irule to remove www. prefix from URIs

Here you go:

when HTTP_REQUEST {

    Check if the host starts with www.
   if {[string tolower [HTTP::host]] starts_with "www."}{

       Redirect with the www. prefix removed to the same URI
      HTTP::redirect "http://[string range [HTTP::host] 4 end][HTTP::uri]"
   }
}

If this is for HTTPS, your cert is only valid for example.com and the client requests www.example.com, this iRule won't prevent a cert mismatch warning. You'd also need to change the redirect from http:// to https://.

Aaron

Great, thanks for the quick response hoolio

My boss has just requested one that does the opposite, to redirect mysite.com to www.mysite.com.

 

 

Do you have one for that too?

 

 

Sure:

when HTTP_REQUEST {

    Check if the host does not start with www.
   if {not ([string tolower [HTTP::host]] starts_with "www.")}{

       Redirect with the www. prefix to the same URI
      HTTP::redirect "http://www.[HTTP::host][HTTP::uri]"
   }
}

Aaron

Thanks, I found this by searching, it will do the same job by the looks, unless the string to lower segment makes a difference?

 

 

when HTTP_REQUEST {

 

if { ! ([HTTP::host] starts_with "www.") } {

 

HTTP::redirect http://www.[HTTP::host][HTTP::uri]

 

}

 

}

 

 

Thanks again for your help

I've used your version anyway, and amended the redirect line to o https for the 443. Thanks hoolio.