cocos2d-x 3.8beta0: websocket still not support for cookie

[lannes]

On web platform browser support cookie automatic, but on device developer must manager cookie for websocket by modify onSocketCallback method of WebSocket class as below:

case LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER:
{
    if (!_cookie.empty()) {
        char **p = (char **)in;
        if (len < 100)
            return 1;

        *p += sprintf(*p, "Cookie: %s\x0d\x0a", _cookie.c_str());
        return 0;
    }
 }
 break;

Please support cookie for WebSocket, thank you very much!