socket编程

 1  //建立连接 客户端
 2                 Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 3 //这里的值我写在全局了，FM_JTApiUrl是IP,FM_JTDKH是端口号
 4                 clientSocket.Connect(Global.FM_JTApiUrl, Convert.ToInt32(Global.FM_JTDKH));
 5                 //转json  doorinfo是需要往端口发送的信息
 6                 string sendStr = JsonConvert.SerializeObject(doorinfo);
 7                 byte[] sendBytes = Encoding.ASCII.GetBytes(sendStr);
 8 //这里是往端口发数据             
 9                 clientSocket.Send(sendBytes);
10 //返回的信息 12288为接收的信息大小，可自行改动
11                 string recStr = "";
12                 byte[] recBytes = new byte[12288];
13                 int bytes = clientSocket.Receive(recBytes, recBytes.Length, 0);
14                 recStr += Encoding.ASCII.GetString(recBytes, 0, bytes);        

 1 //配置IP及端口 同上
 2             IPAddress ip = IPAddress.Parse(Global.FM_ApiUrl);
 3             IPEndPoint ipe = new IPEndPoint(ip, Convert.ToInt32(Global.FM_DKH));
 4 
 5             Socket sSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 6                 sSocket.Bind(ipe);
 7                 //监听端口
 8                 sSocket.Listen(0);
 9                 //建立连接
10                 Socket serverSocket = sSocket.Accept();
11 
12                 string recStr = "";
13                 byte[] recByte = new byte[12288];
14                 int bytes = serverSocket.Receive(recByte, recByte.Length, 0);
15                 recStr += Encoding.Default.GetString(recByte, 0, bytes);