PK84862: AIX-JDKIS NOT RETURING THE CORRECT MESSAGE FOR SOCKET EXCEPTION

APAR status

• Closed as program error.

Error description

• Error Message: This issue is reported on AIX-JDK-142.
  Problem Scenario:
  In any java application if we try to set any option (like
  TCP_NODELAY) for the socket fd which is already close
  (PreClose() or Dup) then JVM will throw following exception:
  Exception in thread "main" java.net.SocketException: A system
  call received a parameter that is not valid.
          at java.net.PlainSocketImpl.socketSetOption(Native
  Method)
          at
  java.net.PlainSocketImpl.setOption(PlainSocketImpl.java:292)
          at java.net.Socket.setTcpNoDelay(Socket.java:805)
          at Foo.main(Foo.java:40)
  But this exception says that parameter pass to the
  socketSetOption() is not valid, but actual scenario is of socket
  reset, which can create a confusion for user and is not
  directing them to the correct direction to diagnose the problem.
  .
  Stack Trace: N/A
  .
  

Local fix

• We changed this exception error message according to the
  IEEE-Open Group Base Specifications for setsockopt() subroutine
  (AIX API adhere to these specifications).
  
  http://www.opengroup.org/onlinepubs/009695399/functions/setsocko
  pt.html
  After making the changes in JVM is will show following exception
  message:
  Exception in thread "main" java.net.SocketException: The
  specified  option is invalid at the specified socket level or
  the socket has been shut down.
  This message gives the pretty much clear idea on the possible
  reason of failure which can direct customer to the correct
  direction to diagnose the failure. So I modified the code
  accordingly so that it should throw the correct message to the
  user.
  

Problem summary

• AIX-JDK is not returning the correct message for socket
  exception.
  

Problem conclusion

• This defect will be fixed in:
  1.4.2 SR13-1 (AIX)
  .
  JDK-CL code is updated so that it must return the correct
  message for socket exception.
  .
  To obtain the fix:
  Install build 20090525 or later
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  JAVA(1.3/1.4 CO

• Fixed component ID

  5648C9800

Applicable component levels

• R42A PSN

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