"
+            "    \"first_key\": \"first_value\",\n"
+            "    \"second_key\": \"second_value\"\n"
+            "  }\n"
+            "]"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectNoneTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url);
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectUpdateHeaderAddSessionTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetHeader(Header{{"Header1", "Value1"}});
+    session.SetUrl(url);
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"Value1"}, response.header["Header1"]);
+    EXPECT_EQ(std::string{}, response.header["Header2"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+
+    session.UpdateHeader(Header{{"Header2", "Value2"}});
+    response = session.Get();
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"Value1"}, response.header["Header1"]);
+    EXPECT_EQ(std::string{"Value2"}, response.header["Header2"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+/**
+ * Test case for #532
+ * https://github.com/whoshuu/cpr/issues/532
+ **/
+TEST(HeaderTests, SessionHeaderReflectTest) {
+    std::unique_ptr<cpr::Session> session(new cpr::Session());
+    session->SetUrl({server->GetBaseUrl() + "/header_reflect.html"});
+    session->SetBody("Some Body to post");
+    session->SetHeader({{"Content-Type", "application/json"}});
+    cpr::Response response = session->Post();
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(std::string{"Header reflect POST"}, response.text);
+    EXPECT_EQ(std::string{"application/json"}, response.header["Content-Type"]);
+}
+
+TEST(HeaderTests, HeaderReflectUpdateHeaderUpdateSessionTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetHeader(Header{{"Header1", "Value1"}});
+    session.SetUrl(url);
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"Value1"}, response.header["Header1"]);
+    EXPECT_EQ(std::string{}, response.header["Header2"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+
+    session.UpdateHeader(Header{{"Header1", "Value2"}});
+    response = session.Get();
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"Value2"}, response.header["Header1"]);
+    EXPECT_EQ(std::string{}, response.header["Header2"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectEmptyTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectSingleTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectMultipleTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}, {"key", "value"}, {"test", "case"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"value"}, response.header["key"]);
+    EXPECT_EQ(std::string{"case"}, response.header["test"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, HeaderReflectCaseInsensitiveTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"HeLlO", "wOrLd"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["HELLO"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hElLo"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeaderTests, SetEmptyHeaderTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"hello", ""}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectNoneParametersTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectEmptyParametersTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{}, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectSingleParametersTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectMultipleParametersTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}, {"key", "value"}, {"test", "case"}}, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"value"}, response.header["key"]);
+    EXPECT_EQ(std::string{"case"}, response.header["test"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectCaseInsensitiveParametersTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Header{{"HeLlO", "wOrLd"}}, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["HELLO"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hElLo"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectEmptyParametersReverseTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}}, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectSingleParametersReverseTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectMultipleParametersReverseTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}}, Header{{"hello", "world"}, {"key", "value"}, {"test", "case"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"value"}, response.header["key"]);
+    EXPECT_EQ(std::string{"case"}, response.header["test"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterHeaderTests, HeaderReflectCaseInsensitiveParametersReverseTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}, {"three", "four"}, {"five", "six"}}, Header{{"HeLlO", "wOrLd"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two&three=four&five=six"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hello"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["HELLO"]);
+    EXPECT_EQ(std::string{"wOrLd"}, response.header["hElLo"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderAATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{}, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderABTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{}, Header{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderACTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"one", "two"}}, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderADTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"one", "two"}}, Header{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderAETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderAFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{}, Header{{"hello", "world"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderAGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"one", "two"}}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderAHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"one", "two"}}, Header{{"hello", "world"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Header{}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBBTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Header{}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBCTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Header{}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBDTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Header{}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Header{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Header{{"hello", "world"}}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Header{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderBHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Header{{"hello", "world"}}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Authentication{"user", "password", AuthMode::BASIC}, Parameters{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCBTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCCTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"one", "two"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCDTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"one", "two"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC}, Parameters{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Authentication{"user", "password", AuthMode::BASIC}, Parameters{{"one", "two"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderCHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Authentication{"user", "bad_password", AuthMode::BASIC}, Parameters{{"one", "two"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{}, Parameters{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDBTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{}, Parameters{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDCTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{}, Parameters{{"one", "two"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDDTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{}, Parameters{{"one", "two"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{{"hello", "world"}}, Parameters{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{{"hello", "world"}}, Parameters{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{{"hello", "world"}}, Parameters{{"one", "two"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderDHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{{"hello", "world"}}, Parameters{{"one", "two"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Parameters{}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEBTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Parameters{}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderECTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Parameters{{"one", "two"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEDTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{}, Parameters{{"one", "two"}}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Parameters{}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Parameters{}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Parameters{{"one", "two"}}, Authentication{"user", "password", AuthMode::BASIC});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderEHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Header{{"hello", "world"}}, Parameters{{"one", "two"}}, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFATest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Authentication{"user", "password", AuthMode::BASIC}, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFBTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFCTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Authentication{"user", "password", AuthMode::BASIC}, Header{});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFDTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFETest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Authentication{"user", "password", AuthMode::BASIC}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFFTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{}, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{{"hello", "world"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFGTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Authentication{"user", "password", AuthMode::BASIC}, Header{{"hello", "world"}});
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicAuthenticationParameterHeaderTests, BasicAuthenticationParameterHeaderFHTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Get(url, Parameters{{"one", "two"}}, Authentication{"user", "bad_password", AuthMode::BASIC}, Header{{"hello", "world"}});
+    EXPECT_EQ("Unauthorized", response.text);
+    EXPECT_EQ(Url{url + "?one=two"}, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(GetRedirectTests, RedirectTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Response response = cpr::Get(url, Redirect(false));
+    std::string expected_text{"Moved Temporarily"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(302, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(GetRedirectTests, ZeroMaxRedirectsSuccessTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, Redirect(0L));
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(GetRedirectTests, ZeroMaxRedirectsFailureTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Response response = cpr::Get(url, Redirect(0L));
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(301, response.status_code);
+    EXPECT_EQ(ErrorCode::TOO_MANY_REDIRECTS, response.error.code);
+}
+
+TEST(GetRedirectTests, BasicAuthenticationRedirectSuccessTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Response response = cpr::Get(url, Authentication{"user", "password", AuthMode::BASIC}, Header{{"RedirectLocation", "basic_auth.html"}}, Redirect(true, true));
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    std::string resultUrl = "http://user:password@127.0.0.1:" + std::to_string(server->GetPort()) + "/basic_auth.html";
+    EXPECT_EQ(response.url, resultUrl);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, RequestBodyTest) {
+    Url url{server->GetBaseUrl() + "/body_get.html"};
+    Body body{"message=abc123"};
+    Response response = cpr::Get(url, body);
+    std::string expected_text{"abc123"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, RequestBodyStringViewTest) {
+    Url url{server->GetBaseUrl() + "/body_get.html"};
+    Body body{static_cast<std::string_view>("message=abc123")};
+    Response response = cpr::Get(url, body);
+    std::string expected_text{"abc123"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(LimitRateTests, HelloWorldTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, LimitRate(1024, 1024));
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/head_tests.cpp b/Src/external_dependencies/cpr/test/head_tests.cpp
new file mode 100644
index 00000000..43c18314
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/head_tests.cpp
@@ -0,0 +1,226 @@
+#include <chrono>
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(HeadTests, BasicHeadTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, ComplexHeadTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, ResourceNotFoundHeadTest) {
+    Url url{server->GetBaseUrl() + "/error.html"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(404, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, BadHostHeadTest) {
+    Url url{"http://bad_host/"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::HOST_RESOLUTION_FAILURE, response.error.code);
+}
+
+TEST(HeadTests, CookieHeadTest) {
+    Url url{server->GetBaseUrl() + "/basic_cookies.html"};
+    Response response = cpr::Head(url);
+    cpr::Cookies expectedCookies{
+            {"SID", "31d4d96e407aad42", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+            {"lang", "en-US", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+    };
+    cpr::Cookies res_cookies{response.cookies};
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    for (auto cookie = res_cookies.begin(), expectedCookie = expectedCookies.begin(); cookie != res_cookies.end() && expectedCookie != expectedCookies.end(); cookie++, expectedCookie++) {
+        EXPECT_EQ(expectedCookie->GetName(), cookie->GetName());
+        EXPECT_EQ(expectedCookie->GetValue(), cookie->GetValue());
+        EXPECT_EQ(expectedCookie->GetDomain(), cookie->GetDomain());
+        EXPECT_EQ(expectedCookie->IsIncludingSubdomains(), cookie->IsIncludingSubdomains());
+        EXPECT_EQ(expectedCookie->GetPath(), cookie->GetPath());
+        EXPECT_EQ(expectedCookie->IsHttpsOnly(), cookie->IsHttpsOnly());
+        EXPECT_EQ(expectedCookie->GetExpires(), cookie->GetExpires());
+    }
+}
+
+TEST(HeadTests, ParameterHeadTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Parameters parameters{{"key", "value"}};
+    Response response = cpr::Head(url, parameters);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(Url{url + "?key=value"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, AuthenticationSuccessHeadTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Head(url, Authentication{"user", "password", AuthMode::BASIC});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, AuthenticationNullFailureHeadTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, AuthenticationFailureHeadTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Response response = cpr::Head(url, Authentication{"user", "bad_password", AuthMode::BASIC});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ("text/plain", response.header["content-type"]);
+    EXPECT_EQ(401, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, BearerSuccessHeadTest) {
+    Url url{server->GetBaseUrl() + "/bearer_token.html"};
+#if CPR_LIBCURL_VERSION_NUM >= 0x073D00
+    Response response = cpr::Get(url, Bearer{"the_token"});
+#else
+    Response response = cpr::Get(url, Header{{"Authorization", "Bearer the_token"}});
+#endif
+    EXPECT_EQ(std::string{"Header reflect GET"}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, DigestSuccessHeadTest) {
+    Url url{server->GetBaseUrl() + "/digest_auth.html"};
+    Response response = cpr::Head(url, Authentication{"user", "password", AuthMode::DIGEST});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, HeaderReflectNoneHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Head(url);
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, HeaderReflectEmptyHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Head(url, Header{});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, HeaderReflectHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Head(url, Header{{"hello", "world"}});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, SetEmptyHeaderHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Head(url, Header{{"hello", ""}});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(std::string{}, response.header["hello"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, RedirectHeadTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Response response = cpr::Head(url, Redirect(false));
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(302, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, ZeroMaxRedirectsHeadTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Head(url, Redirect(0L));
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(HeadTests, BasicHeadAsyncTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::HeadAsync(url));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        EXPECT_EQ(std::string{}, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/httpServer.cpp b/Src/external_dependencies/cpr/test/httpServer.cpp
new file mode 100644
index 00000000..edf3b099
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/httpServer.cpp
@@ -0,0 +1,914 @@
+#include "httpServer.hpp"
+#include <chrono>
+#include <string>
+#include <system_error>
+#include <thread>
+
+namespace cpr {
+
+std::string HttpServer::GetBaseUrl() {
+    return "http://127.0.0.1:" + std::to_string(GetPort());
+}
+
+uint16_t HttpServer::GetPort() {
+    // Unassigned port number in the ephemeral range
+    return 61936;
+}
+
+mg_connection* HttpServer::initServer(mg_mgr* mgr, mg_event_handler_t event_handler) {
+    // Based on: https://mongoose.ws/tutorials/http-server/
+    mg_mgr_init(mgr);
+    std::string port = std::to_string(GetPort());
+    mg_connection* c = mg_http_listen(mgr, GetBaseUrl().c_str(), event_handler, this);
+    if (!c) {
+        throw std::system_error(errno, std::system_category(), "Failed to listen at port " + port);
+    }
+    return c;
+}
+
+void HttpServer::acceptConnection(mg_connection* /* conn */) {}
+
+void HttpServer::OnRequestHello(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
+        OnRequestOptions(conn, msg);
+    } else {
+        std::string response{"Hello world!"};
+        std::string headers = "Content-Type: text/html\r\n";
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    }
+}
+
+void HttpServer::OnRequestRoot(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
+        OnRequestOptions(conn, msg);
+    } else {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestNotFound(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"OPTIONS"}) {
+        OnRequestOptions(conn, msg);
+    } else {
+        std::string errorMessage{"Not Found"};
+        SendError(conn, 404, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestOptions(mg_connection* conn, mg_http_message* /*msg*/) {
+    std::string headers =
+            "Content-Type: text/plain\r\n"
+            "Access-Control-Allow-Origin: *\r\n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "Access-Control-Allow-Methods: GET, POST, PUT, DELETE, PATCH, OPTIONS\r\n"
+            "Access-Control-Max-Age: 3600\r\n";
+
+    std::string response;
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestTimeout(mg_connection* conn, mg_http_message* msg) {
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    OnRequestHello(conn, msg);
+}
+
+void HttpServer::OnRequestLongTimeout(mg_connection* conn, mg_http_message* msg) {
+    std::this_thread::sleep_for(std::chrono::seconds(2));
+    OnRequestHello(conn, msg);
+}
+
+// Send the header, then send "Hello world!" every 100ms
+// For this, we use a mongoose timer
+void HttpServer::OnRequestLowSpeedTimeout(mg_connection* conn, mg_http_message* /* msg */, TimerArg* timer_arg) {
+    std::string response{"Hello world!"};
+    mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length() * 20);
+    timer_arg->connection_id = conn->id;
+    mg_timer_init(
+            &timer_arg->mgr->timers, &timer_arg->timer, 100, MG_TIMER_REPEAT,
+            // The following lambda function gets executed each time the timer is called.
+            // It sends "Hello world!" to the client each 100ms at most 20 times.
+            [](void* arg) {
+                TimerArg* timer_arg = static_cast<TimerArg*>(arg);
+                if (timer_arg->counter < 20 && IsConnectionActive(timer_arg->mgr, timer_arg->connection) && timer_arg->connection->id == timer_arg->connection_id) {
+                    std::string response{"Hello world!"};
+                    mg_send(timer_arg->connection, response.c_str(), response.length());
+                    ++timer_arg->counter;
+                } else {
+                    timer_arg->counter = 20; // Make sure that this timer is never called again
+                }
+            },
+            timer_arg);
+}
+
+// Before and after calling an endpoint that calls this method, the test needs to wait until all previous connections are closed
+// The nested call to mg_mgr_poll can lead to problems otherwise
+void HttpServer::OnRequestLowSpeed(mg_connection* conn, mg_http_message* /*msg*/, mg_mgr* mgr) {
+    std::string response{"Hello world!"};
+    mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length());
+    mg_timer_add(
+            mgr, 2000, MG_TIMER_ONCE,
+            [](void* connection) {
+                std::string response{"Hello world!"};
+                mg_send(static_cast<mg_connection*>(connection), response.c_str(), response.length());
+            },
+            conn);
+}
+
+// Before and after calling an endpoint that calls this method, the test needs to wait until all previous connections are closed
+// The nested call to mg_mgr_poll can lead to problems otherwise
+void HttpServer::OnRequestLowSpeedBytes(mg_connection* conn, mg_http_message* /*msg*/, TimerArg* timer_arg) {
+    std::string response{'a'};
+    mg_printf(conn, "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n", response.length() * 20);
+
+    mg_timer_init(
+            &timer_arg->mgr->timers, &timer_arg->timer, 100, MG_TIMER_REPEAT,
+            // The following lambda function gets executed each time the timer is called.
+            // It first waits for 2 seconds, then sends "a" to the client each 100ms at most 20 times.
