PK64092: SSL0409I SOMETIMES ISSUES WHEN SSL CLIENT DISCONNECTS ON SOME PLATFORMS

PK64092; SSL0409I is sometimes logged when an SSL client disconnects
PK65782; 2.0.47.1: IBM HTTP Server V2.0.47 Cumulative Interim Fix

APAR status

• Closed as program error.

Error description

• SSL0409I sometimes issued when SSL client disconnect on some
  platforms
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Customers with message SSL0409I in error log *
  ****************************************************************
  * PROBLEM DESCRIPTION: On some platforms, notably Linux with   *
  * recent 2.6 kernels, SSL0409I may be logged at the end of a   *
  * successful SSL connection                                    *
  ****************************************************************
  * RECOMMENDATION: Apply this fix if SSL0409I is seen in the    *
  * error log.                                                   *
  ****************************************************************
  As of APAR PK57680, mod_ibm_ssl checks for two different
  conditions to indicate the end of the client connection: POLLHUP
  as set by poll(), and the read() or write() return code.
  On platforms where POLLHUP is seen before read() or write()
  indicates the end of the connection, SSL0409I was issued, even
  for normal connection termination.
  

Problem conclusion

• When POLLHUP indicates client disconnect, the read() or write()
  operation will be retried once more to determine if an error
  code such as ECONNRESET is associated with the disconnect.  If
  no error is returned, no message will be issued.
  If the read() or write() operation returns EAGAIN/EWOULDBLOCK
  even though POLLHUP has been indicated, SSL0409I will be issued.
  .
  This fix is targeted for fix packs
    6.1.0.19
    6.0.2.29
  and cumulative fix PK65782 for 2.0.47
  

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:

Fix information

• Fixed component name

  IBM HTTP SERVER

• Fixed component ID

  5724J0801

Applicable component levels

• R60A PSN

     UP

• R60H PSN

     UP

• R60I PSN

     UP

• R60P PSN

     UP

• R60S PSN

     UP

• R60W PSN

     UP

• R60Z PSN

     UP

• R61A PSN

     UP

• R61H PSN

     UP

• R61I PSN

     UP

• R61P PSN

     UP

• R61S PSN

     UP

• R61W PSN

     UP

• R61Z PSN

     UP