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Rytis
Asked: 2021-04-17 04:55:44 +0800 CST

Haproxy acl based on URL param existence

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I am trying to route requests to different backends based on the existence of an URL param. I tried the following, but it never matches, even if my request contains a host param, e.g. POST http://127.0.0.1/result?build=2021041601&host=foo123:

acl has_host_urlparam urlp(host)
use_backend backend-host if has_host_urlparam
default_backend backend-generic

Do I have to compare the value returned from urlp() with something to check for existence of the param?

haproxy

1 Answers

  1. Best Answer

    Apparently, I was missing a flag to look for match existence:

    acl has_host_urlparam urlp(host) -m found
use_backend backend-host if has_host_urlparam
default_backend backend-generic
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