Hi Phil, Thanks for sending through the examples. I must have been setting the header incorrectly - missing the quotes or something. It does indeed work for favorites too, whether authenticated or not..
Tim. On Wed, Feb 24, 2010 at 2:15 PM, philoye <phil...@gmail.com> wrote: > On Feb 22, 1:31 pm, Tim Haines <tmhai...@gmail.com> wrote: > > The Twitter API returns ETags, that seem to change when the content > > changes and otherwise not. It doesn't seem to return 304's when the > > same ETag is sent back to it though. > > > > Has anyone seen it send 304s? > > The API always seem to return no-cache and past expiry headers, it > *does* send 304's when you pass the etag in a "If-None-Match" header: > > $ curl --head http://twitter.com/users/show.xml?screen_name=philoye > HTTP/1.1 200 OK > Date: Wed, 24 Feb 2010 01:13:10 GMT > Server: hi > X-RateLimit-Limit: 150 > X-Transaction: 1266973990-97869-341 > Status: 200 OK > ETag: "3022db84cebe898b561a397c20063f5e" > Last-Modified: Wed, 24 Feb 2010 01:13:10 GMT > X-RateLimit-Remaining: 136 > X-Runtime: 0.02109 > Content-Type: application/xml; charset=utf-8 > Pragma: no-cache > Content-Length: 2057 > X-RateLimit-Class: api > Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post- > check=0 > Expires: Tue, 31 Mar 1981 05:00:00 GMT > X-Revision: DEV > X-RateLimit-Reset: 1266976693 > Set-Cookie: > _twitter_sess=BAh7CDoRdHJhbnNfcHJvbXB0MDoHaWQiJTA0MWYzMTQyNGZjMjU5MTJlYWQz > %250AOWU1MzhhMmYxZTkzIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVyOjpGbGFz > %250AaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA-- > ba31f1ea9e0800e1b4c3d564484c8fdf6885183d; domain=.twitter.com; path=/ > Vary: Accept-Encoding > Connection: close > > $ curl --head --header 'If-None-Match: > "3022db84cebe898b561a397c20063f5e"' > http://twitter.com/users/show.xml?screen_name=philoye > HTTP/1.1 304 Not Modified > Date: Wed, 24 Feb 2010 01:13:41 GMT > Server: hi > Connection: close > ETag: "3022db84cebe898b561a397c20063f5e" > Expires: Tue, 31 Mar 1981 05:00:00 GMT > Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post- > check=0 > Vary: Accept-Encoding > Set-Cookie: > _twitter_sess=BAh7CDoHaWQiJTRiYTlkN2RlODVhN2NlNmMzMWM3MWY4Y2FhNGUwZjc4Igpm > %250AbGFzaElDOidBY3Rpb25Db250cm9sbGVyOjpGbGFzaDo6Rmxhc2hIYXNoewAG > %250AOgpAdXNlZHsAOhF0cmFuc19wcm9tcHQw-- > fce6e5410dc71d9720ac35c5470bc7220e8b4ceb; domain=.twitter.com; path=/ > > > The key is to send the ETag in a If-None-Match header, not an ETag > header. I still don't understand why the Cache-Control and Expires > headers are set this way though. > > Cheers, > p. >
