Suppress Redirect When APM Session Ends

Alternatively I came across this page...

https://devcentral.f5.com/wiki/iRules.ACCESS_POLICY_COMPLETED.ashx

See the example iRule. You could possible put a ACCESS::respond 200 content "" instead of the redirect.

when ACCESS_POLICY_COMPLETED {
  if {[ACCESS::policy result] eq "allow" } {
    ACCESS::respond 200 content "permitted" Content-Type "text/plain"
  }
}