socket在flutter中的简单应用

socket作为服务端

直接上代码

static Socket mSocket;
static initSocket() async{
 String host="192.168.1.6";
 int  port=50001;
  var server=await ServerSocket.bind(host, port);
    await for(var socket in server) {
      socket.listen(dataHandler,
          onError: errorHandler,
          onDone: doneHandler,
          cancelOnError:false);
      mSocket=socket;
//将向socket客户端发送命令传到写方法里进行转换
      dataWrite(***);
    //周期定时器
      setTimeStart();
    }
}
 ///发送命令
  static void dataWrite(data) async{
      mSocket.add(***);//    ***是list<int>格式的数据
//也有mSocket.write()等方法,挑选适合的放松方式
  }
 ///接收报文
  static void dataHandler(data){
    try {
    
      print('接收到的数据${data}');
      if(data is List) {
        print('is List');
        } else if (data is int) {
          print('${data} is int');
        } else if (data is double) {
          print('${data} is double');
        } else {
          print('${data} is other type');
        }
    } catch (e) {
      print(e);
    }
    mSocket.flush();
  }

///socket捕获异常
 static  void errorHandler(error, StackTrace trace){
    print("-***********"+error);
  }

///socket关闭处理
 static  void doneHandler(){
    mSocket.destroy();
  }

socket作为客户端

监听的方法与服务端是一样的
直接上代码:

await Socket.connect(host,port).then((Socket socket)  {
      mSocket = socket;
      mSocket.listen(dataHandler,
          onError: errorHandler,
          onDone: doneHandler,
          cancelOnError:false
      );
      if(socket!=null){
        dataWrite(***);  
      }

    }).catchError((e) {
      print("无法连接:$e");
    });