https://issues.apache.org/bugzilla/show_bug.cgi?id=55546

--- Comment #5 from Mark Thomas <ma...@apache.org> ---
(In reply to Archie Cobbs from comment #4)

> Unless I'm misunderstanding something, it appears that Tomcat already
> supports HTTP upgrade.. because it is responding with "101 Switching
> Protocols" and "Connection: upgrade".

I know Tomcat supports HTTP upgrade. I wrote the implementation.

> So maybe this is just an Apache limitation.

No, it is also an AJP limitation and that protocol is owned by the Tomcat PMC.

> > I'd expect to see some error messages in the Tomcat logs.
> 
> No logs in error log. Access log shows:
> 
> 127.0.0.1 - - [11/Sep/2013:09:23:22 -0500] "GET
> /demo3/PUSH/?v-uiId=6&v-csrfToken=4e90dd10-d18f-4c97-901c-fb8d98effe22&X-
> Atmosphere-tracking-id=0&X-Atmosphere-Framework=1.0.14.vaadin4&X-Atmosphere-
> Transport=websocket&X-Atmosphere-
> TrackMessageSize=true&X-Cache-Date=0&Content-Type=application/json;
> %20charset=UTF-8 HTTP/1.1" 101 -
> 
> Thanks.

OK. We should take a look at that then as you you ideally see some form of
error if you try an http upgrade over AJP.

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