text: #include <uWS.h>
  
  int main()
  {
      uWS::Hub h;
  
      h.onMessage([](uWS::WebSocket<uWS::SERVER> *ws, char *message, size_t length, uWS::OpCode opCode) {
          ws->send(message, length, opCode);
      });
  
      if (h.listen(3000)) {
          h.run();
      }
  }
  