Re: Deaf CAsyncSocket on Windows Service.

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Wed, 21 Jan 2009 10:09:49 -0500
"Bill >" <<don't want more spam> wrote in message

I agree that CAsynSocket must work otherwise networking, Internet Explorer,
the Internet, etc. would all be unreliable.

The problem is that I don't see anything in the callback that I believe
would be pumping messages. Basically the callback just gets a CString from
my derived class and pushes (AddHead) it into a CList to be checked and
pulled out later by another part of the program. We don't process the
CString immediately in the callback. The program is multithreaded but I
don't know if any other thread is doing any message pumping or if that
would even cause a problem to the socket in its thread.

Other threads don't matter and can not effect the handling of the socket
thread's message queue.

If so, wouldn't I still expect to see the failure when I do only one
Receive() per OnReceive()? And if not, what else could be causing the
error when I do more than one Receive() in OnReceive()?

I did just test for double entry into OnReceive() while I had restored the
loop that calls Receive() more than one per OnReceive(). The problem
occurs but there was no double entry into OnReceive(). I kept the receive
buffer purposely short to guarantee that there was always more than one
Receive() per OnReceive().


Reentry is just one of the possible outcomes, so its absence is not telling.
I don't have any other theories. Glad it's working for you,.

Scott McPhillips [VC++ MVP]

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