h2_mplx.c

mod_http2: h2 workers with improved scalability for better scheduling

performance. There are H2MaxWorkers threads created at start and the

number is kept constant.

mod_http2: ripped out H2SessionExtraFiles directive, removed super special sender pool handling in bucket beams.

*) mod_http2: stream timeouts now change to vhost values once the request

is parsed and processing starts. Initial values are taken from base

server or SNI host as before.

mod_http2: separate mutex instances for each bucket beam, resulting in

less lock contention. input beams only created when necessary.

mod_http2: signal eos on request input earlier, avoid unnecessary chunked, empty bodies, removing atomics from beam produce/consumed callback handling.

mod_http2: adding allocator mutex back to mplx after crash in stress test

mod_http2: removing extra mutex for h2 apr_allocators again.

with concurrent creation and destruction of their subpools.

mod_http2: aplogno tags, more unified log formatting

mod_http2: rework of stream states and cleanup handling.

*) mod_http2: rework of stream resource cleanup to avoid a crash in a close

of a lingering connection. Prohibit special file bucket beaming for

shared buckets. Files sent in stream output now use the stream pool

as read buffer, reducing memory footprint of connections.

[Yann Ylavic, Stefan Eissing]

reverting change 1779525.

*) mod_http2: streaming of request output now reacts timely to data

from other streams becoming available. Same for new incoming requests.

Fix mod_h2/github issue #126: correct lifetime of data sent on temp pools

* modules/http2/h2_bucket_beam.c

- ignore send pools that are sub-pools of the existing one

- added h2_beam_send_from() to allow explicit registering of the

correct pool for the sending

* modules/http2/h2_bucket_beam.h

- add prototype for h2_beam_send_from()

* modules/http2/h2_mplx.c

- adding logging of output beam state

* modules/http2/h2_stream.c

- register stream pool for sending data on input beam

* modules/http2/h2_task.c

- register task pool on output beam on creation

- adding trace logging

* modules/http2/h2_proxy_session.c

- fixing a type in a comment while we're at it

Follow-up to r1759547

mod_proxy_http2: improved robustness when main connection gets aborted