Protecting it doesn't work. This is probably some part of the protocol so I
can't just make that change. Ok, I guess at this point I am stuck.
sparky2708 wrote:
>
> Did some more debugging and narrowed down the problem:
>
> in WireFormatNegotiator the "command" is sometimes "Null" -- not sure why
> it happens or how to fix it except to protect the following statement:
>
> protected override void OnCommand(ITransport sender, Command command)
> {
> if ( command.GetDataStructureType() ==
> WireFormatInfo.ID_WireFormatInfo )
> ...
> }
>
> Complete error message:
>
> System.NullReferenceException: Object reference not set to an instance of
> an object.
> at ActiveMQ.Transport.WireFormatNegotiator.OnCommand(ITransport sender,
> Command command) in
> D:\activemq-dotnet\activemq-dotnet\src\main\csharp\ActiveMQ\Transport\WireFormatNegotiator.cs:line
> 75
> at ActiveMQ.Transport.Tcp.TcpTransport.ReadLoop() in
> D:\activemq-dotnet\activemq-dotnet\src\main\csharp\ActiveMQ\Transport\Tcp\TcpTransport.cs:line
> 146
>
>
>
> sparky2708 wrote:
>>
>> Could there be something wrong with the C#/.NET release in the HEAD of
>> SVN? Shouldn't there be some stable tag or branch that I need to check
>> out?
>>
>>
>> sparky2708 wrote:
>>>
>>> A few days ago I checked out the latest C#/.NET code using svn as per
>>> the instructions on the website. 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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