asp.net Socket 实例

 public class Socketclient
     {
         TextBox txt;
         TextBox send_txt;
         public Socketclient(TextBox txt, TextBox send_txt)
         {
             this.txt = txt;
             this.send_txt = send_txt;
         }
         public void StartClient()
         {
             // Data buffer for incoming data.
             byte[] bytes = new byte[1024];

             // Connect to a remote device.
             try
             {
                 // Establish the remote endpoint for the socket.
                 // This example uses port 11000 on the local computer.
                 IPHostEntry ipHostInfo = Dns.Resolve(Dns.GetHostName());
                 IPAddress ipAddress = ipHostInfo.AddressList[0];
                 IPEndPoint remoteEP = new IPEndPoint(ipAddress, 1234);
                 // Create a TCP/IP  socket.
                 Socket sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                 // Connect the socket to the remote endpoint. Catch any errors.
                 try
                 {
                     sender.Connect(remoteEP);
                     // Console.WriteLine("Socket connected to {0}",sender.RemoteEndPoint.ToString());
                     txt.Text += "\r\n" + sender.RemoteEndPoint.ToString() + "\r\n";
                     // Encode the data string into a byte array.
                     byte[] msg = Encoding.ASCII.GetBytes(send_txt.Text + "<EOF>");
                     // Send the data through the socket.
                     int bytesSent = sender.Send(msg);
                     // Receive the response from the remote device.
                     int bytesRec = sender.Receive(bytes);
                     //Console.WriteLine("Echoed test = {0}",Encoding.ASCII.GetString(bytes,0,bytesRec));
                     txt.Text += "\r\n" + Encoding.ASCII.GetString(bytes, 0, bytesRec) + "\r\n";//接收远程服务器信息

                     // Release the socket.
                     sender.Shutdown(SocketShutdown.Both);
                     sender.Close();
                 }
                 catch (ArgumentNullException ane)
                 {
                     // Console.WriteLine("ArgumentNullException : {0}",ane.ToString());
                     txt.Text += "\r\n" + ane.ToString() + "\r\n";
                 }
                 catch (SocketException se)
                 {
                     // Console.WriteLine("SocketException : {0}",se.ToString());
                     txt.Text += "\r\n" + se.ToString() + "\r\n";
                 }
                 catch (Exception e)
                 {
                     // Console.WriteLine("Unexpected exception : {0}", e.ToString());
                     txt.Text += "\r\n" + e.ToString() + "\r\n";
                 }
             }
             catch (Exception e)
             {
                 // Console.WriteLine( e.ToString());
                 txt.Text += "\r\n" + e.ToString() + "\r\n";
             }
         }
     }
  public class SocketServer {

      int port;  //端口
      string host;//ip地址
      TextBox txt;
      /// <summary>
      /// 构造涵数
      /// </summary>
      /// <param name="ports">端口号</param>
      public SocketServer(int ports, string host,TextBox txt)
      {
        this.port=ports;
        this.host = host;
        this.txt = txt;
      }
      //开始监听
     public void beginListen(){
         try
         {
             IPAddress ip = IPAddress.Parse(host);//把ip地址字符串转换为IPAddress类型的实例
             IPEndPoint ipe = new IPEndPoint(ip, port);//用指定的端口和ip初始化IPEndPoint类的新实例
             ///创建socket并开始监听
             Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个socket对像，如果用udp协议，则要用SocketType.Dgram类型的套接字
             s.Bind(ipe);//绑定EndPoint对像（端口和ip地址）
             s.Listen(0);//开始监听
             txt.Text += "等待客户端连接";
            // Console.WriteLine("等待客户端连接");
             //定义循环，以便可以简历多次连接
             while (true)
             {
                 Socket temp = s.Accept();//为新建连接创建新的socket
                 while (true)
                 {
                     string recvStr = "";
                     byte[] recvBytes = new byte[1024];
                     int bytes;
                     bytes = temp.Receive(recvBytes, recvBytes.Length, 0);//从客户端接受信息
                     recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);
                     txt.Text += "\r\n" + recvStr + "\r\n";
                     if (recvStr.IndexOf("<EOF>") > -1)
                     {
                         break;
                     }
                 }
                 //给client端返回信息
                // Console.WriteLine("server get message:{0}", recvStr);//把客户端传来的信息显示出来

                 string sendStr = "jpeg upload OK";
                 byte[] bs = Encoding.ASCII.GetBytes(sendStr);
                 temp.Send(bs, bs.Length, 0);//返回信息给客户端
                 temp.Shutdown(SocketShutdown.Both);
                 temp.Close();

             }
         }
         catch (Exception ex)
         {
             string str = ex.ToString();
             txt.Text += "\r\n" + str + "\r\n";
         }
     }
 }}

 

客户端按钮事件

 protected void Button1_Click(object sender, EventArgs e)
      {
              Socketclient client = new Socketclient(TextBox2, TextBox3);
              client.StartClient();

      }

//服务端监听执行线程

 protected void Page_Load(object sender, EventArgs e)
         {
             if (!IsPostBack)
             {
                 SocketServer socket = new SocketServer(1234, "192.168.88.196", TextBox1);
                 //启动线程
                 Thread thread = new Thread(new ThreadStart(socket.beginListen));
                 thread.Start();
                 // 在应用程序启动时运行的代码
                 //(new System.Threading.Thread(new System.Threading.ThreadStart(new Class1().CreatSocket))).Start();//开辟一个新线程
             }
         }

aspx

 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="JpegForSocketServer.aspx.cs" Inherits="WebForAndroid.JpegForSocketServer" %>

 <!DOCTYPE html>

 <html xmlns="http://www.w3.org/1999/xhtml">
 <head runat="server">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title></title>
 </head>
 <body>
     <form id="form1" runat="server">
     <div>
         <asp:TextBox ID="TextBox1" runat="server" Height="206px" TextMode="MultiLine" Width="700px" ></asp:TextBox>
     </div>
         <hr />
         <asp:TextBox ID="TextBox2" runat="server" Height="197px" TextMode="MultiLine" Width="376px"></asp:TextBox>
         <asp:TextBox ID="TextBox3" runat="server" Height="119px" TextMode="MultiLine"></asp:TextBox>
         <asp:Button ID="Button1" runat="server" Height="52px" OnClick="Button1_Click" Text="SEND" Width="138px" />
     </form>
 </body>
 </html>

图：