. Net socket Client instance code sharing

Client code

Copy codeThe Code is as follows:
Using System;

Using System. Collections. Generic;

Using System. Linq;

Using System. Text;

Using System. Data;

Using System. Net;

Using System. Threading;

Using System. Net. Sockets;

 

Namespace W. Common

{

Public class CacheSocket

{

Public Socket skClient;

Public string ip = string. Empty;

Public int port =-1;

Public int netID;

// Public int timeSleep = 1;

 

// Receiving and sending temporary information each time

Private byte [] sendData; // message sent

Private byte [] receiveData = new byte [1024]; // receive information

Private int receiveN;

Private bool isErr = false;

//--------

 

Public CacheSocket (int pNetID)

{

This. netID = pNetID;

GetConfig ();

Connection ();

Cmd ("netid:" + this. netID );

}

 

Public CacheSocket (int pNetID, string pIP, int pPort)

{

This. ip = pIP;

This. port = pPort;

Connection ();

Cmd ("netid:" + pNetID );

}

 

Public string Cmd (string key)

{

Lock (this) // the process of sending a message and receiving it again.

{

This. sendData = Encoding. UTF8.GetBytes (key );

 

Try

{

This. skClient. Send (this. sendData );

}

Catch (Exception ex)

{

IsErr = true;

("Send" + ex. Message). WriteLine ();

ReSocket () =>{ this. skClient. Send (this. sendData );});

}

 

Try

{

This. incluen = this. skClient. Receive (this. receiveData );

}

Catch (Exception ex)

{

IsErr = true;

ReSocket () => {this. Allowed en = this. skClient. Receive (this. receiveData );});

("Receive" + ex. Message). WriteLine ();

}

 

Return Encoding. UTF8.GetString (this. receiveData, 0, this. En en );

}

}

 

Public delegate void ReSocket_D ();

Private void ReSocket (ReSocket_D)

{

If (isErr)

{

Connection ();

 

This. sendData = Encoding. UTF8.GetBytes ("netid:" + this. netID );

This. skClient. Send (this. sendData );

 

This. incluen = this. skClient. Receive (this. receiveData );

If (Encoding. UTF8.GetString (this. receiveData, 0, this. En en )! = "1 ")

{

 

}

 

D ();

This. isErr = false;

}

}

 

# Region obtain IP addresses and ports

Private void GetConfig ()

{

This. ip = "127.0.0.1 ";

This. port = 1234;

}

# Endregion

 

# Region connection socket

Private void Connection ()

{

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

IPEndPoint ie = new IPEndPoint (IPAddress. Parse (this. ip), this. port); // the IP address and port of the server

SkClient. Connect (ie );

 

Byte [] data = new byte [7];

This. Allowed en = this. skClient. Receive (data );

 

String s = Encoding. UTF8.GetString (data, 0, this. En en );

If (s! = "Success ")

{

Throw new Exception ("connection failed" + s );

}

}

# Endregion

}

}

Usage

Copy codeThe Code is as follows:
Public static readonly CacheSocket cac = new CacheSocket (2 );

Cac. Cmd ("send content ");