Forum Discussion
Sky_News_Dev_85
Nimbostratus
NimbostratusCan't remove session cookie with our iRule
Hi,
we are running BIG-IP 9.4.5 and we are using iRule to insert and then remove a specific cookie. The addition (seesion) works great but the iRule to remove the cookie simply does not work.
The iRules we have in place looks like:
Adding Cookie
when HTTP_RESPONSE {
if {[HTTP::header exists X-cookie ]}{
HTTP::cookie insert name "cookie" value [HTTP::header value "X-cookie"]
}
}
Removing Cookie
when HTTP_RESPONSE {
if {[HTTP::header exists X-cookieRemove]}{
remove the at cookie
HTTP::cookie remove "cookie"
}
}
I know that the rule for the header works, i.e. it can find the X-cookieRemove but somehow it does not seem to find the cookie but I can see the cookie using firebug.
Any ideas?
Regards
Andrea
hoolioCirrostratus
Hi Andrea,
Can you describe what you're trying to do? The iRule (or iRules?) you've posted are doing the inverse of each other in the same event.
Thanks,
Aaron
Sky_News_Dev_85Hi,
yes sorry about not being clear. For testing purposes I created two iRules, one that checks for the header X-cookie and if available creates the cookie. This is working as expected.
The second iRule which looks for a header X-cookieRemove should remove the cookie created by the first iRule. Despite that I can see the cookie available using firebug etc the cookie never gets removed by the HTTP::cookie remove command since it seems the cookie does not exist here. I know the header exists and the rule is triggered.
The application is creating the headers so we never expect both headers at the same time (same repsonse).
Regards
Andreas- hoolioThanks for clarifying. Can you add logging to the iRule:
Removing Cookie when HTTP_RESPONSE { log local0. "\[HTTP::header exists X-cookieRemove\]: [HTTP::header exists X-cookieRemove];\ \[HTTP::cookie \"cookie\"\]: [HTTP::cookie "cookie"]" if {[HTTP::header exists X-cookieRemove]}{ remove the at cookie HTTP::cookie remove "cookie" } log local0. "\[HTTP::cookie \"cookie\"\]: [HTTP::cookie "cookie"]" }
Thanks,
Aaron - Rick_Thompson_7This is the output of the log file...
Thu Dec 31 14:50:55 GMT 2009 tmm tmm[1798] Rule sky_remove_at_cookie HTTP_RESPONSE: [HTTP::header exists X-atRemove]: 0 [HTTP::cookie at]:
Thu Dec 31 14:50:53 GMT 2009 tmm tmm[1798] Rule sky_remove_at_cookie HTTP_RESPONSE: [HTTP::cookie at]: - hoolioHi Rick,
[HTTP::header exists X-atRemove] is returning 0. This indicates that the X-atRemove header doesn't exist in the response, so the cookie isn't being removed.
Aaron