CSocket, best way to wait for a reply?

Hi,

I have a 'client' and a 'server', (both the same sub-classes of CSocket).
Basically the client sends a message to the server and in turn the server
sends a message back to the client.
I allow a few seconds for the server to reply back to the client. Ideally it
should not take more than a few milliseconds.
The client waits for it's reply, (recognized by a special header in the
message).

So what I have is a function that does something like...

void MyMessage( void *pData, int nSize )
{
pMySocket->Send( pData, nSize );

// wait for a reply from the server
while( pMySocket->pReplyBuffer == NULL ){
sleep(0); // give time back to the queue
// wait for a few seconds only
}

// either timeout or no reply sent
}

// The server then receives the message sent
// sends a reply back to the client
// who in turn fills the void *pReplyBuffer
//
// once "pReplyBuffer" is no longer NULL I know that data has returned.

But I have 2 problems

1) As you can see the wait is totally inadequate. it hangs the system. So
what would be the best way to wait for a few seconds?
What I am doing now is ::PeekMessage( &msg, 0, 0, PR_REMOVE), but I don't
feel good handling ALL the messages that way.
PeekMessages only for socket ones does not seem to work and still causes the
system to hang.

2) Sometimes the Send(..) -> (who then calls the SendChunk() function),
simply hangs and waits forever for the PumpMessages(FD_WRITE) to return.
What could I be doing wrong.

Many thanks

Simon


.

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