PH27337: RESIDUAL STATE FROM THE BLOCKED CONNECTIONS ON ONE LISTENER CAUSING CSQX213E GETPEERNAME RC=00000071 REASON=110E011C

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A server connection (SVRCONN) channel receives a CSQX213E error
  in the CHIN job log:
  =================
  CSQX213E CSQXLSTT Communications error,  734
  channel ????
  TRPTYPE=TCP
  function ' (getpeername)' RC=00000071
  =================
  
  In CHIN full trace, BPX1GNM OE TCP/IP Getpeername returns
  RC=00000071 reason=110E011C in field 04 and field 05.
  This error is always genereated by the same TCB.
  
  In TCPIP trace, above error always occur while exchanging
  INITIAL_DATA.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 1 Modification 0 and Release 2       *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: CSQX213E is issued reporting            *
  *                      getpeername failed rc=00000071,         *
  *                      reason=110E011C when an inbound channel *
  *                      starts, and multiple listeners are in   *
  *                      use.                                    *
  ****************************************************************
  After an incoming connection was blocked by
  'CHLAUTH TYPE(BLOCKADDR)' processing, the LSB for that listener
  is left in the wrong state.
  When an incoming connection successfully connects to another
  listener, the invalid state in the first listener results in
  getpeername being issued unexpectedly, leading to the reported
  error message.
  

Problem conclusion

• Listener processing has been changed to set the correct state
  after a connection is blocked by CHLAUTH.
  

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:

  UI72040 UI72041

Modules/Macros

• CSQXCLIT
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R100 PSY UI72040

     UP20/12/04 P F012

• R200 PSY UI72041

     UP20/12/04 P F012

Fix is available

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