+            [](void* arg) {
+                TimerArg* timer_arg = static_cast<TimerArg*>(arg);
+                if (timer_arg->counter == 0) {
+                    std::this_thread::sleep_for(std::chrono::seconds(2));
+                }
+                if (timer_arg->counter < 20 && IsConnectionActive(timer_arg->mgr, timer_arg->connection) && timer_arg->connection->id == timer_arg->connection_id) {
+                    std::string response{'a'};
+                    mg_send(timer_arg->connection, response.c_str(), response.length());
+                    ++timer_arg->counter;
+                } else {
+                    timer_arg->counter = 20; // Make sure that this timer is never called again
+                }
+            },
+            timer_arg);
+}
+
+void HttpServer::OnRequestBasicCookies(mg_connection* conn, mg_http_message* /*msg*/) {
+    time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
+    std::array<char, EXPIRES_STRING_SIZE> expires_string;
+    std::strftime(expires_string.data(), expires_string.size(), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
+
+    std::string cookie1{"SID=31d4d96e407aad42; Expires=" + std::string(expires_string.data()) + "; Secure"};
+    std::string cookie2{"lang=en-US; Expires=" + std::string(expires_string.data()) + "; Secure"};
+    std::string headers =
+            "Content-Type: text/html\r\n"
+            "Set-Cookie: " +
+            cookie1 +
+            "\r\n"
+            "Set-Cookie: " +
+            cookie2 + "\r\n";
+    std::string response{"Basic Cookies"};
+
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestEmptyCookies(mg_connection* conn, mg_http_message* /*msg*/) {
+    time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
+    std::array<char, EXPIRES_STRING_SIZE> expires_string;
+    std::strftime(expires_string.data(), sizeof(expires_string), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
+
+    std::string cookie1{"SID=; Expires=" + std::string(expires_string.data()) + "; Secure"};
+    std::string cookie2{"lang=; Expires=" + std::string(expires_string.data()) + "; Secure"};
+    std::string headers =
+            "Content-Type: text/html\r\n"
+            "Set-Cookie: " +
+            cookie1 +
+            "\r\n"
+            "Set-Cookie: " +
+            cookie2 + "\r\n";
+    std::string response{"Empty Cookies"};
+
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestCookiesReflect(mg_connection* conn, mg_http_message* msg) {
+    mg_str* request_cookies;
+    if ((request_cookies = mg_http_get_header(msg, "Cookie")) == nullptr) {
+        std::string errorMessage{"Cookie not found"};
+        SendError(conn, 400, errorMessage);
+        return;
+    }
+    std::string cookie_str{request_cookies->ptr, request_cookies->len};
+    std::string headers = "Content-Type: text/html\r\n";
+    mg_http_reply(conn, 200, headers.c_str(), cookie_str.c_str());
+}
+
+void HttpServer::OnRequestRedirectionWithChangingCookies(mg_connection* conn, mg_http_message* msg) {
+    time_t expires_time = 3905119080; // Expires=Wed, 30 Sep 2093 03:18:00 GMT
+    std::array<char, EXPIRES_STRING_SIZE> expires_string;
+    std::strftime(expires_string.data(), sizeof(expires_string), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&expires_time));
+
+    mg_str* request_cookies;
+    std::string cookie_str;
+    if ((request_cookies = mg_http_get_header(msg, "Cookie")) != nullptr) {
+        cookie_str = std::string{request_cookies->ptr, request_cookies->len};
+    }
+
+    if (cookie_str.find("SID=31d4d96e407aad42") == std::string::npos) {
+        std::string cookie1{"SID=31d4d96e407aad42; Expires=" + std::string(expires_string.data()) + "; Secure"};
+        std::string cookie2{"lang=en-US; Expires=" + std::string(expires_string.data()) + "; Secure"};
+        std::string headers =
+                "Content-Type: text/html\r\n"
+                "Location: http://127.0.0.1:61936/redirection_with_changing_cookies.html\r\n"
+                "Set-Cookie: " +
+                cookie1 +
+                "\r\n"
+                "Set-Cookie: " +
+                cookie2 + "\r\n";
+
+        mg_http_reply(conn, 302, headers.c_str(), "");
+    } else {
+        cookie_str = "Received cookies are: " + cookie_str;
+        std::string headers = "Content-Type: text/html\r\n";
+        mg_http_reply(conn, 200, headers.c_str(), cookie_str.c_str());
+    }
+}
+
+void HttpServer::OnRequestBasicAuth(mg_connection* conn, mg_http_message* msg) {
+    mg_str* requested_auth;
+    std::string auth{"Basic"};
+    if ((requested_auth = mg_http_get_header(msg, "Authorization")) == nullptr || mg_ncasecmp(requested_auth->ptr, auth.c_str(), auth.length()) != 0) {
+        std::string errorMessage{"Unauthorized"};
+        SendError(conn, 401, errorMessage);
+        return;
+    }
+    std::string auth_string{requested_auth->ptr, requested_auth->len};
+    size_t basic_token = auth_string.find(' ') + 1;
+    auth_string = auth_string.substr(basic_token, auth_string.length() - basic_token);
+    auth_string = Base64Decode(auth_string);
+    size_t colon = auth_string.find(':');
+    std::string username = auth_string.substr(0, colon);
+    std::string password = auth_string.substr(colon + 1, auth_string.length() - colon - 1);
+    if (username == "user" && password == "password") {
+        OnRequestHeaderReflect(conn, msg);
+    } else {
+        std::string errorMessage{"Unauthorized"};
+        SendError(conn, 401, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestBearerAuth(mg_connection* conn, mg_http_message* msg) {
+    mg_str* requested_auth;
+    std::string auth{"Bearer"};
+    if ((requested_auth = mg_http_get_header(msg, "Authorization")) == nullptr || mg_ncasecmp(requested_auth->ptr, auth.c_str(), auth.length()) != 0) {
+        std::string errorMessage{"Unauthorized"};
+        SendError(conn, 401, errorMessage);
+        return;
+    }
+    std::string auth_string{requested_auth->ptr, requested_auth->len};
+    size_t basic_token = auth_string.find(' ') + 1;
+    auth_string = auth_string.substr(basic_token, auth_string.length() - basic_token);
+    if (auth_string == "the_token") {
+        OnRequestHeaderReflect(conn, msg);
+    } else {
+        std::string errorMessage{"Unauthorized"};
+        SendError(conn, 401, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestBasicJson(mg_connection* conn, mg_http_message* /*msg*/) {
+    std::string response =
+            "[\n"
+            "  {\n"
+            "    \"first_key\": \"first_value\",\n"
+            "    \"second_key\": \"second_value\"\n"
+            "  }\n"
+            "]";
+    std::string headers = "Content-Type: application/json\r\n";
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestHeaderReflect(mg_connection* conn, mg_http_message* msg) {
+    std::string response = "Header reflect " + std::string{msg->method.ptr, msg->method.len};
+    std::string headers;
+    bool hasContentTypeHeader = false;
+    for (const mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"Content-Type"} == name) {
+            hasContentTypeHeader = true;
+        }
+
+        if (std::string{"Host"} != name && std::string{"Accept"} != name) {
+            if (header.value.ptr) {
+                headers.append(name + ": " + std::string(header.value.ptr, header.value.len) + "\r\n");
+            }
+        }
+    }
+
+    if (!hasContentTypeHeader) {
+        headers.append("Content-Type: text/html\r\n");
+    }
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestTempRedirect(mg_connection* conn, mg_http_message* msg) {
+    // Get the requested target location:
+    std::string location;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"RedirectLocation"} == name) {
+            location = std::string(header.value.ptr, header.value.len);
+            break;
+        }
+    }
+
+    // Check if the request contains a valid location, else default to 'hello.html':
+    if (location.empty()) {
+        location = "hello.html";
+    }
+    std::string headers = "Location: " + location + "\r\n";
+    std::string response = "Moved Temporarily";
+    mg_http_reply(conn, 302, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestPermRedirect(mg_connection* conn, mg_http_message* msg) {
+    // Get the requested target location:
+    std::string location;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"RedirectLocation"} == name) {
+            location = std::string(header.value.ptr, header.value.len);
+            break;
+        }
+    }
+
+    // Check if the request contains a valid location, else default to 'hello.html':
+    if (location.empty()) {
+        location = "hello.html";
+    }
+    std::string headers = "Location: " + location + "\r\n";
+    std::string response = "Moved Permanently";
+
+    mg_http_reply(conn, 301, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestResolvePermRedirect(mg_connection* conn, mg_http_message* msg) {
+    // Get the requested target location:
+    std::string location;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"RedirectLocation"} == name) {
+            location = std::string(header.value.ptr, header.value.len);
+            break;
+        }
+    }
+
+    if(location.empty()) {
+        std::string errorMessage{"Redirect location missing"};
+        SendError(conn, 405, errorMessage);
+        return;
+    }
+
+    std::string headers = "Location: " + location + "\r\n";
+    std::string response = "Moved Permanently";
+
+    mg_http_reply(conn, 301, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestTwoRedirects(mg_connection* conn, mg_http_message* /*msg*/) {
+    std::string response = "Moved Permanently";
+    std::string headers = "Location: permanent_redirect.html\r\n";
+    mg_http_reply(conn, 301, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestUrlPost(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} != std::string{"POST"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+        return;
+    }
+
+    std::string headers = "Content-Type: application/json\r\n";
+
+    char x[100];
+    char y[100];
+    mg_http_get_var(&(msg->body), "x", x, sizeof(x));
+    mg_http_get_var(&(msg->body), "y", y, sizeof(y));
+    std::string x_string{x};
+    std::string y_string{y};
+    std::string response;
+    if (y_string.empty()) {
+        response = std::string{
+                "{\n"
+                "  \"x\": " +
+                x_string +
+                "\n"
+                "}"};
+    } else {
+        response = std::string{
+                "{\n"
+                "  \"x\": " +
+                x_string +
+                ",\n"
+                "  \"y\": " +
+                y_string +
+                ",\n"
+                "  \"sum\": " +
+                std::to_string(atoi(x) + atoi(y)) +
+                "\n"
+                "}"};
+    }
+    mg_http_reply(conn, 201, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestBodyGet(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} != std::string{"GET"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+        return;
+    }
+    std::array<char, 100> message{};
+    mg_http_get_var(&(msg->body), "message", message.data(), message.size());
+    if (msg->body.len <= 0) {
+        std::string errorMessage{"No Content"};
+        SendError(conn, 405, errorMessage);
+        return;
+    }
+    std::string response = message.data();
+    std::string headers = "Content-Type: text/html\r\n";
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestJsonPost(mg_connection* conn, mg_http_message* msg) {
+    mg_str* content_type{nullptr};
+    if ((content_type = mg_http_get_header(msg, "Content-Type")) == nullptr || std::string{content_type->ptr, content_type->len} != "application/json") {
+        std::string errorMessage{"Unsupported Media Type"};
+        SendError(conn, 415, errorMessage);
+        return;
+    }
+
+    std::string headers = "Content-Type: application/json\r\n";
+    mg_http_reply(conn, 201, headers.c_str(), msg->body.ptr);
+}
+
+void HttpServer::OnRequestFormPost(mg_connection* conn, mg_http_message* msg) {
+    size_t pos{0};
+    mg_http_part part{};
+
+    std::string headers = "Content-Type: application/json\r\n";
+    std::string response{};
+    response += "{\n";
+    while ((pos = mg_http_next_multipart(msg->body, pos, &part)) > 0) {
+        response += "  \"" + std::string(part.name.ptr, part.name.len) + "\": \"";
+        if (!std::string(part.filename.ptr, part.filename.len).empty()) {
+            response += std::string(part.filename.ptr, part.filename.len) + "=";
+        }
+        response += std::string(part.body.ptr, part.body.len) + "\",\n";
+    }
+    response.erase(response.find_last_not_of(",\n") + 1);
+    response += "\n}";
+
+    mg_http_reply(conn, 201, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestDelete(mg_connection* conn, mg_http_message* msg) {
+    bool has_json_header = false;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name = std::string(header.name.ptr, header.name.len);
+        std::string value = std::string(header.value.ptr, header.value.len);
+        if (std::string{"Content-Type"} == name && std::string{"application/json"} == value) {
+            has_json_header = true;
+            break;
+        }
+    }
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"DELETE"}) {
+        std::string headers;
+        std::string response = "Patch success";
+        if (!has_json_header) {
+            headers = "Content-Type: text/html\r\n";
+            response = "Delete success";
+        } else {
+            headers = "Content-Type: application/json\r\n";
+            response = std::string{msg->body.ptr, msg->body.len};
+        }
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    } else {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestDeleteNotAllowed(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"DELETE"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    } else {
+        std::string headers = "Content-Type: text/html\r\n";
+        std::string response = "Delete success";
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    }
+}
+
+void HttpServer::OnRequestPut(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"PUT"}) {
+        char x[100];
+        char y[100];
+        mg_http_get_var(&(msg->body), "x", x, sizeof(x));
+        mg_http_get_var(&(msg->body), "y", y, sizeof(y));
+        std::string x_string = std::string{x};
+        std::string y_string = std::string{y};
+        std::string headers = "Content-Type: application/json\r\n";
+        std::string response;
+        if (y_string.empty()) {
+            response = std::string{
+                    "{\n"
+                    "  \"x\": " +
+                    x_string +
+                    "\n"
+                    "}"};
+        } else {
+            response = std::string{
+                    "{\n"
+                    "  \"x\": " +
+                    x_string +
+                    ",\n"
+                    "  \"y\": " +
+                    y_string +
+                    ",\n"
+                    "  \"sum\": " +
+                    std::to_string(atoi(x) + atoi(y)) +
+                    "\n"
+                    "}"};
+        }
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    } else {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestPostReflect(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} != std::string{"POST"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    }
+
+    std::string response = std::string{msg->body.ptr, msg->body.len};
+    std::string headers;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+
+        std::string name{header.name.ptr, header.name.len};
+        if (std::string{"Host"} != name && std::string{"Accept"} != name) {
+            if (header.value.ptr) {
+                headers.append(name + ": " + std::string(header.value.ptr, header.value.len) + "\r\n");
+            }
+        }
+    }
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestPutNotAllowed(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"PUT"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    } else {
+        std::string headers = "Content-Type: text/html\r\n";
+        std::string response = "Delete success";
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    }
+}
+
+void HttpServer::OnRequestPatch(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"PATCH"}) {
+        char x[100];
+        char y[100];
+        mg_http_get_var(&(msg->body), "x", x, sizeof(x));
+        mg_http_get_var(&(msg->body), "y", y, sizeof(y));
+        std::string x_string = std::string{x};
+        std::string y_string = std::string{y};
+        std::string headers = "Content-Type: application/json\r\n";
+        std::string response;
+        if (y_string.empty()) {
+            response = std::string{
+                    "{\n"
+                    "  \"x\": " +
+                    x_string +
+                    "\n"
+                    "}"};
+        } else {
+            response = std::string{
+                    "{\n"
+                    "  \"x\": " +
+                    x_string +
+                    ",\n"
+                    "  \"y\": " +
+                    y_string +
+                    ",\n"
+                    "  \"sum\": " +
+                    std::to_string(atoi(x) + atoi(y)) +
+                    "\n"
+                    "}"};
+        }
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    } else {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    }
+}
+
+void HttpServer::OnRequestPatchNotAllowed(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"PATCH"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    } else {
+        std::string headers = "Content-Type: text/html\r\n";
+        std::string response = "Delete success";
+        mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+    }
+}
+
+void HttpServer::OnRequestDownloadGzip(mg_connection* conn, mg_http_message* msg) {
+    if (std::string{msg->method.ptr, msg->method.len} == std::string{"DOWNLOAD"}) {
+        std::string errorMessage{"Method Not Allowed"};
+        SendError(conn, 405, errorMessage);
+    } else {
+        std::string encoding;
+        std::string range;
+        std::vector<std::pair<int64_t, int64_t>> ranges;
+
+        for (mg_http_header& header : msg->headers) {
+            if (!header.name.ptr) {
+                continue;
+            }
+
+            std::string name = std::string(header.name.ptr, header.name.len);
+            if (std::string{"Accept-Encoding"} == name) {
+                encoding = std::string(header.value.ptr, header.value.len);
+            } else if (std::string{"Range"} == name) {
+                range = std::string(header.value.ptr, header.value.len);
+            }
+        }
+        if (encoding.find("gzip") == std::string::npos) {
+            std::string errorMessage{"Invalid encoding: " + encoding};
+            SendError(conn, 405, errorMessage);
+            return;
+        }
+        if (!range.empty()) {
+            std::string::size_type eq_pos = range.find('=');
+            if (eq_pos == std::string::npos) {
+                std::string errorMessage{"Invalid range header: " + range};
+                SendError(conn, 405, errorMessage);
+                return;
+            }
+
+            int64_t current_start_index = eq_pos + 1;
+            int64_t current_end_index;
+            std::string::size_type range_len = range.length();
+            std::string::size_type com_pos;
+            std::string::size_type sep_pos;
+            bool more_ranges_exists;
+
+            do {
+                com_pos = range.find(',', current_start_index);
+                if (com_pos < range_len) {
+                    current_end_index = com_pos - 1;
+                } else {
+                    current_end_index = range_len - 1;
+                }
+
+                std::pair<int64_t, int64_t> current_range{0, -1};
+
+                sep_pos = range.find('-', current_start_index);
+                if (sep_pos == std::string::npos) {
+                    std::string errorMessage{"Invalid range format " + range.substr(current_start_index, current_end_index)};
+                    SendError(conn, 405, errorMessage);
+                    return;
+                }
+                if (sep_pos == eq_pos + 1) {
+                    std::string errorMessage{"Suffix ranage not supported: " + range.substr(current_start_index, current_end_index)};
+                    SendError(conn, 405, errorMessage);
+                    return;
+                }
+
+                current_range.first = std::strtoll(range.substr(current_start_index, sep_pos - 1).c_str(), nullptr, 10);
+                if (current_range.first == LLONG_MAX || current_range.first == LLONG_MIN) {
+                    std::string errorMessage{"Start range is invalid number: " + range.substr(current_start_index, current_end_index)};
+                    SendError(conn, 405, errorMessage);
+                    return;
+                }
+
+                std::string er_str = range.substr(sep_pos + 1, current_end_index);
+                if (!er_str.empty()) {
+                    current_range.second = std::strtoll(er_str.c_str(), nullptr, 10);
+                    if (current_range.second == 0 || current_range.second == LLONG_MAX || current_range.second == LLONG_MIN) {
+                        std::string errorMessage{"End range is invalid number: " + range.substr(current_start_index, current_end_index)};
+                        SendError(conn, 405, errorMessage);
+                        return;
+                    }
+                }
+
+                ranges.push_back(current_range);
+
+                if (current_end_index >= static_cast<int64_t>(range.length() - 1)) {
+                    more_ranges_exists = false;
+                } else {
+                    // Multiple ranges are separated by ', '
+                    more_ranges_exists = true;
+                    current_start_index = current_end_index + 3;
+                }
+            } while (more_ranges_exists);
+        }
+
+        std::string response = "Download!";
+        int status_code = 200;
+        std::string headers;
+
+        if (!ranges.empty()) {
+            // Create response parts
+            std::vector<std::string> responses;
+            for (std::pair<int64_t, int64_t> local_range : ranges) {
+                if (local_range.first >= 0) {
+                    if (local_range.first >= (int64_t) response.length()) {
+                        responses.push_back("");
+                    } else if (local_range.second == -1 || local_range.second >= (int64_t) response.length()) {
+                        responses.push_back(response.substr(local_range.first));
+                    } else {
+                        responses.push_back(response.substr(local_range.first, local_range.second - local_range.first + 1));
+                    }
+                }
+            }
+
+            if (responses.size() > 1) {
+                // Create mime multipart response
+                std::string boundary = "3d6b6a416f9b5";
+                status_code = 206;
+                response.clear();
+
+                for (size_t i{0}; i < responses.size(); ++i) {
+                    response += "--" + boundary + "\n";
+                    response += "Content-Range: bytes " + std::to_string(ranges.at(i).first) + "-";
+                    if (ranges.at(i).second > 0) {
+                        response += std::to_string(ranges.at(i).second);
+                    } else {
+                        response += std::to_string(responses.at(i).length());
+                    }
+                    response += "/" + std::to_string(responses.at(i).length()) + "\n\n";
+                    response += responses.at(i) + "\n";
+                }
+                response += "--" + boundary + "--";
+            } else {
+                if (ranges.at(0).second == -1 || ranges.at(0).second >= (int64_t) response.length()) {
+                    status_code = ranges.at(0).first > 0 ? 206 : 200;
+                } else {
+                    status_code = 206;
+                }
+                response = responses.at(0);
+
+                if (status_code == 206) {
+                    headers = "Content-Range: bytes " + std::to_string(ranges.at(0).first) + "-";
+                    if (ranges.at(0).second > 0) {
+                        headers += std::to_string(ranges.at(0).second);
+                    } else {
+                        headers += std::to_string(response.length());
+                    }
+                    headers += "/" + std::to_string(response.length());
+                }
+            }
+        }
+        if (!headers.empty()) {
+            headers += "\r\n";
+        }
+
+        mg_http_reply(conn, status_code, headers.c_str(), response.c_str());
+    }
+}
+
+void HttpServer::OnRequestCheckAcceptEncoding(mg_connection* conn, mg_http_message* msg) {
+    std::string response;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"Accept-Encoding"} == name) {
+            response = std::string(header.value.ptr, header.value.len);
+        }
+    }
+    std::string headers = "Content-Type: text/html\r\n";
