PM93906: ABENDAEIP CONNECTION_CLOSED IS RETURNED IF SERVER CLOSES THE CONNECTION AND CONNECTION POOLING IS USED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• HTTP outbound connection pooling is used. When the server
  normally closes the connection ( for a time-out, for example),
  the application receives an ABENDAEIP, INVREQ
  CONNECTION-CLOSED, on the EXEC CICS WEB CONVERSE.
  Also abendAEIQ can happen if the close from the server arrives
  in a different stage of the converse flow.
  In this circumstance CICS must close the socket and either get a
  new socket out of the pool or create a new socket for the
  application, transparently, without any abend.
  .
  The same implementation works fine if connection pooling is not
  used, and a new socked is acquired each time a request comes in.
  .
  The same problem can occur when using INVOKE SERVICE or
  INVOKE WEBSERVICE commands.  These commands will return
  RESP=16 and RESP2=41.
  

Local fix

• code CLOSESTATUS(CLOSE) in the WEBCONVERSE
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: AEIP abend is issued while              *
  *                      EXEC CICS WEB CONVERSE.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  CICS is using the outbound HTTP connection pooling support
  to reuse the socket token .In application, after WEB CLOSE
  API. The socket used will be put socket pool. By any reason,
  socket is closed by remote side, the socket is still left in
  pool. The next time application run WEB OPEN api. The socket
  saved in pool is chosen again. The routine which decide if
  socket is closed can not work as expected. So the closed
  socket is chosen again and used by later WEB CONVERSE api.
  The closed socket is detected by this api and AEIP abend is
  issued which means connection closed.
  

Problem conclusion

• DFHSOPL has been changed to detect when a pooled socket is
  closed.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

• ×**** PE14/05/09 FIX IN ERROR. SEE APAR PI17639  FOR DESCRIPTION
  ×**** PE14/05/09 FIX IN ERROR. SEE APAR PI17639  FOR DESCRIPTION
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  PM97266 UI11678

Modules/Macros

•    DFHSOAD  DFHSOCK  DFHSODM  DFHSODUF DFHSOIS
  DFHSOL   DFHSOLI  DFHSOLS  DFHSOLX  DFHSOM01 DFHSOM02 DFHSOM03
  DFHSOPL  DFHSORD  DFHSOSE  DFHSOST  DFHSOS00 DFHSOS01 DFHSOS02
  DFHSOS03 DFHSOS04 DFHSOS05 DFHSOS06 DFHSOS07 DFHSOS08 DFHSOS09
  DFHSOS10 DFHSOS11 DFHSOS12 DFHSOS13 DFHSOS14 DFHSOS15 DFHSOS16
  DFHSOS17 DFHSOS18 DFHSOS19 DFHSOS20 DFHSOS21 DFHSOS22 DFHSOS23
  DFHSOTB  DFHSOTI  DFHSOTRI DFHSOUE  DFHSOXM
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UI11678

     UP13/11/01 P F310

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.