z/VSE 5.2: CICS Listener enhancements
Ingolf24 120000DRN3 Visits (3363)
Today I will describe the z/VSE 5.2 enhancements for the CICS Listener.
The CICS Listener is a TCP/IP application running on CICS TS for VSE/ESA and was introduced with VSE/ESA 2.5. It was ported from z/OS. A TCP/IP client may connect and interact with the CICS Listener applications. It's a long running CICS transaction. An incoming request starts a CICS server transaction as specified by the client (transaction id). A TCP/IP communication path between the client and the CICS server will be established.
z/VSE 5,2 enhances the CICS Listener. The client now no longer needs to specify the transaction id. It's also possible to specify the TCP/IP stack to be used with the CICS Listener. Both - the transaction id and the TCP/IP stack - can be specified in the configuration file.
Besides those enhancements the CICS Listener supports IPv4 and IPv6 communication. The corresponding dialogs are also adapted to support the new functionality.
The enhancements will be described in our z/VSE TCP/IP Support book. The update including the CICS Listener enhancement will be available on our docu