I don't recall anytime the server couldn't receive the message coming from the AsyncClient
@denman0000_gitlab Actually quite the opposite happened with me. When the asyncClient just connects to the server, the client couldn't get through onData the messages, then when I connect again to the server then it's fine
Maybe that is a hint to you. After just connecting, go and disconnect say 1 second later, the go ahead and connect again and send whatever you want...
@denman0000_gitlab perhaps a better hint is to put your server locally (in your LAN or WLAN) and not connect through the Internet (in case your server was remote).