About the parallel processing of iRules

I would eliminate the loop altogether. If I understand what you're trying to accomplish, you simply need to set a global var to either allow incoming traffic to flow to the application server or to reject or redirect incoming traffic. You should not wait for the application server to decide for each request at request time and wait for that answer. In otherwords, just check the flag and reject traffic or alllow traffic depending on the state of the flag.

 

 

And to change the state of the flag, the code on your application server should make an http request to the same virtual server with two different URLs (e.g. http:///bandwidthcontrol_go and http:///bandwidthcontrol_stop) which will toggle the flag by triggering the appropriate section in the iRule.

 

 

Hope this does what you need. Again, if your application server can make web services calls, another way is to use iControl to for example enable and disable the node.

 

 

//Joe