This post is realy old. I have one older webhosting server and i was needed implement http2. I am looking for solution for mpm_itk and http2 with apache.

My solution is nginx as reverse proxy (here is http2 and ssl/tls) and then apache with mpm_itk, mpm_prefork. Now is everithing, such as ftp for user, clean. I didn’t have to change anything. Communication between apache and nginx is only on http/1.1 and http protocol