Forum Discussion

Kevan_50436's avatar
Kevan_50436
Icon for Nimbostratus rankNimbostratus
Apr 21, 2009

Changing the body of a response

We have an application that builds and returns pages containing URLs as part of the response body based on how it was called. For example:     Called as: http://a.b.c.d/something/so...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Apr 22, 2009
Here are a few suggestions: 

 
 when HTTP_REQUEST { 
  
     Only rewrite responses if request is a GET 
    if {[HTTP::method] eq "GET"}{ 
  
       set rewrite_response 1 
  
        Prevent server from compressing response content if we're potentially going to rewrite it 
          by removing the compression offerings from the client 
       HTTP::header remove "Accept-Encoding" 
  
    } else { 
       set rewrite_response 0 
    } 
 } 
  
 when HTTP_RESPONSE { 
  
     Check if the request was a GET and the response is a text content type 
    if {$rewrite_response && [HTTP::header "Content-Type"] starts_with "text/"}{ 
  
        Configure the find/replace for the stream filter and enable it 
       STREAM::expression @http://@https://@ 
       STREAM::enable 
  
    } else { 
        Disable the stream filter for this response 
       STREAM::disable 
    } 
 }

This assumes that the server doesn't include http:// references in the redirects. If it does, you could rewrite them following the logic in this post (Click here).

Aaron