Doing a HEAD request via a proxy setup against localhost. Getting the response after a 5 second delay. Frontend connection h1/h2 does not matter. Also does not matter if mod_proxy_http or mod_proxy_http2.
Making the same request a GET works flawlessly. Also HEAD works right against current 2.4.x build with same config. Rings any bell? Someone doing a read with timeout? [Thu Mar 30 11:23:30.272432 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(427): [client 127.0.0.1:59674] Headers received from client: [Thu Mar 30 11:23:30.272444 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] Host: test.example.org:12346 [Thu Mar 30 11:23:30.272450 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] User-Agent: curl/7.53.1 [Thu Mar 30 11:23:30.272455 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] Accept: */* [Thu Mar 30 11:23:30.272461 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] Via: 1.1 test.example.org:12346 (Apache/2.5.0-dev) [Thu Mar 30 11:23:30.272469 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] X-Forwarded-For: 127.0.0.1 [Thu Mar 30 11:23:30.272474 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] X-Forwarded-Host: test.example.org:12346 [Thu Mar 30 11:23:30.272480 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] X-Forwarded-Server: test.example.org [Thu Mar 30 11:23:30.272485 2017] [http:trace4] [pid 92406:tid 123145333862400] http_request.c(430): [client 127.0.0.1:59674] Connection: Keep-Alive [Thu Mar 30 11:23:30.272946 2017] [http:trace3] [pid 92406:tid 123145333862400] http_filters.c(1070): [client 127.0.0.1:59674] Response sent with status 200, headers: [Thu Mar 30 11:23:30.272962 2017] [http:trace5] [pid 92406:tid 123145333862400] http_filters.c(1079): [client 127.0.0.1:59674] Date: Thu, 30 Mar 2017 11:23:30 GMT [Thu Mar 30 11:23:30.272968 2017] [http:trace5] [pid 92406:tid 123145333862400] http_filters.c(1082): [client 127.0.0.1:59674] Server: Apache/2.5.0-dev (Unix) OpenSSL/1.1.0e [Thu Mar 30 11:23:30.272976 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Alt-Svc: h2=\\":12346\\", h2c=\\":12345\\", h2=\\"mod-h2.greenbytes.de:12346\\" [Thu Mar 30 11:23:30.273008 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Connection: Upgrade, Keep-Alive [Thu Mar 30 11:23:30.273015 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Last-Modified: Thu, 30 Mar 2017 11:23:26 GMT [Thu Mar 30 11:23:30.273021 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] ETag: \\"7d5-54bf0ebed8780\\" [Thu Mar 30 11:23:30.273026 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Accept-Ranges: bytes [Thu Mar 30 11:23:30.273043 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Content-Length: 2005 [Thu Mar 30 11:23:30.273046 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Keep-Alive: timeout=5 [Thu Mar 30 11:23:30.273050 2017] [http:trace4] [pid 92406:tid 123145333862400] http_filters.c(900): [client 127.0.0.1:59674] Content-Type: text/html [Thu Mar 30 11:23:30.339478 2017] [proxy:debug] [pid 92409:tid 140735686718400] proxy_util.c(1838): AH00925: initializing worker proxy:reverse shared [...some more worker init stuff] [Thu Mar 30 11:23:30.340340 2017] [proxy:debug] [pid 92409:tid 140735686718400] proxy_util.c(1914): AH00930: initialized pool in child 92409 for (www.zeit.de) min=0 max=20 smax=20 [Thu Mar 30 11:23:35.277379 2017] [proxy:debug] [pid 92404:tid 123145474248704] proxy_util.c(3433): [client 127.0.0.1:59673] AH02807: Removing header 'Upgrade' listed in Connection header [Thu Mar 30 11:23:35.277421 2017] [proxy:debug] [pid 92404:tid 123145474248704] proxy_util.c(3433): [client 127.0.0.1:59673] AH02807: Removing header 'Keep-Alive' listed in Connection header
