C#中Socket通信用法實例詳解

原文鏈接：https://www.jb51.net/article/72313.htm

本文實例講述了C#中Socket通信用法。分享給大家供大家參考。具體如下：

一、UDP方式：

服務器端代碼:

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static void Main(string[] args) {   int recv;   byte[] data = new byte[1024];   IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);//定義一網絡端點   Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//定義一個Socket   newsock.Bind(ipep);//Socket與本地的一個終結點相關聯   Console.WriteLine("Waiting for a client..");   IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);//定義要發送的計算機的地址   EndPoint Remote = (EndPoint)(sender);//   recv = newsock.ReceiveFrom(data, ref Remote);//接受數據        Console.WriteLine("Message received from{0}:", Remote.ToString());   Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));   string welcome = "Welcome to my test server!";   data = Encoding.ASCII.GetBytes(welcome);   newsock.SendTo(data, data.Length, SocketFlags.None, Remote);   while (true)   {     data = new byte[1024];     recv = newsock.ReceiveFrom(data, ref Remote);     Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));     newsock.SendTo(data, recv, SocketFlags.None, Remote);   } }

客戶端代碼:

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void MainInfo() {   byte[] data = new byte[1024];//定義一個數組用來做數據的緩衝區   string input, stringData;   IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("192.168.1.21"), 9050);   Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);   string welcome = "Hello,are you there?";   data = Encoding.ASCII.GetBytes(welcome);   server.SendTo(data, data.Length, SocketFlags.None, ipep);//將數據發送到指定的終結點   IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);   EndPoint Remote = (EndPoint)sender;   data = new byte[1024];   int recv = server.ReceiveFrom(data, ref Remote);//接受來自服務器的數據   Console.WriteLine("Message received from{0}:", Remote.ToString());   Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));   while (true)//讀取數據   {     input = richTextBox1.Text;//從鍵盤讀取數據     if (input == "text")//結束標記     {       break;     }     server.SendTo(Encoding.ASCII.GetBytes(input), Remote);//將數據發送到指定的終結點Remote     data = new byte[1024];     recv = server.ReceiveFrom(data, ref Remote);//從Remote接受數據     stringData = Encoding.ASCII.GetString(data, 0, recv);     Console.WriteLine(stringData);   }   Console.WriteLine("Stopping client");   server.Close(); }

二、TCP方式:

服務器端代碼:

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Socket serverSocket = null; Thread clientThread = null; Socket clientSocket = null; Thread thread = null; IPAddress ips = null; PEndPoint ipep = null; void ServerStart() {   ips = Dns.GetHostAddresses(Dns.GetHostName())[0];   //創建IPEndPoint實例    ipep = new IPEndPoint(ips, 9050);   //創建一個套接字    serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);   serverSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);   //將所創建的套接字與IPEndPoint綁定    serverSocket.Bind(ipep);   //設置套接字爲收聽模式    serverSocket.Listen(20);   while (listenalive)   {     try     {       //在套接字上接收接入的連接        clientSocket = serverSocket.Accept();       clientThread = new Thread(new ParameterizedThreadStart(ReceiveData));       clientThread.Start(clientSocket);     }     catch (Exception ex)     {       WriteErrorLog(ex.Message);       serverSocket.Close();       serverSocket = null;     }   } } static void ReceiveData(object obj) {   bool keepalive = true;   Socket s = obj as Socket;   Byte[] buffer = new Byte[1024];   //根據收聽到的客戶端套接字向客戶端發送信息    IPEndPoint clientep = (IPEndPoint)s.RemoteEndPoint;   Console.WriteLine("客戶端ip:" + clientep.Address + " 端口:" + clientep.Port);   string welcome = "連接服務器成功";   buffer = System.Text.Encoding.Unicode.GetBytes(welcome);   //向客戶端發送“連接服務器成功”消息   s.Send(buffer, buffer.Length, SocketFlags.None);   buffer = new Byte[1024];   int bufLen = 0;   string content = string.Empty;   while (true)   {     //在套接字上接收客戶端發送的信息      bufLen = 0;     try     {       bufLen = s.Receive(buffer);       if (bufLen == 0)       {         break;       }       content += System.Text.Encoding.Unicode.GetString(buffer, 0, bufLen);     }     catch (Exception ex)     {       break; ;     }   }   Send(s, content);   s = null;   buffer = null;   clientep = null;   Thread.CurrentThread.Abort(); }

客戶端代碼:

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void Send(string content) {   byte[] data = new byte[1024];   newclient = new System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp);   ie = new System.Net.IPEndPoint(System.Net.IPAddress.Parse(ipadd), port);//服務器的IP和端口   try   {     //因爲客戶端只是用來向特定的服務器發送信息，所以不需要綁定本機的IP和端口。不需要監聽。     newclient.Connect(ie);   }   catch (System.Net.Sockets.SocketException e)   {     Console.WriteLine(e.ToString());     return;   }   int recv = newclient.Receive(data);   //連接服務器成功   string stringdata = System.Text.Encoding.Unicode.GetString(data, 0, recv);   if (stringdata == "連接服務器成功")   {     newclient.Send(System.Text.Encoding.Unicode.GetBytes(content));     newclient.Shutdown(System.Net.Sockets.SocketShutdown.Send);     data = new byte[1024];     recv = newclient.Receive(data);     string result = System.Text.Encoding.Unicode.GetString(data, 0, recv);         newclient.Shutdown(System.Net.Sockets.SocketShutdown.Receive);     newclient.Close();     MessageBox.Show(result);   }   else   {     MessageBox.Show("連接服務器失敗", "友情提示");   } }

希望本文所述對大家的C#程序設計有所幫助。