Forum Discussion

Nimbostratus

Apr 22, 2015

Better way to Cleaning UP string variable

Hi all I must use the destination FQND of a TCP connection. I'm able to collect the TCP payload but I need to compare it with a data-class. But before doing that I need to clean the TCP payloa...

Sheigh_65772
Apr 22, 2015
How about using scan?

If the variable string is set '9net.tcp://sub.domain.com:12345/abcdefg' or 'sometotherstuff9net.tcp://sub.domain.com:12345/abcdefg/lkjsdflkj/sdfl' etc then try using

scan $string {%*[^/]//%[^:]} fqdn

this results in a new variable $fqdn of 'sub.domain.com'

You can test it out by using the tclsh

% set string "lkasdflkjwe234239net.tcp://sub.domain.com:12345/abcdefg/sdlfkjasf" lkasdflkjwe234239net.tcp://sub.domain.com:12345/abcdefg/sdlfkjasf % puts $string lkasdflkjwe234239net.tcp://sub.domain.com:12345/abcdefg/sdlfkjasf % scan $string {%*[^/]//%[^:]} fqdn 1 % puts $fqdn sub.domain.com

Check out this link: https://devcentral.f5.com/articles/irules-101-18revisiting-the-tcl-scan-command

FYI I'm just starting to play with scan so YMMV.

Sheigh