On 02.03.2010 19:11, Maciej Stachowiak wrote:
On Mar 2, 2010, at 4:07 AM, Julian Reschke wrote:
On 02.03.2010 12:53, Maciej Stachowiak wrote:
Using If-None-Match this way seems like a bad fit in a couple of ways:
- Event IDs are not ETags at the HTTP level. It seems like a layering
violation to treat event IDs, or indeed anything in the response body
rather than in the ETag header, as entity tags.
Event IDs *could* be used as ETags, in which case there wouldn't be a
layering violation.
How? The ETag is sent before the first event, as part of the HTTP
headers. The server can't know the last event it will send, if the event
stream is dynamically generated.
...
Actually, it could (using Trailers), but I wasn't going to suggest
something radical like that :-).
So yes, you are right, equating the ETag with the Event-ID doesn't work.
Best regards, Julian
