Thx for your answer Thierry. If you try with the URI : /dump_headers.php?p1=value1&ua=word1;word2;word3&otherparam=test
Urlp called in haproxy configuration will return : “word1” which corresponds to your answer. But if you use urlp from lua, it will return you the correct value, see my dump : [info] 341/214152 (2580) : ua=word1;word2;word3 The difference of answer between theses 2 urlp call looks strange from my side. As far as I know, a parameter value starts after the “=“ and ends either at the first “&” encoutered or at the end of the URI. So using urlp from lua, I thing there is only something wrong when there is “;+” or “+;” in the value of the parameter. Using urlp from haproxy should have the same behaviour as using urlp from lua. Does that make sense ? Or I’m really mistaken ? Best Laurent On 08/12/15 11:23, "Thierry FOURNIER" <[email protected]> wrote: >Hi, > >I agree with you, but in HAProxy, the ';' is considered as parameter >delimiter. Its hardcoded, and I don't known the reason. > >So the behaviour that you observe is the normal HAProxy behaviour. > >Thierry > > > >On Tue, 8 Dec 2015 09:17:38 +0000 >Laurent Penot <[email protected]> wrote: > >> HI, >> >> I received URL from which i need to extract several parameters, I do that >> using urlp in lua. Values of parameters are urlencoded. >> And I notice something strange : urlp seems to get only the first part of >> the value when the 2 char “;+” or “+;” are in the value of the parameter. >> >> From the php point of view, using >> http://php.net/manual/en/function.urlencode.php , the 2 char “;+” or “+;” is >> valid in an urlencoded string. >> >> >> Here are 2 tests URL and the dumped value from lua: >> /dump_headers.php?p1=value1&ua=word1+;word2&otherparam=test >> [info] 341/090330 (130491) : ua=word1+ >> The dumped value should be : word1+;word2 >> >> /dump_headers.php?p1=value1&ua=word1;+word2&otherparam=test >> [info] 341/090951 (130491) : ua=word1 >> The dumped value should be : word1;+word2 >> >> Here is the haproxy config file (I removed everything not related to my >> question) : >> global >> debug >> # lua file >> lua-load url.lua >> >> defaults >> mode http >> >> frontend fe >> bind :80 >> acl testurl url_beg /dump_headers.php >> http-request lua.logValue if testurl >> use_backend beok >> >> backend beok >> server mysrv 127.0.0.1:8080 check inter 1000ms fall 3 rise 1 weight 100 >> >> >> Here is the lua file : >> core.register_action("logValue", {"http-req"}, function(txn) >> local var = txn.f:urlp("ua"); >> core.Info("ua=" .. var); >> end) >> >> >> >> haproxy -vv >> HA-Proxy version 1.6.2 2015/11/03 >> Copyright 2000-2015 Willy Tarreau <[email protected]> >> >> Build options : >> TARGET = linux2628 >> CPU = generic >> CC = gcc >> CFLAGS = -O2 -g -fno-strict-aliasing -Wdeclaration-after-statement >> OPTIONS = USE_ZLIB=1 USE_OPENSSL=1 USE_LUA=yes USE_DEVICEATLAS=1 USE_PCRE=1 >> >> Default settings : >> maxconn = 2000, bufsize = 16384, maxrewrite = 1024, maxpollevents = 200 >> >> Encrypted password support via crypt(3): yes >> Built with zlib version : 1.2.3 >> Compression algorithms supported : identity("identity"), deflate("deflate"), >> raw-deflate("deflate"), gzip("gzip") >> Built with OpenSSL version : OpenSSL 1.0.2d 9 Jul 2015 >> Running on OpenSSL version : OpenSSL 1.0.2d 9 Jul 2015 >> OpenSSL library supports TLS extensions : yes >> OpenSSL library supports SNI : yes >> OpenSSL library supports prefer-server-ciphers : yes >> Built with PCRE version : 7.8 2008-09-05 >> PCRE library supports JIT : no (USE_PCRE_JIT not set) >> Built with Lua version : Lua 5.3.1 >> Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT >> IP_FREEBIND >> >> 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. >> >> Running on centos 6. >> I notice the same thing with haproxy 1.6.1 and lua 5.3.1 or 5.3.0 >> >> Note : in the frontend, if I use : http-request set-header X-debugua >> %[urlp(ua)] >> I get the same value as I get from Lua. >> >> >> Can you tell me if I do something the wrong way or if it is a bug or if it >> is intended ? >> >> Best regards >> Laurent >> >> >>
