For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Nicolas_MENOUX_'s avatar
Nicolas_MENOUX_
Icon for Nimbostratus rankNimbostratus
Apr 29, 2009

STREAM_MATCHED for regexp replace ?

Hi,     I'm using an IRule to replace Http content coming from our web servers in order to change image relative path to absolute path as described below :     when HTTP_REQUEST ...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Apr 29, 2009
Hi Nicolas,

 

The curly braces should prevent expansion of variables and interpretation of meta-characters (Click here). Also, due to a bug, you always ensure that double forward slashes (like those in http://) are enclosed in double quotes. And make sure to escape the periods or I think they'll be interpreted as a character repeat in a regex fashion:

 

 

STREAM::expression "@'/images/@'http://media\.$host\.com/images/@"

 

 

You only need to use STREAM_MATCHED if you want to log the match or modify the replacement strings.

 

 

Aaron