PQ66334: REQUEST HEADER WITH PARM VALUE GREATER THAN 8190 FAILS WITH 400 ON 1ST REQUEST

A fix is available
WebSphere Application Server Version 3.5 Fix Pack 7 (3.5.7)

APAR

APAR status
Closed as program error.

Error description
When a request header is sent and the value length for one of
the parms exceeds 8190 the request will fail the 1st time with a
400 bad parm when request is on port 9080. The reason is the
buffer size is hardcoded at 8190 and if the request exceeds this
it wil lexpand the buffer by 8190 bytes. On the 1st request, thi
s expansion fails and causes a 400 error. On subsequent request,
 the default size is set to 16380 and will work until a size
exceeds 16380 and the buffer needs to expand again.
Local fix
Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server developers      *
*                 creating request header fields greater       *
*                 than 10K.                                    *
****************************************************************
* PROBLEM DESCRIPTION: WebSphere fails to handle request       *
*                      header fields greater than 10K for      *
*                      webservers that permit header fields    *
*                      greater than 8190 bytes.                *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
WebSphere defaulted to the apache limit of 8190 bytes
for a request header field (10K total for all headers).
This limitation would be encountered when dispatching
requests via the plugins and using a webserver other
than an apache based webserver. When using the internal
webserver, to process requests, after 8190 bytes were sent,
the initial 8190 bytes were not being sent to the
webcontainer.
Problem conclusion
To honor the limits for request header fields and total
request headers, WebSphere will expand the buffer capacity on
an as needed basis to accomodate large header fields.  This
expansion will allow WebSphere to handle any request header
field on any supported webserver implementation.
Temporary fix
Comments
APAR information
APAR numberPQ66334
Reported component nameWAS STANDARD NT
Reported component ID5648C8301
Reported release350
StatusCLOSED PER
PENoPE
HIPERNoHIPER
Submitted date2002-09-18
Closed date2002-09-18
Last modified date2002-09-18

APAR is sysrouted FROM one or more of the following:
PQ66085

APAR is sysrouted TO one or more of the following:APAR is sysrouted FROM one or more of the following:PQ66085


Modules/Macros
ENGINE
APAR is sysrouted TO one or more of the following:Modules/Macros

Fix information
Fixed component nameWAS STANDARD NT
Fixed component ID5648C8301

Applicable component levels
R350 PSYUP











Document Information

Product categories: Software, Application Servers, Distributed Application & Web Servers, WebSphere Application Server, General
Software version: 350
Reference #: PQ66334
IBM Group: Software Group
Modified date: 2002-09-18