Starting an application using MSMQ from Windows service

[dom_perron]

Hi,

I have a problem when I try to start an application using MSMQ from a
Windows Service. The application runs on a server. The client send a
message to a public queue created on the server, the server process
the request and return the result to a public queue on the client.
All is working fine if I start my application directly on the server.
But we want to embed the start of the application into a Windows
service. When I install the service that I create for this, I use the
account LocalSystem. On the server, I add the users "SYSTEM" and
"NETWORK SERVICE" with full control on my message queue.

All it seems to be executed correctly, I log many events and
everything is executed without errors. The service start the process
and the process is intiliized correctly. The only problem that I have
is that I never receive messages into my application when it is
started from the Windows service. The message is in the Queue on the
server but the event ReceiveComplete d seems to never be called.

Did someone have any idea why a never receive the message???

Here is the code that I wrote to create the message queue on the
server side:

/////////////////////////////////////////////////////////////////////////

public MessageQueueMan ager()
{
string mesageQueueName =

System.Configur ation.Configura tionSettings.Ap pSettings["MessageQueueNa me"];
//Construct the path of the queue
string queuePath = ".\\mesageQueue Name";

MessageQueue messageQueue;
//Init the message queue
if (MessageQueue.E xists(queuePath ) == true)
{
// Yes, then create an object representing the
queue
messageQueue = new MessageQueue(qu euePath);
}
else
{
// No, create the queue and cache the returned
object
messageQueue = MessageQueue.Cr eate(queuePath) ;
}

// Create an array of types expected in the message
body
Type[] expectedTypes = new Type[] { typeof(string) };

messageQueue.Fo rmatter = new
XmlMessageForma tter(expectedTy pes);

messageQueue.Re ceiveCompleted += new
ReceiveComplete dEventHandler(m essageQueue_Rec eiveCompleted);

//Start the asynchronous receive operation.
IAsyncResult ar = messageQueue.Be ginReceive();
}

static void messageQueue_Re ceiveCompleted( object sender,
ReceiveComplete dEventArgs e)
{
// Cast the state object to MessageQueue
MessageQueue messageQueue = null;

try
{
messageQueue = (MessageQueue)s ender;

...
}
catch (Exception ee)
{
ErrorLogger.Ins tance.LogMessag e(EVENT_SRC,
EventLogEntryTy pe.Error, ee.Message, ee.StackTrace);
}
finally
{
if (messageQueue != null)
{
// Restart the asynchronous receive operation.
messageQueue.Be ginReceive();
}
}

}

/////////////////////////////////////////////////////////////////////////

Thanks
Dominique