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequestCheckExpect100Continue(mg_connection* conn, mg_http_message* msg) {
+    std::string response;
+    for (mg_http_header& header : msg->headers) {
+        if (!header.name.ptr) {
+            continue;
+        }
+        std::string name = std::string(header.name.ptr, header.name.len);
+        if (std::string{"Expect"} == name) {
+            response = std::string(header.value.ptr, header.value.len);
+        }
+    }
+    std::string headers = "Content-Type: text/html\r\n";
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+void HttpServer::OnRequest(mg_connection* conn, mg_http_message* msg) {
+    std::string uri = std::string(msg->uri.ptr, msg->uri.len);
+    if (uri == "/") {
+        OnRequestRoot(conn, msg);
+    } else if (uri == "/hello.html") {
+        OnRequestHello(conn, msg);
+    } else if (uri == "/timeout.html") {
+        OnRequestTimeout(conn, msg);
+    } else if (uri == "/long_timeout.html") {
+        OnRequestLongTimeout(conn, msg);
+    } else if (uri == "/low_speed_timeout.html") {
+        timer_args.emplace_back(std::make_unique<TimerArg>(&mgr, conn, mg_timer{}));
+        OnRequestLowSpeedTimeout(conn, msg, timer_args.back().get());
+    } else if (uri == "/low_speed.html") {
+        OnRequestLowSpeed(conn, msg, &mgr);
+    } else if (uri == "/low_speed_bytes.html") {
+        timer_args.emplace_back(std::make_unique<TimerArg>(&mgr, conn, mg_timer{}));
+        OnRequestLowSpeedBytes(conn, msg, timer_args.back().get());
+    } else if (uri == "/basic_cookies.html") {
+        OnRequestBasicCookies(conn, msg);
+    } else if (uri == "/empty_cookies.html") {
+        OnRequestEmptyCookies(conn, msg);
+    } else if (uri == "/cookies_reflect.html") {
+        OnRequestCookiesReflect(conn, msg);
+    } else if (uri == "/redirection_with_changing_cookies.html") {
+        OnRequestRedirectionWithChangingCookies(conn, msg);
+    } else if (uri == "/basic_auth.html") {
+        OnRequestBasicAuth(conn, msg);
+    } else if (uri == "/bearer_token.html") {
+        OnRequestBearerAuth(conn, msg);
+    } else if (uri == "/digest_auth.html") {
+        OnRequestHeaderReflect(conn, msg);
+    } else if (uri == "/basic.json") {
+        OnRequestBasicJson(conn, msg);
+    } else if (uri == "/header_reflect.html") {
+        OnRequestHeaderReflect(conn, msg);
+    } else if (uri == "/temporary_redirect.html") {
+        OnRequestTempRedirect(conn, msg);
+    } else if (uri == "/permanent_redirect.html") {
+        OnRequestPermRedirect(conn, msg);
+    } else if (uri == "/resolve_permanent_redirect.html") {
+        OnRequestResolvePermRedirect(conn, msg);
+    } else if (uri == "/two_redirects.html") {
+        OnRequestTwoRedirects(conn, msg);
+    } else if (uri == "/url_post.html") {
+        OnRequestUrlPost(conn, msg);
+    } else if (uri == "/body_get.html") {
+        OnRequestBodyGet(conn, msg);
+    } else if (uri == "/json_post.html") {
+        OnRequestJsonPost(conn, msg);
+    } else if (uri == "/form_post.html") {
+        OnRequestFormPost(conn, msg);
+    } else if (uri == "/post_reflect.html") {
+        OnRequestPostReflect(conn, msg);
+    } else if (uri == "/delete.html") {
+        OnRequestDelete(conn, msg);
+    } else if (uri == "/delete_unallowed.html") {
+        OnRequestDeleteNotAllowed(conn, msg);
+    } else if (uri == "/put.html") {
+        OnRequestPut(conn, msg);
+    } else if (uri == "/put_unallowed.html") {
+        OnRequestPutNotAllowed(conn, msg);
+    } else if (uri == "/patch.html") {
+        OnRequestPatch(conn, msg);
+    } else if (uri == "/patch_unallowed.html") {
+        OnRequestPatchNotAllowed(conn, msg);
+    } else if (uri == "/download_gzip.html") {
+        OnRequestDownloadGzip(conn, msg);
+    } else if (uri == "/local_port.html") {
+        OnRequestLocalPort(conn, msg);
+    } else if (uri == "/check_accept_encoding.html") {
+        OnRequestCheckAcceptEncoding(conn, msg);
+    } else if (uri == "/check_expect_100_continue.html") {
+        OnRequestCheckExpect100Continue(conn, msg);
+    } else {
+        OnRequestNotFound(conn, msg);
+    }
+}
+
+void HttpServer::OnRequestLocalPort(mg_connection* conn, mg_http_message* /*msg*/) {
+    // send source port number as response for checking SetLocalPort/SetLocalPortRange
+    std::string headers = "Content-Type: text/plain\r\n";
+    // Convert from big endian to little endian
+    std::string response = std::to_string(AbstractServer::GetRemotePort(conn));
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+} // namespace cpr
diff --git a/Src/external_dependencies/cpr/test/httpServer.hpp b/Src/external_dependencies/cpr/test/httpServer.hpp
new file mode 100644
index 00000000..386dace4
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/httpServer.hpp
@@ -0,0 +1,65 @@
+#ifndef CPR_TEST_HTTP_SERVER_H
+#define CPR_TEST_HTTP_SERVER_H
+
+#include <memory>
+#include <string>
+
+#include "abstractServer.hpp"
+#include "cpr/cpr.h"
+#include "mongoose.h"
+
+namespace cpr {
+class HttpServer : public AbstractServer {
+  public:
+    ~HttpServer() override = default;
+
+    std::string GetBaseUrl() override;
+    uint16_t GetPort() override;
+
+    void OnRequest(mg_connection* conn, mg_http_message* msg) override;
+
+  private:
+    static void OnRequestHello(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestRoot(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestOptions(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestNotFound(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestTimeout(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestLongTimeout(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestLowSpeedTimeout(mg_connection* conn, mg_http_message* msg, TimerArg* arg);
+    static void OnRequestLowSpeed(mg_connection* conn, mg_http_message* msg, mg_mgr* mgr);
+    static void OnRequestLowSpeedBytes(mg_connection* conn, mg_http_message* msg, TimerArg* arg);
+    static void OnRequestBasicCookies(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestEmptyCookies(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestCookiesReflect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestRedirectionWithChangingCookies(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestBasicAuth(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestBearerAuth(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestBasicJson(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestHeaderReflect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestTempRedirect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPermRedirect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestResolvePermRedirect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestTwoRedirects(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestUrlPost(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPostReflect(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestBodyGet(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestJsonPost(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestFormPost(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestDelete(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestDeleteNotAllowed(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPut(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPutNotAllowed(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPatch(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestPatchNotAllowed(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestDownloadGzip(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestLocalPort(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestCheckAcceptEncoding(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestCheckExpect100Continue(mg_connection* conn, mg_http_message* msg);
+
+  protected:
+    mg_connection* initServer(mg_mgr* mgr, mg_event_handler_t event_handler) override;
+    void acceptConnection(mg_connection* conn) override;
+};
+} // namespace cpr
+
+#endif
diff --git a/Src/external_dependencies/cpr/test/httpsServer.cpp b/Src/external_dependencies/cpr/test/httpsServer.cpp
new file mode 100644
index 00000000..401a4703
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/httpsServer.cpp
@@ -0,0 +1,65 @@
+#include "httpsServer.hpp"
+#include <system_error>
+
+namespace cpr {
+HttpsServer::HttpsServer(fs::path&& baseDirPath, fs::path&& sslCertFileName, fs::path&& sslKeyFileName) : baseDirPath(baseDirPath.make_preferred().string()), sslCertFileName(sslCertFileName.make_preferred().string()), sslKeyFileName(sslKeyFileName.make_preferred().string()) {
+    // See https://mongoose.ws/tutorials/tls/
+    memset(static_cast<void*>(&tlsOpts), 0, sizeof(tlsOpts));
+    tlsOpts.cert = this->sslCertFileName.c_str();
+    tlsOpts.certkey = this->sslKeyFileName.c_str();
+}
+
+std::string HttpsServer::GetBaseUrl() {
+    return "https://127.0.0.1:" + std::to_string(GetPort());
+}
+
+uint16_t HttpsServer::GetPort() {
+    // Unassigned port in the ephemeral range
+    return 61937;
+}
+
+mg_connection* HttpsServer::initServer(mg_mgr* mgr, mg_event_handler_t event_handler) {
+    mg_mgr_init(mgr);
+
+    std::string port = std::to_string(GetPort());
+    mg_connection* c = mg_http_listen(mgr, GetBaseUrl().c_str(), event_handler, this);
+    return c;
+}
+
+void HttpsServer::acceptConnection(mg_connection* conn) {
+    // See https://mongoose.ws/tutorials/tls/
+    mg_tls_init(conn, &tlsOpts);
+}
+
+void HttpsServer::OnRequest(mg_connection* conn, mg_http_message* msg) {
+    std::string uri = std::string(msg->uri.ptr, msg->uri.len);
+    if (uri == "/hello.html") {
+        OnRequestHello(conn, msg);
+    } else {
+        OnRequestNotFound(conn, msg);
+    }
+}
+
+void HttpsServer::OnRequestNotFound(mg_connection* conn, mg_http_message* /*msg*/) {
+    mg_http_reply(conn, 404, nullptr, "Not Found");
+}
+
+void HttpsServer::OnRequestHello(mg_connection* conn, mg_http_message* /*msg*/) {
+    std::string response{"Hello world!"};
+    std::string headers{"Content-Type: text/html\r\n"};
+    mg_http_reply(conn, 200, headers.c_str(), response.c_str());
+}
+
+const std::string& HttpsServer::getBaseDirPath() const {
+    return baseDirPath;
+}
+
+const std::string& HttpsServer::getSslCertFileName() const {
+    return sslCertFileName;
+}
+
+const std::string& HttpsServer::getSslKeyFileName() const {
+    return sslKeyFileName;
+}
+
+} // namespace cpr
diff --git a/Src/external_dependencies/cpr/test/httpsServer.hpp b/Src/external_dependencies/cpr/test/httpsServer.hpp
new file mode 100644
index 00000000..cea4d343
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/httpsServer.hpp
@@ -0,0 +1,42 @@
+#ifndef CPR_TEST_HTTPS_SERVER_H
+#define CPR_TEST_HTTPS_SERVER_H
+
+#include <memory>
+#include <string>
+
+#include "abstractServer.hpp"
+#include "cpr/cpr.h"
+#include "mongoose.h"
+#include <cpr/filesystem.h>
+
+namespace cpr {
+class HttpsServer : public AbstractServer {
+  private:
+    // We don't use fs::path here, as this leads to problems using windows
+    const std::string baseDirPath;
+    const std::string sslCertFileName;
+    const std::string sslKeyFileName;
+    struct mg_tls_opts tlsOpts;
+
+  public:
+    explicit HttpsServer(fs::path&& baseDirPath, fs::path&& sslCertFileName, fs::path&& sslKeyFileName);
+    ~HttpsServer() override = default;
+
+    std::string GetBaseUrl() override;
+    uint16_t GetPort() override;
+
+    void OnRequest(mg_connection* conn, mg_http_message* msg) override;
+    static void OnRequestHello(mg_connection* conn, mg_http_message* msg);
+    static void OnRequestNotFound(mg_connection* conn, mg_http_message* msg);
+
+    const std::string& getBaseDirPath() const;
+    const std::string& getSslCertFileName() const;
+    const std::string& getSslKeyFileName() const;
+
+  protected:
+    mg_connection* initServer(mg_mgr* mgr, mg_event_handler_t event_handler) override;
+    void acceptConnection(mg_connection* conn) override;
+};
+} // namespace cpr
+
+#endif
diff --git a/Src/external_dependencies/cpr/test/interceptor_tests.cpp b/Src/external_dependencies/cpr/test/interceptor_tests.cpp
new file mode 100644
index 00000000..2aaf2d62
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/interceptor_tests.cpp
@@ -0,0 +1,369 @@
+#include <gtest/gtest.h>
+#include <iostream>
+
+#include "cpr/cpr.h"
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+class HiddenHelloWorldRedirectInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        // Save original url
+        Url old_url = session.GetFullRequestUrl();
+
+        // Rewrite the url
+        Url url{server->GetBaseUrl() + "/hello.html"};
+        session.SetUrl(url);
+
+        // Procceed the chain
+        Response response = proceed(session);
+
+        // Restore the url again
+        response.url = old_url;
+        return response;
+    }
+};
+
+class ChangeStatusCodeInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        // Procceed the chain
+        Response response = proceed(session);
+
+        // Change the status code
+        response.status_code = 12345;
+        return response;
+    }
+};
+
+class SetBasicAuthInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        // Set authentication
+        session.SetAuth(Authentication{"user", "password", AuthMode::BASIC});
+
+        // Procceed the chain
+        return proceed(session);
+    }
+};
+
+class SetUnsupportedProtocolErrorInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        // Procceed the chain
+        Response response = proceed(session);
+
+        // Set unsupported protocol error
+        response.error = Error{CURLE_UNSUPPORTED_PROTOCOL, "SetErrorInterceptor"};
+
+        // Return response
+        return response;
+    }
+};
+
+class ChangeRequestMethodToGetInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        return proceed(session, Interceptor::ProceedHttpMethod::GET_REQUEST);
+    }
+};
+
+class ChangeRequestMethodToPostInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        session.SetOption(Payload{{"x", "5"}});
+        return proceed(session, Interceptor::ProceedHttpMethod::POST_REQUEST);
+    }
+};
+
+class ChangeRequestMethodToPutInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        session.SetOption(Payload{{"x", "5"}});
+        return proceed(session, Interceptor::ProceedHttpMethod::PUT_REQUEST);
+    }
+};
+
+class ChangeRequestMethodToDeleteInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        return proceed(session, Interceptor::ProceedHttpMethod::DELETE_REQUEST);
+    }
+};
+
+bool write_data(std::string /*data*/, intptr_t /*userdata*/) {
+    return true;
+}
+
+class ChangeRequestMethodToDownloadCallbackInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        return proceed(session, Interceptor::ProceedHttpMethod::DOWNLOAD_CALLBACK_REQUEST, WriteCallback{write_data, 0});
+    }
+};
+
+class ChangeRequestMethodToHeadInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        return proceed(session, Interceptor::ProceedHttpMethod::HEAD_REQUEST);
+    }
+};
+
+class ChangeRequestMethodToOptionsInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        return proceed(session, Interceptor::ProceedHttpMethod::OPTIONS_REQUEST);
+    }
+};
+
+class ChangeRequestMethodToPatchInterceptor : public Interceptor {
+  public:
+    Response intercept(Session& session) override {
+        session.SetOption(Payload{{"x", "5"}});
+        return proceed(session, Interceptor::ProceedHttpMethod::PATCH_REQUEST);
+    }
+};
+
+TEST(InterceptorTest, HiddenUrlRewriteInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<HiddenHelloWorldRedirectInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeStatusCodeInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeStatusCodeInterceptor>());
+    Response response = session.Get();
+
+    long expected_status_code{12345};
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(expected_status_code, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, DownloadChangeStatusCodeInterceptorTest) {
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    cpr::Session session;
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeStatusCodeInterceptor>());
+    Response response = session.Download(cpr::WriteCallback{write_data, 0});
+
+    long expected_status_code{12345};
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(expected_status_code, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, SetBasicAuthInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<SetBasicAuthInterceptor>());
+
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, SetUnsupportedProtocolErrorInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<SetUnsupportedProtocolErrorInterceptor>());
+
+    Response response = session.Get();
+    std::string expected_error_message{"SetErrorInterceptor"};
+    ErrorCode expected_error_code{ErrorCode::UNSUPPORTED_PROTOCOL};
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(expected_error_message, response.error.message);
+    EXPECT_EQ(expected_error_code, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToGetInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToGetInterceptor>());
+    Response response = session.Head();
+
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToPostInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToPostInterceptor>());
+    Response response = session.Head();
+
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToPutInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToPutInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToPatchInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToPatchInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToOptionsInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToOptionsInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToHeadInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToHeadInterceptor>());
+    Response response = session.Get();
+
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToDownloadCallbackInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    session.SetTimeout(Timeout{2000});
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToDownloadCallbackInterceptor>());
+    Response response = session.Put();
+
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ChangeRequestMethodToDeleteInterceptorTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<ChangeRequestMethodToDeleteInterceptor>());
+    Response response = session.Get();
+
+
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, TwoInterceptorsTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<HiddenHelloWorldRedirectInterceptor>());
+    session.AddInterceptor(std::make_shared<ChangeStatusCodeInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{"Hello world!"};
+    long expected_status_code{12345};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(expected_status_code, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(InterceptorTest, ThreeInterceptorsTest) {
+    Url url{server->GetBaseUrl() + "/basic.json"};
+    Session session;
+    session.SetUrl(url);
+    session.AddInterceptor(std::make_shared<HiddenHelloWorldRedirectInterceptor>());
+    session.AddInterceptor(std::make_shared<ChangeStatusCodeInterceptor>());
+    session.AddInterceptor(std::make_shared<SetUnsupportedProtocolErrorInterceptor>());
+    Response response = session.Get();
+
+    std::string expected_text{"Hello world!"};
+    long expected_status_code{12345};
+    std::string expected_error_message{"SetErrorInterceptor"};
+    ErrorCode expected_error_code{ErrorCode::UNSUPPORTED_PROTOCOL};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(expected_status_code, response.status_code);
+    EXPECT_EQ(expected_error_message, response.error.message);
+    EXPECT_EQ(expected_error_code, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
\ No newline at end of file
diff --git a/Src/external_dependencies/cpr/test/multiperform_tests.cpp b/Src/external_dependencies/cpr/test/multiperform_tests.cpp
new file mode 100644
index 00000000..6d6dcdf0
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/multiperform_tests.cpp
@@ -0,0 +1,673 @@
+#include <cstdint>
+#include <gtest/gtest.h>
+
+#include <memory>
+#include <string>
+
+#include <cpr/api.h>
+#include <cpr/cpr.h>
+#include <curl/curl.h>
+
+#include "httpServer.hpp"
+#include "httpsServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+bool write_data(std::string /*data*/, intptr_t /*userdata*/) {
+    return true;
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddSingleSessionTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+
+    EXPECT_EQ(2, session.use_count());
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddMultipleSessionsTest) {
+    MultiPerform multiperform;
+    for (int i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        multiperform.AddSession(session);
+        EXPECT_EQ(2, session.use_count());
+    }
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddMultipleNonDownloadSessionsTest) {
+    MultiPerform multiperform;
+    for (int i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        multiperform.AddSession(session, MultiPerform::HttpMethod::GET_REQUEST);
+        EXPECT_EQ(2, session.use_count());
+    }
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddMultipleDownloadSessionsTest) {
+    MultiPerform multiperform;
+    for (int i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        multiperform.AddSession(session, MultiPerform::HttpMethod::DOWNLOAD_REQUEST);
+        EXPECT_EQ(2, session.use_count());
+    }
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddTwoMixedTypeSessionsTest) {
+    std::shared_ptr<Session> session_1 = std::make_shared<Session>();
+    std::shared_ptr<Session> session_2 = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session_1, MultiPerform::HttpMethod::GET_REQUEST);
+    EXPECT_EQ(2, session_1.use_count());
+    EXPECT_THROW(multiperform.AddSession(session_2, MultiPerform::HttpMethod::DOWNLOAD_REQUEST), std::invalid_argument);
+}
+
+TEST(MultiperformAddSessionTests, MultiperformAddTwoMixedTypeSessionsReversTest) {
+    std::shared_ptr<Session> session_1 = std::make_shared<Session>();
+    std::shared_ptr<Session> session_2 = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session_1, MultiPerform::HttpMethod::DOWNLOAD_REQUEST);
+    EXPECT_EQ(2, session_1.use_count());
+    EXPECT_THROW(multiperform.AddSession(session_2, MultiPerform::HttpMethod::GET_REQUEST), std::invalid_argument);
+}
+
+TEST(MultiperformRemoveSessionTests, MultiperformRemoveSingleSessionTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    EXPECT_EQ(2, session.use_count());
+    multiperform.RemoveSession(session);
+    EXPECT_EQ(1, session.use_count());
+}
+
+TEST(MultiperformRemoveSessionTests, MultiperformRemoveMultipleSessionsTest) {
+    MultiPerform multiperform;
+    for (int i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        multiperform.AddSession(session);
+        EXPECT_EQ(2, session.use_count());
+        multiperform.RemoveSession(session);
+        EXPECT_EQ(1, session.use_count());
+    }
+}
+
+TEST(MultiperformRemoveSessionTests, MultiperformRemoveNonExistingSessionTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    MultiPerform multiperform;
+    EXPECT_THROW(multiperform.RemoveSession(session), std::invalid_argument);
+}
+
+TEST(MultiperformGetTests, MultiperformSingleSessionGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Get();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformGetTests, MultiperformTwoSessionsGetTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/hello.html"});
+    urls.push_back({server->GetBaseUrl() + "/error.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        multiperform.AddSession(sessions.at(i));
+    }
+
+    std::vector<Response> responses = multiperform.Get();
+
+    EXPECT_EQ(responses.size(), sessions.size());
+    std::vector<std::string> expected_texts;
+    expected_texts.emplace_back("Hello world!");
+    expected_texts.emplace_back("Not Found");
+
+    std::vector<std::string> expected_content_types;
+    expected_content_types.emplace_back("text/html");
+    expected_content_types.emplace_back("text/plain");
+
+    std::vector<uint16_t> expected_status_codes;
+    expected_status_codes.push_back(200);
+    expected_status_codes.push_back(404);
+
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(expected_texts.at(i), responses.at(i).text);
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(expected_content_types.at(i), responses.at(i).header["content-type"]);
+        EXPECT_EQ(expected_status_codes.at(i), responses.at(i).status_code);
+        EXPECT_EQ(ErrorCode::OK, responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformGetTests, MultiperformRemoveSessionGetTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/hello.html"});
+    urls.push_back({server->GetBaseUrl() + "/hello.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        multiperform.AddSession(sessions.at(i));
+    }
+
+    multiperform.RemoveSession(sessions.at(0));
+
+    std::vector<Response> responses = multiperform.Get();
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(urls.at(0), responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+#ifndef __APPLE__
+/**
+ * This test case is currently disabled for macOS/Apple systems since it fails in an nondeterministic manner.
