Accessing a third-party server via the API (WebSocketClient)

[UInSomnia]

How can I access the API of a third-party server, for example, to use the SMS sending service to the client? Need to use drogon::WebSocketClient or something else from drogon? With such an entry as in the code, the debugging text is output to the terminal:
20230708 08:36:57.087709 UTC 3400 INFO Connecting to WebSocket at wss://echo.websocket.org - main.cc:54
20230708 08:37:12.093900 UTC 3400 INFO by! - main.cc:81 That is, the request is not processed

`std::string server("wss://echo.websocket.org");
std::string path = "/";
std::optional<uint16_t> port;

std::string serverString;
if (port.value_or(0) != 0)
    serverString = server + ":" + std::to_string(port.value());
else
    serverString = server;
// LOG_DEBUG << "serverString = " << serverString;
auto wsPtr = drogon::WebSocketClient::newWebSocketClient(serverString);
auto req = drogon::HttpRequest::newHttpRequest();
req->setPath(path);
//LOG_DEBUG << "set_path = "<< req->getPath();

wsPtr->setMessageHandler([](const std::string &message,
                            const drogon::WebSocketClientPtr &,
                            const drogon::WebSocketMessageType &type)
                         {
    std::string messageType = "Unknown";
    if (type == drogon::WebSocketMessageType::Text)
        messageType = "text";
    else if (type == drogon::WebSocketMessageType::Pong)
        messageType = "pong";
    else if (type == drogon::WebSocketMessageType::Ping)
        messageType = "ping";
    else if (type == drogon::WebSocketMessageType::Binary)
        messageType = "binary";
    else if (type == drogon::WebSocketMessageType::Close)
        messageType = "Close";

    LOG_INFO << "new message (" << messageType << "): " << message; });

wsPtr->setConnectionClosedHandler([](const drogon::WebSocketClientPtr &)
                                  { LOG_INFO << "WebSocket connection closed!"; });

LOG_INFO << "Connecting to WebSocket at " << server;
wsPtr->connectToServer(
    req,
    [](drogon::ReqResult r,
       const drogon::HttpResponsePtr &,
       const drogon::WebSocketClientPtr &wsPtr)
    {
        LOG_DEBUG <<"ReqResult = "<< r;
        if (r != drogon::ReqResult::Ok)
        {
            LOG_ERROR << "Failed to establish WebSocket connection!";
            wsPtr->stop();
            return;
        }
        LOG_INFO << "WebSocket connected!";
        using namespace std::chrono_literals;
        wsPtr->getConnection()->setPingMessage("", 2s);
        wsPtr->getConnection()->send("hello!");
        
    });

// Quit the application after 15 seconds
drogon::app().getLoop()->runAfter(15, []()
                                  { drogon::app().quit(); });

drogon::app().setLogLevel(trantor::Logger::kDebug);
drogon::app().run();
LOG_INFO << "bye!";
return 0;`