* Bjartur Thorlacius <svartma...@gmail.com> [2011-02-05 22:59:02 +0000]: > As you don't need compatibility with browsers, you should be using a > HTTP header starting with If-. See > http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html
thanks for reminding me these i discarded if- headers because they have different semantics from what i want (they may return 304 or 412 status), but it's worth checking out how much of this is supported in existing proxies..
