PH29812: THE LAST ZERO BYTE CHUNK IS SENT OUT IN THE CHUNKED ENCODING TRANSMISSION FOLLOWING AN ERROR IN THE APPLICATION

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The last zero byte chunk is used to signal to a client that it
  is the end of the response data in the chunked encoding
  transmission.  Some applications are designed to utilize this
  last chunk as a way to determine if the response data is
  completely received before processing it.  If there is an
  error in the application after the response headers have been
  sent, it is not easy to convey this information to the client.
  The last chunk is still sent out.  The client can get and
  process the incomplete data without knowing it.
  
  This issue is described in GitHub issue 11847.
  More information can be found at the following link:
  http://github.com/openliberty/Open-Liberty
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of z/OS Liberty Embedded           *
  ****************************************************************
  * PROBLEM DESCRIPTION: The last zero byte chunk is sent out in *
  *                      the chunked encoding transmission       *
  *                      following an error in the application.  *
  ****************************************************************
  The last zero byte chunk is used to signal to a client that it
  is the end of the response data in the chunked encoding
  transmission.  Some applications are designed to utilize this
  last chunk as a way to determine if the response data is
  completely received before processing it.  If there is an
  error in the application after the response headers have been
  sent, it is not easy to convey this information to the client.
  The last chunk is still sent out.  The client can get and
  process the incomplete data without knowing it.
  This issue is described in GitHub issue 11847.
  More information can be
  found at the following link:
  http://github.com/openliberty/Open-Liberty
  

Problem conclusion

• Code was added to address the issue described
  in GitHub issue 11847.
  

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:

  UI71979

Modules/Macros

• BBL20009 BBLS2009
  

Fix information

• Fixed component name

  LIBERTY PROF -

• Fixed component ID

  5655W6514

Applicable component levels

• REM0 PSY UI71979

     UP20/10/13 P F010

Fix is available

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