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From "David Holroyd (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQNET-64) occasional exception in ActiveMQ.Dispatcher.Dequeue() : millisecondsTimeout must be either non-negative and less than or equal to Int32.MaxValue or -1.
Date Sun, 23 Sep 2007 15:31:24 GMT

    [ https://issues.apache.org/activemq/browse/AMQNET-64?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_40167
] 

David Holroyd commented on AMQNET-64:
-------------------------------------

So a cast from double to int appears to be the immediate problem.  Here's a naive workaround,

{noformat}
--- src/main/csharp/ActiveMQ/Dispatcher.cs      (revision 578465)
+++ src/main/csharp/ActiveMQ/Dispatcher.cs      (working copy)
@@ -127,8 +127,17 @@
 
             while (!bClosed && rc == null)
             {
-                if( !messageReceivedEventHandle.WaitOne((int)timeout.TotalMilliseconds, false)
)
+                int wait;
+                if (timeout.TotalMilliseconds > Int32.MaxValue)
                 {
+                                       wait = Int32.MaxValue;
+                }
+                               else
+                               {
+                                       wait = (int)timeout.TotalMilliseconds;
+                               }
+                if( !messageReceivedEventHandle.WaitOne(wait, false));
+                {
                     break;
                 }
                                lock (semaphore)
{noformat}

But when this codepath is hit, the test application doesn't recieve an error message.


(Feels as if the no-args version of Dequeue() would do better to pass a {{null}} timeout to
indicate 'wait forever', too.)

> occasional exception in ActiveMQ.Dispatcher.Dequeue() : millisecondsTimeout must be either
non-negative and less than or equal to Int32.MaxValue or -1.
> -------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQNET-64
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-64
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: ActiveMQ Client
>         Environment: .NET 2.0, Windows 2000 Server under VMware, https://svn.apache.org/repos/asf/activemq/activemq-dotnet/trunk
@ 578465
>            Reporter: David Holroyd
>            Assignee: James Strachan
>
> I tried a lightly modified version of the example code from http://activemq.apache.org/nms/nms.html
and find that every few invocations of the test program, I see the following exception, rather
than the normal 'Received message' output:
> {noformat}
> Unhandled Exception: System.ArgumentOutOfRangeException: Number must be either non-negative
and less than or equal to Int32.MaxValue or -1.
> Parameter name: millisecondsTimeout
>    at System.Threading.WaitHandle.WaitOne(Int32 millisecondsTimeout, Boolean exitContext)
>    at ActiveMQ.Dispatcher.Dequeue(TimeSpan timeout)
>    at ActiveMQ.Dispatcher.Dequeue()
>    at ActiveMQ.MessageConsumer.Receive()
>    at Test.Bridge.Main(String[] args)
> {noformat}
> The code in question is,
> {code:title=Bridge.cs}
> namespace Test {
> 	using System;
> 	using NMS;
> 	using ActiveMQ;
> 	public class Bridge {
> 		public static void Main(string[] args) {
> 			IConnectionFactory factory = new ConnectionFactory(new Uri("tcp://192.168.9.162:61616"));
> 			using (IConnection connection = factory.CreateConnection())
> 			{
> 			    Console.WriteLine("Created a connection!");
> 			    
> 			    ISession session = connection.CreateSession();
> 			    
> 			    IDestination destination = session.GetQueue("FOO.BAR");
> 			    Console.WriteLine("Using destination: " + destination);
> 			    
> 			    // lets create a consumer and producer
> 			    IMessageConsumer consumer = session.CreateConsumer(destination);
> 			    
> 			    IMessageProducer producer = session.CreateProducer(destination);
> 			    producer.Persistent = true;
> 			    
> 			    // lets send a message
> 			    ITextMessage request = session.CreateTextMessage("Hello World!");
> 			    request.NMSCorrelationID = "abc";
> 			    request.Properties["NMSXGroupID"] = "cheese";
> 			    request.Properties["myHeader"] = "James";
> 			    
> 			    producer.Send(request);
> 			    
> 			    // lets consume a message
> 			    ITextMessage message = (ITextMessage) consumer.Receive();
> 			    if (message == null)
> 			    {
> 				Console.WriteLine("No message received!");
> 			    }
> 			    else
> 			    {
> 				Console.WriteLine("Received message with ID:   " + message.NMSMessageId);
> 				Console.WriteLine("Received message with text: " + message.Text);
> 			    }
> 			}
> 		}
> 	}
> }
> {code}
> The C# code is talking to ActiveMQ 4.1.1 running on the Linux host (I'm using NMS within
VMware).
> I'll try to nose around the code and work out what's happening, but this is the first
time I've ever worked with C#.

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