http中的request和session的关系。
一个session包括几个request.分析如下
GET /ajaxproxy.htm HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, */*
Referer: http://www.renren.com/
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; aff-kingsoft-ciba; staticlogin:product=cboxf09&act=login&info=ZmlsZW5hbWU9UG93ZXJ3b3JkMjAwOU94Zi4yNTI2OS40MDExLmV4ZSZtYWM9Q0YwMDJFQjMzQTZCNDRFRUE1Nzg2RjBBNDVDRUJEOUQmcGFzc3BvcnQ9JnZlcnNpb249MjAwOS4wNS4yNS4zLjI3MiZjcmFzaHR5cGU9MQ==&verify=c26a539731dee1d43c13e0f44cbdf296)
Host: reg.renren.com
Connection: Keep-Alive
Cookie: _r01_=1
HTTP/1.1 200 OK
Server: nginx/0.8.44
Date: Thu, 09 Dec 2010 15:29:16 GMT
Content-Type: text/html
Connection: keep-alive
ETag: "4wDltoXKzxt"
Last-Modified: Mon, 06 Dec 2010 13:02:30 GMT
Accept-Ranges: bytes
Content-Length: 550
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script>
try{document.domain = window.location.hostname.split('.').reverse().slice(0,2).reverse().join('.');}catch(e){}
getTransport = function( )
{
try
{
try
{
return new ActveXObject( 'Msxml2.XMLHTTP' );
}
catch( e )
{
return new ActiveXObject( 'Microsoft.XMLHTTP' );
}
}
catch( e )
{
return new XMLHttpRequest();
}
};
</script>
</head>
<body></body>
</html>
以上是一个request.
POST /xn6207.do HTTP/1.1
Accept: */*
Accept-Language: zh-cn
Referer: http://reg.renren.com/ajaxproxy.htm
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; aff-kingsoft-ciba; staticlogin:product=cboxf09&act=login&info=ZmlsZW5hbWU9UG93ZXJ3b3JkMjAwOU94Zi4yNTI2OS40MDExLmV4ZSZtYWM9Q0YwMDJFQjMzQTZCNDRFRUE1Nzg2RjBBNDVDRUJEOUQmcGFzc3BvcnQ9JnZlcnNpb249MjAwOS4wNS4yNS4zLjI3MiZjcmFzaHR5cGU9MQ==&verify=c26a539731dee1d43c13e0f44cbdf296)
Host: reg.renren.com
Content-Length: 29
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: _r01_=1; ick=0d09d9d8-0ffa-4aab-ba71-75dd4aad9774
ss=10112&rndval=1291908552919
HTTP/1.1 200 OK
Server: nginx/0.8.44
Date: Thu, 09 Dec 2010 15:29:16 GMT
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: no-cache
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Encoding: gzip
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以上又是一个request.
所以这里一个session 包含两个request.