Using Priorities in irules

Hi Jodie,

 

 

Priority allows you to specify which iRules or iRule events run in which order. Priority by itself doesn't prevent any code from running though. The issue you're running into is that you cannot try to redirect or send an HTTP(S) response more than once for a single HTTP request.

 

 

You can combine the two steps in one iRule and avoid this issue:

 

 

 
 when HTTP_REQUEST { 
  
     1) if user enters abc.com redirect to https://www.abc.com 
     2) if user enters www.abc.com redirect to https://www.abc.com 
  
     Check the requested host header value (set to lowercase) 
    switch [string tolower [HTTP::host]] { 
       "abc.com" - 
       "www.abc.com" { 
           Redirect client to https://www.abc.com/ 
          HTTP::redirect "https://www.abc.com/" 
       } 
       default { 
           Take some default action? 
       } 
    } 
 } 
 

 

 

If you want to preserve the originally requested URI in the redirect, you can check the redirect to:

 

 

HTTP::redirect "https://www.abc.com[HTTP::uri]"

 

 

Aaron