A fix is available
APAR status
Closed as program error.
Error description
You are receiving many DFHWB0732 messages. DFHWB0732 CWXN CICS WEB ATTACH PROCESSING ENCOUNTERED A SOCKETS I/O ERROR WHILE RECEIVING A CLIENT REQUEST. HOST IP ADDRESS: xxx.xxx.xxx.xxx CLIENT IP ADDRESS: yyy.yyy.yyy.yyy TCPIPSERVICE: zzzzzzz . The trace shows the following exception entry: SYSTEM_SSL_ERROR GSK_RESPONSE(GSK_ERR_CONNECTION_CLOSED) FUNCTION(SECURE_SOC_INIT) RESPONSE(EXCEPTION) REASON(CONNECTION_CLOSED) GSK_RETURN_CODE(1B5)CIPHER_SELECTED() . Further analysis, found that DFHSOSE only has code to detect GSK_ERR_SOCKET_CLOSED and return as a connection_closed response. All other errors get returned as handshake_error which is just a generic io_error by the time the call returns to DFHWBXN. This causes the DFHWB0732. If GSK_ERR_CONNECTION_CLOSED is handled in the same way as GSK_ERR_SOCKET_CLOSED. This will eliminate the DFHWB0732 message. Additional Symptoms and Keywords: KIXREVxxx
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All. * **************************************************************** * PROBLEM DESCRIPTION: DFHWB0732 when an SSL TCPIP connection * * is unexpectedly closed during handshake * **************************************************************** * RECOMMENDATION: * **************************************************************** A request is received on an HTTP SSL TCP/IP service. The requestor immediately closes the connection before the SSL handshake can complete. The receive issued by the SSL handshake process gets a reason of connection_closed with a gsk_return_code of gsk_err_connection_closed. This reason code is not handled so the default handshake_error is returned. This in turn causes message DFHWB0732 to be issued. Additional keywords: WB0732 MSGDFHWB0732 HTTPS
Problem conclusion
DFHSOSE has been changed in routine sose_call_secure_soc_init to check for reason code sose_connection_closed with a sose_gsk_return_code of gsk_err_connection_closed and if found, return that instead of the default handshake_error.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM79063
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-12-12
Closed date
2013-05-15
Last modified date
2013-07-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM87710 UK94854
Modules/Macros
DFHSOSE
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R700 PSY UK94854
UP13/06/10 P F306
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
02 July 2013