Issue an EXEC CICS® LINK to program EZACIC20 to start or stop the CICS socket interface. You need to follow these steps in the LINKing program.

Perform the following steps to start or stop the CICS socket interface with program link:

1. Define the COMMAREA for EZACIC20 by including the following instruction in your DFHEISTG definition:

            EZACICA AREA=P20,TYPE=CSECT

   The length of the area is equated to P20PARML, and the name of the structure is P20PARMS.
2. Initialize the COMMAREA values as follows:

   P20TYPE

   I

   Initialization

   T

   Immediate termination

   D

   Deferred termination

   Q

   Quiesce the CICS socket interface by querying the PLT shutdown immediate configuration option and performing the shutdown based on the results of that query

   P20OBJ

   C

   CICS sockets interface

   L

   Listener

   P20LIST

   Name of listener (if this is listener initialization or termination)

3. Issue the EXEC CICS LINK to program EZACIC20. EZACIC20 does not return until the function is complete.
4. Check the P20RET field for the response from EZACIC20. See the P20RET field of the P20PARMS structure in the hlq.SEZACMAC(EZACICA) macro for the meanings of the return values from calling EZACIC20.