Re: casyncsocket communication between service loaded dll and an exe
FYI, MFC is officially not supported in NT services.
Microsoft MVP [VC], MCSD
MVP VC FAQ: http://vcfaq.mvps.org
"r norman" <r_s_norman@_comcast.net> wrote in message
On Tue, 1 May 2007 11:49:07 -0700, "Michael K. O'Neill"
"Inna Raykhman" <firstname.lastname@example.org> wrote in message
i have a process that runs as a service, that loads standard C dll
"A", that in turn loads mfc dll "B".
this dll "B" does Connect() in a class derived from CAsyncSocket, to
try and connect to another exe - exe "R", that runs on same machine as
a regular process. this exe "R" sees the connect and does Accept().
in dll "B" the onConnect() is never triggered. and the initial
Connect() always comes back with WSAEWOULDBLOCK.
when i test same setup by loading dll "B" from a test mfc app that i
wrote, everything works fine, onConnect is triggered every time and
everyone is happy.
are there any socket limitations to service processes?
CAsyncSocket only works if your process has a message loop (i.e., if it
services a message queue).
If your process does not have a message loop, then none of the OnXxxx()
functions like OnConnect() will ever be called.
Exactly. I have a service that uses CAsyncSocket which is created in
the InitInstance() of a class derived from CWinThread. That takes
care of the message loop nicely.
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