[jboss-user] [Remoting] - The invoker for locator (InvokerLocator [socket://xx.xx.xx.

[sreepraveen_2000]

Hi All,

In my project we use remoting services to communicate between client and server. 

The server listens on a particular port say 5800, all the clients try to connect to server on that particular port giving their local port to communicate. (lets say local ports start from 5900 and increment by 1 for each client).

Clients try to query heart beat from server every 3 minutes to keep the connection alive and sync with the server every time server restarts.

The problem is during the restart of the server, not all the clients are able to connect back to the server, it is random some clients connect perfectly some clients throw below exception.


  | 
  | 2008-12-15 15:47:09,905 FATAL [com.xxxxx.datamodel.client.TransporterClients] The invoker for locator (InvokerLocator [socket://10.10.227.121:5901/?serializationtype=jboss]) is already in use by another Connector.  Either change the locator or add new handlers to existing Connector.
  | com.xxxxx.datamodel.DMException: The invoker for locator (InvokerLocator [socket://xx.xx.xxx.xxx:5901/?serializationtype=jboss]) is already in use by another Connector.  Either change the locator or add new handlers to existing Connector.
  |         at com.xxxxx.datamodel.client.TransporterClients.createServer(TransporterClients.java:171)
  |         at com.xxxxx.datamodel.client.TransporterClients.<init>(TransporterClients.java:59)
  |         at com.xxxxx.datamodel.client.DriverManager.<init>(DriverManager.java:17)
  |         at com.xxxxx.datamodel.client.remoting.ConnectionManager.init(ConnectionManager.java:44)
  |         at com.xxxxx.datamodel.client.remoting.ConnectionManager.<init>(ConnectionManager.java:39)
  |         at com.xxxxx.datamodel.client.remoting.ConnectionManagerHelper.getConnection(ConnectionManagerHelper.java:38)
  |         at com.xxxxx.datamodel.client.remoting.ConnectionManager.getConnectionManager(ConnectionManager.java:104)
  |         at com.xxxxx.sms.SMSCommunicationService.getRemoteSMSGatewayConnection(SMSCommunicationService.java:134)
  |         at com.xxxxx.sms.SMSCommunicationService.access$100(SMSCommunicationService.java:44)
  |         at com.xxxxx.sms.SMSCommunicationService$HeartBeatTask.run(SMSCommunicationService.java:160)
  |         at java.util.TimerThread.mainLoop(Timer.java:512)
  |         at java.util.TimerThread.run(Timer.java:462)
  | Caused by: org.jboss.remoting.InvalidConfigurationException: The invoker for locator (InvokerLocator [socket://10.10.227.121:5901/?serializationtype=jboss]) is already in use by another Connector.  Either ch
  | ange the locator or add new handlers to existing Connector.
  |         at org.jboss.remoting.InvokerRegistry.createServerInvoker(InvokerRegistry.java:519)
  |         at org.jboss.remoting.transport.Connector.init(Connector.java:396)
  |         at org.jboss.remoting.transport.Connector.create(Connector.java:782)
  |         at org.jboss.remoting.transporter.TransporterServer.getConnector(TransporterServer.java:163)
  |         at org.jboss.remoting.transporter.TransporterServer.<init>(TransporterServer.java:105)
  |         at org.jboss.remoting.transporter.TransporterServer.createTransporterServer(TransporterServer.java:292)
  |         at org.jboss.remoting.transporter.TransporterServer.createTransporterServer(TransporterServer.java:260)
  |         at org.jboss.remoting.transporter.TransporterServer.createTransporterServer(TransporterServer.java:502)
  |         at com.xxxxx.datamodel.client.TransporterClients.createServer(TransporterClients.java:168)
  |         ... 11 more
  | 
  | 

The code to establish client connection to server is given below.


  | TransporterClients(String pRmtURL, String pLclURL) throws DMException {
  | 		rmturl = pRmtURL+"/?serializationtype=jboss";
  | 		lclurl = getLocalURL(pLclURL);
  | 		logger.info("Remote URL: "+rmturl);
  | 		logger.info("Local URL: "+lclurl);
  | 		try {
  | 			manager = (com.xxxxx.datamodel.rmt.DriverManager) TransporterClient
  | 					.createTransporterClient(rmturl,
  | 							com.xxxxx.datamodel.rmt.DriverManager.class);
  | 			driver = (com.xxxxx.datamodel.rmt.Driver) TransporterClient
  | 					.createTransporterClient(rmturl,
  | 							com.xxxxx.datamodel.rmt.Driver.class);
  | 			connection = (com.xxxxx.datamodel.rmt.Connection) TransporterClient
  | 					.createTransporterClient(rmturl,
  | 							com.xxxxx.datamodel.rmt.Connection.class);
  | 			stmt = (com.xxxxx.datamodel.rmt.Statement) TransporterClient
  | 					.createTransporterClient(rmturl,
  | 							com.xxxxx.datamodel.rmt.Statement.class);
  | 			observerserver = new Observable();
  | 			observer = createServer(observerserver, com.xxxxx.datamodel.rmt.Observer.class.getName());
  | 		} catch (Exception e) {
  | 			logger.fatal(e.getLocalizedMessage(), e);
  | 			close();
  | 			throw new DMException(e);
  | 		}
  | 	}
  | 
  | 

The close method is given below.


  | 
  | void close() {
  | 		if(observer!=null)
  | 			observer.stop();
  | 		if(stmt!=null)
  | 			TransporterClient.destroyTransporterClient(stmt);
  | 		if(connection!=null)
  | 			TransporterClient.destroyTransporterClient(connection);
  | 		if(driver!=null)
  | 			TransporterClient.destroyTransporterClient(driver);
  | 		if(manager!=null)
  | 			TransporterClient.destroyTransporterClient(manager);
  | 	}
  | 
  | 

If there is any exception in the connection code it will try to close and try to recreate the connections in the next cycle.

I think the closing code is not releasing all the resources used by the client.

Any help would be greatly appreciated.

Thanks.

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