How to replace the hostname from a FQDN in HTTP:HOST

Question

Hi&nbsp;&nbsp;How is it possible to replace only the hostname within an irule?&nbsp;&nbsp;&nbsp;Example:&nbsp;&nbsp;&nbsp;Client requests www.trustme.com so [HTTP:Host] contains this name.&nbsp;How can I replace only the "www" with "www2" and response
&nbsp;www2.trustme.com to the client?&nbsp;&nbsp;&nbsp;Many thanx&nbsp;bb&nbsp;

chris_miller · Answer

when HTTP_REQUEST { 
     if { [string tolower [HTTP::host]] eq "www.trustme.com" } { 
          HTTP::redirect "http://www2.trustme.com[HTTP::uri]" } } 
  
 That'll send a redirect to the client for www2.

andrea_arquint · Answer

Hi Chris&nbsp;&nbsp;I probably did not clear explain what I need.&nbsp;&nbsp;&nbsp;For example:&nbsp;&nbsp;&nbsp;we have some domains...&nbsp;&nbsp;&nbsp;www.test1.com&nbsp;www.test2.com&nbsp;&nbsp;&nbsp;Now I want to get only the domains to create a new one like:&nbsp;&nbsp;&nbsp;In case of www.test1.com&nbsp;mobile.test1.com&nbsp;&nbsp;&nbsp;In case of www.test2.com&nbsp;mobile.test2.com&nbsp;&nbsp;&nbsp;etc...&nbsp;This should be more dynamically then with a "switch" method:&nbsp;&nbsp;&nbsp;I think should be something like...&nbsp;&nbsp;&nbsp;set dom [HTTP:Host]&nbsp;extract only the domain in this case test1.com build the new FQDN.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I hope I did clearly describe what I mean.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Many thanx&nbsp;andy&nbsp;

jrahm · Answer

You were there and you didn't know it!  The domain command is your friend: http://devcentral.f5.com/wiki/default.aspx/iRules/domain.html Click Here 
&nbsp;  
&nbsp; So you would want something like this: www2.[domain [HTTP::host] 2] 
&nbsp;  
&nbsp; HTH....Jason

andrea_arquint · Answer

Hi Jason&nbsp;&nbsp;Thanx for your help...&nbsp;

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How to replace the hostname from a FQDN in HTTP:HOST

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