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hdr fetch doesn't work for response headers in 1.8.20 #153
Description
Output of haproxy -vv and uname -a
HA-Proxy version 1.8.20 2019/04/25
Copyright 2000-2019 Willy Tarreau <willy@haproxy.org>
Build options :
TARGET = linux2628
CPU = generic
CC = gcc
CFLAGS = -O2 -g -fno-strict-aliasing -Wdeclaration-after-statement -fwrapv -Wno-unused-label
OPTIONS = USE_LIBCRYPT=1 USE_CRYPT_H=1 USE_ZLIB=1 USE_REGPARM=1 USE_OPENSSL=1 USE_LUA=1 USE_SYSTEMD=1 USE_PCRE=1 USE_PCRE_JIT=1
Default settings :
maxconn = 2000, bufsize = 16384, maxrewrite = 1024, maxpollevents = 200
Built with OpenSSL version : OpenSSL 1.0.2g 1 Mar 2016
Running on OpenSSL version : OpenSSL 1.0.2n 7 Dec 2017
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports : TLSv1.0 TLSv1.1 TLSv1.2
Built with Lua version : Lua 5.3.1
Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND
Encrypted password support via crypt(3): yes
Built with multi-threading support.
Built with PCRE version : 8.38 2015-11-23
Running on PCRE version : 8.39 2016-06-14
PCRE library supports JIT : yes
Built with zlib version : 1.2.8
Running on zlib version : 1.2.11
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
Built with network namespace support.
Available polling systems :
epoll : pref=300, test result OK
poll : pref=200, test result OK
select : pref=150, test result OK
Total: 3 (3 usable), will use epoll.
Available filters :
[SPOE] spoe
[COMP] compression
[TRACE] trace
Linux <redacted> 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
What's the configuration?
defaults
mode http
timeout connect 50000
timeout client 50000
timeout client-fin 5000
timeout server 30000
frontend test1
bind :8900
http-response set-header test %[hdr(content-length)]
default_backend httpbin
backend httpbin
http-request set-header Host httpbin.org
server test httpbin.org:80
Steps to reproduce the behavior
- Run haproxy with the above config
curl localhost:8900/get -D - -o /dev/null -S- look at headers in response
Actual behavior
The "test" header is empty
Expected behavior
The "test" header should have the value of the "content-length" header in the response. This is how it worked in 1.7 and 1.8.14, and according to the documentation:
[hdr] is equivalent to ... res.hdr() when used on responses
And the above configuration does work as expected if the hdr fetch is changed to res.hdr.
Do you have any idea what may have caused this?
This appears to have been introduced between 1.8.14 and 1.8.20. Since my code was working when running 1.8.14 but broken when I upgraded to 1.8.20.
Do you have an idea how to solve the issue?
No
Activity
lukastribus commentedon Jul 3, 2019
This is already fixed by commit c1f40dd (
BUG/MINOR: http_fetch: Rely on the smp direction for "cookie()" and "hdr()") and will be released withv1.8.21.The regression was introduced in
v1.8.20.tmccombs commentedon Jul 4, 2019
oh, ok thanks.