asp.net Socket 实例

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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

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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

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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

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<%@ 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>

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