//
// FUNCTION : listen
//
// DESCRIPTION : This method will loop looking for messages sent from the server into the message queue. When found, it will
// format the message, close the queue and print the message to the screen.
//
// PARAMETERS : NA
// RETURNS : None
//
private void listen()
{
while (!this.finished)//Listen forever or until the finished variable is set to true
{
try
{
if ((clientQueue != null) && (myClient.connected = true))
{
message = new ClientInfo();
//timespan set for graceful shutdown
message = (ClientInfo)clientQueue.Receive(new TimeSpan(0, 0, 1)).Body;
string messRecv = message.message;
clientQueue.Close();
if (message != null)
{
this.Dispatcher.Invoke(() =>
{
//append received message to screen and scroll to most recent message
TextScreen.AppendText(messRecv + "\n");
TextScreen.ScrollToEnd();
});
}
}
}
catch (MessageQueueException mqex)
{
//catching timeout exceptions and continuing loop (needed for graceful shutdown)
if (mqex.MessageQueueErrorCode == MessageQueueErrorCode.IOTimeout)
{
continue;
}
System.Windows.MessageBox.Show("MQ Exception: " + mqex.Message);
}
catch (Exception ex)
{
System.Windows.MessageBox.Show("Exception: " + ex.Message);
}
}
}
