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Silvia_84906's avatar
Silvia_84906
Icon for Nimbostratus rankNimbostratus
May 04, 2010

Remove a parameter from a query

Hi all,   I'm trying to remove a parameter from a query and I've tried to do it in so many ways but they didn't work as I expected...     For example the URL could be:     And I'd li...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
May 04, 2010
If you want to remove the parameter name and value (if present) from the query string, you could try something like this: 


when HTTP_REQUEST {

    Check if the query string parameter value isn't null
   if {[HTTP::query] contains "X-VODAFONE-3GPDPContext="}{

       Use a workaround to parse the parameter value from the query string
       described on http://devcentral.f5.com/wiki/default.aspx/iRules/uri__query
      set param_value [URI::query "?&[HTTP::query] "&X-VODAFONE-3GPDPContext"]

       Save a copy of the URI with the param and value removed
      set uri [string map [list "X-VODAFONE-3GPDPContext=$param_value" ""] [HTTP::uri]]

       Replace && with & in the updated query string if && is present and set the URI to this
      HTTP::uri [string map "&& &" $uri]

       Log the cached and updated values for the URI
      log local0. "Original URI: [HTTP::uri], updated URI: [string map "&& &" $uri]"
   
   }
}

Aaron