multitask in p2p sip.

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I use multitask in "p2p sip" modules. I added in multitask some generators 
function (invite, register, accept...). 
But when user make a call, I saw that after 10-15 seconds my invite function 
run. I think it is too long. When i debug i saw multitask do  the function 
"_handle_io_waits" before do my invite function, it took a long time. And some 
time I got a error time out exception.
Please help me.
Thanks

Original issue reported on code.google.com by run...@gmail.com on 30 Jul 2010 at 3:03