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[Urgent] Random org.jboss.remoting.CannotConnectException
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created by <a href="http://community.jboss.org/people/aolias">Alfonso Olias</a> in <i>JBoss Remoting</i> - <a href="http://community.jboss.org/message/563013#563013">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>We are running a Client/Server Application were there is a server receiving incoming remote requests. Everything works ok until we double the number of clients (workers).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Then we start having this exception stack trace in some workers when they call remotely the server (master). We have implemented a retry mechanism that catches this error and tries to send the data 10 times, with random delays and also re-starting the transport.  But none of the failover mechanisms work.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><p>org.jboss.remoting.CannotConnectException: Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://xxxxxxxxxxxxx.xxxxx.xxx:9003/?serializationtype=jboss]</p><p>        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:831)</p><p>        at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:167)</p><p>        at org.jboss.remoting.Client.invoke(Client.java:2034)</p><p>        at org.jboss.remoting.Client.invoke(Client.java:877)</p><p>        at org.jboss.remoting.Client.invoke(Client.java:865)</p><p>        at org.jboss.remoting.transporter.TransporterClient.invoke(TransporterClient.java:321)</p><p>        at $Proxy15.isReady(Unknown Source)</p><p>Caused by: java.net.ConnectException: Connection refused</p><p>        at java.net.PlainSocketImpl.socketConnect(Native Method)</p><p>        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)</p><p>        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)</p><p>        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)</p><p>        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)</p><p>        at java.net.Socket.connect(Socket.java:519)</p><p>        at org.jboss.remoting.transport.socket.SocketClientInvoker.connect(SocketClientInvoker.java:293)</p><p>        at org.jboss.remoting.transport.socket.SocketClientInvoker.createSocket(SocketClientInvoker.java:210)</p><p>        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.getConnection(MicroSocketClientInvoker.java:1165)</p><p>        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:816)</p><p>        ... 10 more</p><div> </div><div>We are using the following libraries</div><div><div><dependency org="org.jboss.remoting" name="jboss-remoting" rev="2.5.3.SP1" /></div><div><dependency org="jboss" name="jboss-serialization" rev="1.0.3.GA" /></div><div><dependency org="org.jboss" name="jboss-common-core" rev="2.2.14.GA"></div><div>            <exclude module="commons-httpclient"/></div><div></dependency></div><div><dependency org="jboss" name="jboss-logging-spi" rev="2.0.3.GA" /></div><div><dependency org="jboss" name="jboss-concurrent" rev="1.0" /> </div><div><dependency org="jboss" name="jboss-jmx" rev="4.0.4" /> </div><div><dependency org="trove" name="trove" rev="2.0.4" /></div></div></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The way we start the server is like this</p><p> this.transporter = TransporterServer.createTransporterServer("socket://"+this.hostname + ":"+ port + "/?serializationtype=jboss", this, this.serverName);</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>And at the client side</p><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">org.jboss.remoting.CannotConnectException: Can not get connection to server. Problem establishing socket connection for InvokerLocator [socket://gaials48.n1data.lan:9003/?serializationtype=jboss]</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:831)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:167)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.Client.invoke(Client.java:2034)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.Client.invoke(Client.java:877)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.Client.invoke(Client.java:865)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transporter.TransporterClient.invoke(TransporterClient.java:321)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at $Proxy15.isReady(Unknown Source)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at gaia.cu3.agis.algo.gis.DistributedUpdateCalculatorServerProxy.send2Server(DistributedUpdateCalculatorServerProxy.java:255)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at gaia.cu3.agis.algo.gis.attitude.DistributedAttitudeUpdateCalculatorServerProxy.access$100(DistributedAttitudeUpdateCalculatorServerProxy.java:73)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at gaia.cu3.agis.algo.gis.attitude.DistributedAttitudeUpdateCalculatorServerProxy$1.run(DistributedAttitudeUpdateCalculatorServerProxy.java:242)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.lang.Thread.run(Thread.java:619)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Caused by: java.net.ConnectException: Connection refused</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.PlainSocketImpl.socketConnect(Native Method)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at java.net.Socket.connect(Socket.java:519)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transport.socket.SocketClientInvoker.connect(SocketClientInvoker.java:293)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transport.socket.SocketClientInvoker.createSocket(SocketClientInvoker.java:210)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.getConnection(MicroSocketClientInvoker.java:1165)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:816)</div><div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">        ... 10 more</div><div> </div><p> updateServer = (T) TransporterClient.createTransporterClient("socket://"+hostName+":" + port + "/?serializationtype=jboss", this.myClass);</p></div>
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