一个http协议和iis的疑问，跟微软中国站点有关

[Laone]

用java写了一个socket小程序，就是用socket发送http请求，然后获取返回数据
在请求别的网站的时候，都可以返回正确的页面，可是我请求微软的主网站的地址的时候，返回给我的却是400错误，请看具体数据：
http请求http://www.microsoft.com/china/homepage/ms.htm发送的数据包：
GET /china/homepage/ms.htm HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/msword, application/vnd.ms-powerpoint, application/x-gsarcade-launch, */*
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Host: www.microsoft.com:80
Connection: Keep-Alive


服务器返回给我的数据：
HTTP/1.1 400 Bad Request
Content-Type: text/html
Date: Sat, 01 May 2004 14:18:04 GMT
Connection: close
Content-Length: 20

<h1>Bad Request</h1>

这是怎么回事呢？它用了什么技术辨别是IE请求还是自己用socket请求？

[cnzzq]

不允许GET的话你怎么可能在IE中打开呢。
你的GET string有问题啦。
搞HTTP协议可以用抓包软件抓IE的包回来COPY就OK

[cnzzq]

Connection: Keep-Alive IS POST CONNECTION
it should be close

[Laone]

去掉Connection: Keep-Alive也是一样的，java源码如下：
import java.io.*;
import java.net.*;

public class Client{
Socket socket;
BufferedReader in;
PrintWriter out;

public Client(String IPAddr, String httpURL, int Port){
try{
socket = new Socket(IPAddr, Port);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(),true);
String httpRequest = "GET " + httpURL + " HTTP/1.1\nAccept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/msword, application/vnd.ms-powerpoint, application/x-gsarcade-launch, */*\nAccept-Language: zh-cn\nAccept-Encoding: gzip, deflate\nUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)\nHost: " + IPAddr + ":" + Port + "\n\n";
System.out.println(httpRequest);
out.println(httpRequest);
String result = in.readLine();
while(result!=null){
System.out.println(result);
result = in.readLine();
}
out.close();
in.close();
socket.close();
}
catch (IOException e){
System.out.println("ERRO:"+e.getMessage());
}
}

public static void main(String[] args)
{
if (args.length<3){
System.out.println("useage: java Client hostname url port\n");
}else{
new Client(args[0], args[1], Integer.parseInt(args[2]));
}
}
}