Don't use TLS for explicitly specified ip adresses

src/wesnothd_connection.cpp

@@ -80,12 +80,16 @@ wesnothd_connection::wesnothd_connection(const std::string& host, const std::str
 	, bytes_read_(0)
 {
 	MPTEST_LOG;
-#if BOOST_VERSION >= 106600
-	resolver_.async_resolve(host, service,
-#else
-	resolver_.async_resolve(boost::asio::ip::tcp::resolver::query(host, service),
-#endif
-		std::bind(&wesnothd_connection::handle_resolve, this, std::placeholders::_1, std::placeholders::_2));
+
+	error_code ec;
+	auto result = resolver_.resolve(host, service, boost::asio::ip::resolver_query_base::numeric_host, ec);
+	if(!ec) { // if numeric resolve succeeds then we got raw ip address so TLS host name validation would never pass
+		use_tls_ = false;
+		boost::asio::post(io_context_, [this, ec, result](){ handle_resolve(ec, { result } ); } );
+	} else {
+		resolver_.async_resolve(host, service, 
+			std::bind(&wesnothd_connection::handle_resolve, this, std::placeholders::_1, std::placeholders::_2));
+	}
 
 	// Starts the worker thread. Do this *after* the above async_resolve call or it will just exit immediately!
 	worker_thread_ = std::thread([this]() {