Hi,<div><br></div><div>I have RabbitMQ client code (I've reproduced the issue with just the sample consumer code from&nbsp;http://www.rabbitmq.com/tutorials/tutorial-one-java.html ) that works fine from one machine, but not from another (both attempting to connect to the same broker/server). The machine that fails to run this successfully is in a completely different location, with its own firewall rules, so the first obvious thing to check is connectivity to tcp port 5672 on the server machine, and I have confirmed (via both "telnet &lt;hostname&gt; 5672" and via a simple java program that runs&nbsp;<span style="font-family: Monaco; font-size: 11px; color: rgb(161, 0, 102); ">new</span><span style="font-family: Monaco; font-size: 11px; color: rgb(0, 0, 0); "> Socket(</span><span style="color: rgb(87, 0, 255); font-family: Monaco; font-size: 11px; ">"&lt;hostname&gt;"</span><span style="font-family: Monaco; font-size: 11px; color: rgb(0, 0, 0); ">, 5672)</span>&nbsp;) that basic connectivity works fine.</div><div><br></div><div>My exception stack trace is shown below.</div><div><br></div><div>Any suggestions for next steps?</div><div><br></div><div><div>Exception in thread "main" java.io.IOException</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:360)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:516)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:533)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at Recv.main(Recv.java:15)</div><div>Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; reason: java.net.SocketException: Connection reset</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:343)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:313)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>... 3 more</div><div>Caused by: java.net.SocketException: Connection reset</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at java.net.SocketInputStream.read(SocketInputStream.java:189)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at java.net.SocketInputStream.read(SocketInputStream.java:121)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at java.io.BufferedInputStream.read(BufferedInputStream.java:254)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:288)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:131)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:515)</div></div><div><br></div><div>Thanks,</div><div>Steve Leibman</div>