internal void ProcessRequestMessage(Stream requestStream, MessageReceiveTask receiveTask)
{
// invariant: only one thread processing the first 3 statments at one instance in time
// (statement nr 3 can lead to a next read allowing another i/o completion thread
// to call this method)
try {
// call is serialised, no need for a lock; at most one thread is reading messages from transport.
Interlocked.Increment(ref m_requestsInProgress);
m_msgReceiveTask = receiveTask;
m_receiver.ProcessRequest(requestStream, m_serverCon);
// in the mean time, deserialise request notification may have been sent.
// -> multiple requests are possible in progress and execute the following code
int receivePending = Interlocked.Exchange(ref m_receivePending, NO_RECEIVE_PENDING);
Interlocked.Decrement(ref m_requestsInProgress);
// ReceivePending will be again set to true, when a request has been deserialised
// and too many requests are processing
if (receivePending == RECEIVE_PENDING)
{
// too many requests in parallel last time when trying to start receive
// in NotifyDeserialiseRequestComplete -> do it now
StartReadNextMessage();
}
} catch (Exception ex) {
HandleUnexpectedProcessingException();
Trace.WriteLine("stopped processing on server connection after unexpected exception: " + ex);
}
}
