1、 创建socket

Socket sender = new Socket(AddressFamily.InterNetwork,
                                   SocketType.Stream,
                                   ProtocolType.Tcp);

2、建立链接

 IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
 IPEndPoint remoteEP = new IPEndPoint(ipAddress, 33002);
 sender.Connect(remoteEP);

3、准备要发送的数据

string json = File.ReadAllText(@"E:\zx\a.txt");

byte[] jsonBytes = Encoding.UTF8.GetBytes(json);

4、 发送数据

int bytesSent = sender123.Send(jsonBytes);

5、关闭连接

sender.Shutdown(SocketShutdown.Both);
sender.Close();