PK53569: SOCKET CONNECT EXCEPTIONS DURING META CALLBACKS

PK53569; 6.1.0.11: Socket connect exceptions during meta callbacks

APAR status

• Closed as program error.

Error description

• Error Message: org.omg.CORBA.TRANSIENT:
  java.net.ConnectException: Connection refused:
  connect:host=localHost,port=2954
  Stack Trace: Server side Exception
  
   org.omg.CORBA.TRANSIENT: java.net.ConnectException: Connection
  refused: connect:host=localHost,port=2954  vmcid: IBM  minor
  code: E02  completed: No
   at
  com.ibm.CORBA.transport.TransportConnectionBase.connect(Transpor
  tConnectionBase.java:450)
   at
  com.ibm.ws.orbimpl.transport.WSTransport.getConnection(WSTranspo
  rt.java:437)
   at
  com.ibm.CORBA.transport.TransportBase.getConnection(TransportBas
  e.java:162)
   at
  com.ibm.rmi.iiop.TransportManager.get(TransportManager.java:81)
   at com.ibm.rmi.iiop.GIOPImpl.locate(GIOPImpl.java:182)
   at
  com.ibm.rmi.corba.ClientDelegate.locate(ClientDelegate.java:1938
  )
   at
  com.ibm.rmi.corba.ClientDelegate._createRequest(ClientDelegate.j
  ava:1963)
   at
  com.ibm.rmi.corba.ClientDelegate.createRequest(ClientDelegate.ja
  va:1143)
   at
  com.ibm.rmi.corba.ClientDelegate.createRequest(ClientDelegate.ja
  va:1225)
   at
  com.ibm.CORBA.iiop.ClientDelegate.createRequest(ClientDelegate.j
  ava:1287)
   at
  com.ibm.rmi.corba.ClientDelegate.createRequest(ClientDelegate.ja
  va:1121)
   at
  com.ibm.CORBA.iiop.ClientDelegate.createRequest(ClientDelegate.j
  ava:1253)
   at
  com.ibm.rmi.corba.ClientDelegate.request(ClientDelegate.java:184
  1)
   at
  com.ibm.CORBA.iiop.ClientDelegate.request(ClientDelegate.java:12
  09)
   at
  org.omg.CORBA.portable.ObjectImpl._request(ObjectImpl.java:460)
   at
  com.ibm.org.omg.SendingContext._CodeBaseStub.meta(_CodeBaseStub.
  java:115)
   at
  com.ibm.rmi.iiop.FVDCodeBaseDelegate.meta(FVDCodeBaseDelegate.ja
  va:145)
   at
  com.ibm.rmi.io.IIOPInputStream.inputObjectFVD(IIOPInputStream.ja
  va:1407)
   at
  com.ibm.rmi.io.IIOPInputStream.readSerializable(IIOPInputStream.
  java:1032)
   at
  com.ibm.rmi.io.IIOPInputStream.simpleReadObjectInternal(IIOPInpu
  tStream.java:317)
   at
  com.ibm.rmi.io.IIOPInputStream.simpleReadObject(IIOPInputStream.
  java:347)
   at
  com.ibm.rmi.io.ValueHandlerImpl.readValue(ValueHandlerImpl.java:
  200)
   at
  com.ibm.rmi.iiop.CDRInputStream.read_value(CDRInputStream.java:1
  961)
   at
  com.ibm.tws.conn.engine._EJSRemoteStatelessConnEngine_da67e2e1_T
  ie.getEngineInfo(_EJSRemoteStatelessConnEngine_da67e2e1_Tie.java
  :157)
   at
  com.ibm.tws.conn.engine._EJSRemoteStatelessConnEngine_da67e2e1_T
  ie._invoke(_EJSRemoteStatelessConnEngine_da67e2e1_Tie.java:89)
   at
  com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDe
  legate.java:610)
   at
  com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:4
  63)
   at com.ibm.rmi.iiop.ORB.process(ORB.java:439)
   at com.ibm.CORBA.iiop.ORB.process(ORB.java:1737)
   at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2350)
   at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2195)
   at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:65)
   at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:95)
   at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1470)
  Caused by: java.net.ConnectException: Connection refused:
  connect
   at java.net.PlainSocketImpl.socketConnect(Native Method)
   at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:336)
   at
  java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:2
  01)
   at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:188)
   at java.net.Socket.connect(Socket.java:478)
   at java.net.Socket.connect(Socket.java:428)
   at java.net.Socket.<init>(Socket.java:335)
   at java.net.Socket.<init>(Socket.java:150)
   at
  com.ibm.ws.orbimpl.transport.WSTCPTransportConnection.createSock
  et(WSTCPTransportConnection.java:308)
   at
  com.ibm.CORBA.transport.TransportConnectionBase.connect(Transpor
  tConnectionBase.java:376)
   ... 33 more
  Client Side Exception
  Trace from server: 1198777258 at host
  fmossot5.dyn.webahead.ibm.com >>
  org.omg.CORBA.MARSHAL: Unable to read value from underlying
  bridge : initial and forwarded IOR inaccessible  vmcid: IBM
  minor code: 89A  completed: No
   at
  com.ibm.rmi.iiop.CDRInputStream.read_value(CDRInputStream.java:1
  968)
   at
  com.ibm.tws.conn.engine._EJSRemoteStatelessConnEngine_da67e2e1_T
  ie.getEngineInfo(_EJSRemoteStatelessConnEngine_da67e2e1_Tie.java
  :157)
   at
  com.ibm.tws.conn.engine._EJSRemoteStatelessConnEngine_da67e2e1_T
  ie._invoke(_EJSRemoteStatelessConnEngine_da67e2e1_Tie.java:89)
   at
  com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDe
  legate.java:610)
   at
  com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:4
  63)
   at com.ibm.rmi.iiop.ORB.process(ORB.java:439)
   at com.ibm.CORBA.iiop.ORB.process(ORB.java:1737)
   at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2350)
   at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2195)
   at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:65)
   at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:95)
   at
  com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled
  Code))
  <<  END server: 1198777258 at host fmossot5.dyn.webahead.ibm.com
  .
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IBM WebSphere Application Server version     *
  *                 6.1 users                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Socket connect exceptions during meta   *
  *                      callbacks                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem is seen when a class be passed as a argument or
  return value during rmi-iiop communication has a structural
  differences on client and server sides.  In this case the server
  will call back the client or vice versa to obtain the meta
  information about the class.
  This can result is a new connection being created by server back
  to the client.
  When there is a firewall running on the client machine it will
  block the incoming connection.
  There are problems seen when the client is running on a VPN
  connection.
  The problem can even happen if the com.ibm.CORBA.LocalHost
  property is set to an unreachable address on the client side.
  

Problem conclusion

• This defect will be fixed in:
  5.0.0 SR6
  1.4.2 SR9
  .
  The client can specify the com.ibm.CORBA.enableClientCallbacks
  property so that some additional context information would be
  included in the SendingContextRuntime IOR which is used for
  callbacks. The Server will understand this context and will use
  the same incoming connection to make outgoing meta callbacks.
  For this to work this apar is required to be installed on both
  client as well as the server side.
  .
  To obtain the fix:
  Install build 20070525 or later
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PK45745

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• SDK
  

Fix information

• Fixed component name

  WEBSPH APP SERV

• Fixed component ID

  5724J0800

Applicable component levels

• R61A PSY

     UP

• R61H PSY

     UP

• R61I PSY

     UP

• R61P PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP