12 Jul 2023 13:40:18 Dan McLaughlin <d...@danshome.net.INVALID>:
I can confirm that if I switch h2 to http, everything works as
expected, change it back to h2 or h2c, and it breaks.
That makes me think it is an h2 bug in Tomcat.
Mark, Please let me know if the http2 logs weren't enough to tell you
what's happening; if not, I'll work on creating a simple standalone
reproduction using docker.
I've looked through those logs and don't see anything. Enabling debug
logs for org.apache.tomcat.util.net might help but a reproducible test
case is probably the easiest for us to work with.
If you can avoid using docker that helps as it is one less thing for us
to unpick when digging for the root cause but we can work with a docker
based reproducible test case if needed.
Mark
--
Thanks,
Dan
On Wed, Jul 12, 2023 at 6:00 AM Dan McLaughlin <d...@danshome.net>
wrote:
Hi Mark,
I already provided the output from org.apache.coyote.http2.level =
FINE in the very first post to this thread. I didn't include
everything because all the header information includes things I don't
necessarily want to post publicly and because it would take a while
for me to obfuscate. I will see if it's reproducible with a curl
command and if I can reproduce it in a standalone docker image.
I will also try with mod_proxy_http, as suggested by Chris.
Let me know if there is more logging I truncated that you need to see
that might tell you where the problem is; if I can provide it, I will.
--
Thanks,
Dan
On Wed, Jul 12, 2023 at 3:34 AM Mark Thomas <ma...@apache.org> wrote:
On 11/07/2023 19:10, Dan McLaughlin wrote:
One other note, is I can switch to h2c, and it still fails, and a
packet
capture shows the entire JSON is delivered to Tomcat, and when I put
the
JSON from the packet inspection together (Packets 10199 --> 10208)
and
compare it to what the browser says was sent, they are identical.
There are
no signs of TCP retransmissions or other things you might expect to
see if
there was a networking related issue.
Hi Dan,
This looks like a possible Tomcat bug to me.
To debug futher I'd suggest the following:
Enable http2 debug logging by adding the following to
$CATALINA_BASE/conf/logging.properties
org.apache.coyote.http2.level = FINE
(that line should already be there, it just needs to be uncommented).
If you can provide a curl command or similar that triggers this issue
then please feel free to open a Bugzilla issue and attached the
script
and any relevant configuration snippets for httpd etc and we can try
and
reproduce it.
Thanks,
Mark
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