BUG: Lua service timeouts while sending data (after 0194897e540cec67d7d1e9281648b70efe403f08) (2 replies)

Hello guys,

I've noticed that a Lua service timeouts in DATA phase, for outputs
equal or bigger than 8k (approx).

After the timeout (timeout client), it returns the full response.
(Termination state is cD--)

I've attached the minimal configuration and a Lua script to trigger the
problem. You might need to tweak the length of test string, I even have
different behavior depending on the Lua code:

-- variant a) loop with hardcoded bounds:
for i = 1, 7492 do

-- variant b) using local variable
local body_len = 7491
for i = 1, body_len do

Makeflags:
make TARGET=linux2628 USE_GETADDRINFO=1 USE_ZLIB=1 USE_OPENSSL=1
USE_LUA=1 USE_PCRE=1 USE_PCRE_JIT=1


git bisect tells me the bug appears after the following commit:

commit 0194897e540cec67d7d1e9281648b70efe403f08
Author: Emeric Brun <ebrun@haproxy.com>
Date: Thu Mar 30 15:37:25 2017 +0200

MAJOR: task: task scheduler rework.


Best regards,
Adis
global
log /dev/log local0 debug
lua-load /etc/haproxy/lua/block.lua

defaults
log global
mode http
option httplog
timeout connect 5s
timeout client 7s
timeout server 10s

listen block
bind 127.0.0.1:9001
http-request use-service lua.block