+ * It is probably caused by a bug inside curl_multi_perform on macOS.
+ * Needs further investigation.
+ * Issue: https://github.com/libcpr/cpr/issues/841
+ **/
+TEST(MultiperformGetTests, MultiperformTenSessionsGetTest) {
+    const size_t sessionCount = 10;
+
+    MultiPerform multiperform;
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    for (size_t i = 0; i < sessionCount; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        session->SetUrl(url);
+        multiperform.AddSession(session);
+    }
+
+    std::vector<Response> responses = multiperform.Get();
+
+    EXPECT_EQ(responses.size(), sessionCount);
+    for (Response& response : responses) {
+        EXPECT_EQ(std::string{"Hello world!"}, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+#endif
+
+TEST(MultiperformDeleteTests, MultiperformSingleSessionDeleteTest) {
+    Url url{server->GetBaseUrl() + "/delete.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Delete();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformDownloadTests, MultiperformSingleSessionDownloadTest) {
+    Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Download(WriteCallback{write_data, 0});
+
+    EXPECT_EQ(responses.size(), 1);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformDownloadTests, MultiperformSingleSessionDownloadNonMatchingArgumentsNumberTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    EXPECT_THROW(std::vector<Response> responses = multiperform.Download(WriteCallback{write_data, 0}, WriteCallback{write_data, 0}), std::invalid_argument);
+}
+
+TEST(MultiperformDownloadTests, MultiperformTwoSessionsDownloadTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/download_gzip.html"});
+    urls.push_back({server->GetBaseUrl() + "/download_gzip.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        sessions.at(i)->SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+
+        multiperform.AddSession(sessions.at(i));
+    }
+
+    std::vector<Response> responses = multiperform.Download(WriteCallback{write_data, 0}, WriteCallback{write_data, 0});
+
+    EXPECT_EQ(responses.size(), sessions.size());
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(200, responses.at(i).status_code);
+        EXPECT_EQ(ErrorCode::OK, responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformPutTests, MultiperformSingleSessionPutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload(Payload{{"x", "5"}});
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Put();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformHeadTests, MultiperformSingleSessionHeadTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Head();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text;
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformOptionsTests, MultiperformSingleSessionOptionsTest) {
+    Url url{server->GetBaseUrl() + "/"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Options();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text;
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, responses.at(0).header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformPatchTests, MultiperformSingleSessionPatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload(Payload{{"x", "5"}});
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Patch();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformPostTests, MultiperformSingleSessionPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload(Payload{{"x", "5"}});
+    MultiPerform multiperform;
+    multiperform.AddSession(session);
+    std::vector<Response> responses = multiperform.Post();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(201, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformPerformTests, MultiperformSingleGetPerformTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    MultiPerform multiperform;
+    multiperform.AddSession(session, MultiPerform::HttpMethod::GET_REQUEST);
+    std::vector<Response> responses = multiperform.Perform();
+
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformPerformTests, MultiperformTwoGetPerformTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/hello.html"});
+    urls.push_back({server->GetBaseUrl() + "/error.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        multiperform.AddSession(sessions.at(i), MultiPerform::HttpMethod::GET_REQUEST);
+    }
+
+    std::vector<Response> responses = multiperform.Perform();
+
+    EXPECT_EQ(responses.size(), sessions.size());
+    std::vector<std::string> expected_texts;
+    expected_texts.emplace_back("Hello world!");
+    expected_texts.emplace_back("Not Found");
+
+    std::vector<std::string> expected_content_types;
+    expected_content_types.emplace_back("text/html");
+    expected_content_types.emplace_back("text/plain");
+
+    std::vector<uint16_t> expected_status_codes;
+    expected_status_codes.push_back(200);
+    expected_status_codes.push_back(404);
+
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(expected_texts.at(i), responses.at(i).text);
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(expected_content_types.at(i), responses.at(i).header["content-type"]);
+        EXPECT_EQ(expected_status_codes.at(i), responses.at(i).status_code);
+        EXPECT_EQ(ErrorCode::OK, responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformPerformTests, MultiperformMixedMethodsPerformTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/hello.html"});
+    urls.push_back({server->GetBaseUrl() + "/delete.html"});
+    urls.push_back({server->GetBaseUrl() + "/error.html"});
+    urls.push_back({server->GetBaseUrl() + "/url_post.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+    std::vector<MultiPerform::HttpMethod> methods;
+    methods.push_back(MultiPerform::HttpMethod::GET_REQUEST);
+    methods.push_back(MultiPerform::HttpMethod::DELETE_REQUEST);
+    methods.push_back(MultiPerform::HttpMethod::GET_REQUEST);
+    methods.push_back(MultiPerform::HttpMethod::POST_REQUEST);
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        if (methods.at(i) == MultiPerform::HttpMethod::POST_REQUEST) {
+            sessions.at(i)->SetPayload(Payload{{"x", "5"}});
+        }
+        multiperform.AddSession(sessions.at(i), methods.at(i));
+    }
+
+    std::vector<Response> responses = multiperform.Perform();
+
+    EXPECT_EQ(responses.size(), sessions.size());
+
+    std::vector<std::string> expected_texts;
+    expected_texts.emplace_back("Hello world!");
+    expected_texts.emplace_back("Delete success");
+    expected_texts.emplace_back("Not Found");
+    expected_texts.emplace_back(
+            "{\n"
+            "  \"x\": 5\n"
+            "}");
+
+    std::vector<std::string> expected_content_types;
+    expected_content_types.emplace_back("text/html");
+    expected_content_types.emplace_back("text/html");
+    expected_content_types.emplace_back("text/plain");
+    expected_content_types.emplace_back("application/json");
+
+    std::vector<uint16_t> expected_status_codes;
+    expected_status_codes.push_back(200);
+    expected_status_codes.push_back(200);
+    expected_status_codes.push_back(404);
+    expected_status_codes.push_back(201);
+
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(expected_texts.at(i), responses.at(i).text);
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(expected_content_types.at(i), responses.at(i).header["content-type"]);
+        EXPECT_EQ(expected_status_codes.at(i), responses.at(i).status_code);
+        EXPECT_EQ(ErrorCode::OK, responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformPerformDownloadTests, MultiperformSinglePerformDownloadTest) {
+    Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    MultiPerform multiperform;
+    multiperform.AddSession(session, MultiPerform::HttpMethod::DOWNLOAD_REQUEST);
+    std::vector<Response> responses = multiperform.PerformDownload(WriteCallback{write_data, 0});
+
+    EXPECT_EQ(responses.size(), 1);
+    EXPECT_EQ(url, responses.at(0).url);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformDownloadTests, MultiperformSinglePerformDownloadNonMatchingArgumentsNumberTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    MultiPerform multiperform;
+    multiperform.AddSession(session, MultiPerform::HttpMethod::DOWNLOAD_REQUEST);
+    EXPECT_THROW(std::vector<Response> responses = multiperform.PerformDownload(WriteCallback{write_data, 0}, WriteCallback{write_data, 0}), std::invalid_argument);
+}
+
+TEST(MultiperformPerformDownloadTests, MultiperformTwoPerformDownloadTest) {
+    MultiPerform multiperform;
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/download_gzip.html"});
+    urls.push_back({server->GetBaseUrl() + "/download_gzip.html"});
+
+    std::vector<std::shared_ptr<Session>> sessions;
+    sessions.push_back(std::make_shared<Session>());
+    sessions.push_back(std::make_shared<Session>());
+
+
+    for (size_t i = 0; i < sessions.size(); ++i) {
+        sessions.at(i)->SetUrl(urls.at(i));
+        sessions.at(i)->SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+
+        multiperform.AddSession(sessions.at(i), MultiPerform::HttpMethod::DOWNLOAD_REQUEST);
+    }
+
+    std::vector<Response> responses = multiperform.PerformDownload(WriteCallback{write_data, 0}, WriteCallback{write_data, 0});
+
+    EXPECT_EQ(responses.size(), sessions.size());
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(200, responses.at(i).status_code);
+        EXPECT_EQ(ErrorCode::OK, responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformAPITests, MultiperformApiSingleGetTest) {
+    std::vector<Response> responses = MultiGet(std::tuple<Url>{Url{server->GetBaseUrl() + "/hello.html"}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiTwoGetsTest) {
+    std::vector<Response> responses = MultiGet(std::tuple<Url, Timeout>{Url{server->GetBaseUrl() + "/long_timeout.html"}, Timeout{1000}}, std::tuple<Url>{Url{server->GetBaseUrl() + "/error.html"}});
+
+    EXPECT_EQ(responses.size(), 2);
+    std::vector<Url> urls;
+    urls.push_back({server->GetBaseUrl() + "/long_timeout.html"});
+    urls.push_back({server->GetBaseUrl() + "/error.html"});
+
+    std::vector<std::string> expected_texts;
+    expected_texts.emplace_back("");
+    expected_texts.emplace_back("Not Found");
+
+    std::vector<std::string> expected_content_types;
+    expected_content_types.emplace_back("");
+    expected_content_types.emplace_back("text/plain");
+
+    std::vector<uint16_t> expected_status_codes;
+    expected_status_codes.push_back(0);
+    expected_status_codes.push_back(404);
+
+    std::vector<ErrorCode> expected_error_codes;
+    expected_error_codes.push_back(ErrorCode::OPERATION_TIMEDOUT);
+    expected_error_codes.push_back(ErrorCode::OK);
+
+    for (size_t i = 0; i < responses.size(); ++i) {
+        EXPECT_EQ(expected_texts.at(i), responses.at(i).text);
+        EXPECT_EQ(urls.at(i), responses.at(i).url);
+        EXPECT_EQ(expected_content_types.at(i), responses.at(i).header["content-type"]);
+        EXPECT_EQ(expected_status_codes.at(i), responses.at(i).status_code);
+        EXPECT_EQ(expected_error_codes.at(i), responses.at(i).error.code);
+    }
+}
+
+TEST(MultiperformAPITests, MultiperformApiSingleDeleteTest) {
+    std::vector<Response> responses = MultiDelete(std::tuple<Url>{Url{server->GetBaseUrl() + "/delete.html"}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{"Delete success"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/delete.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiSinglePutTest) {
+    std::vector<Response> responses = MultiPut(std::tuple<Url, Payload>{Url{server->GetBaseUrl() + "/put.html"}, Payload{{"x", "5"}}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/put.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiSingleHeadTest) {
+    std::vector<Response> responses = MultiHead(std::tuple<Url>{Url{server->GetBaseUrl() + "/hello.html"}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text;
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"text/html"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiSingleOptionsTest) {
+    std::vector<Response> responses = MultiOptions(std::tuple<Url>{Url{server->GetBaseUrl() + "/"}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text;
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, responses.at(0).header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiSinglePatchTest) {
+    std::vector<Response> responses = MultiPatch(std::tuple<Url, Payload>{Url{server->GetBaseUrl() + "/patch.html"}, Payload{{"x", "5"}}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/patch.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(200, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+TEST(MultiperformAPITests, MultiperformApiSinglePostTest) {
+    std::vector<Response> responses = MultiPost(std::tuple<Url, Payload>{Url{server->GetBaseUrl() + "/url_post.html"}, Payload{{"x", "5"}}});
+    EXPECT_EQ(responses.size(), 1);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, responses.at(0).text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/url_post.html"}, responses.at(0).url);
+    EXPECT_EQ(std::string{"application/json"}, responses.at(0).header["content-type"]);
+    EXPECT_EQ(201, responses.at(0).status_code);
+    EXPECT_EQ(ErrorCode::OK, responses.at(0).error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/options_tests.cpp b/Src/external_dependencies/cpr/test/options_tests.cpp
new file mode 100644
index 00000000..ee3176f7
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/options_tests.cpp
@@ -0,0 +1,73 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(OptionsTests, BaseUrlTest) {
+    Url url{server->GetBaseUrl() + "/"};
+    Response response = cpr::Options(url);
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(OptionsTests, SpecificUrlTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Options(url);
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(OptionsTests, AsyncBaseUrlTest) {
+    Url url{server->GetBaseUrl() + "/"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::OptionsAsync(url));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{""};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(OptionsTests, AsyncSpecificUrlTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::OptionsAsync(url));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{""};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/patch_tests.cpp b/Src/external_dependencies/cpr/test/patch_tests.cpp
new file mode 100644
index 00000000..22d0b4f4
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/patch_tests.cpp
@@ -0,0 +1,276 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(PatchTests, PatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    Response response = cpr::Patch(url, payload);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, PatchUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    Response response = cpr::Patch(url, payload);
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchUnallowedAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchUnallowedAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, SessionPatchUnallowedAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Patch();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, AsyncPatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    cpr::AsyncResponse future_response = cpr::PatchAsync(url, payload);
+    cpr::Response response = future_response.get();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, AsyncPatchUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    cpr::AsyncResponse future_response = cpr::PatchAsync(url, payload);
+    cpr::Response response = future_response.get();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PatchTests, AsyncMultiplePatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::PatchAsync(url, payload));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{
+                "{\n"
+                "  \"x\": 5\n"
+                "}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(PatchTests, AsyncMultiplePatchUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/patch_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::PatchAsync(url, payload));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{"Method Not Allowed"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+        EXPECT_EQ(405, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/post_tests.cpp b/Src/external_dependencies/cpr/test/post_tests.cpp
new file mode 100644
index 00000000..a4d08e5a
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/post_tests.cpp
@@ -0,0 +1,756 @@
+#include <gtest/gtest.h>
+
+#include <array>
+#include <cstdio>
+#include <fstream>
+#include <string>
+
+#include <cpr/cpr.h>
+#include <cpr/multipart.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(UrlEncodedPostTests, UrlPostSingleTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostAddPayloadPair) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "1"}};
+    payload.Add({"y", "2"});
+    Response response = cpr::Post(url, payload);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 1,\n"
+            "  \"y\": 2,\n"
+            "  \"sum\": 3\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostPayloadIteratorTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::vector<Pair> payloadData;
+    payloadData.emplace_back("x", "1");
+    payloadData.emplace_back("y", "2");
+    Response response = cpr::Post(url, Payload(payloadData.begin(), payloadData.end()));
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 1,\n"
+            "  \"y\": 2,\n"
+            "  \"sum\": 3\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostEncodeTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Payload{{"x", "hello world!!~"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": hello world!!~\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostEncodeNoCopyTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "hello world!!~"}};
+    // payload lives through the lifetime of Post, so it doesn't need to be copied
+    Response response = cpr::Post(url, payload);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": hello world!!~\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostManyTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}, {"y", "13"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5,\n"
+            "  \"y\": 13,\n"
+            "  \"sum\": 18\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostBadHostTest) {
+    Url url{"http://bad_host/"};
+    Response response = cpr::Post(url, Payload{{"hello", "world"}});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::HOST_RESOLUTION_FAILURE, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostSingleTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", 5}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileTest) {
+    std::string filename{"test_file"};
+    std::string content{"hello world"};
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << content;
+    test_file.close();
