CODEWITHSUNDEEP
internet-exploreretag
kevin.wang
kevin.wang

Reputation: 11

why IE DO NOT request with "If-None-Match"？

(1)step 1: after first request, web server response:

    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)step 2: click the link in the page(link to the page itself), IE request with:

    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

my question: why IE(8.0) DO NOT request with "If-None-Match"？

Upvotes: 1

Views: 907

Answers (1)

Matthias Diester
Matthias Diester

Reputation: 381

It is a rather old question, but I thought it might be interesting to point to the following URL: w3 - HTTP Etags and Friends

Your referenced strong etag seems to be a HTTP/1.1 feature. The question could be whether IE is considering this due to the HTTP/1.0 response?! Have you resolved your issue in the meantime?

Upvotes: 0

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