Ability to correlate HTTP response to a HTTP request in iRules

Hi J,

You can set a variable in HTTP_REQUEST and check for it in HTTP_RESPONSE event:

when HTTP_REQUEST {

if {$some_check==1}{
set check_response 1
} else {
set check_response 0
}
}
when HTTP_RESPONSE {
if {$check_response==1}{
 do something
}
}

Aaron

Thanks, Aaron. I am novice in iRules.

 

 

Is this thread safe? Does it work for concurrent requests from multiple clients?

Yes, local variables are tied to a connection. Global variables (those set using 'set ::my_var value' in any non-RULE_INIT event or those set as 'set my_var value' or 'set ::my_var value' in RULE_INIT) are available across all connections. SMP summarized this nicely in this post. It's relevant for v10 and v11.

 

 

v10 - local vs. global vars

 

https://devcentral.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/1172260/showtab/groupforums/Default.aspx1172986

 

 

Aaron