URL cookie

BERND HOEHENBERGER · ‎01-19-2011

Hallo,

we have some trouble with our sticky configuration" on an ACE Module.

We would like to do session persistence on an URL cookie with the name jsessionid.

now, I found a presentation about HTTP cookie troubleshooting with following:

=> If the cookie is not found, then the ACE looks for a string in the URL, starting with one of the characters /?&#+ and
followed by a "=", then parses that value.

=> Our URL: https://www-testtest.de/test/index.do;jsessionid=B05404082849E51068A764120663B36E-!server=1

=> the cookie starts with a ";" Could this be our problem?

=> If yes, is it possible to configure the ACE to look also for the ";" string.

The sticky configuration part looks like the following,

service-policy input pmap_TEST
policy-map multi-match pmap_TEST
class cmap-WWW_HTTPs
    loadbalance vip inservice
    loadbalance policy HTTPs-sticky
    loadbalance vip icmp-reply
    ssl-proxy server ssl-proxy_TFU-3
    !
    class-map match-any cmap-WWW_HTTPs
2 match virtual-address 1.2.3.4 tcp eq https

policy-map type loadbalance http first-match HTTPs-sticky
class class-default
    sticky-serverfarm sticky-cookie
    action actlist_HTTPMODIFY-http_https

sticky http-cookie jsessionid sticky-cookie
cookie offset 0 length 42
cookie secondary jsessionid
timeout 35
replicate sticky
serverfarm sfarm_Test

best regards

Bernd

litrenta · ‎01-19-2011

You need to configure an http parameter map to add ; to secondary cookie delimiters for example

parameter-map type http map1

secondary-cookie-delimiters ;!@#? note no space put each delimiter character in

then apply

policy-map multi-match pmap_TEST
class cmap-WWW_HTTPs
    loadbalance vip inservice
    loadbalance policy HTTPs-sticky
    loadbalance vip icmp-reply
    ssl-proxy server ssl-proxy_TFU-3

appl-parameter http advanced-options map1

BERND HOEHENBERGER · ‎01-19-2011

Hallo litrenta,

Thanks for your fast reply,

according the config guide there are two options:

http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/vA2_3_0/configuration/slb/guide/classlb.html#wp1245246

=> Defining URL Delimiters
=> Defining the secondary cookie start

our URL cookie starts with an ";" so shouldn't we use "set secondary-cookie-start" instead of the "set secondary-cookie-delimiters " command, or will we have the some result with both commands?
Regards
bhoehenberger

litrenta · ‎01-20-2011

yes you would change start to ; (it is usually ? ) and then make sure delimiter has ! so you don't pick up the second parameter.

But you need to be really careful with this since ? is almost universally used as beginning of parameters in url if later you send url in this connection with ? followed by parameters and you are parsing urls ace will parse all of the stuff after ?.