C # implement Socket communication

 

1. Open VS to create two console applications: leleapplication_socketserver and ConsoleApplication_socketClient.

 

2. Enter the following code in leleapplication_socketclient:

 

Using System;

Using System. Collections. Generic;

Using System. Linq;

Using System. Text;

Using System. Net;

Using System. Net. Sockets;

 

Namespace ConsoleApplication_socketClient

{

Class Program

{

Static Socket clientSocket;

Static void Main (string [] args)

{

// Indicates the network endpoint as an IP address and port used for socket listening.

IPEndPoint ipep = new IPEndPoint (IPAddress. parse ("*. *. *. * "), 3001); // enter the IP address of your computer or the IP address of another computer. If it is an IP address of another computer, place the leleapplication_socketserver project on the corresponding computer.

ClientSocket = new Socket (ipep. AddressFamily, SocketType. Stream, ProtocolType. Tcp );

// Connect the Socket to the server

Try

{

ClientSocket. Connect (ipep );

String outBufferStr;

Byte [] outBuffer = new Byte [1024];

Byte [] inBuffer = new Byte [1024];

While (true)

{

// Send a message

OutBufferStr = Console. ReadLine ();

OutBuffer = Encoding. ASCII. GetBytes (outBufferStr );

ClientSocket. Send (outBuffer, outBuffer. Length, SocketFlags. None );

// Receive Server Information

ClientSocket. Receive (inBuffer, 1024, SocketFlags. None); // If the received message is empty, the current loop is blocked.

Console. WriteLine ("the server says :");

Console. WriteLine (Encoding. ASCII. GetString (inBuffer ));

}

}

Catch

{

Console. WriteLine ("the service is not enabled! ");

Console. ReadLine ();

}

}

}

}

3. Enter the following code in leleapplication_socketserver:

 

 

Using System;

Using System. Collections. Generic;

Using System. Linq;

Using System. Text;

Using System. IO;

Using System. Net;

Using System. Net. Sockets;

Using System. Threading;

 

Namespace ConsoleApplication_socketServer

{

Class Program

{

Static Socket serverSocket;

Static Socket clientSocket;

Static Thread thread;

Static void Main (string [] args)

{

IPEndPoint ipep = new IPEndPoint (ipaddresses. Any, 3001 );

ServerSocket = new Socket (ipep. AddressFamily, SocketType. Stream, ProtocolType. Tcp );

ServerSocket. Bind (ipep );

ServerSocket. Listen (10 );

While (true)

{

ClientSocket = serverSocket. Accept ();

Thread = new Thread (new ThreadStart (doWork ));

Thread. Start ();

}

}

Private static void doWork ()

{

Socket s = clientSocket; // client information

IPEndPoint ipEndPoint = (IPEndPoint) s. RemoteEndPoint;

String address = ipEndPoint. Address. ToString ();

String port = ipEndPoint. Port. ToString ();

Console. WriteLine (address + ":" + port + "connected ");

Byte [] inBuffer = new Byte [1024];

Byte [] outBuffer = new Byte [1024];

String inBufferStr;

String outBufferStr;

Try

{

While (true)

{

S. Receive (inBuffer, 1024, SocketFlags. None); // If the received message is empty, the current loop is blocked.

InBufferStr = Encoding. ASCII. GetString (inBuffer );

Console. WriteLine (address + ":" + port + "said :");

Console. WriteLine (inBufferStr );

OutBufferStr = Console. ReadLine ();

OutBuffer = Encoding. ASCII. GetBytes (outBufferStr );

S. Send (outBuffer, outBuffer. Length, SocketFlags. None );

}

}

Catch

{

Console. WriteLine ("the client is closed! ");

}

}

}

}

 

4. Run leleapplication_socketserver first, and then run leleapplication_socketclient to communicate.

 

5. Time is limited. I hope all of the above Code will be optimized, because there are some shortcomings, such as the order of speeches and so on.

 

Author liyongquanlongliang