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Date: Fri, 29 May 2009 13:18:51 -0700 (PDT)
From: "Timothy Bish (JIRA)" <jira+amqnet@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Commented: (AMQNET-152) Infinit exception at reconnect on
 Mono with failover transport.
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    [ https://issues.apache.org/activemq/browse/AMQNET-152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=51990#action_51990 ] 

Timothy Bish commented on AMQNET-152:
-------------------------------------

I'm able to reproduce this with Mono 2.2 and 2.4 using the latest trunk code.  I had to replace the Console.ReadKey with Console.Readline so that the program would stop exiting early on me while trying to kill the broker ( Mono seemed to interpret my mouse clicks as keypress events ). 

The code seems to behave ok if you startup without a broker running and connect once you start the broker.  If you startup with a broker running and then kill and restart the broker the reported error occurs.

> Infinit exception at reconnect on Mono with failover transport.
> ---------------------------------------------------------------
>
>                 Key: AMQNET-152
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-152
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: ActiveMQ Client
>         Environment: Mono 1.9.1 framework on both Windows/Linux system.
>            Reporter: Tomasz Wiczling
>            Assignee: Jim Gomes
>             Fix For: 1.1
>
>
> I'm testing failover transport on Mono.
> I've downloaded latest revision of ActiveMQ .Net project (rev. 752559).
> I've made tests on:
> - both Windows and Linux
> - Mono 1.9.1 and Mono 2.0
> - ActiveMQ 5.1 and ActiveMQ 5.2
> All test ended with an exception.
> I wrote simple program that was listening on topic.
> namespace IssueExample
> {
>         internal class ConsoleTracer : ITrace
>         {
>                 public bool IsDebugEnabled { get { return true; } }
>                 public bool IsInfoEnabled { get { return true; } }
>                 public bool IsWarnEnabled { get { return true; } }
>                 public bool IsErrorEnabled { get { return true; } }
>                 public bool IsFatalEnabled { get { return true; } }
>                 public void Debug(string message) { Console.WriteLine("DEBUG:" + message); }
>                 public void Info(string message) { Console.WriteLine("INFO:" + message); }
>                 public void Warn(string message) { Console.WriteLine("WARN:" + message); }
>                 public void Error(string message) { Console.WriteLine("ERROR:" + message); }
>                 public void Fatal(string message) { Console.WriteLine("FATAL:" + message); }
>         }
>         class Program
>         {
>                 public static void Main(string[] args)
>                 {
>                         if (args.Length < 2)
>                         {
>                                 Console.WriteLine("USAGE: IssueExample <AMQURI> <TOPIC_NAME>");
>                                 return;
>                         }
>                         Tracer.Trace = new ConsoleTracer();
>                         IConnectionFactory factory = new ConnectionFactory(args[0]);
>                         IConnection connection = factory.CreateConnection();
>                         ISession session = connection.CreateSession();
>                         IDestination destination = session.GetTopic(args[1]);
>                         IMessageConsumer consumer = session.CreateConsumer(destination);
>                         consumer.Listener += onMessage;
>                         connection.Start();
>                         Console.WriteLine("Successfully connected to Topic '" + args[1] + "' on '" + args[0] + "' - waiting Any Key to be pressed");
>                         Console.ReadKey();
>                         consumer.Close();
>                         connection.Dispose();
>                         Console.WriteLine("Connected and Disconnected successfully toTopic '" + args[1] + "' on '" + args[0] + "' - Press any key to terminate program.");
>                         Console.ReadKey();
>                 }
>                 private static void onMessage(IMessage msg)
>                 {
>                         Console.WriteLine("\tRECEIVING: " + msg);
>                 }
>         }
> }
> The test was made with execution:
> # mono IssueExample.exe failover:(tcp://localhost:61616) test.topic
> Program works fine till the test of reconnection.
> While the program is running I restart the AMQ server.
> For a while I get loop of:
> (...)
> DEBUG:Waiting 1280 ms before attempting connection.
> DEBUG:Attempting connect to: tcp://localhost:61616/
> DEBUG:Opening socket to: localhost on port: 61616
> DEBUG:Connect fail to: tcp://localhost:61616/, reason: System.Net.Sockets.SocketException: Connection refused
>   at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remote_end) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.Tcp.TcpTransportFactory.Connect (System.String host, Int32 port) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.Tcp.TcpTransportFactory.CompositeConnect (System.Uri location) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.TransportFactory.CompositeConnect (System.Uri location) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.Failover.FailoverTransport.doReconnect () [0x00000]
> (...)
> And it is OK, but ...
> When server resumes work, I get:
> (...)
> DEBUG:Waiting 20480 ms before attempting connection.
> DEBUG:Parsing type: 2 with: Apache.NMS.ActiveMQ.OpenWire.V2.BrokerInfoMarshaller
> DEBUG:Parsing type: 30 with: Apache.NMS.ActiveMQ.OpenWire.V2.ResponseMarshaller
> ERROR:Unknown response ID: 0 for response: Response[ CorrelationId=1 ]
> DEBUG:Parsing type: 10 with: Apache.NMS.ActiveMQ.OpenWire.V2.KeepAliveInfoMarshaller
> INFO:Keep alive message received.
> INFO:Waiting for transport to reconnect.
> DEBUG:Attempting connect to: tcp://localhost:61616/
> DEBUG:Opening socket to: localhost on port: 61616
> DEBUG:Parsing type: 1 with: Apache.NMS.ActiveMQ.OpenWire.V1.WireFormatInfoMarshaller
> DEBUG:Connect fail to: tcp://localhost:61616/, reason: System.InvalidCastException: Cannot cast from source type to destination type.
>   at System.Collections.Generic.Dictionary`2+ValueCollection[Apache.NMS.ActiveMQ.Commands.SessionId,Apache.NMS.ActiveMQ.State.SessionState].System.Collections.ICollection.CopyTo (System.Array array, Int32 index) [0x00000]
>   at System.Collections.ArrayList.InsertRange (Int32 index, ICollection c) [0x00000]
>   at System.Collections.ArrayList.AddRange (ICollection c) [0x00000]
>   at System.Collections.ArrayList..ctor (ICollection c) [0x00000]
>   at Apache.NMS.ActiveMQ.State.SynchronizedCollection`1[Apache.NMS.ActiveMQ.State.SessionState]..ctor (ICollection c) [0x00000]
>   at Apache.NMS.ActiveMQ.State.SynchronizedDictionary`2[Apache.NMS.ActiveMQ.Commands.SessionId,Apache.NMS.ActiveMQ.State.SessionState].get_Values () [0x00000]
>   at Apache.NMS.ActiveMQ.State.ConnectionState.get_SessionStates () [0x00000]
>   at Apache.NMS.ActiveMQ.State.ConnectionStateTracker.DoRestoreSessions (ITransport transport, Apache.NMS.ActiveMQ.State.ConnectionState connectionState) [0x00000]
>   at Apache.NMS.ActiveMQ.State.ConnectionStateTracker.DoRestore (ITransport transport) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.Failover.FailoverTransport.restoreTransport (ITransport t) [0x00000]
>   at Apache.NMS.ActiveMQ.Transport.Failover.FailoverTransport.doReconnect () [0x00000]
> (...)
> And this is permanent state.

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