Sockets question

"Karim" <>
23 Feb 2007 20:01:57 -0800

I have a server that it very simple. I declare a socket and I get a
descriptor and when calling listen i pass the value 5
(listen(g_socketDescriptor, 5) so I can queue 5 connections on that

Every time the blocking call to Accept() returns, I get back a new
descriptor say x1 ,x2,... x5
and I spawn a thread that does some heavy processing and write back to
the socket descriptor (x1,..,x5) that the thread was spawned with then
after a bit, it writes to this socket.

on the client side I noticed sometimes corrupted data which means the
threads when they write to those descriptors (using the call send()) i
might be sending data to the wrong client.

My understanding is that the descriptor is a unique identifier that i
could use to decide who to exactly send the data too from the

Can anyone see what is going wrong here? The code is too big so I`ll
just maybe give a snapshot.

        g_socketDescriptor = socket(PF_INET,SOCK_STREAM,0);
        bind(g_socketDescriptor,(struct sockaddr*)&socketAddress,
sizeof (socketAddress)

        int finalId;
        pthread_t tid;
        while (true)
            if ((finalId = accept(g_socketDescriptor,
                                (struct sockaddr*)&remoteAddress,
                                &remoteAddressLen)) == -1)

Thread code:

    // do some processing, then send some data


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