A simple Socket Client sends messages to the server program

ServerCode:

 

Using system;

Using system. text;

Using system. Windows. forms;

Using system. net;

Using system. net. Sockets;

Using system. Threading;

Namespace tcpreceive

{

/// <Summary>

/// Server

/// </Summary>

Public partial class frmreceive: Form

{

Tcplistener listener = new tcplistener (New ipendpoint (IPaddress. Any, 2222); // port 2222

Public frmreceive ()

{

Initializecomponent ();

Listener. Start (); // start listening port

Thread acceptthread = new thread (New threadstart (acceptworkthread ));

Acceptthread. Start (); // receives client requests

}

 

/// <Summary>

/// Receive and decode

/// </Summary>

Private void acceptworkthread ()

{

Socket socket = listener. acceptsocket ();

Byte [] buffer = new byte [1024];

While (true)

{

Int receivecount = socket. Receive (buffer );

If (receivecount> 0)

{

String recstring = encoding. utf8.getstring (buffer, 0, receivecount); // decoded

Showmsg (recstring );

}

Else

{

Socket. Close ();

Break;

}

}

}

 

/// <Summary>

/// Display the received message content

/// </Summary>

/// <Param name = "text"> </param>

Public void showmsg (string text)

{

Rboxrecevie. Text = text;

}

}

}

 

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Client code:

Using system;

 

Using system. text;

Using system. Windows. forms;

Using system. net;

Using system. net. Sockets;

Namespace tcpsend

{

/// <Summary>

/// Client

/// </Summary>

Public partial class frmsend: Form

{

Socket socket = new socket (addressfamily. InterNetwork, sockettype. Stream, protocoltype. TCP );

Public frmsend ()

{

Initializecomponent ();

}

 

/// <Summary>

/// Connect to the server

/// </Summary>

/// <Param name = "sender"> </param>

/// <Param name = "E"> </param>

Private void btnconn_click (Object sender, eventargs E)

{

IPaddress serverip = IPaddress. parse ("192.168.1.102 ");

Ipendpoint IEP = new ipendpoint (serverip, 2222 );

Socket. Connect (IEP); // connect to the server

}

 

/// <Summary>

/// Send a message

/// </Summary>

/// <Param name = "sender"> </param>

/// <Param name = "E"> </param>

Private void btnsend_click (Object sender, eventargs E)

{

If (socket. Connected)

Beginsend ();

Else

MessageBox. Show ("connect to the server first! "," Prompt ");

}

 

Private void beginsend ()

{

Byte [] bytemessage;

Bytemessage = encoding. utf8.getbytes (rboxcontent. Text );

Socket. Send (bytemessage );

}

 

/// <Summary>

/// Release the socket when the window is closed

/// </Summary>

/// <Param name = "sender"> </param>

/// <Param name = "E"> </param>

Private void frmsend_formclosing (Object sender, formclosingeventargs E)

{

If (socket. Connected)

Socket. Shutdown (socketshutdown. Both );

Socket. Close ();

}

}

}

 

 

Source program download