Bug#915103: Apache2 HTTP/2 connection problems with Safari clients

[Philip Iezzi <debian@onlime.ch>]

Hi Stefan

>> On 17 Dec 2018, at 22:55, Stefan Fritsch <sf@sfritsch.de> wrote:
>> 
>> Yes, that's the problematic patch, not the fix.
>> 
>> I have some hope that the fix for the issue is this upstream commit:
>> https://svn.apache.org/viewvc?view=revision&revision=1843468
>> 
>> It would be nice if you could apply the attached patch to the debian source 
>> package, rebuild it, and check if it fixes the issue. Thanks.
> 
> Thanks a lot for that patch. I have applied it to apache2 2.4.25-3+deb9u6, compiled apache2 using dpkg-buildpackage, and installed apache2-bin package on production webserver. So far no issues.
> But I cannot tell you if it improved anything. The thing is, I couldn't reproduce the previous issue under desktop Safari right before patching Apache. I tried hard to reproduce it the same way I was able to reproduce it on Dec 14th. I switched back the relevant sites to HTTP/2 (Protocols h2 http/1.1) and tested in Safari checking web inspector console on a site where previously a bunch of jpg images were not loaded at all.
> So, it seems that magically, the problem went away by itself. Could the original issue be related to any load / buffer issues on long running apache??
> I am sorry that I cannot give you any more detailed feedback. It works fine with your patch as it did before...

I need to disappoint you. I was now able to reproduce the same issue under Apache with applied patch.
It was only a Safari browser caching thing why I couldn't reproduce it before. After emptying browser cache the problem occurred again. Switching back to http/1.1 resolves the issue.
So it looks like your patch did not change anything here.
Looking forward for your next trick!

Cheers,
Philip