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Date: Thu, 1 Feb 2007 07:25:51 -0800 (PST)
From: sparky2708 <daa82@columbia.edu>
To: activemq-dev@geronimo.apache.org
Subject: PLEASE HELP ASAP: C#/.NET implementation CRASHES on Connection
 Startup
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Sorry, for posting this twice but I wasn't sure where to post it. I posted
this in the "User" forum but didn't get a reply. If you could
please,please,please address this issue as I am completely stuck with the C#
NMS client. 

THE ISSUE:
A few days ago I checked out the latest C#/.NET code using svn as per the
instructions on the website. Revision: "Checked out revision 501459". I
built the code without any problems but am now trying to run it in VS2005.
>From the debugger it looks like the error occurs when I call
_connection.Start()  Here is my code: 

private IConnection _connection; 
private string JMS_URL = "tcp://localhost:61616"; 

public MessageManager() { 
        IConnectionFactory connectionFactory = new ConnectionFactory(new
Uri(JMS_URL)); 
        _connection = connectionFactory.CreateConnection(); 
        _connection.ExceptionListener += new
ExceptionListener(_connection_ExceptionListener); 
        _connection.Start(); 
} 

 void _connection_ExceptionListener(Exception exception) 
    { 
        Console.WriteLine("Received Exception from JMS: " + exception); 
    } 
        

In the console window I get: 

Received Exception from JMS: System.NullReferenceException: Object reference
not 
 set to an instance of an object. 
   at ActiveMQ.Transport.WireFormatNegotiator.OnCommand(ITransport sender,
Comma 
nd command) 
   at ActiveMQ.Transport.Tcp.TcpTransport.ReadLoop() 
Received Exception from JMS: System.NullReferenceException: Object reference
not 
 set to an instance of an object. 
   at ActiveMQ.Transport.WireFormatNegotiator.OnCommand(ITransport sender,
Comma 
nd command) 
   at ActiveMQ.Transport.Tcp.TcpTransport.ReadLoop() 
Received Exception from JMS: System.NullReferenceException: Object reference
not 
 set to an instance of an object. 
   at ActiveMQ.Transport.WireFormatNegotiator.OnCommand(ITransport sender,
Comma 
nd command) 
   at ActiveMQ.Transport.Tcp.TcpTransport.ReadLoop() 
Received Exception from JMS: System.NullReferenceException: Object reference
not 
 set to an instance of an object. 
   at ActiveMQ.Transport.WireFormatNegotiator.OnCommand(ITransport sender,
Comma 
nd command) 
   at ActiveMQ.Transport.Tcp.TcpTransport.ReadLoop() 

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