Add basic example for the http client

Author: lpcvoid

examples/CMakeLists.txt

@@ -1,5 +1,9 @@
 set(EXAMPLE_SOURCES echo_server.cpp daytime_client.cpp threadpool.cpp time_client.cpp)
 
+if (WITH_HTTP)
+    set(EXAMPLE_SOURCES ${EXAMPLE_SOURCES} http_client.cpp)
+endif()
+
 foreach (examplesource ${EXAMPLE_SOURCES})
     string(REPLACE ".cpp" "" examplename ${examplesource})
     add_executable(${examplename} ${examplesource})

examples/http_client.cpp

@@ -1,3 +1,35 @@
-//
-// Created by lpcvoid on 25.12.22.
-//
+#include "../src/netlib.hpp"
+#include "../src/http/client.hpp"
+#include "../src/http/http.hpp"
+#include <csignal>
+#include <iomanip>
+#include <iostream>
+
+
+void exit_handler(int s){
+    std::cout << "Goodbye!" << std::endl;
+    exit(EXIT_SUCCESS);
+}
+
+int main(int argc, char** argv)
+{
+    netlib::http::http_client client;
+
+    auto res = client.get("http://example.com");
+
+    if (res.second) {
+        std::cerr << "Error: " << res.second.message() << std::endl;
+        exit(1);
+    }
+
+    std::cout << "Got HTTP response: " << res.first->response_code <<
+        ", version " << res.first->version.first << "." << res.first->version.second << std::endl;
+    std::cout << "Header entries:" << std::endl;
+    std::for_each(res.first->headers.begin(), res.first->headers.end(), [](auto header_entry) {
+       std::cout << header_entry.first << " = " << header_entry.second << std::endl;
+    });
+    std::cout << "Body:" << std::endl;
+    std::cout << res.first.value().body << std::endl;
+
+    signal(SIGINT, exit_handler);
+}