PI08041: TCP/HTTP PROXY GOES INTO A LOOP WHEN RECEIVING A REQUEST FOR ITSELF

Rational Test Virtualization Server Fix Pack 2 (8.5.1.2) for 8.5.1
Rational Performance Test Server Fix Pack 2 (8.5.1.2) for 8.5.1
Rational Integration Tester Fix Pack 2 (8.5.1.2) for 8.5.1
Rational Test Virtualization Server Fix Pack 3 (8.5.1.3) for 8.5.1
Rational Integration Tester Fix Pack 3 (8.5.1.3) for 8.5.1
Rational Integration Tester Fix Pack 4 (8.5.1.4) for 8.5.1
Rational Test Virtualization Server Fix Pack 4 (8.5.1.4) for 8.5.1
Rational Performance Test Server Fix Pack 5 (8.5.1.5) for 8.5.1
Rational Test Virtualization Server Fix Pack 5 (8.5.1.5) for 8.5.1
Rational Integration Tester Fix Pack 5 (8.5.1.5) for 8.5.1
Rational Performance Test Server Fix Pack 3 (8.5.1.3) for 8.5.1
Rational Performance Test Server Fix Pack 4 (8.5.1.4) for 8.5.1

APAR status

• Closed as program error.

Error description

• The Proxy Agent in IBM Rational Integration Tester Platform Pack
  (RIT-Platform) goes into a runaway condition if it receives a
  request with its own IP address and listen port.
  
  Many errors are logged in its JVM console, for example:
  
  java.net.SocketException: Socket is closed
  
  com.predic8.membrane.core.util.EndOfStreamException: read byte
  -1:
  
  STEPS TO REPRODUCE:
  
  1. Start the Proxy
  2. Create an HTTP transport in RIT that has the Host and Port of
  the Proxy (Settings tab)
  3. Click Test Transport
  
  EXPECTED RESULT:
  
  The Proxy ignores the request and logs a warning.
  
  ACTUAL RESULT:
  
  The Proxy loops the message back to itself until it runs out of
  memory or TCP sockets.
  

Local fix

• Re-start the Proxy
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of the Rational Integration Tester HTTP Proxy      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * If the RIT HTTP proxy receives a request with its own URL as *
  * the endpoint, then it will honor that request and enter into *
  * a loop that will eventually cause the proxy to crash.  Users *
  * will typically see this if they configure an HTTP transport  *
  * such that the host/port on the physical transport on the     *
  * settings tab is the host/port that the HTTP proxy is         *
  * configured to listen on.  Clicking Test Transport will then  *
  * cause the proxy to loop and fail.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Users who are affected by this problem should upgrade to     *
  * Rational Integration Tester 8.5.1.2                          *
  ****************************************************************
  

Problem conclusion

• In Rational Integration Tester 8.5.1.2, the proxy reports the
  problem and does not forward the message, preventing the loop
  from occurring.
  

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

  RATL INTEGRA TE

• Fixed component ID

  5725G79IT

Applicable component levels

• R851 PSY

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