Socket基本編程

服務端：

using System.Net;

using System.Net.Sockets;

using System.Text;

using System.Threading;




Thread mythread ;

Socket socket;


// 清理所有正在使用的資源。

protected override void Dispose( bool disposing )

{

try

　 { 　　

　　 socket.Close();//釋放資源

　　 mythread.Abort ( ) ;//中止線程

　 }

　 catch{ }



if( disposing )

{

if (components != null)

{

components.Dispose();

}

}

base.Dispose( disposing );

}

public static IPAddress GetServerIP()

{

IPHostEntry ieh=Dns.GetHostByName(Dns.GetHostName());

return ieh.AddressList[0];

}

private void BeginListen()

{

IPAddress ServerIp=GetServerIP();

IPEndPoint iep=new IPEndPoint(ServerIp,8000);

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



byte[] byteMessage=new byte[100];

this.label1.Text=iep.ToString();

socket.Bind(iep);

// do

while(true)

{

try

{

socket.Listen(5);

Socket newSocket=socket.Accept();

newSocket.Receive(byteMessage);



string sTime = DateTime.Now.ToShortTimeString ( ) ;

string msg=sTime+":"+"Message from:";

msg+=newSocket.RemoteEndPoint.ToString()+Encoding.Default.GetString(byteMessage);

this.listBox1.Items.Add(msg);



}

catch(SocketException ex)

{

this.label1.Text+=ex.ToString();

}

}

// while(byteMessage!=null);

}

//開始監聽

private void button1_Click(object sender, System.EventArgs e)

{

try

{

mythread = new Thread(new ThreadStart(BeginListen));

mythread.Start();



}

catch(System.Exception er)

{

MessageBox.Show(er.Message,"完成",MessageBoxButtons.OK,MessageBoxIcon.Stop);

}

}





客戶端：



using System.Net;

using System.Net.Sockets;

using System.Text;



private void button1_Click(object sender, System.EventArgs e)

{

BeginSend();

}

private void BeginSend()

{

string ip=this.txtip.Text;

string port=this.txtport.Text;



IPAddress serverIp=IPAddress.Parse(ip);

int serverPort=Convert.ToInt32(port);

IPEndPoint iep=new IPEndPoint(serverIp,serverPort);

byte[] byteMessage;

// do

// {

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

socket.Connect(iep);



byteMessage=Encoding.ASCII.GetBytes(textBox1.Text);

socket.Send(byteMessage);

socket.Shutdown(SocketShutdown.Both);

socket.Close();

// }

// while(byteMessage!=null);

}



基于TCP協議的發送和接收端



TCP協議的接收端



using System.Net.Sockets ; //使用到TcpListen類

using System.Threading ; //使用到線程

using System.IO ; //使用到StreamReader類



int port = 8000; //定義偵聽端口號

private Thread thThreadRead; //創建線程，用以偵聽端口號，接收信息

private TcpListener tlTcpListen; //偵聽端口號

private bool blistener = true; //設定標示位，判斷偵聽狀態

private NetworkStream nsStream; //創建接收的基本數據流

private StreamReader srRead;

private System.Windows.Forms.StatusBar statusBar1;

private System.Windows.Forms.Button button1;

private System.Windows.Forms.ListBox listBox1; //從網絡基礎數據流中讀取數據

private TcpClient tcClient ;



private void Listen ( )

{

try

{

tlTcpListen = new TcpListener ( port ) ; //以8000端口號來初始化TcpListener實例

tlTcpListen.Start ( ) ; //開始監聽

statusBar1.Text = "正在監聽..." ;

tcClient = tlTcpListen.AcceptTcpClient ( ) ; //通過TCP連接請求

nsStream = tcClient.GetStream ( ) ; //獲取用以發送、接收數據的網絡基礎數據流

srRead=new StreamReader(nsStream);//以得到的網絡基礎數據流來初始化StreamReader實例

statusBar1.Text = "已經連接！";

轉載于:https://www.cnblogs.com/lovenets/articles/422076.html

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