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Subject [Bug 60956] Event MPM listener thread may get blocked by SSL shutdowns
Date Wed, 14 Jun 2017 06:20:09 GMT

--- Comment #9 from Frank Meier <> ---
Hi Luca,

Thanks again, for pushing this forward. Also my understanding of the code is
unfortunately not good enough to propose a patch.

I completely agree. Either the process of closing should be offloaded to a
worker thread, or the function "start_lingering_close_nonblocking" should
really guarantee, that it is 'nonblocking' like its name suggests. I slightly
favor the path, fixing the start_lingering_close_nonblocking function, but I
think this might be more difficult to do. The question is, what should happen
if the TLS "close notify" could not be sent. Maybe we could just close the
connection uncleanly in this case. It would not be so nice, but on the other
hand, at some point you want to get rid of the stalled connection and a 'hard'
close might be the only way to achieve that.


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