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", File{filename}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            content +
+            "\"\n"
+            "}"};
+    std::remove(filename.c_str());
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostMultipleFilesTestLvalue) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    std::string filename1{"file1"};
+    std::string content1{"apple"};
+    std::ofstream file1;
+    file1.open(filename1);
+    file1 << content1;
+    file1.close();
+    std::string filename2{"file2"};
+    std::string content2{"banana"};
+    std::ofstream file2;
+    file2.open(filename2);
+    file2 << content2;
+    file2.close();
+    File singleFile{"file1"};
+    File singleFileWithOverridedFilename{"file1", "applefile"};
+    Files multipleFiles{"file1", "file2"};
+    Files multipleFilesWithOverridedFilename{
+            File{"file1", "applefile"},
+            File{"file2", "bananafile"},
+    };
+    {
+        Response response = cpr::Post(url, Multipart{{"files", singleFile}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"file1=" +
+                content1 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", singleFileWithOverridedFilename}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"applefile=" +
+                content1 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", multipleFiles}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"file1=" +
+                content1 +
+                "\",\n"
+                "  \"files\": \"file2=" +
+                content2 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", multipleFilesWithOverridedFilename}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"applefile=" +
+                content1 +
+                "\",\n"
+                "  \"files\": \"bananafile=" +
+                content2 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    std::remove(filename1.c_str());
+    std::remove(filename2.c_str());
+}
+
+TEST(UrlEncodedPostTests, FormPostMultipleFilesTestRvalue) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    std::string filename1{"file1"};
+    std::string content1{"apple"};
+    std::ofstream file1;
+    file1.open(filename1);
+    file1 << content1;
+    file1.close();
+    std::string filename2{"file2"};
+    std::string content2{"banana"};
+    std::ofstream file2;
+    file2.open(filename2);
+    file2 << content2;
+    file2.close();
+    {
+        Response response = cpr::Post(url, Multipart{{"files", File{"file1"}}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"file1=" +
+                content1 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", File{"file1", "applefile"}}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"applefile=" +
+                content1 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", Files{"file1", "file2"}}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"file1=" +
+                content1 +
+                "\",\n"
+                "  \"files\": \"file2=" +
+                content2 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = cpr::Post(url, Multipart{{"files", Files{
+                                                                       File{"file1", "applefile"},
+                                                                       File{"file2", "bananafile"},
+                                                               }}});
+        std::string expected_text{
+                "{\n"
+                "  \"files\": \"applefile=" +
+                content1 +
+                "\",\n"
+                "  \"files\": \"bananafile=" +
+                content2 + "\"\n}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    std::remove(filename1.c_str());
+    std::remove(filename2.c_str());
+}
+
+TEST(UrlEncodedPostTests, FormPostFileTestWithOverridedFilename) {
+    std::string filename{"test_file"};
+    std::string overided_filename{"overided_filename"};
+    std::string content{"hello world"};
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << content;
+    test_file.close();
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+
+    Response response = cpr::Post(url, Multipart{{"x", File{filename, overided_filename}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"" +
+            overided_filename + "=" + content +
+            "\"\n"
+            "}"};
+    std::remove(filename.c_str());
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileNoCopyTest) {
+    std::string filename{"./test_file"};
+    std::string content{"hello world"};
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << content;
+    test_file.close();
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Multipart multipart{{"x", File{filename}}};
+    Response response = cpr::Post(url, multipart);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            content +
+            "\"\n"
+            "}"};
+    std::remove(filename.c_str());
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileNoCopyTestWithOverridedFilename) {
+    std::string filename{"test_file"};
+    std::string overrided_filename{"overided_filename"};
+    std::string content{"hello world"};
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << content;
+    test_file.close();
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Multipart multipart{{"x", File{filename, overrided_filename}}};
+    Response response = cpr::Post(url, multipart);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"" +
+            overrided_filename + "=" + content +
+            "\"\n"
+            "}"};
+    std::remove(filename.c_str());
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, TimeoutPostTest) {
+    Url url{server->GetBaseUrl() + "/json_post.html"};
+    std::string body{R"({"RegisterObject": {"DeviceID": "65010000005030000001"}})"};
+    cpr::Response response = cpr::Post(url, cpr::Header{{"Content-Type", "application/json"}}, cpr::Body{body}, cpr::ConnectTimeout{3000}, cpr::Timeout{3000});
+    std::string expected_text{R"({"RegisterObject": {"DeviceID": "65010000005030000001"}})"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferTest) {
+    std::string content{"hello world"};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{content.begin(), content.end(), "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            content +
+            "\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferNoCopyTest) {
+    std::string content{"hello world"};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Multipart multipart{{"x", Buffer{content.begin(), content.end(), "test_file"}}};
+    Response response = cpr::Post(url, multipart);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            content +
+            "\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferPointerTest) {
+    const char* content = "hello world";
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{content, 11 + content, "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            std::string(content) +
+            "\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferArrayTest) {
+    const char content[] = "hello world";
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    // We subtract 1 from std::end() because we don't want to include the terminating null
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{std::begin(content), std::end(content) - 1, "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=" +
+            std::string(content) +
+            "\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferVectorTest) {
+    std::vector<unsigned char> content{'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{content.begin(), content.end(), "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=hello world\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostFileBufferStdArrayTest) {
+    std::array<unsigned char, 11> content{{'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'}};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{content.begin(), content.end(), "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=hello world\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostBufferRvalueTest) {
+    std::vector<unsigned char> content{'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", Buffer{content.begin(), content.end(), "test_file"}}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=hello world\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, ReflectPostBufferLvalueTest) {
+    std::vector<unsigned char> content{'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd'};
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Buffer buff{content.begin(), content.end(), "test_file"};
+    Response response = cpr::Post(url, Multipart{{"x", buff}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"test_file=hello world\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostManyTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", 5}, {"y", 13}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\",\n"
+            "  \"y\": \"13\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostManyNoCopyTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Multipart multipart{{"x", 5}, {"y", 13}};
+    Response response = cpr::Post(url, multipart);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\",\n"
+            "  \"y\": \"13\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostContentTypeTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url, Multipart{{"x", 5, "application/number"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, FormPostContentTypeLValueTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Multipart multipart{{"x", 5, "application/number"}};
+    Response response = cpr::Post(url, multipart);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, UrlPostAsyncSingleTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Payload payload{{"x", "5"}};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::PostAsync(url, payload));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{
+                "{\n"
+                "  \"x\": 5\n"
+                "}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(201, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(UrlEncodedPostTests, UrlReflectTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}});
+    std::string expected_text{"Header reflect POST"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UrlEncodedPostTests, PostWithNoBodyTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Response response = cpr::Post(url);
+    std::string expected_text{"{\n}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+static std::string getTimestamp() {
+    char buf[1000];
+    time_t now = time(0);
+    struct tm* tm = gmtime(&now);
+    strftime(buf, sizeof buf, "%a, %d %b %Y %H:%M:%S GMT", tm);
+    return buf;
+}
+
+TEST(UrlEncodedPostTests, PostReflectTest) {
+    std::string uri = server->GetBaseUrl() + "/post_reflect.html";
+    std::string body = R"({"property1": "value1"})";
+    std::string contentType = "application/json";
+    std::string signature = "x-ms-date: something";
+    std::string logType = "LoggingTest";
+    std::string date = getTimestamp();
+    Response response = cpr::Post(cpr::Url(uri), cpr::Header{{"content-type", contentType}, {"Authorization", signature}, {"log-type", logType}, {"x-ms-date", date}, {"content-length", std::to_string(body.length())}}, cpr::Body(body));
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(body, response.text);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(signature, response.header["Authorization"]);
+    EXPECT_EQ(logType, response.header["log-type"]);
+    EXPECT_EQ(date, response.header["x-ms-date"]);
+    EXPECT_EQ(std::to_string(body.length()), response.header["content-length"]);
+}
+
+TEST(UrlEncodedPostTests, PostReflectPayloadTest) {
+    std::string uri = server->GetBaseUrl() + "/header_reflect.html";
+    cpr::Payload payload = cpr::Payload{{"email", ""}, {"password", ""}, {"devicetoken", ""}};
+    cpr::Response response = cpr::Post(cpr::Url(uri), cpr::Timeout{10000}, payload);
+
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(200, response.status_code);
+}
+
+TEST(UrlEncodedPostTests, InjectMultipleHeadersTest) {
+    std::string uri = server->GetBaseUrl() + "/post_reflect.html";
+    std::string key_1 = "key_1";
+    std::string val_1 = "value_1";
+    std::string key_2 = "key_2";
+    std::string val_2 = "value_2";
+    cpr::Response response = cpr::Post(cpr::Url{uri}, cpr::Header{{key_1, val_1}}, cpr::Header{{key_2, val_2}});
+
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(val_1, response.header[key_1]);
+    EXPECT_EQ(val_2, response.header[key_2]);
+}
+
+TEST(UrlEncodedPostTests, PostBodyWithFile) {
+    std::string filename{"test_file"};
+    std::string expected_text(R"({"property1": "value1"})");
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << expected_text;
+    test_file.close();
+    Url url{server->GetBaseUrl() + "/post_reflect.html"};
+    cpr::Response response = Post(url, cpr::Header({{"Content-Type", "application/octet-stream"}}), cpr::Body(File("test_file")));
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(std::string{"application/octet-stream"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+}
+
+TEST(UrlEncodedPostTests, PostBodyWithBuffer) {
+    Url url{server->GetBaseUrl() + "/post_reflect.html"};
+    std::string expected_text(R"({"property1": "value1"})");
+    cpr::Response response = Post(url, cpr::Header({{"Content-Type", "application/octet-stream"}}), cpr::Body(Buffer{expected_text.begin(), expected_text.end(), "test_file"}));
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/octet-stream"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PostRedirectTests, TempRedirectTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}}, Header{{"RedirectLocation", "url_post.html"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(response.url, server->GetBaseUrl() + "/url_post.html");
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PostRedirectTests, TempRedirectNoneTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}}, Header{{"RedirectLocation", "url_post.html"}}, Redirect(PostRedirectFlags::NONE));
+    EXPECT_EQ(response.url, server->GetBaseUrl() + "/url_post.html");
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PostRedirectTests, PermRedirectTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}}, Header{{"RedirectLocation", "url_post.html"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(response.url, server->GetBaseUrl() + "/url_post.html");
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PostRedirectTests, PermRedirectNoneTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Response response = cpr::Post(url, Payload{{"x", "5"}}, Header{{"RedirectLocation", "url_post.html"}}, Redirect(PostRedirectFlags::NONE));
+    EXPECT_EQ(response.url, server->GetBaseUrl() + "/url_post.html");
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/prepare_tests.cpp b/Src/external_dependencies/cpr/test/prepare_tests.cpp
new file mode 100644
index 00000000..d7332c9b
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/prepare_tests.cpp
@@ -0,0 +1,138 @@
+#include <gtest/gtest.h>
+
+#include <string>
+#include <vector>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(PrepareTests, GetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.PrepareGet();
+    CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+    Response response = session.Complete(curl_result);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PrepareTests, OptionsTests) {
+    Url url{server->GetBaseUrl() + "/"};
+    Session session;
+    session.SetUrl(url);
+    session.PrepareOptions();
+    CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+    Response response = session.Complete(curl_result);
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"GET, POST, PUT, DELETE, PATCH, OPTIONS"}, response.header["Access-Control-Allow-Methods"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PrepareTests, PatchTest) {
+    Url url{server->GetBaseUrl() + "/patch.html"};
+    Payload payload{{"x", "5"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    session.PreparePatch();
+    CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+    Response response = session.Complete(curl_result);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PrepareTests, MultipleDeleteHeadPutGetPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Url urlPost{server->GetBaseUrl() + "/post_reflect.html"};
+    Url urlPut{server->GetBaseUrl() + "/put.html"};
+    Session session;
+    for (size_t i = 0; i < 3; ++i) {
+        {
+            session.SetUrl(url);
+            session.PrepareDelete();
+            CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+            Response response = session.Complete(curl_result);
+            std::string expected_text{"Header reflect DELETE"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(urlPost);
+            std::string expectedBody = "a1b2c3Post";
+            session.SetBody(expectedBody);
+            session.PreparePost();
+            CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+            Response response = session.Complete(curl_result);
+            EXPECT_EQ(expectedBody, response.text);
+            EXPECT_EQ(urlPost, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(url);
+            session.PrepareGet();
+            CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+            Response response = session.Complete(curl_result);
+            std::string expected_text{"Header reflect GET"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(urlPut);
+            session.SetPayload({{"x", "5"}});
+            session.PreparePut();
+            CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+            Response response = session.Complete(curl_result);
+            std::string expected_text{
+                    "{\n"
+                    "  \"x\": 5\n"
+                    "}"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(urlPut, response.url);
+            EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(url);
+            session.PrepareHead();
+            CURLcode curl_result = curl_easy_perform(session.GetCurlHolder()->handle);
+            Response response = session.Complete(curl_result);
+            std::string expected_text{"Header reflect HEAD"};
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+    }
+}
+
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/proxy_auth_tests.cpp b/Src/external_dependencies/cpr/test/proxy_auth_tests.cpp
new file mode 100644
index 00000000..f618ba2f
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/proxy_auth_tests.cpp
@@ -0,0 +1,94 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include "cpr/cpr.h"
+#include "httpServer.hpp"
+
+// TODO: This requires a local proxy server (squid). This should be replaced with a source
+// code implementation.
