iRule to send multipart file upload to a different pool

I think I found my problem!

There is an event disable statement in another irule in the http_request event. Which, if I understand it correctly, means that the http_request event will be disabled for all future requests on the same connection.

What is considered best practice when you have multiple irules that look to specifically set the pool based on certain conditions? Set a variable in the client_accepted event to store the selected pool?

Cheers,

Simon