WebApp will not load - Failed to bind to server socket: nio://127.0.0.1:34455 due to: java.net.BindException: Address already in use
Article ID: 142588
Updated On:
Products
Issue/Introduction
The One-Click WebApp does not load. It stays at the "Loading icon". Attempting to
stop/restart the webtomcat does not correct this.
The following errors were seen in the $SPECROOT/webtomcat/bin/webswing.log
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2020-01-06 08:50:46,021 ERROR [main] (JmsServiceImpl.java:31) Failed to start JMS service.
java.io.IOException: Failed to bind to server socket: nio://127.0.0.1:34455 due to: java.net.BindException: Address already in use
at org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:34)
at org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:144)
at org.apache.activemq.transport.tcp.TcpTransportFactory.doBind(TcpTransportFactory.java:62)
at org.apache.activemq.transport.TransportFactorySupport.bind(TransportFactorySupport.java:40)
at org.apache.activemq.broker.BrokerService.createTransportConnector(BrokerService.java:2520)
at org.apache.activemq.broker.BrokerService.addConnector(BrokerService.java:339)
at org.apache.activemq.broker.BrokerService.addConnector(BrokerService.java:329)
at org.webswing.server.services.jms.JmsServiceImpl.startService(JmsServiceImpl.java:71)
at org.webswing.server.services.jms.JmsServiceImpl.start(JmsServiceImpl.java:29)
at org.webswing.server.services.startup.StartupServiceImpl.start(StartupServiceImpl.java:34)
at org.webswing.server.WebswingServlet.init(WebswingServlet.java:53)
~
~
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.activemq.transport.nio.NIOTransportFactory$2.createServerSocket(NIOTransportFactory.java:83)
at org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:141)
Environment
Spectrum 10.3.2
RedHat 7.x
Cause
For reasons unknown, there were multiple webtomcat processes running on the system. This also causes
issues with the JMS port WebSwing uses as the default port 34455 is in use.
[[email protected] ~]# ps -ef | grep 20038
caadmin 4706 20038 0 04:32 ? 00:01:39 /ca/spectrum/Java/jre/bin/java -Xbootclasspath/a:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-api-2.6-SNAPSHOT.jar:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-app-toolkit-java8-2.~~~~~
caadmin 5149 20038 0 04:36 ? 00:01:37 /ca/spectrum/Java/jre/bin/java -Xbootclasspath/a:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-api-2.6-SNAPSHOT.jar:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-app-toolkit-java8-2.~~~~~
caadmin 11343 20038 0 05:42 ? 00:01:28 /ca/spectrum/Java/jre/bin/java -Xbootclasspath/a:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-api-2.6-SNAPSHOT.jar:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-app-toolkit-java8-~~~~~~
caadmin 20038 20022 0 2019 ? 16:04:00 /ca/spectrum/Java/bin/java -Djava.util.logging.config.file=/ca/spectrum/webtomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webr~~~~~~~
caadmin 26911 20038 1 03:12 ? 00:08:40 /ca/spectrum/Java/jre/bin/java -Xbootclasspath/a:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-api-2.6-SNAPSHOT.jar:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-app-toolkit-java8-~~~~~~
caadmin 29002 20038 0 08:46 ? 00:00:52 /ca/spectrum/Java/jre/bin/java -Xbootclasspath/a:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-api-2.6-SNAPSHOT.jar:/ca/spectrum/webtomcat/bin/../webswing/tmp/release/WEB-INF_swing-boot_webswing-app-toolkit-java8-~~~~~
Resolution
- Kill all the java processes associated with the JMS port 34455
netstat -anp | grep 34455
kill -9 <java pid(s)>
- restart webtomcat as the spectrum owner
cd $SPECROOT/webtomcat.bin
./startWebTomcat.sh
Additional Information
Webswing uses JMS internally to send/receive events to/from the Application Sessions. The following
parameter can be added to the webtomcat to change the JMS port used by Web Swing
-Dwebswing.jmsUrl=nio://127.0.0.1:34456Reference: https://www.webswing.org/docs/20.1/faq/jvm_port.html
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