On 21/01/2023 14:33, Christopher Schultz wrote:
Mark,
On 1/20/23 14:11, Mark Thomas wrote:
Hi all,
You will have seen I've just committed the updated priorities
implementation for HTTP/2. The open question is whether or not we want
to back-port this and if so, how far.
Thoughts?
Shall we let a release or two of Tomcat 11 go by to see if there are any
problems reported in the wild before back-porting?
Assuming the next release vote for 11 passes, I'd be fine with that. I'm
not sure there is much pick-up of Tomcat 11 yet. I'd probably leave a
gap between the 10.1.x to 9.0.x back-port as well.
I'm likely being over cautious since I'd be surprised if this code was
used much in the real world anyway. Priotising requests is hard in
normal circumstances and even harder in the Tomcat case where the
content is dymanically generated and the client likely has little idea
of the relative costs of genertaing the responses. In essence, all this
code does is in the case of connection window exhaustion, it uses
priorities to determine which responses to advance when the next window
update arrives.
Or is this the kind
of thing that will be much easier to back-port today than, say, in
March/April?
The HTTP/2 is pretty consistent between all versions. I'm not expecting
any major issues back-porting this in a few months time.
Mark
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