Emulating AJAX polling requests

Hi,

We have an web application in which JavaScript periodically polls the 
server.

To emulate this, I created a Python Thread that periodically executes a 
callback to an instrumented TestRunner method, the executes the poling 
request.

This approach generated the following error:  "Only Worker Threads can 
invoke tests".   Apparently Grinder does not allow Python-created 
threads to execute instrumented methods.

Is there another way this task can be accomplished?

Thanks,

Tim


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