Comment 44 for bug 1641238

Everything looks fine until:
[Fri Mar 08 15:23:06.165463 2019] [proxy:error] [pid 869:tid 140678264567552] (104)Connection reset by peer: [client 127.0.0.1:53920] AH01084: pass request body failed to 127.0.0.1:42180 (localhost)
[Fri Mar 08 15:23:06.165530 2019] [proxy_http:error] [pid 869:tid 140678264567552] [client 127.0.0.1:53920] AH10154: pass request body failed to 127.0.0.1:42180 (localhost) from 127.0.0.1 () with status 502

After that httpd eats the rest of the request body (more than 100MB overall), and responds with 502. The backend really looks faulty here.