Hi, in the traces Dmitry Sivachenko sent to me privately, I found that the trash buffer was overflown by a rewriting of too large a request. The reason is that the trash buffer is of size BUFSIZE while the buffer size was increased in the global section using tune.bufsize.
I thought we had fixed that issue long ago but it appears the problem is still present both in 1.4.20 and 1.5-dev10. So please, be careful, don't increase tune.bufsize beyond your default buffer size if you use reqrep rules. The default buffer size is 16384, unless you built haproxy with different options in which case you'll find it in the output of "haproxy -vv" : $ ./haproxy -vv HA-Proxy version 1.4.20-3 2012/03/24 Copyright 2000-2012 Willy Tarreau <[email protected]> Build options : TARGET = linux24e CPU = i586 CC = i586-flx-linux-gcc CFLAGS = -O0 -g -fno-strict-aliasing -DBUFSIZE=8030 -DMAXREWRITE=1030 OPTIONS = USE_LINUX_SPLICE=1 USE_LINUX_TPROXY=1 USE_STATIC_PCRE=1 Default settings : maxconn = 2000, bufsize = 8030, maxrewrite = 1030, maxpollevents = 200 ^^^^^^^^^^^^^^ here I'm checking where the patch for this issue has gone and am going to issue a fixed version for 1.4 so that distro packagers can update their packages. Sorry for the inconvenience, Willy
