/// <summary>
/// Control with Callback, connects to the end point address and waits for notifications.
/// See also http://www.codeproject.com/Articles/39143/C-WCF-Client-Server-without-HTTP-with-Callbacks-Ma
/// </summary>
/// <param name="endPointAddress">Server end point address.</param>
/// <param name="adr">Zone Address to monitor.</param>
private static void ControlWithCallback(EndpointAddress endPointAddress, Address adr)
{
Console.WriteLine(">>> Setup M&C server ...");
ILog _log = LogManager.GetCurrentClassLogger();
IMonitorAndControl pipeProxy = null;
IMonitorAndControlNotification serverCallback = new ServerCallback();
try
{
int port = FindPort();
var binding = new WSDualHttpBinding("WSDualHttpBinding_IMonitorAndControl");
binding.ClientBaseAddress = new Uri("http://" + NetworkHelper.getHostName() + ":" + port + "/");
/*note the "DuplexChannelFactory". This is necessary for Callbacks.
* A regular "ChannelFactory" won't work with callbacks.*/
DuplexChannelFactory <IMonitorAndControl> pipeFactory =
new DuplexChannelFactory <IMonitorAndControl>(
new InstanceContext(serverCallback), binding, endPointAddress);
try
{
Console.WriteLine(">>> creating channel to {0} with callback address {1}", endPointAddress.Uri.ToString(), binding.ClientBaseAddress.ToString());
//Open the channel to the server
pipeProxy = pipeFactory.CreateChannel();
pipeProxy.Connect();
// Get zone status
pipeProxy.Monitor(adr);
// Listen to changes ...
int iSecTimeout = 60;
Console.WriteLine(">>> Wait {0} seconds, and listen to notifications!", iSecTimeout);
System.Threading.Thread.Sleep(iSecTimeout * 1000);
Console.WriteLine(">>> Stop listening ....");
pipeProxy.RemoveMonitor(adr);
}
catch (Exception e)
{
Console.WriteLine("ControlWithCallback - Exception: {0}", e.Message);
_log.Fatal(m => m("ControlWithCallback - Exception: {0}", e.Message));
}
}
catch (FaultException <ArgumentException> exc)
{
Console.WriteLine("ControlWithCallback - FaultException: {0}", exc);
_log.Fatal(m => m("ControlWithCallback - FaultException: {0}", exc));
}
catch (Exception exc)
{
Console.WriteLine("ControlWithCallback - Exception: {0}", exc);
_log.Fatal(m => m("ControlWithCallback - Exception: {0}", exc));
}
}
/// <summary>
/// Removes a monitor for a zone. (Unubscribes for zone state changes.)
/// </summary>
/// <param name="zoneId">Address of the zone.</param>
/// <param name="subscriber">The subscriber.</param>
public void RemoveMonitor(Address zoneId, ZoneNotification subscriber)
{
_log.Trace(m => m(String.Format("M&C Proxy; RemoveMonitor(); Address: {0}", zoneId)));
try
{
if (_zoneSubscriptions.ContainsKey(zoneId) == false)
{
return;
}
if (_zoneSubscriptions[zoneId].RemoveSubscriber(subscriber) == 0)
{
_mcServiceProxy.RemoveMonitor(zoneId);
_zoneSubscriptions.Remove(zoneId);
}
}
catch (Exception exc)
{
_log.Warn("Failed to unsubscribe for the zone.", exc);
}
}