http协议报头信息和主体鉴别
http协议报头信息和主体是使用一个空行分开。这是什么空行?简单的说,那是,\r\n\r\n。
所以会server数据的回归\r\n\r\n结果分离,一个是标题信息。它是一个消息的文本。
C#例如,下面的代码:
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切割 string[] bit = regex.Split(result); MessageBox.Show(bit[1]); StreamWriter sw = new StreamWriter("D:\\1.txt"); sw.Write(result); sw.Close(); } } }
当中result就是由server返回的包含头部和正文的信息。
当中GetSocket类例如以下:
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!
版权声明:本文博主原创文章,博客,未经同意不得转载。