PK82794: ZERO BYTE CHUNK WAS SENT AND CHUNK TRANSFER ENDS SUCCESSFULLY, EVEN WHEN THE APPLICATION HAPPENS TO ERROR OUT.

Fixes are available

APAR status

Closed as program error.

Error description

Last zero byte chunk was sent following an error in the
application.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server version    *
*                  6.1 and 7.0 users                           *
****************************************************************
* PROBLEM DESCRIPTION: The last zero byte chunk is sent out    *
*                      in the chunked encoding transmission    *
*                      following an error in the application.  *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
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.

Problem conclusion

The WebContainer code was modified to suppress the last zero
byte chunk when there has been an exception in the
application.  A Webcontainer custom property needs to be set
for this to work:

com.ibm.ws.webcontainer.suppressLastZeroBytePackage =  true
(default is false)

Please refer to the following technote for instructions on
enabling WebContainer custom properties:
http://www.ibm.com/support/docview.wss?rss=180&uid=swg21284395
The fix for this APAR is currently targeted for inclusion in
fixpacks 6.1.0.27 and 7.0.0.7
Please refer to the recommended updates page for delivery
information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PK82794
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
61A
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-03-17
Closed date
2009-06-16
Last modified date
2009-06-16

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
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R61A PSY
UP
R61H PSY
UP
R61I PSY
UP
R61P PSY
UP
R61S PSY
UP
R61W PSY
UP
R61Z PSY
UP
R700 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.1","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 December 2021

Tips

PK82794: ZERO BYTE CHUNK WAS SENT AND CHUNK TRANSFER ENDS SUCCESSFULLY, EVEN WHEN THE APPLICATION HAPPENS TO ERROR OUT.

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R61A PSY

R61H PSY

R61I PSY

R61P PSY

R61S PSY

R61W PSY

R61Z PSY

R700 PSY

Document Information

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