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Forum Discussion

atoth's avatar
atoth
Icon for Cirrus rankCirrus
Sep 24, 2016

http::header value question

I'm trying to write an irule where based on the value of a custom http header it redirects to different servers. Its a little clunky, but when I figure where I'm going I put the values in datagroup ...
application delivery
iRules
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Sep 24, 2016

Hi Atoth,

I don't think that a data-group is the right choice for this task. The possible values are not that much and are also rather static.

But you may try the syntax below. It uses the 

[switch]
command with 
-glob
*[01234]
and 
*[56789]
patterns to route your request based on the last digit of the given header value...

when HTTP_REQUEST {
    switch -glob -- [HTTP::header value abc] {
        "*[01234]" { node 1.1.1.1 443 }
        "*[56789]" { node 2.2.2.2 443 }
           default { pool default_pool }
    }
}

Cheers, Kai