file: poke ustream after starting deferred program
authorJo-Philipp Wich <jo@mein.io>
Tue, 11 Feb 2020 07:59:48 +0000 (08:59 +0100)
committerJo-Philipp Wich <jo@mein.io>
Tue, 11 Feb 2020 14:48:59 +0000 (15:48 +0100)
commit2ee323c01079248baa9465969df9e25b5fb68cdf
tree615cc4129ef6565270b56cb06ae9ec17a5fe6ff2
parent5f9ae5738372aaa3a6be2f0a278933563d3f191a
file: poke ustream after starting deferred program

When we're starting a deferred request, the related input ustream might
have gone into read_blocked mode because incoming client request data
exhausted the ustreams internal buffer space. When this happens, edge
triggered uloop read events are "lost" and never re-triggered causing
the script input to never complete.

In order to avoid that deadlock situation, manually poke the input
ustream using ustream_poll() after invoking client_poll_post_data()
which should have drained (some) of the buffered input ustream contents.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
file.c