APM webtop to Citrix - what timeouts control session traffic stopping?
Environment - Big-IP 4200v running 11.5.2 plain, no hotfix.
Context: APM webtop providing an SSL tunnel to XenApp servers via a Citrix remote desktop. Remote desktop is configured with XenApp XML Broker IP (actually, LTM pool of such brokers). Webtop replaces Storefront, provides launch icons.
Doing tsharks to observe traffic, I notice that when we launch a XenApp hosted application, then close that application, the traffic between the F5 to the XenApp host server continues (and not just a little, consistent packet flow) for 350 - 400 seconds before ceasing. Not sure why - keeping it open in case of a subsequent launch? Not sure.
I presume that's controlled by timeouts ... but I can't tell what timeouts, nor where (on the F5 or on the XenApp side).
I would like to reduce how long the connection stays open and has traffic flow as much as reasonable. So where is this post-app-close traffic controlled? And what are the tradeoffs for reducing how long the connection is left open?
thx!