PI81953: DFHWB0723 MESSAGE IN CICS AND 400 BAD REQUEST IS RETURNED TO CLIENT APPLICATION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CICS will return a 400 Bad Request response and issue a
  DFHWB0723 message when a request with a very long URI with a
  query string.
  When the length of the path on an inbound request to CICS is
  greater than 256 characters, before the '?' of the querystring,
  CICS will fail to find the matching generic URIMAP. This causes
  a DFHWB0723 message and a 400 Bad Request to be returned to the
  client.
  Additional Symptom(s) Search Keyword(s): KIXREVGJT
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CICS return an error response with      *
  *                      DFHWB0732 if a web request has a long   *
  *                      URI path with a query string following  *
  *                      it.                                     *
  ****************************************************************
  CICS is acting as an HTTP server and several URIMAPs have been
  installed. A web request with a very long URI path is coming.
  The CWXN task is attached and DFHWBUR is called to locate a
  matched URIMAP. When locating the URIMAP, CICS needs to find
  and remove the query string in the path of the URI.  However,
  only 256 bytes are searched at a time. If the path of the URI
  exceeds 255 characters and there is a query string following
  it, the query string can't be successfully removed. If this
  happens, CICS will fail to locate the matching URIMAP, which
  causes a DFHWB0723 message and an error response to be returned
  to the client.
  

Problem conclusion

• DFHWBUR has been changed to make sure the query string in the
  path of the URI can be properly located and removed.
  

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:

  UI49293 UI49294 UI49295

Modules/Macros

• DFHWBUR
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R000 PSY UI49294

     UP17/08/05 P F708

• R100 PSY UI49295

     UP17/08/05 P F708

• R900 PSY UI49293

     UP17/08/05 P F708

Fix is available

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