+
+#define HTTP_PROXY "127.0.0.1:3128"
+#define HTTPS_PROXY "127.0.0.1:3128"
+#define PROXY_USER "u$er"
+#define PROXY_PASS "p@ss"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+// TODO: These should be fixed after a source code implementation of a proxy
+#if defined(false)
+TEST(ProxyAuthTests, SingleProxyTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, Proxies{{"http", HTTP_PROXY}}, ProxyAuthentication{{"http", EncodedAuthentication{PROXY_USER, PROXY_PASS}}});
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyAuthTests, MultipleProxyHttpTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Response response = cpr::Get(url, Proxies{{"https", HTTPS_PROXY}, {"http", HTTP_PROXY}}, ProxyAuthentication{{"http", EncodedAuthentication{PROXY_USER, PROXY_PASS}}, {"https", EncodedAuthentication{PROXY_USER, PROXY_PASS}}});
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyAuthTests, CopyProxyTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Proxies proxies{{"http", HTTP_PROXY}};
+    ProxyAuthentication proxy_auth{{"http", EncodedAuthentication{PROXY_USER, PROXY_PASS}}};
+    Response response = cpr::Get(url, proxies, proxy_auth);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyAuthTests, ProxySessionTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetProxies(Proxies{{"http", HTTP_PROXY}});
+    session.SetProxyAuth(ProxyAuthentication{{"http", EncodedAuthentication{PROXY_USER, PROXY_PASS}}});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyAuthTests, ReferenceProxySessionTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Proxies proxies{{"http", HTTP_PROXY}};
+    ProxyAuthentication proxy_auth{{"http", EncodedAuthentication{PROXY_USER, PROXY_PASS}}};
+    Session session;
+    session.SetUrl(url);
+    session.SetProxies(proxies);
+    session.SetProxyAuth(proxy_auth);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+#endif
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/proxy_tests.cpp b/Src/external_dependencies/cpr/test/proxy_tests.cpp
new file mode 100644
index 00000000..f43c4c23
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/proxy_tests.cpp
@@ -0,0 +1,92 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+// TODO: This uses public servers for proxies and endpoints. This should be replaced with a source
+// code implementation inside server.cpp
+
+#define HTTP_PROXY "51.159.4.98:80"
+#define HTTPS_PROXY "51.104.53.182:8000"
+
+using namespace cpr;
+
+TEST(ProxyTests, SingleProxyTest) {
+    Url url{"http://www.httpbin.org/get"};
+    Response response = cpr::Get(url, Proxies{{"http", HTTP_PROXY}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyTests, MultipleProxyHttpTest) {
+    Url url{"http://www.httpbin.org/get"};
+    Response response = cpr::Get(url, Proxies{{"http", HTTP_PROXY}, {"https", HTTPS_PROXY}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+// TODO: These should be fixed after a source code implementation of an HTTPS proxy
+#if defined(false)
+TEST(ProxyTests, ProxyHttpsTest) {
+    Url url{"https://www.httpbin.org/get"};
+    Response response = cpr::Get(url, Proxies{{"https", HTTPS_PROXY}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyTests, MultipleProxyHttpsTest) {
+    Url url{"https://www.httpbin.org/get"};
+    Response response = cpr::Get(url, Proxies{{"http", HTTP_PROXY}, {"https", HTTPS_PROXY}});
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+#endif
+
+TEST(ProxyTests, CopyProxyTest) {
+    Url url{"http://www.httpbin.org/get"};
+    Proxies proxies{{"http", HTTP_PROXY}};
+    Response response = cpr::Get(url, proxies);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyTests, ProxySessionTest) {
+    Url url{"http://www.httpbin.org/get"};
+    Session session;
+    session.SetUrl(url);
+    session.SetProxies(Proxies{{"http", HTTP_PROXY}});
+    Response response = session.Get();
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ProxyTests, ReferenceProxySessionTest) {
+    Url url{"http://www.httpbin.org/get"};
+    Proxies proxies{{"http", HTTP_PROXY}};
+    Session session;
+    session.SetUrl(url);
+    session.SetProxies(proxies);
+    Response response = session.Get();
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/put_tests.cpp b/Src/external_dependencies/cpr/test/put_tests.cpp
new file mode 100644
index 00000000..34e083ff
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/put_tests.cpp
@@ -0,0 +1,276 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cpr.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(PutTests, PutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    Response response = cpr::Put(url, payload);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, PutUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    Response response = cpr::Put(url, payload);
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutUnallowedAfterGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+    }
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutUnallowedAfterHeadTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/get.html"};
+        session.SetUrl(url);
+        Response response = session.Head();
+    }
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, SessionPutUnallowedAfterPostTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/url_post.html"};
+        Payload payload{{"x", "5"}};
+        session.SetUrl(url);
+        Response response = session.Post();
+    }
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    session.SetUrl(url);
+    session.SetPayload(payload);
+    Response response = session.Put();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, AsyncPutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    cpr::AsyncResponse future_response = cpr::PutAsync(url, payload);
+    cpr::Response response = future_response.get();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, AsyncPutUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    cpr::AsyncResponse future_response = cpr::PutAsync(url, payload);
+    cpr::Response response = future_response.get();
+    std::string expected_text{"Method Not Allowed"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(405, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PutTests, AsyncMultiplePutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    Payload payload{{"x", "5"}};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::PutAsync(url, payload));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{
+                "{\n"
+                "  \"x\": 5\n"
+                "}"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(PutTests, AsyncMultiplePutUnallowedTest) {
+    Url url{server->GetBaseUrl() + "/put_unallowed.html"};
+    Payload payload{{"x", "5"}};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        responses.emplace_back(cpr::PutAsync(url, payload));
+    }
+    for (cpr::AsyncResponse& future_response : responses) {
+        cpr::Response response = future_response.get();
+        std::string expected_text{"Method Not Allowed"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+        EXPECT_EQ(405, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/raw_body_tests.cpp b/Src/external_dependencies/cpr/test/raw_body_tests.cpp
new file mode 100644
index 00000000..2416e4eb
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/raw_body_tests.cpp
@@ -0,0 +1,134 @@
+#include <gtest/gtest.h>
+
+#include <cstdio>
+#include <fstream>
+#include <string>
+
+#include <cpr/cpr.h>
+#include <cpr/multipart.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(BodyPostTests, DefaultUrlEncodedPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Body{"x=5"});
+    std::string expected_text = "{\n  \"x\": 5\n}";
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, TextUrlEncodedPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Body{"x=hello world!!~"});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": hello world!!~\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, TextUrlEncodedNoCopyPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Body body{"x=hello world!!~"};
+    // body lives through the lifetime of Post, so it doesn't need to be copied
+    Response response = cpr::Post(url, body);
+    std::string expected_text{
+            "{\n"
+            "  \"x\": hello world!!~\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, UrlEncodedManyPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Body{"x=5&y=13"});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5,\n"
+            "  \"y\": 13,\n"
+            "  \"sum\": 18\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, CustomHeaderNumberPostTest) {
+    Url url{server->GetBaseUrl() + "/json_post.html"};
+    Response response = cpr::Post(url, Body{"{\"x\":5}"}, Header{{"Content-Type", "application/json"}});
+    std::string expected_text{"{\"x\":5}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, CustomHeaderTextPostTest) {
+    Url url{server->GetBaseUrl() + "/json_post.html"};
+    Response response = cpr::Post(url, Body{"{\"x\":\"hello world!!~\"}"}, Header{{"Content-Type", "application/json"}});
+    std::string expected_text{"{\"x\":\"hello world!!~\"}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, CustomWrongHeaderPostTest) {
+    Url url{server->GetBaseUrl() + "/json_post.html"};
+    Response response = cpr::Post(url, Body{"{\"x\":5}"}, Header{{"Content-Type", "text/plain"}});
+    std::string expected_text{"Unsupported Media Type"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+    EXPECT_EQ(415, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyPostTests, UrlPostBadHostTest) {
+    Url url{"http://bad_host/"};
+    Response response = cpr::Post(url, Body{"hello=world"});
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(0, response.status_code);
+    EXPECT_EQ(ErrorCode::HOST_RESOLUTION_FAILURE, response.error.code);
+}
+
+TEST(BodyPostTests, StringMoveBodyTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Response response = cpr::Post(url, Body{std::string{"x=5"}});
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/resolve_tests.cpp b/Src/external_dependencies/cpr/test/resolve_tests.cpp
new file mode 100644
index 00000000..bf675414
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/resolve_tests.cpp
@@ -0,0 +1,44 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include "cpr/cpr.h"
+#include "httpServer.hpp"
+
+using namespace cpr;
+
+static HttpServer* server = new HttpServer();
+
+TEST(ResolveTests, HelloWorldTest) {
+    Url url{"http://www.example.com:" + std::to_string(server->GetPort()) + "/hello.html"};
+    Resolve resolve{"www.example.com", "127.0.0.1", {server->GetPort()}};
+    Response response = cpr::Get(url, resolve);
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ResolveTests, RedirectMultiple) {
+    Url url1{"http://www.example0.com:" + std::to_string(server->GetPort()) + "/resolve_permanent_redirect.html"};
+    Url url2{"http://www.example1.com:" + std::to_string(server->GetPort()) + "/hello.html"};
+    Resolve resolve1{"www.example0.com", "127.0.0.1", {server->GetPort()}};
+    Resolve resolve2{"www.example1.com", "127.0.0.1", {server->GetPort()}};
+
+    Response response = cpr::Get(url1, std::vector<Resolve>{resolve1, resolve2}, Header{{"RedirectLocation", url2.str()}});
+    
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url2, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/session_tests.cpp b/Src/external_dependencies/cpr/test/session_tests.cpp
new file mode 100644
index 00000000..81c86130
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/session_tests.cpp
@@ -0,0 +1,1462 @@
+#include <cstdint>
+#include <cstdlib>
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <string>
+
+#include <cpr/cpr.h>
+#include <curl/curl.h>
+
+#include "httpServer.hpp"
+
+using namespace cpr;
+using namespace std::chrono_literals;
+
+static HttpServer* server = new HttpServer();
+std::chrono::milliseconds sleep_time{50};
+std::chrono::seconds zero{0};
+
+bool write_data(std::string /*data*/, intptr_t /*userdata*/) {
+    return true;
+}
+
+TEST(RedirectTests, TemporaryDefaultRedirectTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(RedirectTests, NoTemporaryRedirectTest) {
+    Url url{server->GetBaseUrl() + "/temporary_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(false));
+    Response response = session.Get();
+    std::string expected_text{"Moved Temporarily"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(302, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(RedirectTests, PermanentDefaultRedirectTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(RedirectTests, NoPermanentRedirectTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(false));
+    Response response = session.Get();
+    std::string expected_text{"Moved Permanently"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(301, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MaxRedirectsTests, ZeroMaxRedirectsSuccessTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(0L));
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MaxRedirectsTests, ZeroMaxRedirectsFailureTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(0L));
+    Response response = session.Get();
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(301, response.status_code);
+    EXPECT_EQ(ErrorCode::TOO_MANY_REDIRECTS, response.error.code);
+}
+
+TEST(MaxRedirectsTests, OneMaxRedirectsSuccessTest) {
+    Url url{server->GetBaseUrl() + "/permanent_redirect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(1L));
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MaxRedirectsTests, OneMaxRedirectsFailureTest) {
+    Url url{server->GetBaseUrl() + "/two_redirects.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(1L));
+    Response response = session.Get();
+    EXPECT_EQ(std::string{}, response.text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/permanent_redirect.html"}, response.url);
+    EXPECT_EQ(std::string{}, response.header["content-type"]);
+    EXPECT_EQ(301, response.status_code);
+    EXPECT_EQ(ErrorCode::TOO_MANY_REDIRECTS, response.error.code);
+}
+
+TEST(MaxRedirectsTests, TwoMaxRedirectsSuccessTest) {
+    Url url{server->GetBaseUrl() + "/two_redirects.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetRedirect(Redirect(2L));
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{server->GetBaseUrl() + "/hello.html"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MultipleGetTests, BasicMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    for (size_t i = 0; i < 100; ++i) {
+        Response response = session.Get();
+        std::string expected_text{"Hello world!"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, UrlChangeMultipleGetTest) {
+    Session session;
+    {
+        Url url{server->GetBaseUrl() + "/hello.html"};
+        session.SetUrl(url);
+        Response response = session.Get();
+        std::string expected_text{"Hello world!"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Url url{server->GetBaseUrl() + "/basic.json"};
+        session.SetUrl(url);
+        Response response = session.Get();
+        std::string expected_text{
+                "[\n"
+                "  {\n"
+                "    \"first_key\": \"first_value\",\n"
+                "    \"second_key\": \"second_value\"\n"
+                "  }\n"
+                "]"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, HeaderMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetHeader(Header{{"hello", "world"}});
+    for (size_t i = 0; i < 100; ++i) {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, HeaderChangeMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetHeader(Header{{"hello", "world"}});
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(std::string{"world"}, response.header["hello"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    session.SetHeader(Header{{"key", "value"}});
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(std::string{"value"}, response.header["key"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, ParameterMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetParameters({{"hello", "world"}});
+    for (size_t i = 0; i < 100; ++i) {
+        Response response = session.Get();
+        std::string expected_text{"Hello world!"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, ParameterChangeMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetParameters({{"hello", "world"}});
+    {
+        Response response = session.Get();
+        std::string expected_text{"Hello world!"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    session.SetUrl(url);
+    session.SetParameters({{"key", "value"}});
+    {
+        Response response = session.Get();
+        std::string expected_text{"Hello world!"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(Url{url + "?key=value"}, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, BasicAuthenticationMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetAuth(Authentication{"user", "password", AuthMode::BASIC});
+    for (size_t i = 0; i < 100; ++i) {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(MultipleGetTests, BasicAuthenticationChangeMultipleGetTest) {
+    Url url{server->GetBaseUrl() + "/basic_auth.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetAuth(Authentication{"user", "password", AuthMode::BASIC});
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    session.SetAuth(Authentication{"user", "bad_password", AuthMode::BASIC});
+    {
+        Response response = session.Get();
+        EXPECT_EQ(std::string{"Unauthorized"}, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+        EXPECT_EQ(401, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    session.SetAuth(Authentication{"bad_user", "password", AuthMode::BASIC});
+    {
+        Response response = session.Get();
+        EXPECT_EQ(std::string{"Unauthorized"}, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/plain"}, response.header["content-type"]);
+        EXPECT_EQ(401, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(ParameterTests, ParameterSingleTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    Parameters parameters{{"hello", "world"}};
+    session.SetParameters(parameters);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?hello=world"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ParameterTests, ParameterMultipleTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    Parameters parameters{{"hello", "world"}, {"key", "value"}};
+    session.SetParameters(parameters);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(Url{url + "?hello=world&key=value"}, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(FullRequestUrlTest, GetFullRequestUrlNoParametersTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    std::string expected_text{server->GetBaseUrl() + "/hello.html"};
+    EXPECT_EQ(expected_text, session.GetFullRequestUrl());
+}
+
+TEST(FullRequestUrlTest, GetFullRequestUrlOneParameterTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    Parameters parameters{{"hello", "world"}};
+    session.SetParameters(parameters);
+    std::string expected_text{server->GetBaseUrl() + "/hello.html" + "?hello=world"};
+    EXPECT_EQ(expected_text, session.GetFullRequestUrl());
+}
+
+TEST(FullRequestUrlTest, GetFullRequestUrlMultipleParametersTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    Parameters parameters{{"hello", "world"}, {"key", "value"}};
+    session.SetParameters(parameters);
+    std::string expected_text{server->GetBaseUrl() + "/hello.html" + "?hello=world&key=value"};
+    EXPECT_EQ(expected_text, session.GetFullRequestUrl());
+}
+
+TEST(TimeoutTests, SetTimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(0L);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(TimeoutTests, SetTimeoutLongTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(10000L);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(TimeoutTests, SetTimeoutLowSpeed) {
+    Url url{server->GetBaseUrl() + "/low_speed_timeout.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(1000);
+    Response response = session.Get();
+    EXPECT_EQ(url, response.url);
+    // Do not check for the HTTP status code, since libcurl always provides the status code of the header if it was received
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(TimeoutTests, SetChronoTimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(std::chrono::milliseconds{0});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(TimeoutTests, SetChronoTimeoutLongTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(std::chrono::milliseconds{10000});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    // Do not check for the HTTP status code, since libcurl always provides the status code of the header if it was received
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(TimeoutTests, SetChronoLiteralTimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(2s);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(TimeoutTests, SetChronoLiteralTimeoutLowSpeed) {
+    Url url{server->GetBaseUrl() + "/low_speed_timeout.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetTimeout(1000ms);
+    Response response = session.Get();
+    EXPECT_EQ(url, response.url);
+    // Do not check for the HTTP status code, since libcurl always provides the status code of the header if it was received
+    EXPECT_EQ(ErrorCode::OPERATION_TIMEDOUT, response.error.code);
+}
+
+TEST(ConnectTimeoutTests, SetConnectTimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetConnectTimeout(0L);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ConnectTimeoutTests, SetConnectTimeoutLongTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetConnectTimeout(10000L);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ConnectTimeoutTests, SetChronoConnectTimeoutTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetConnectTimeout(std::chrono::milliseconds{0});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(ConnectTimeoutTests, SetChronoConnectTimeoutLongTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetConnectTimeout(std::chrono::milliseconds{10000});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(LowSpeedTests, SetLowSpeedTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetLowSpeed({1, 1});
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PayloadTests, SetPayloadTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetPayload({{"x", "5"}});
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(PayloadTests, SetPayloadLValueTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Session session;
+    session.SetUrl(url);
+    Payload payload{{"x", "5"}};
+    session.SetPayload(payload);
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MultipartTests, SetMultipartTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetMultipart({{"x", "5"}});
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(MultipartTests, SetMultipartValueTest) {
+    Url url{server->GetBaseUrl() + "/form_post.html"};
+    Session session;
+    session.SetUrl(url);
+    Multipart multipart{{"x", "5"}};
+    session.SetMultipart(multipart);
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": \"5\"\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyTests, SetBodyTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetBody(Body{"x=5"});
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BodyTests, SetBodyValueTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    Session session;
+    session.SetUrl(url);
+    Body body{"x=5"};
+    session.SetBody(body);
+    Response response = session.Post();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(DigestTests, SetDigestTest) {
+    Url url{server->GetBaseUrl() + "/digest_auth.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetAuth({"user", "password", AuthMode::DIGEST});
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UserAgentTests, SetUserAgentTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    UserAgent userAgent{"Test User Agent"};
+    Session session;
+    session.SetUrl(url);
+    session.SetUserAgent(userAgent);
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(userAgent, response.header["User-Agent"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(UserAgentTests, SetUserAgentStringViewTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    UserAgent userAgent{std::string_view{"Test User Agent"}};
+    Session session;
+    session.SetUrl(url);
+    session.SetUserAgent(userAgent);
+    Response response = session.Get();
+    std::string expected_text{"Header reflect GET"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(userAgent, response.header["User-Agent"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CookiesTests, BasicCookiesTest) {
+    Url url{server->GetBaseUrl() + "/basic_cookies.html"};
+    Session session{};
+    session.SetUrl(url);
+    Response response = session.Get();
+    Cookies res_cookies{response.cookies};
+    std::string expected_text{"Basic Cookies"};
+    cpr::Cookies expectedCookies{
+            {"SID", "31d4d96e407aad42", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+            {"lang", "en-US", "127.0.0.1", false, "/", true, std::chrono::system_clock::from_time_t(3905119080)},
+    };
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    EXPECT_EQ(expected_text, response.text);
+    for (auto cookie = res_cookies.begin(), expectedCookie = expectedCookies.begin(); cookie != res_cookies.end() && expectedCookie != expectedCookies.end(); cookie++, expectedCookie++) {
+        EXPECT_EQ(expectedCookie->GetName(), cookie->GetName());
+        EXPECT_EQ(expectedCookie->GetValue(), cookie->GetValue());
+        EXPECT_EQ(expectedCookie->GetDomain(), cookie->GetDomain());
+        EXPECT_EQ(expectedCookie->IsIncludingSubdomains(), cookie->IsIncludingSubdomains());
+        EXPECT_EQ(expectedCookie->GetPath(), cookie->GetPath());
+        EXPECT_EQ(expectedCookie->IsHttpsOnly(), cookie->IsHttpsOnly());
+        EXPECT_EQ(expectedCookie->GetExpires(), cookie->GetExpires());
+    }
+}
+
+TEST(CookiesTests, ClientSetCookiesTest) {
+    Url url{server->GetBaseUrl() + "/cookies_reflect.html"};
+    {
+        Session session{};
+        session.SetUrl(url);
+        session.SetCookies(Cookies{
+                {"SID", "31d4d96e407aad42"},
+                {"lang", "en-US"},
+        });
+        Response response = session.Get();
+        std::string expected_text{"SID=31d4d96e407aad42; lang=en-US;"};
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+        EXPECT_EQ(expected_text, response.text);
+    }
+    {
+        Session session{};
+        session.SetUrl(url);
+        Cookies cookie{
+                {"SID", "31d4d96e407aad42"},
+                {"lang", "en-US"},
+        };
+        session.SetCookies(cookie);
+        Response response = session.Get();
+        std::string expected_text{"SID=31d4d96e407aad42; lang=en-US;"};
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+        EXPECT_EQ(expected_text, response.text);
+    }
+}
+
+TEST(CookiesTests, RedirectionWithChangingCookiesTest) {
+    Url url{server->GetBaseUrl() + "/redirection_with_changing_cookies.html"};
+    {
+        Session session{};
+        session.SetUrl(url);
+        session.SetCookies(Cookies{
+                {"SID", "31d4d96e407aad42"},
+                {"lang", "en-US"},
+        });
+        session.SetRedirect(Redirect(0L));
+        Response response = session.Get();
+        std::string expected_text{"Received cookies are: SID=31d4d96e407aad42; lang=en-US;"};
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+        EXPECT_EQ(expected_text, response.text);
+    }
+    {
+        Session session{};
+        session.SetUrl(url);
+        session.SetRedirect(Redirect(1L));
+        Response response = session.Get();
+        std::string expected_text{"Received cookies are: lang=en-US; SID=31d4d96e407aad42"};
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+        EXPECT_EQ(expected_text, response.text);
+    }
+    {
+        Session session{};
+        session.SetUrl(url);
+        session.SetCookies(Cookies{
+                {"SID", "empty_sid"},
+        });
+        session.SetRedirect(Redirect(1L));
+        Response response = session.Get();
+        std::string expected_text{"Received cookies are: lang=en-US; SID=31d4d96e407aad42; SID=empty_sid;"};
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+        EXPECT_EQ(expected_text, response.text);
+    }
+}
+
+TEST(DifferentMethodTests, GetPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(DifferentMethodTests, PostGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(DifferentMethodTests, GetPostGetTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(DifferentMethodTests, PostGetPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(DifferentMethodTests, MultipleGetPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    for (size_t i = 0; i < 100; ++i) {
+        {
+            Response response = session.Get();
+            std::string expected_text{"Header reflect GET"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            Response response = session.Post();
+            std::string expected_text{"Header reflect POST"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+    }
+}
+
+TEST(DifferentMethodTests, MultipleDeleteHeadPutGetPostTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Url urlPost{server->GetBaseUrl() + "/post_reflect.html"};
+    Url urlPut{server->GetBaseUrl() + "/put.html"};
+    Session session;
+    for (size_t i = 0; i < 10; ++i) {
+        {
+            session.SetUrl(url);
+            Response response = session.Delete();
+            std::string expected_text{"Header reflect DELETE"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(urlPost);
+            std::string expectedBody = "a1b2c3Post";
+            session.SetBody(expectedBody);
+            Response response = session.Post();
+            EXPECT_EQ(expectedBody, response.text);
+            EXPECT_EQ(urlPost, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(url);
+            Response response = session.Get();
+            std::string expected_text{"Header reflect GET"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(urlPut);
+            session.SetPayload({{"x", "5"}});
+            Response response = session.Put();
+            std::string expected_text{
+                    "{\n"
+                    "  \"x\": 5\n"
+                    "}"};
+            EXPECT_EQ(expected_text, response.text);
+            EXPECT_EQ(urlPut, response.url);
+            EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+        {
+            session.SetUrl(url);
+            Response response = session.Head();
+            std::string expected_text{"Header reflect HEAD"};
+            EXPECT_EQ(url, response.url);
+            EXPECT_EQ(200, response.status_code);
+            EXPECT_EQ(ErrorCode::OK, response.error.code);
+        }
+    }
+}
+
+TEST(CurlHolderManipulateTests, CustomOptionTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    Session session;
+    session.SetUrl(url);
+    curl_easy_setopt(session.GetCurlHolder()->handle, CURLOPT_SSL_OPTIONS, CURLSSLOPT_ALLOW_BEAST | CURLSSLOPT_NO_REVOKE);
+    {
+        Response response = session.Get();
+        std::string expected_text{"Header reflect GET"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+    {
+        Response response = session.Post();
+        std::string expected_text{"Header reflect POST"};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(200, response.status_code);
+        EXPECT_EQ(ErrorCode::OK, response.error.code);
+    }
+}
+
+TEST(LocalPortTests, SetLocalPortTest) {
+    Url url{server->GetBaseUrl() + "/local_port.html"};
+    Session session;
+    session.SetUrl(url);
+    std::uint16_t const local_port = 60252; // beware of HttpServer::GetPort when changing
+    std::uint16_t const local_port_range = 5000;
+    session.SetLocalPort(local_port);
+    session.SetLocalPortRange(local_port_range);
+    // expected response: body contains port number in specified range
+    // NOTE: even when trying up to 5000 ports there is the chance that all of them are occupied.
