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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks Tim for the guidance on sendstring and singleget.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Next question is:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">C:\Program Files (x86)\RabbitMQ Server\rabbitmq_server-3.1.5\sbin>rabbitmqctl list_queues<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Listing queues ...<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Error: unable to connect to node rabbitmqctl1765387@2UA0480ZK0: nodedown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">DIAGNOSTICS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">===========<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">nodes in question: [rabbitmqctl1765387@2UA0480ZK0]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">hosts, their running nodes and ports:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">- 2UA0480ZK0: [{rabbit,65201},{rabbitmqctl572059,56762}]<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">current node details:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">- node name: rabbitmqctl572059@2UA0480ZK0<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">- home dir: F:\<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">- cookie hash: WS55vwJzesUiy9buyfOeTw==<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Please advise.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> rabbitmq-discuss-bounces@lists.rabbitmq.com [mailto:rabbitmq-discuss-bounces@lists.rabbitmq.com]
<b>On Behalf Of </b>Tim Watson<br>
<b>Sent:</b> Tuesday, September 10, 2013 4:54 AM<br>
<b>To:</b> Discussions about RabbitMQ<br>
<b>Subject:</b> Re: [rabbitmq-discuss] Questions about running .NET binaries SendString.exe, SingleGet.exe, rabbitmqclt.bat<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On 9 Sep 2013, at 19:29, Li, Mike wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span class="apple-style-span"><span style="font-size:11.5pt;font-family:"Calibri","sans-serif"">I was able to complete <a href="http://www.rabbitmq.com/tutorials/tutorial-one-python.html">http://www.rabbitmq.com/tutorials/tutorial-one-python.html</a> to
tutorial-three-phython.html</span></span><span class="apple-style-span"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">When I tried using SendString and SingleGet .NET binaries, and rabbitmqctl.bat I net getting much luck.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Have you tried writing code similar to the python tutorial using the .NET client? Looking at <a href="https://github.com/rabbitmq/rabbitmq-tutorials/tree/master/dotnet">https://github.com/rabbitmq/rabbitmq-tutorials/tree/master/dotnet</a>
might help, though that's probably very out of date.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">But no message in the hello queue found.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Well indeed - queues are not magically created for you, you've got to declare them either in your code or using one of the various management tools.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Manually added message via Queue > hello > Publish message (and added messages using steps in tutorial-one-python.html)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">That's one way to do it.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Tried getting the message failed also:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">c:\RabbitMQ.NetClient\bin>singleget "<a href="amqp://guest:guest@127.0.0.1:5672/">amqp://guest:guest@127.0.0.1:5672/</a>" hello<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The reason for the the failure is tucked away in the exception message here:<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-size:11.5pt;font-family:"Calibri","sans-serif"">text="PRECONDITION_FAILED - parameters for queue 'hello' in vhost '/' not equ</span></span><span class="apple-style-span"><span style="font-size:11.5pt;font-family:"Calibri","sans-serif"">ivalent"</span></span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Before singleget attempts to issue a basic.get, it declares the target queue - using queue.declare - to ensure it's present. This is fine, since queue.declare is idempotent - if the queue already exists, the declaration acts like an assertion,
otherwise it creates the queue. As you can see below, the code in SingleGet that declares the queue makes very specific assumptions about parameters:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> using (IModel ch = conn.CreateModel()) {<o:p></o:p></p>
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<p class="MsoNormal"> conn.AutoClose = true;<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> ch.QueueDeclare(queueName, false, false, false, null);<o:p></o:p></p>
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<p class="MsoNormal"> BasicGetResult result = ch.BasicGet(queueName, false);<o:p></o:p></p>
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<p class="MsoNormal"> if (result == null) {<o:p></o:p></p>
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<p class="MsoNormal"> Console.WriteLine("No message available.");<o:p></o:p></p>
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<p class="MsoNormal"> } else {<o:p></o:p></p>
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<p class="MsoNormal"> ch.BasicAck(result.DeliveryTag, false);<o:p></o:p></p>
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<p class="MsoNormal"> Console.WriteLine("Message:");<o:p></o:p></p>
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<p class="MsoNormal"> DebugUtil.DumpProperties(result, Console.Out, 0);<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> return 0;<o:p></o:p></p>
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<p class="MsoNormal"> }<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">So at the time that queue.declare method is issued to the server, if the queue that you manually created on the server was configured with *different* parameters, the queue.declare method will fail and a channel error will be raised, invalidating
the channel and throwing an exception in the client.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Please advise.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Make sure that the queue you're consuming via SingleGet was declared with exactly these same parameters. Alternatively, write you own code to consume messages from the queue, and ensure that when calling the channel's QueueDeclare method,
you provide the same parameters that the queue was originally declared/created with.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Tim<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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