http协议中的头信息和正文是采用空行分开，什么是空行呢？简单来说，就是\r\n\r\n。
所以将服务器返回的数据用\r\n\r\n分开后的结果，一个是头信息，一个是正文信息。
C#的代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using System.IO;
namespace SOCKET
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
int port = 80;
GetSocket gs = new GetSocket();
string result = gs.SocketSendReceive("www.baidu.com", port);
Regex regex = new Regex("\r\n\r\n");//以cjlovefl分割
string[] bit = regex.Split(result);
MessageBox.Show(bit[1]);
StreamWriter sw = new StreamWriter("D:\\1.txt");
sw.Write(result);
sw.Close();
}
}
}
其中result就是由服务器返回的包括头部和正文的信息。
其中GetSocket类如下：
using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Windows.Forms;
using System.Text.RegularExpressions;
public class GetSocket
{
public Socket ConnectSocket(string server, int port)
{
Socket s = null;
IPHostEntry hostEntry = null;
// Get host related information.
hostEntry = Dns.GetHostEntry(server);
// Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
// an exception that occurs when the host IP Address is not compatible with the address family
// (typical in the IPv6 case).
foreach (IPAddress address in hostEntry.AddressList)
{
IPEndPoint ipe = new IPEndPoint(address, port);
Socket tempSocket =
new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
tempSocket.Connect(ipe);
if (tempSocket.Connected)
{
s = tempSocket;
break;
}
else
{
continue;
}
}
return s;
}
// This method requests the home page content for the specified server.
public string SocketSendReceive(string server, int port)
{
string request = "GET / HTTP/1.0\r\nHost: " + server +
"\r\nUser-Agent: Mozilla/5.0 (Windows NT 6.1; rv:29.0) Gecko/20100101 Firefox/29.0\r\nConnection: keep-alive\r\n\r\n";
Byte[] bytesSent = Encoding.ASCII.GetBytes(request);
Byte[] bytesReceived = new Byte[256];
// Create a socket connection with the specified server and port.
Socket s = ConnectSocket(server, port);
if (s == null)
return ("Connection failed");
// Send request to the server.
s.Send(bytesSent, bytesSent.Length, 0);
// Receive the server home page content.
int bytes = 0;
string page = "Default HTML page on " + server + ":\r\n";
// The following will block until te page is transmitted.
do
{
bytes = s.Receive(bytesReceived, bytesReceived.Length, 0);
page =page+ Encoding.ASCII.GetString(bytesReceived, 0, bytes);
}
while (bytes > 0);
return page;
}
/*
public static void Main(string[] args)
{
string host = "http://www.baidu.com";
int port = 80;
if (args.Length == 0)
// If no server name is passed as argument to this program,
// use the current host name as the default.
host = Dns.GetHostName();
else
host = args[0];
string result = SocketSendReceive("www.goodjobs.cn", port);
StreamWriter sw = new StreamWriter("D:\\1.txt");
string w = "";
sw.Write(result);
sw.Close();
}
* */
}
测试成功！
原文地址：http://blog.csdn.net/itbuluoge/article/details/26264017
