Add RestSslClient; add User-Agent header.

example/rest_github_client/CMakeLists.txt

@@ -0,0 +1,10 @@
+add_executable(rest_github_client main.cc)
+
+set(SSL_LIBS ${OPENSSL_LIBRARIES})
+if(WIN32)
+	set(SSL_LIBS ${SSL_LIBS} crypt32)
+endif()
+
+target_link_libraries(rest_github_client webcc ${Boost_LIBRARIES})
+target_link_libraries(rest_github_client "${CMAKE_THREAD_LIBS_INIT}")
+target_link_libraries(rest_github_client ${SSL_LIBS})

example/rest_github_client/main.cc

@@ -0,0 +1,26 @@
+#include <iostream>
+
+#include "webcc/rest_ssl_client.h"
+#include "webcc/logger.h"
+
+void Test() {
+  webcc::RestSslClient client("api.github.com");
+
+  if (client.Get("/events")) {
+    std::cout << client.response()->content() << std::endl;
+  } else {
+    std::cout << webcc::DescribeError(client.error());
+    if (client.timed_out()) {
+      std::cout << " (timed out)";
+    }
+    std::cout << std::endl;
+  }
+}
+
+int main() {
+  WEBCC_LOG_INIT("", webcc::LOG_CONSOLE);
+
+  Test();
+
+  return 0;
+}