[KARAF-1574] When two karaf containers are started locally, an exception is displayed at startup. A nicer message would be better.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2.7
• Fix Version/s: 2.2.9, 2.3.0, 3.0.0
• Assignee: Freeman Yue Fang
• Reporter: Guillaume Nodet
• Created: 22/Jun/12 07:00
• Updated: 17/Dec/12 10:44
• Resolved: 08/Aug/12 00:09

Description

gnodet:~/work/apps/apache-karaf-2.2.8$ bin/karaf 
Exception in thread "JMX Connector Thread [service:jmx:rmi://0.0.0.0:44444/jndi/rmi://0.0.0.0:1099/karaf-root]" java.lang.RuntimeException: Could not start JMX connector server
	at org.apache.karaf.management.ConnectorServerFactory$1.run(ConnectorServerFactory.java:233)
Caused by: java.rmi.server.ExportException: Port already in use: 44444; nested exception is: 
	java.net.BindException: Address already in use
	at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:310)
	at sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:218)
	at sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:393)
	at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:129)
	at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:188)
	at java.rmi.server.UnicastRemoteObject.exportObject(UnicastRemoteObject.java:293)
	at java.rmi.server.UnicastRemoteObject.exportObject(UnicastRemoteObject.java:256)
	at javax.management.remote.rmi.RMIJRMPServerImpl.export(RMIJRMPServerImpl.java:82)
	at javax.management.remote.rmi.RMIJRMPServerImpl.export(RMIJRMPServerImpl.java:75)
	at javax.management.remote.rmi.RMIConnectorServer.start(RMIConnectorServer.java:388)
	at org.apache.karaf.management.ConnectorServerFactory$1.run(ConnectorServerFactory.java:231)
Caused by: java.net.BindException: Address already in use
	at java.net.PlainSocketImpl.socketBind(Native Method)
	at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:383)
	at java.net.ServerSocket.bind(ServerSocket.java:328)
	at java.net.ServerSocket.<init>(ServerSocket.java:194)
	at java.net.ServerSocket.<init>(ServerSocket.java:106)
	at sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(RMIDirectSocketFactory.java:27)
	at sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(RMIMasterSocketFactory.java:333)
	at sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(TCPEndpoint.java:649)
	at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:299)
	... 10 more
        __ __                  ____      
       / //_/____ __________ _/ __/      
      / ,<  / __ `/ ___/ __ `/ /_        
     / /| |/ /_/ / /  / /_/ / __/        
    /_/ |_|\__,_/_/   \__,_/_/         

  Apache Karaf (2.2.8)

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or 'osgi:shutdown' to shutdown Karaf.

karaf@root> 

Catching this exception and displaying a nicer and more informative message would be a good idea.