internet-explorer - 为什么IE不要求“If-None-Match”？

（1）第1步：首次请求后，网络服务器响应：

    HTTP/1.0 200 OK
    Date: Mon, 14 Jan 2013 02:20:51 GMT
    Server: Microsoft-IIS/6.0
    X-Powered-By: ASP.NET
    X-Powered-By: PHP/5.2.8
    Cache-Control: max-age=0
    ETag: "LV50F29509"
    Content-Type: text/html; charset=UTF-8
    X-Frame-Options: DENY
    X-Lvmi-Encoding: 16544/51562, 33%
    Vary: Accept-Encoding
    Content-Encoding: gzip
    Content-Length: 16544
    X-Cache: MISS from test.abc.com
    X-Cache-Lookup: MISS from test.abc.com:80
    Via: 1.0 test.abc.com (squid/3.0.STABLE20)
    Connection: keep-alive

（2）第2步：点击页面中的链接（链接到页面本身），IE请求：

    GET /film HTTP/1.1
    Accept: /
    Referer: http://www.test.com/film
    Accept-Language: zh-cn
    Accept-Encoding: gzip, deflate
    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; EmbeddedWB 14.52 from: http://www.bsalsa.com/ EmbeddedWB 14.52; .NET4.0C; .NET4.0E; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
    Host: www.test.com
    Connection: Keep-Alive
    Cookie: CX=1024; CY=712; ID=TEST

我的问题：为什么IE（8.0）不要求“If-None-Match”？

为什么IE不要求“If-None-Match”？

1 个答案: