Created attachment 37003 [details]
chrome http2 har

If I enable the h2 protocol on my virtual host, then all POST requests that send an empty json object `{}` fail to get proxified when sent from firefox or chromium.
It works fine with requests sent from curl or idea.

As only the empty body requests fail, I assume it is a bug in mod_proxy, mod_http2 or mod_ssl, but it might be a firefox/chromium bug as well. Feel free to let me know and Ill open a ticket there.

Under firefox, it seems the request may sometimes pass. 

The failing requests get the error:
[proxy_http:error] [pid 86:tid 139928507143936] (70008)Partial results are valid but processing is incomplete: [client 172.21.0.1:36444] AH01095: prefetch request body failed to 172.21.0.3:8080 (as) from 172.21.0.1 (), referer: http://localhost:4200/trustee/list

Im attaching the vhost config and several error logs at trace4 level.
- log of a failing request sent on h2 by firefox + har
- log of a failing request sent on h2 by opera (chromium) + har
- log of a succesful request on h2 sent by idea
- log of a successful request sent on http1 by opera (chromium).