dart_tcpsocket

Dart Persistent TCP Socket Client Example

All examples I found previously online, disconnected after sending, so I made my own version that seems to work ok.

This example has a persistent connection and listener that allows the TCP channel to stay open so you can send and receive multiple strings of data.

androidSock.dart - main tcp socket control

messageHandler.dart - a solution to sync tx/rx and pass incoming data to commandHandler.dart

commandHandler.dart - handle incoming messages and run associated functions.

messageBuilder.dart - a utility to build messages to send for a simple protocol.

In main:

import 'androidSock.dart';
import 'messageHandler.dart';

Comms bbComms; 

class MyApp extends StatelessWidget {
 // This widget is the root of your application.
  MyApp(){
    bbComms = AndroidSock();
  }
...
 void sendStart(){
    bbComms.messaging.sendMessage(MessageType.START_GAME, callback: widget.callback);
 }
...