On 2010-02-04 21:15, Sriram Chavali wrote: > I am trying to rewrite URLs using haproxy's reqirep directive. The url that I > am trying to rewrite is of the pattern > /action/register?param1=foo¶m2=bar¶m3=baz > > The URL that I want to be rewritten is > /newaction?param1=foo¶m2=bar¶m3=baz on the condition that whenever > param2=bar > > The ordering of the query string parameters can be random, i.e param2 could > be the 1st parameter or the last one.
In Haproxy 1.3.x it is currently not possible to issue a reqirep on a conditional basis. This is however introduced in Haproxy 1.4-rc1. There you could solve your problem using something like this: acl baz url_sub ¶m2=bar ?param2=bar reqirep ([^\ ]*)\ /action/register\?(.*) \1\ /newaction\?\2 if baz On 1.3.x you could however use something like the following which performs a content switch based on the acl and performs the reqirep later in the backend. You might want to look into the track keyword for the servers. frontend foo bind :80 mode http acl baz url_sub ¶m2=bar ?param2=bar use_backend baz if baz backend baz reqirep ([^\ ]*)\ /action/register\?(.*) \1\ /newaction\?\2 server foo 192.168.1.1:80 Yes, this is uggly but as far as I know it is the only possibility by now. (And yes, I see forward to remove many such backends in my installations too) --Holger
