APAR status
Closed as program error.
Error description
When a secure connection is established, some data (unrelated to the request) is transferred between the web server plugin and the application server during the SSL handshake. Timeout values this data transfer are based on the serveriotimeout setting but the serveriotimeoutretry value has no effect when a failure occurs. The data transfer during the handshake is part of the connection initialization and occurs before the actual request is forwarded to the application server. As such, if a failure occurs, the connection is retried based on connection failure criteria and the serveriotimeoutretry setting has no effect on the failure. It is treated as a connection failure and a new server is attempted.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: IBM WebSphere Application Server web * * server Plugin users * **************************************************************** * PROBLEM DESCRIPTION: The WebSphere Plugin module uses the * * serveriotimeout value during the SSL * * handshake of a connection creation. * **************************************************************** * RECOMMENDATION: * **************************************************************** When Plugin creates secure connection or an extended handshake, some data is transferred between the endpoints to negotiate connection details. During this process, Plugin uses the serveriotimeout value to wait for expected data. Since this data transfer occurs during the connection creation, Plugin always retries the request when a timeout occurs during this processing regardless of the serveriotimeoutretry value.
Problem conclusion
The data transfer during a SSL hanshake or Plugin's extended handshake is part of the connection setup and not dependent on application processing. As such, the connecttimeout value will now be used instead of the serveriotimeout. Previously, users could force Plugin to use the connecttimeout instead of the serveriotimeout during the SSL handshake and Plugin's extended handshake on Apache based web servers using the websphere-shorten-handshake described in apar PM94198. Plugin now uses the connecttimeout during the SSL handshake and Plugin's extended handshake. On Apache based web servers, the websphere-shorten-handshake can be set to 0 to revert back to using the serveriotimeout for these operations if desired. The fix for this APAR is targeted for inclusion in fix pack 8.5.5.24 and 9.0.5.17. For more information, see 'Recommended Updates for WebSphere Application Server': https://www.ibm.com/support/pages/node/715553
Temporary fix
Set websphere-shortened-handshake as described in PM94198
Comments
APAR Information
APAR number
PH54768
Reported component name
IBM HTTP SERVER
Reported component ID
5724J0801
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2023-05-26
Closed date
2023-06-22
Last modified date
2024-03-07
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
WEBSPHERE APP S
Fixed component ID
5724J0800
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]
Document Information
Modified date:
07 March 2024