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_Bellen1's avatar
Nicolas_Bellen1
Icon for Nimbostratus rankNimbostratus
Jun 03, 2011

REGEX Alternatives

I've been trying to figure out how i'd structure a particular portion of my iRule to look for values contained in a string, instead of a regular expression but i'm having some difficulty:     Th...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jun 03, 2011
Hi Nick,

 

 

The only option I can think of is if there are a static number of digits after the GMVM string. If so, you could potentially use string match to check for a match and then parse the hostname. However, I'm not sure that's going to be very elegant compared with the regexp command.

 

 

Once you get that version of the iRule working, you could consider testing a version which uses regsub from HTTP_RESPONSE_DATA to replace the internal hostname with the external one. It might be simpler than using a payload collect and a stream expression.

 

 

Aaron