Re: TCP server stop receiving new connections

On Jul 9, 1:06 am, Julián Rodríguez Bajo <julian.rodrig...@xxxxxxxxxx>
wrote:
Hi folks.

I have a strange problem in my class library used by all our client and
server applications.

There are servers listening on different ports for different purposes.
Sometimes (when a lot of new clients try to connect to the same server),
one of the servers (not allways the same one) stops accepting new
incomming connections, but keeps current connections. Server port
appears as LISTENING, but OnAccept never arrives to server. New client
connections receive a WSAECONNREFUSED error. In this situation, if I
call Accept directly in a test application, one incomming connection is
accepted, but no messages can be sent cliet -> server nor server ->
client, and after 15 seconds connection is dropped because of a custom
keep alive mechanism. Running server and a lot of client applications in
same machine fails the same way.

Both client and server processes use the same class library. The library
is a statically linked MFC based static library. Both classes, server
and client, derive from CAsyncSocket. There are no threads involved.

I have tried changing nConnectionBacklog parameter to Listen, but that
does not seems to make any effect.

Any suggestion would be apreciated.

Best regards.

--snip--
Both classes, server and client, derive from CAsyncSocket. There are no threads involved.

If you are not using threads fro non-blocked sockets then how you
honour the requests from multiple clients?

ali


.

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