How does the listener EZACIC02 know which transaction to start?

Question & Answer

Question

For the listener we are using tranasction CSKL which uses program EZACIC02. It is defined as directed by the z/OS Communications Server IP CICS SOCKETS guide. My question is: how does the listener EZACIC02 know which transaction to start?

Answer

The listener will start a TCP listen on the port number identified by the PORT=nnnn statement in the EZACICD TYPE=LISTENER record. You would then make a TCP connection to this port number. The client would submit the transaction that it wishes to execute. The client must submit the transaction request in the IBM listener input format. This is documented in chapter 6 of the IP CICS Sockets Guide, under "CICS application transaction (IBM listener)."

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Product Synonym

ZOSCS COMMSERVER

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Document Information

Modified date:
20 March 2018

UID

dwa1437956

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