mod-h2 v1.15.11
- mod_proxy_http2: the "ping" proxy parameter
(see https://httpd.apache.org/docs/2.4/mod/mod_proxy.html) is now used
when checking the liveliness of a new or reused h2 connection to the backend.
With short durations, this makes load-balancing more responsive. The module
will hold back requests until ping conditions are met, using features of the
HTTP/2 protocol alone. [Ruediger Pluem, Stefan Eissing]