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Forum Discussion

John_Heyer_1508's avatar
John_Heyer_1508
Icon for Cirrostratus rankCirrostratus
Jul 13, 2015

How to get domain name in iRule?

I have a redirect rule that I need to apply to about 30 different FQDNs: foo.domain1.com/XYZ -> bar.domain1.com/XYZ foo.domain2.com/XYZ -> bar.domain2.com/XYZ foo.domain3.com/XYZ -> bar.domain3....
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cjunior's avatar
cjunior
Icon for Nacreous rankNacreous
Jul 13, 2015

Hi,

If you do not need to treat the domain name, you could do this with the "string map" statement. 
when HTTP_REQUEST {
   if { [HTTP::host] starts_with "foo." } {
        HTTP::redirect "https://[string map -nocase {foo. bar.} [HTTP::host]][HTTP::uri]"
   }
}

otherwise, you could treat it with "string range" and "string first" statement. 

when HTTP_REQUEST {
   if { [HTTP::host] starts_with "foo." } {
        set dotdomain [string range [HTTP::host] [string first . [HTTP::host]] end]
        set host bar$dotdomain
        set url https://$host[HTTP::uri]
        log local0. "Domain $dotdomain | Host: $host | Url: $url"
        HTTP::redirect $url
   }
}

It's just a tip, I hope it helps you. Regards