Auto bandwidth test before streams..?

[soundey]

I have 2 servers streaming 2 different bitrates.. i was wondering if anyone would know how to set up an auto script to test the clients bandwidth to auto decided which stream would be best. i am using 32k mono and 128k stereo so there would only be a choice of 2.. Does anyone know how to do this? i have bandwidth test scripts.. just unsure how to automate it into the streams