如果续行以空格或水平制表符开头,则 HTTP/1.1 标头字段值可以折叠到多行。所有线性空白,包括折叠,都具有与 SP 相同的语义。接收者可以在解释字段值或向下游转发消息之前用单个 SP 替换任何线性空格。(引用自此处)
这是我的服务器端脚本,它只是转储 cookie 内容:
var_dump($_COOKIE);exit;
我的测试来了,请注意cookie部分:
GET /logtest.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.17) Gecko/20110420 AlexaToolbar/alxf-2.11 Firefox/3.6.17
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Cookie: A=t;
artDate=t
Cache-Control: max-age=0
HTTP/1.1 200 OK
Server: iis/8.0
Date: Mon, 23 May 2011 12:38:00 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=20
X-Powered-By: PHP/5.3.2
Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/
27
array(1) {
["A"]=>
string(1) "t"
}
0
GET /logtest.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.17) Gecko/20110420 AlexaToolbar/alxf-2.11 Firefox/3.6.17
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Cookie: A=t;
artDate=t
Cache-Control: max-age=0
HTTP/1.1 200 OK
Server: iis/8.0
Date: Mon, 23 May 2011 12:38:11 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=20
X-Powered-By: PHP/5.3.2
Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/
27
array(1) {
["A"]=>
string(1) "t"
}
0
GET /logtest.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.17) Gecko/20110420 AlexaToolbar/alxf-2.11 Firefox/3.6.17
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Cookie: A=t;artDate=t
Cache-Control: max-age=0
HTTP/1.1 200 OK
Server: iis/8.0
Date: Mon, 23 May 2011 12:38:55 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=20
X-Powered-By: PHP/5.3.2
Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/
47
array(2) {
["A"]=>
string(1) "t"
["artDate"]=>
string(1) "t"
}
0