PQ63643: IHS PLUGIN FOR WEBSPHERE DOES NOT HANDLE POST/GET FOR VERY LARGEDATA (60 MB & UP). "READING FROM IHS -1"ERROR IN NATIVE.LOG

 A fix is available

4.0.5: WebSphere Application Server Version 4.0 Fix Pack 5 (Version 4.0.5)



APAR status
Closed as program error.

Error description
This plugin related problem and it occurs for very large POST
data because the plugin currently allocates a large buffer to
store thecontent in.  If the content is so large that it causes
the malloc() to fail we don't handle that correctly and the
request fails.  A change needs to be made to the plugin so that
for large amounts of content we allocate a smaller buffer and
read a chunk/write a chunk until all content is successfully
passed to the app server.
Local fix
The workaround may be to send http request to embedded IHS
server but for most customers this workaround will not be
acceptable.(Most of them use standalone WebServer).
Problem summary
****************************************************************
* USERS AFFECTED: WebSphere Application Server version 4.0     *
*                 users of the webserver plugins.              *
****************************************************************
* PROBLEM DESCRIPTION: POST requests with very large request   *
*                      content(>70 meg) would fail when being  *
*                      sent to the plugin.                     *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The plugin would fail to allocate the buffer to read the
request content into when content-length was set to a very
large value(>70 meg).  As a result the request processing
would fail.
Problem conclusion
The plugin was modified so that when the request content
is greater than a certain size it will read a chunk and
write a chunk until all the content is read.
Temporary fix
The efix has been provided to the customer and we are awaiting
confirmation that it worked.
Comments
APAR information
APAR number PQ63643
Reported component name WEBSPHERE AE AI
Reported component ID 5630A2200
Reported release 400
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Submitted date 2002-07-29
Closed date 2002-09-25
Last modified date 2002-09-25

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
PLUGIN          

SRLS

Fix information
Fixed component name WEBSPHERE AE AI
Fixed component ID 5630A2200

Applicable component levels
R400 PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 400
Software edition:
Reference #: PQ63643
IBM Group: Software Group
Modified date: Sep 25, 2002