Apache HTTP Server Version 2.4
Apache Module mod_proxy_http2
|Description:||HTTP/2 support module for
supports HTTP/2 only, it does not
provide any downgrades to HTTP/1.1. This means that the backend
needs to support HTTP/2 because HTTP/1.1 will not be used instead.
mod_proxy_http2 works with incoming fronted requests
using HTTP/1.1 or HTTP/2. In both cases, requests proxied
to the same backend are sent over a single TCP connection
whenever possible (namely when the connection can be re-used).
Caveat: there will be no attemp to consolidate multiple HTTP/1.1 frontend requests (configured to be proxied to the same backend) into HTTP/2 streams belonging to the same HTTP/2 request. Each HTTP/1.1 frontend request will be proxied to the backend using a separate HTTP/2 request (trying to re-use the same TCP connection if possible).
This module relies on libnghttp2 to provide the core http/2 engine.
This module is experimental. Its behaviors, directives, and defaults are subject to more change from release to release relative to other standard modules. Users are encouraged to consult the "CHANGES" file for potential updates.
Do not enable proxying until you have secured your server. Open proxy servers are dangerous both to your network and to the Internet at large.
The examples below demonstrate how to configure HTTP/2 for backend connections for a reverse proxy.
ProxyPass "/app" "h2://app.example.com" ProxyPassReverse "/app" "https://app.example.com"
ProxyPass "/app" "h2c://app.example.com" ProxyPassReverse "/app" "http://app.example.com"
The schemes to configure above in
ProxyPassReverse for reverse proxying
h2c) protocols are the usual
http) as expected/used by
the user agent.