+    // It would be possible to also check here for ErrorCode::INTERNAL_ERROR but that somehow seems
+    // wrong as then this test would pass in case SetLocalPort does not work at all
+    // or in other words: we have to assume that at least one port in the specified range is free.
+    Response response = session.Get();
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    std::uint16_t port_from_response = std::strtoul(response.text.c_str(), nullptr, 10);
+    EXPECT_EQ(errno, 0);
+    EXPECT_GE(port_from_response, local_port);
+    EXPECT_LE(port_from_response, local_port + local_port_range);
+}
+
+TEST(LocalPortTests, SetOptionTest) {
+    Url url{server->GetBaseUrl() + "/local_port.html"};
+    Session session;
+    session.SetUrl(url);
+    std::uint16_t const local_port = 60551; // beware of HttpServer::GetPort when changing
+    std::uint16_t const local_port_range = 5000;
+    session.SetOption(LocalPort(local_port));
+    session.SetOption(LocalPortRange(local_port_range));
+    // expected response: body contains port number in specified range
+    // NOTE: even when trying up to 5000 ports there is the chance that all of them are occupied.
+    // It would be possible to also check here for ErrorCode::INTERNAL_ERROR but that somehow seems
+    // wrong as then this test would pass in case SetOption(LocalPort) does not work at all
+    // or in other words: we have to assume that at least one port in the specified range is free.
+    Response response = session.Get();
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+    unsigned long port_from_response = std::strtoul(response.text.c_str(), nullptr, 10);
+    EXPECT_EQ(errno, 0);
+    EXPECT_GE(port_from_response, local_port);
+    EXPECT_LE(port_from_response, local_port + local_port_range);
+}
+
+// The tests using the port of the server as a source port for curl fail for windows.
+// The reason probably is that Windows allows two sockets to bind to the same port if the full hostname is different.
+// In these tests, mongoose binds to http://127.0.0.1:61936, while libcurl binds to a different hostname, but still port 61936.
+// This seems to be okay for Windows, however, these tests expect an error like on Linux and MacOS
+// We therefore, simply skip the tests if Windows is used
+#ifndef _WIN32
+TEST(LocalPortTests, SetLocalPortTestOccupied) {
+    Url url{server->GetBaseUrl() + "/local_port.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetLocalPort(server->GetPort());
+    // expected response: request cannot be made as port is already occupied
+    Response response = session.Get();
+    EXPECT_EQ(ErrorCode::INTERNAL_ERROR, response.error.code);
+}
+
+TEST(LocalPortTests, SetOptionTestOccupied) {
+    Url url{server->GetBaseUrl() + "/local_port.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetOption(LocalPort(server->GetPort()));
+    // expected response: request cannot be made as port is already occupied
+    Response response = session.Get();
+    EXPECT_EQ(ErrorCode::INTERNAL_ERROR, response.error.code);
+}
+#endif // _WIN32
+
+TEST(BasicTests, ReserveResponseString) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetReserveSize(4096);
+    Response response = session.Get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_GE(response.text.capacity(), 4096);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, AcceptEncodingTestWithMethodsStringMap) {
+    Url url{server->GetBaseUrl() + "/check_accept_encoding.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetAcceptEncoding({{AcceptEncodingMethods::deflate, AcceptEncodingMethods::gzip, AcceptEncodingMethods::zlib}});
+    Response response = session.Get();
+    std::string expected_text{"deflate, gzip, zlib"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, AcceptEncodingTestWithMethodsStringMapLValue) {
+    Url url{server->GetBaseUrl() + "/check_accept_encoding.html"};
+    Session session;
+    session.SetUrl(url);
+    AcceptEncoding accept_encoding{{AcceptEncodingMethods::deflate, AcceptEncodingMethods::gzip, AcceptEncodingMethods::zlib}};
+    session.SetAcceptEncoding(accept_encoding);
+    Response response = session.Get();
+    std::string expected_text{"deflate, gzip, zlib"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, AcceptEncodingTestWithCostomizedString) {
+    Url url{server->GetBaseUrl() + "/check_accept_encoding.html"};
+    Session session;
+    session.SetUrl(url);
+    session.SetAcceptEncoding({{"deflate", "gzip", "zlib"}});
+    Response response = session.Get();
+    std::string expected_text{"deflate, gzip, zlib"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, AcceptEncodingTestWithCostomizedStringLValue) {
+    Url url{server->GetBaseUrl() + "/check_accept_encoding.html"};
+    Session session;
+    session.SetUrl(url);
+    AcceptEncoding accept_encoding{{"deflate", "gzip", "zlib"}};
+    session.SetAcceptEncoding(accept_encoding);
+    Response response = session.Get();
+    std::string expected_text{"deflate, gzip, zlib"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(BasicTests, DisableHeaderExpect100ContinueTest) {
+    Url url{server->GetBaseUrl() + "/check_expect_100_continue.html"};
+    std::string filename{"test_file"};
+    std::string content{std::string(1024 * 1024, 'a')};
+    std::ofstream test_file;
+    test_file.open(filename);
+    test_file << content;
+    test_file.close();
+    Session session{};
+    session.SetUrl(url);
+    session.SetMultipart({{"file", File{"test_file"}}});
+    Response response = session.Post();
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncGetTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    cpr::AsyncResponse future = session->GetAsync();
+    std::string expected_text{"Hello world!"};
+    cpr::Response response = future.get();
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+}
+
+TEST(AsyncRequestsTests, AsyncGetMultipleTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+
+    std::vector<AsyncResponse> responses;
+    std::vector<std::shared_ptr<Session>> sessions;
+    for (size_t i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        session->SetUrl(url);
+        sessions.emplace_back(session);
+        responses.emplace_back(session->GetAsync());
+    }
+
+    for (cpr::AsyncResponse& future : responses) {
+        std::string expected_text{"Hello world!"};
+        cpr::Response response = future.get();
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+    }
+}
+
+TEST(AsyncRequestsTests, AsyncGetMultipleTemporarySessionTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 10; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        session->SetUrl(url);
+        responses.emplace_back(session->GetAsync());
+    }
+
+    for (cpr::AsyncResponse& future : responses) {
+        std::string expected_text{"Hello world!"};
+        cpr::Response response = future.get();
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+    }
+}
+
+TEST(AsyncRequestsTests, AsyncGetMultipleReflectTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::vector<AsyncResponse> responses;
+    for (size_t i = 0; i < 100; ++i) {
+        std::shared_ptr<Session> session = std::make_shared<Session>();
+        session->SetUrl(url);
+        session->SetParameters({{"key", std::to_string(i)}});
+        responses.emplace_back(session->GetAsync());
+    }
+    int i = 0;
+    for (cpr::AsyncResponse& future : responses) {
+        cpr::Response response = future.get();
+        std::string expected_text{"Hello world!"};
+        Url expected_url{url + "?key=" + std::to_string(i)};
+        EXPECT_EQ(expected_text, response.text);
+        EXPECT_EQ(expected_url, response.url);
+        EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+        EXPECT_EQ(200, response.status_code);
+        ++i;
+    }
+}
+
+TEST(AsyncRequestsTests, AsyncWritebackDownloadTest) {
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    cpr::Url url{server->GetBaseUrl() + "/download_gzip.html"};
+    session->SetUrl(url);
+    session->SetHeader(cpr::Header{{"Accept-Encoding", "gzip"}});
+    cpr::AsyncResponse future = session->DownloadAsync(cpr::WriteCallback{write_data, 0});
+    cpr::Response response = future.get();
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(cpr::ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncPostTest) {
+    Url url{server->GetBaseUrl() + "/url_post.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload({{"x", "5"}});
+    cpr::AsyncResponse future = session->PostAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(201, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncPutTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload({{"x", "5"}});
+    cpr::AsyncResponse future = session->PutAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncHeadTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    cpr::AsyncResponse future = session->HeadAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncDeleteTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    cpr::AsyncResponse future = session->DeleteAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect DELETE"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncOptionsTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    cpr::AsyncResponse future = session->OptionsAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect OPTIONS"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(AsyncRequestsTests, AsyncPatchTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    cpr::AsyncResponse future = session->PatchAsync();
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect PATCH"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, GetCallbackTest) {
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->GetCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{"Hello world!"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, PostCallbackTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->PostCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect POST"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, PutCallbackTest) {
+    Url url{server->GetBaseUrl() + "/put.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    session->SetPayload({{"x", "5"}});
+    auto future = session->PutCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{
+            "{\n"
+            "  \"x\": 5\n"
+            "}"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"application/json"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, HeadCallbackTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->HeadCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{""};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, DeleteCallbackTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->DeleteCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect DELETE"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, OptionsCallbackTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->OptionsCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect OPTIONS"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+TEST(CallbackTests, PatchCallbackTest) {
+    Url url{server->GetBaseUrl() + "/header_reflect.html"};
+    std::shared_ptr<Session> session = std::make_shared<Session>();
+    session->SetUrl(url);
+    auto future = session->PatchCallback([](Response r) { return r; });
+    std::this_thread::sleep_for(sleep_time);
+    cpr::Response response = future.get();
+    std::string expected_text{"Header reflect PATCH"};
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code);
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ::testing::AddGlobalTestEnvironment(server);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/ssl_tests.cpp b/Src/external_dependencies/cpr/test/ssl_tests.cpp
new file mode 100644
index 00000000..41c73162
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/ssl_tests.cpp
@@ -0,0 +1,166 @@
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <cpr/cprtypes.h>
+#include <cpr/filesystem.h>
+#include <cpr/ssl_options.h>
+
+#include "httpsServer.hpp"
+
+
+using namespace cpr;
+
+static HttpsServer* server;
+
+static std::string caCertPath;
+static std::string serverPubKeyPath;
+static std::string clientKeyPath;
+static std::string clientCertPath;
+
+std::string loadCertificateFromFile(const std::string certPath) {
+    std::ifstream certFile(certPath);
+    std::stringstream buffer;
+    buffer << certFile.rdbuf();
+    return buffer.str();
+}
+
+TEST(SslTests, HelloWorldTestSimpel) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string baseDirPath{server->getBaseDirPath()};
+    std::string crtPath{baseDirPath + "certificates/"};
+    std::string keyPath{baseDirPath + "keys/"};
+
+    SslOptions sslOpts = Ssl(ssl::CaPath{crtPath + "root-ca.crt"}, ssl::CertFile{crtPath + "client.crt"}, ssl::KeyFile{keyPath + "client.key"}, ssl::VerifyPeer{false}, ssl::PinnedPublicKey{keyPath + "server.pub"}, ssl::VerifyHost{false}, ssl::VerifyStatus{false});
+    Response response = cpr::Get(url, sslOpts, Timeout{5000}, Verbose{});
+    std::string expected_text = "Hello world!";
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code) << response.error.message;
+}
+
+TEST(SslTests, HelloWorldTestFull) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string baseDirPath{server->getBaseDirPath()};
+    std::string crtPath{baseDirPath + "certificates/"};
+    std::string keyPath{baseDirPath + "keys/"};
+
+    SslOptions sslOpts = Ssl(ssl::TLSv1{}, ssl::ALPN{false}, ssl::NPN{false}, ssl::CaPath{crtPath + "root-ca.crt"}, ssl::CertFile{crtPath + "client.crt"}, ssl::KeyFile{keyPath + "client.key"}, ssl::PinnedPublicKey{keyPath + "server.pub"}, ssl::VerifyPeer{false}, ssl::VerifyHost{false}, ssl::VerifyStatus{false});
+    Response response = cpr::Get(url, sslOpts, Timeout{5000}, Verbose{});
+    std::string expected_text = "Hello world!";
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code) << response.error.message;
+}
+
+TEST(SslTests, GetCertInfos) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    Url url{server->GetBaseUrl() + "/hello.html"};
+    std::string baseDirPath{server->getBaseDirPath()};
+    std::string crtPath{baseDirPath + "certificates/"};
+    std::string keyPath{baseDirPath + "keys/"};
+
+    SslOptions sslOpts = Ssl(ssl::CaPath{crtPath + "root-ca.crt"}, ssl::CertFile{crtPath + "client.crt"}, ssl::KeyFile{keyPath + "client.key"}, ssl::VerifyPeer{false}, ssl::VerifyHost{false}, ssl::VerifyStatus{false});
+
+    Response response = cpr::Get(url, sslOpts, Timeout{5000}, Verbose{});
+    std::vector<CertInfo> certInfos = response.GetCertInfos();
+
+    std::string expected_text = "Hello world!";
+    std::vector<CertInfo> expectedCertInfos{
+            CertInfo{
+                    "Subject:CN = test-server",
+                    "Issuer:C = GB, O = Example, CN = Root CA",
+                    "Version:2",
+                    "Serial Number:28c252871ec62a626a98006b0bf2888f",
+                    "Signature Algorithm:ED25519",
+                    "Public Key Algorithm:ED25519",
+                    "X509v3 Subject Alternative Name:DNS:localhost, IP Address:127.0.0.1, IP Address:0:0:0:0:0:0:0:1",
+                    "X509v3 Subject Key Identifier:39:C1:81:38:01:DC:55:38:E5:2F:4E:7A:D0:4C:84:7B:B7:27:D3:AF",
+                    "X509v3 Authority Key Identifier:E4:F2:F3:85:0E:B7:85:75:84:76:E3:43:D1:B6:9D:14:B8:E2:A4:B7",
+                    "Start date:Jun 29 11:33:07 2022 GMT",
+                    "Expire date:Jun 28 11:33:07 2027 GMT",
+                    "Signature:2e:0d:a1:0d:f5:90:77:e9:eb:84:7d:80:63:63:4d:8a:eb:d9:23:57:1f:21:2a:ed:81:b4:a8:58:b9:00:1b:cb:5c:90:1b:33:6b:f6:ec:42:20:63:54:d6:60:ee:37:14:1b:1c:95:0b:33:ea:67:29:d4:cc:d9:7e:34:fd:47:04:",
+                    R"(Cert:-----BEGIN CERTIFICATE-----
+MIIBdTCCASegAwIBAgIQKMJShx7GKmJqmABrC/KIjzAFBgMrZXAwMTELMAkGA1UE
