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Safari is now sending If-None-Match: headers
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Safari is now sending If-None-Match: headers


  • Subject: Safari is now sending If-None-Match: headers
  • From: Jens Alfke <email@hidden>
  • Date: Mon, 5 Jan 2009 12:30:33 -0800

A few months ago I asked here about the lack of support for If-None- Match: headers in HTTP requests sent by Safari; this makes it difficult for sites to use ETags for client-side caching because the conditional GET sent by Safari doesn't contain the cached ETag to compare against.

Then, just the other day I noticed that my copy of Safari is now sending If-None-Match: headers to our server! Hooray! This must be due to upgrading to either Safari 3.2.1 or OS X 10.5.6. Could someone please clarify what specific versions are needed to get the improved caching behavior? This is definitely of interest to our QA team, who are trying to validate our site's caching with various browsers. Thanks.

—Jens

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