c# socket 编程.docx

/Socket基本编程/服务端：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资源。PRotected override void Dispose( bool disposing )try socket.Close();/释放资源 mythread.Abort ( ) ;/中止线程 catch if( disposing )if (components != null)components.Dispose();base.Dispose( disposing );public staticipAddress GetServerIP()IPHostEntry ieh=Dns.GetHostByName(Dns.GetHostName();return ieh.AddressList0;private void BeginListen()IPAddress ServerIp=GetServerIP();IPEndPoint iep=new IPEndPoint(ServerIp,8000);socket=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);byte byteMessage=new byte100;this.label1.Text=iep.ToString();socket.Bind(iep);/ dowhile(true)trysocket.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);/开始监听private void button1_Click(object sender, System.EventArgs e)trymythread = new Thread(new ThreadStart(BeginListen);mythread.Start();catch(System.Exception er)MessageBox.Show(er.Message,完成,MessageBoxButtons.OK,MessageBoxIcon.Stop);/客户端：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协议的发送和接收端TCP协议的接收端using System.Net.Sockets ; /使用到TcpListen类using System.Threading ; /使用到线程using System.IO ; /使用到StreamReader类int port = 8000; /定义侦听端口号private Thread thThreadRead; /创建线程，用以侦听端口号，接收信息private TcpListener tlTcpListen; /侦听端口号private bool blistener = true; /设定标示位，判断侦听状态private NetworkStream nsStream; /创建接收的基本数据流private StreamReader srRead;private System.Windows.Forms.StatusBar statusBar1;private System.Windows.Forms.Button button1;private System.Windows.Forms.ListBox listBox1; /从网络基础数据流中读取数据private TcpClient tcClient ;private void Listen ( )trytlTcpListen = new TcpListener ( port ) ; /以8000端口号来初始化TcpListener实例tlTcpListen.Start ( ) ; /开始监听statusBar1.Text = 正在监听 ;tcClient = tlTcpListen.AcceptTcpClient ( ) ; /通过TCP连接请求nsStream = tcClient.GetStream ( ) ; /获取用以发送、接收数据的网络基础数据流srRead=new StreamReader(nsStream);/以得到的网络基础数据流来初始化StreamReader实例statusBar1.Text = 已经连接！;while( blistener ) /循环侦听string sMessage = srRead.ReadLine();/从网络基础数据流中读取一行数据if ( sMessage = STOP ) /判断是否为断开TCP连接控制码tlTcpListen.Stop(); /关闭侦听nsStream.Close(); /释放资源srRead.Close();statusBar1.Text = 连接已经关闭！ ;thThreadRead.Abort(); /中止线程return;string sTime = DateTime.Now.ToShortTimeString ( ) ; /获取接收数据时的时间listBox1.Items.Add ( sTime + + sMessage ) ;catch ( System.Security.SecurityException )MessageBox.Show ( 侦听失败！ , 错误 ) ;/开始监听private void button1_Click(object sender, System.EventArgs e)thThreadRead = new Thread ( new ThreadStart ( Listen ) );thThreadRead.Start();/启动线程button1.Enabled=false;/ 清理所有正在使用的资源。protected override void Dispose( bool disposing )trytlTcpListen.Stop(); /关闭侦听nsStream.Close();srRead.Close();/释放资源thThreadRead.Abort();/中止线程catchif( disposing )if (components != null)components.Dispose();base.Dispose( disposing );TCP协议的发送端using System.Net.Sockets; /使用到TcpListen类using System.Threading; /使用到线程using System.IO; /使用到StreamWriter类using System.Net; /使用IPAddress类、IPHostEntry类等private StreamWriter swWriter; /用以向网络基础数据流传送数据private NetworkStream nsStream; /创建发送数据的网络基础数据流private TcpClient tcpClient;private System.Windows.Forms.Button button1;private System.Windows.Forms.TextBox textBox1;private System.Windows.Forms.Button button2;private System.Windows.Forms.TextBox textBox2;private System.Windows.Forms.StatusBar statusBar1;private System.Windows.Forms.Label label1;private System.Windows.Forms.Label label2; /通过它实现向远程主机提出TCP连接申请private bool tcpConnect = false; /定义标识符，用以表示TCP连接是否建立/连接private void button1_Click(object sender, System.EventArgs e)IPAddress ipRemote ;tryipRemote = IPAddress.Parse ( textBox1.Text ) ;catch /判断给定的IP地址的合法性MessageBox.Show ( 输入的IP地址不合法！ , 错误提示！ ) ;return ;IPHostEntry ipHost ;tryipHost = Dns.Resolve ( textBox1.Text ) ;catch /判断IP地址对应主机是否在线MessageBox.Show (远程主机不在线！ , 错误提示！ ) ;return ;string sHostName = ipHost.HostName ;tryTcpClient tcpClient = new TcpClient(sHostName,8000);/对远程主机的8000端口提出TCP连接申请nsStream = tcpClient.GetStream();/通过申请，并获取传送数据的网络基础数据流swWriter = new StreamWriter(nsStream);/使用获取的网络基础数据流来初始化StreamWriter实例button1.Enabled = false ;button2.Enabled = true ;tcpConnect = true ;statusBar1.Text = 已经连接！ ;catchMessageBox.Show ( 无法和远程主机8000端口建立连接！ , 错误提示！ ) ;return ;/发送private void button2_Click(object sender, System.EventArgs e)if (textBox2.Text !=)swWriter.WriteLine(textBox2.Text);/刷新当前数据流中的数据swWriter.Flush();elseMessageBox.Show(发送信息不能为空！,错误提示！