+BhMCR0IxEDAOBgNVBAoMB0V4YW1wbGUxEDAOBgNVBAMMB1Jvb3QgQ0EwHhcNMjIw
+NjI5MTEzMzA3WhcNMjcwNjI4MTEzMzA3WjAWMRQwEgYDVQQDDAt0ZXN0LXNlcnZl
+cjAqMAUGAytlcAMhAI64JU5RjfdEG1KQMxS5DQWkiGlKIQO7ye4mNFq9QleTo3Aw
+bjAsBgNVHREEJTAjgglsb2NhbGhvc3SHBH8AAAGHEAAAAAAAAAAAAAAAAAAAAAEw
+HQYDVR0OBBYEFDnBgTgB3FU45S9OetBMhHu3J9OvMB8GA1UdIwQYMBaAFOTy84UO
+t4V1hHbjQ9G2nRS44qS3MAUGAytlcANBAC4NoQ31kHfp64R9gGNjTYrr2SNXHyEq
+7YG0qFi5ABvLXJAbM2v27EIgY1TWYO43FBsclQsz6mcp1MzZfjT9RwQ=
+-----END CERTIFICATE-----
+)",
+            },
+    };
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code) << response.error.message;
+    EXPECT_EQ(1, certInfos.size());
+    for (auto certInfo_it = certInfos.begin(), expectedCertInfo_it = expectedCertInfos.begin(); certInfo_it != certInfos.end() && expectedCertInfo_it != expectedCertInfos.end(); certInfo_it++, expectedCertInfo_it++) {
+        for (auto entry_it = (*certInfo_it).begin(), expectedEntry_it = (*expectedCertInfo_it).begin(); entry_it != (*certInfo_it).end() && expectedEntry_it != (*expectedCertInfo_it).end(); entry_it++, expectedEntry_it++) {
+            std::string search_string = "Identifier:keyid:";
+            std::size_t search_index = (*entry_it).find(search_string);
+            if (search_index != std::string::npos) {
+                (*entry_it).replace(search_index, search_string.length(), "Identifier:");
+                search_string = "\n";
+                search_index = (*entry_it).find(search_string);
+                if (search_index != std::string::npos) {
+                    (*entry_it).replace(search_index, search_string.length(), "");
+                }
+            }
+            EXPECT_EQ(*expectedEntry_it, *entry_it);
+        }
+        std::cout << std::endl;
+    }
+}
+
+#if SUPPORT_CURLOPT_SSL_CTX_FUNCTION
+TEST(SslTests, LoadCertFromBufferTestSimpel) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    Url url{server->GetBaseUrl() + "/hello.html"};
+
+    std::string baseDirPath{server->getBaseDirPath()};
+    std::string crtPath{baseDirPath + "certificates/"};
+    std::string keyPath{baseDirPath + "keys/"};
+    std::string certBuffer = loadCertificateFromFile(crtPath + "root-ca.crt");
+    SslOptions sslOpts = Ssl(ssl::CaBuffer{std::move(certBuffer)}, ssl::CertFile{crtPath + "client.crt"}, ssl::KeyFile{keyPath + "client.key"}, ssl::VerifyPeer{false}, ssl::VerifyHost{false}, ssl::VerifyStatus{false});
+    Response response = cpr::Get(url, sslOpts, Timeout{5000}, Verbose{});
+    std::string expected_text = "Hello world!";
+    EXPECT_EQ(expected_text, response.text);
+    EXPECT_EQ(url, response.url);
+    EXPECT_EQ(std::string{"text/html"}, response.header["content-type"]);
+    EXPECT_EQ(200, response.status_code);
+    EXPECT_EQ(ErrorCode::OK, response.error.code) << response.error.message;
+}
+#endif
+
+fs::path getBasePath(const std::string& execPath) {
+    return fs::path(fs::path{execPath}.parent_path().string() + "/").make_preferred();
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    fs::path baseDirPath = fs::path{getBasePath(argv[0]).string() + "data/"};
+    fs::path serverCertPath = fs::path{baseDirPath}.append("certificates/server.crt");
+    fs::path serverKeyPath = fs::path{baseDirPath}.append("keys/server.key");
+    server = new HttpsServer(std::move(baseDirPath), std::move(serverCertPath), std::move(serverKeyPath));
+    ::testing::AddGlobalTestEnvironment(server);
+
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/structures_tests.cpp b/Src/external_dependencies/cpr/test/structures_tests.cpp
new file mode 100644
index 00000000..026362e4
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/structures_tests.cpp
@@ -0,0 +1,62 @@
+#include "cpr/cprtypes.h"
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/parameters.h>
+#include <cpr/payload.h>
+
+using namespace cpr;
+
+TEST(PayloadTests, UseStringVariableTest) {
+    std::string value1 = "hello";
+    std::string key2 = "key2";
+    Payload payload{{"key1", value1}, {key2, "world"}};
+
+    std::string expected = "key1=hello&key2=world";
+    EXPECT_EQ(payload.GetContent(CurlHolder()), expected);
+}
+
+TEST(PayloadTests, DisableEncodingTest) {
+    std::string key1 = "key1";
+    std::string key2 = "key2§$%&/";
+    std::string value1 = "hello.,.,";
+    std::string value2 = "hello";
+    Payload payload{{key1, value1}, {key2, value2}};
+    payload.encode = false;
+
+    std::string expected = key1 + '=' + value1 + '&' + key2 + '=' + value2;
+    EXPECT_EQ(payload.GetContent(CurlHolder()), expected);
+}
+
+TEST(ParametersTests, UseStringVariableTest) {
+    std::string value1 = "hello";
+    std::string key2 = "key2";
+    Parameters parameters{{"key1", value1}, {key2, "world"}};
+
+    std::string expected = "key1=hello&key2=world";
+    EXPECT_EQ(parameters.GetContent(CurlHolder()), expected);
+}
+
+TEST(ParametersTests, DisableEncodingTest) {
+    std::string key1 = "key1";
+    std::string key2 = "key2§$%&/";
+    std::string value1 = "hello.,.,";
+    std::string value2 = "hello";
+    Parameters parameters{{key1, value1}, {key2, value2}};
+    parameters.encode = false;
+
+    std::string expected = key1 + '=' + value1 + '&' + key2 + '=' + value2;
+    EXPECT_EQ(parameters.GetContent(CurlHolder()), expected);
+}
+
+TEST(UrlToAndFromString, UrlTests) {
+    std::string s{"https://github.com/whoshuu/cpr"};
+    cpr::Url url = s;
+    EXPECT_EQ(s, url.str());
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/util_tests.cpp b/Src/external_dependencies/cpr/test/util_tests.cpp
new file mode 100644
index 00000000..33977530
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/util_tests.cpp
@@ -0,0 +1,237 @@
+#include <gtest/gtest.h>
+
+#include <string>
+
+#include <cpr/cprtypes.h>
+#include <cpr/util.h>
+
+using namespace cpr;
+
+TEST(UtilParseCookiesTests, BasicParseTest) {
+    Cookies expectedCookies{{Cookie("status", "on", "127.0.0.1", false, "/", false, std::chrono::system_clock::from_time_t(1656908640)), Cookie("name", "debug", "127.0.0.1", false, "/", false, std::chrono::system_clock::from_time_t(0))}};
+    curl_slist* raw_cookies = new curl_slist{
+            (char*) "127.0.0.1\tFALSE\t/\tFALSE\t1656908640\tstatus\ton",
+            new curl_slist{
+                    (char*) "127.0.0.1\tFALSE\t/\tFALSE\t0\tname\tdebug",
+                    nullptr,
+            },
+    };
+    Cookies cookies = util::parseCookies(raw_cookies);
+    for (auto cookie = cookies.begin(), expectedCookie = expectedCookies.begin(); cookie != cookies.end() && expectedCookie != expectedCookies.end(); cookie++, expectedCookie++) {
+        EXPECT_EQ(expectedCookie->GetName(), cookie->GetName());
+        EXPECT_EQ(expectedCookie->GetValue(), cookie->GetValue());
+        EXPECT_EQ(expectedCookie->GetDomain(), cookie->GetDomain());
+        EXPECT_EQ(expectedCookie->IsIncludingSubdomains(), cookie->IsIncludingSubdomains());
+        EXPECT_EQ(expectedCookie->GetPath(), cookie->GetPath());
+        EXPECT_EQ(expectedCookie->IsHttpsOnly(), cookie->IsHttpsOnly());
+        EXPECT_EQ(expectedCookie->GetExpires(), cookie->GetExpires());
+    }
+    delete raw_cookies->next;
+    delete raw_cookies;
+}
+
+TEST(UtilParseHeaderTests, BasicParseTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\r\n"
+            "Server: nginx\r\n"
+            "Date: Sun, 05 Mar 2017 00:34:54 GMT\r\n"
+            "Content-Type: application/json\r\n"
+            "Content-Length: 351\r\n"
+            "Connection: keep-alive\r\n"
+            "Access-Control-Allow-Origin: *\r\n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "\r\n"};
+    Header header = util::parseHeader(header_string);
+    EXPECT_EQ(std::string{"nginx"}, header["Server"]);
+    EXPECT_EQ(std::string{"Sun, 05 Mar 2017 00:34:54 GMT"}, header["Date"]);
+    EXPECT_EQ(std::string{"application/json"}, header["Content-Type"]);
+    EXPECT_EQ(std::string{"351"}, header["Content-Length"]);
+    EXPECT_EQ(std::string{"keep-alive"}, header["Connection"]);
+    EXPECT_EQ(std::string{"*"}, header["Access-Control-Allow-Origin"]);
+    EXPECT_EQ(std::string{"true"}, header["Access-Control-Allow-Credentials"]);
+}
+
+TEST(UtilParseHeaderTests, NewlineTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\r\n"
+            "Auth:\n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "\r\n"};
+    Header header = util::parseHeader(header_string);
+    EXPECT_EQ(std::string{""}, header["Server"]);
+    EXPECT_EQ(std::string{"true"}, header["Access-Control-Allow-Credentials"]);
+}
+
+TEST(UtilParseHeaderTests, SpaceNewlineTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\r\n"
+            "Auth: \n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "\r\n"};
+    Header header = util::parseHeader(header_string);
+    EXPECT_EQ(std::string{""}, header["Server"]);
+    EXPECT_EQ(std::string{"true"}, header["Access-Control-Allow-Credentials"]);
+}
+
+TEST(UtilParseHeaderTests, CarriageReturnNewlineTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\n"
+            "Auth:\r\n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "\r\n"};
+    Header header = util::parseHeader(header_string);
+    EXPECT_EQ(std::string{""}, header["Server"]);
+    EXPECT_EQ(std::string{"true"}, header["Access-Control-Allow-Credentials"]);
+}
+
+TEST(UtilParseHeaderTests, SpaceCarriageReturnNewlineTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\n"
+            "Auth: \r\n"
+            "Access-Control-Allow-Credentials: true\r\n"
+            "\r\n"};
+    Header header = util::parseHeader(header_string);
+    EXPECT_EQ(std::string{""}, header["Server"]);
+    EXPECT_EQ(std::string{"true"}, header["Access-Control-Allow-Credentials"]);
+}
+
+TEST(UtilParseHeaderTests, BasicStatusLineTest) {
+    std::string header_string{
+            "HTTP/1.1 200 OK\r\n"
+            "Server: nginx\r\n"
+            "Content-Type: application/json\r\n"
+            "\r\n"};
+    std::string status_line;
+    std::string reason;
+    Header header = util::parseHeader(header_string, &status_line, &reason);
+    EXPECT_EQ(std::string{"HTTP/1.1 200 OK"}, status_line);
+    EXPECT_EQ(std::string{"OK"}, reason);
+    EXPECT_EQ(std::string{"nginx"}, header["Server"]);
+    EXPECT_EQ(std::string{"application/json"}, header["Content-Type"]);
+}
+
+TEST(UtilParseHeaderTests, NewlineStatusLineTest) {
+    std::string header_string{
+            "HTTP/1.1 407 Proxy Authentication Required\n"
+            "Server: nginx\r\n"
+            "Content-Type: application/json\r\n"
+            "\r\n"};
+    std::string status_line;
+    std::string reason;
+    Header header = util::parseHeader(header_string, &status_line, &reason);
+    EXPECT_EQ(std::string{"HTTP/1.1 407 Proxy Authentication Required"}, status_line);
+    EXPECT_EQ(std::string{"Proxy Authentication Required"}, reason);
+    EXPECT_EQ(std::string{"nginx"}, header["Server"]);
+    EXPECT_EQ(std::string{"application/json"}, header["Content-Type"]);
+}
+
+TEST(UtilParseHeaderTests, NoReasonSpaceTest) {
+    std::string header_string{
+            "HTTP/1.1 200 \n"
+            "Server: nginx\r\n"
+            "Content-Type: application/json\r\n"
+            "\r\n"};
+    std::string status_line;
+    std::string reason;
+    Header header = util::parseHeader(header_string, &status_line, &reason);
+    EXPECT_EQ(std::string{"HTTP/1.1 200"}, status_line);
+    EXPECT_EQ(std::string{""}, reason);
+    EXPECT_EQ(std::string{"nginx"}, header["Server"]);
+    EXPECT_EQ(std::string{"application/json"}, header["Content-Type"]);
+}
+
+TEST(UtilParseHeaderTests, NoReasonTest) {
+    std::string header_string{
+            "HTTP/1.1 200\n"
+            "Server: nginx\r\n"
+            "Content-Type: application/json\r\n"
+            "\r\n"};
+    std::string status_line;
+    std::string reason;
+    Header header = util::parseHeader(header_string, &status_line, &reason);
+    EXPECT_EQ(std::string{"HTTP/1.1 200"}, status_line);
+    EXPECT_EQ(std::string{""}, reason);
+    EXPECT_EQ(std::string{"nginx"}, header["Server"]);
+    EXPECT_EQ(std::string{"application/json"}, header["Content-Type"]);
+}
+
+TEST(UtilUrlEncodeTests, UnicodeEncoderTest) {
+    std::string input = "一二三";
+    std::string result = util::urlEncode(input);
+    std::string expected = "%E4%B8%80%E4%BA%8C%E4%B8%89";
+    EXPECT_EQ(result, expected);
+}
+
+TEST(UtilUrlEncodeTests, AsciiEncoderTest) {
+    std::string input = "Hello World!";
+    std::string result = util::urlEncode(input);
+    std::string expected = "Hello%20World%21";
+    EXPECT_EQ(result, expected);
+}
+
+TEST(UtilUrlDecodeTests, UnicodeDecoderTest) {
+    std::string input = "%E4%B8%80%E4%BA%8C%E4%B8%89";
+    std::string result = util::urlDecode(input);
+    std::string expected = "一二三";
+    EXPECT_EQ(result, expected);
+}
+
+TEST(UtilUrlDecodeTests, AsciiDecoderTest) {
+    std::string input = "Hello%20World%21";
+    std::string result = util::urlDecode(input);
+    std::string expected = "Hello World!";
+    EXPECT_EQ(result, expected);
+}
+
+TEST(UtilSecureStringClearTests, EmptyStringTest) {
+    std::string input;
+    util::secureStringClear(input);
+    EXPECT_TRUE(input.empty());
+}
+
+TEST(UtilSecureStringClearTests, NotEmptyStringTest) {
+    std::string input = "Hello World!";
+    util::secureStringClear(input);
+    EXPECT_TRUE(input.empty());
+}
+
+TEST(UtilIsTrueTests, TrueTest) {
+    {
+        std::string input = "TRUE";
+        bool output = util::isTrue(input);
+        EXPECT_TRUE(output);
+    }
+    {
+        std::string input = "True";
+        bool output = util::isTrue(input);
+        EXPECT_TRUE(output);
+    }
+    {
+        std::string input = "true";
+        bool output = util::isTrue(input);
+        EXPECT_TRUE(output);
+    }
+}
+
+TEST(UtilIsTrueTests, FalseTest) {
+    {
+        std::string input = "FALSE";
+        bool output = util::isTrue(input);
+        EXPECT_FALSE(output);
+    }
+    {
+        std::string input = "False";
+        bool output = util::isTrue(input);
+        EXPECT_FALSE(output);
+    }
+    {
+        std::string input = "false";
+        bool output = util::isTrue(input);
+        EXPECT_FALSE(output);
+    }
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/Src/external_dependencies/cpr/test/version_tests.cpp b/Src/external_dependencies/cpr/test/version_tests.cpp
new file mode 100644
index 00000000..4c589d29
--- /dev/null
+++ b/Src/external_dependencies/cpr/test/version_tests.cpp
@@ -0,0 +1,65 @@
+#include <cctype>
+#include <cpr/cpr.h>
+#include <cstddef>
+#include <gtest/gtest.h>
+#include <string>
+
+
+TEST(VersionTests, StringVersionExists) {
+#ifndef CPR_VERSION
+    EXPECT_TRUE(false);
+#endif // CPR_VERSION
+}
+
+TEST(VersionTests, StringVersionValid) {
+    EXPECT_TRUE(CPR_VERSION != nullptr);
+    std::string version = CPR_VERSION;
+
+    // Check if the version string is: '\d+\.\d+\.\d+'
+    bool digit = true;
+    size_t dotCount = 0;
+    for (size_t i = 0; i < version.size(); i++) {
+        if (i == 0) {
+            EXPECT_TRUE(std::isdigit(version[i]));
+        } else if (digit) {
+            if (version[i] == '.') {
+                digit = false;
+                dotCount++;
+                continue;
+            }
+        }
+        EXPECT_TRUE(std::isdigit(version[i]));
+        digit = true;
+    }
+    EXPECT_EQ(dotCount, 2);
+}
+
+TEST(VersionTests, VersionMajorExists) {
+#ifndef CPR_VERSION_MAJOR
+    EXPECT_TRUE(false);
+#endif // CPR_VERSION_MAJOR
+}
+
+TEST(VersionTests, VersionMinorExists) {
+#ifndef CPR_VERSION_MINOR
+    EXPECT_TRUE(false);
+#endif // CPR_VERSION_MINOR
+}
+
+TEST(VersionTests, VersionPatchExists) {
+#ifndef CPR_VERSION_PATCH
+    EXPECT_TRUE(false);
+#endif // CPR_VERSION_PATCH
+}
+
+TEST(VersionTests, VersionNumExists) {
+#ifndef CPR_VERSION_NUM
+    EXPECT_TRUE(false);
+#endif // CPR_VERSION_NUM
+}
+
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}