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<p class=MsoNormal><span style='color:#1F497D'>A restart of the server cleared
it up. No errors in the rabbitmq logs. Seems fishy. I had been running some
load tests on the server prior to it acting this way.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>--Steve<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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"'> Steve Haneman <br>
<b>Sent:</b> Thursday, October 14, 2010 2:13 PM<br>
<b>To:</b> rabbitmq-discuss@lists.rabbitmq.com<br>
<b>Subject:</b> connection.close() hangs<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>ubuntu-10.04.1-server-amd64<o:p></o:p></p>
<p class=MsoNormal>RabbitMQ 2.1.0, generic install<o:p></o:p></p>
<p class=MsoNormal>Java client: rabbitmq-java-client-bin-2.1.0<o:p></o:p></p>
<p class=MsoNormal>Java 1.5<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The following code hangs on conn.close(). Specifying a
timeout did not help. No issues when run on RabbitMQ 2.0.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>--Steve<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>package</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
com.bla.rabbit.test;</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>import</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
com.rabbitmq.client.Channel;</span><span style='font-size:10.0pt;font-family:
"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>import</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
com.rabbitmq.client.Connection;</span><span style='font-size:10.0pt;font-family:
"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>import</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> com.rabbitmq.client.ConnectionFactory;</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>import</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
com.rabbitmq.client.MessageProperties;</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>public</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>class</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> Small {</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F5FBF'>/**</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F5FBF'>*</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F9FBF'>@param</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F5FBF'>args</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New";color:#3F5FBF'>*/</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>static</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>void</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> main(String[]
args) {</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
String exchange = </span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"myexchangename"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>;</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
String queue = </span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"myqueuename"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>;</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
String route = </span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"myroutingkey"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>;</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
String msg = </span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"hello"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>;</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>byte</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>[]
messageBodyBytes = msg.getBytes();</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
ConnectionFactory factory = </span><b><span style='font-size:10.0pt;font-family:
"Courier New";color:#7F0055'>new</span></b><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> ConnectionFactory();</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
factory.setUsername(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"guest"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
factory.setPassword(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"guest"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
factory.setHost(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"127.0.0.1"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
factory.setVirtualHost(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"test"</span><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>);</span><span style='font-size:10.0pt;font-family:
"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
</span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>try</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> {</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
Connection conn = factory.newConnection();</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
Channel pushChannel = conn.createChannel();</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
pushChannel.exchangeDeclare(exchange, </span><span style='font-size:10.0pt;
font-family:"Courier New";color:#2A00FF'>"direct"</span><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>true</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
pushChannel.queueDeclare(queue, </span><b><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055'>true</span></b><span style='font-size:
10.0pt;font-family:"Courier New";color:black'>, </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>false</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>false</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>null</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
pushChannel.queueBind(queue, exchange, route);</span><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> </span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
System.</span><i><span style='font-size:10.0pt;font-family:"Courier New";
color:#0000C0'>out</span></i><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>.println(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"publish"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
pushChannel.basicPublish(exchange, route, </span><b><span style='font-size:
10.0pt;font-family:"Courier New";color:#7F0055'>true</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>, </span><b><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>true</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>,
MessageProperties.</span><i><span style='font-size:10.0pt;font-family:"Courier New";
color:#0000C0'>PERSISTENT_TEXT_PLAIN</span></i><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>, messageBodyBytes);</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> <o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
// we hang here</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
System.</span><i><span style='font-size:10.0pt;font-family:"Courier New";
color:#0000C0'>out</span></i><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>.println(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"start close"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
conn.close();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
System.</span><i><span style='font-size:10.0pt;font-family:"Courier New";
color:#0000C0'>out</span></i><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>.println(</span><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"end close"</span><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>);</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
} </span><b><span style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>catch</span></b><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> (Exception ex)
{</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
ex.printStackTrace();</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>
}</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> }</span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'>}</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
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