z/OS Communications Server: SNA Programmer's LU 6.2 Guide
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Entering SEND/RECEIVE state

z/OS Communications Server: SNA Programmer's LU 6.2 Guide
SC27-3669-00

Full-duplex conversations allow for both partners to send and receive information concurrently. The transaction program initiating the full-duplex conversation enters SEND/RECEIVE state after successful allocation. The partner transaction program receives the FMH-5 and enters SEND/RECEIVE state also. Either side of a full-duplex conversation in SEND/RECEIVE state can send information.

In general, the conversation is in SEND/RECEIVE state after successful completion of:
  • An APPCCMD CONTROL=ALLOC macroinstruction
  • An APPCCMD CONTROL=RCVFMH5 macroinstruction
  • An APPCCMD CONTROL=SENDFM5 macroinstruction
  • An APPCCMD CONTROL=RECEIVE, QUALIFY=SPEC|ISPEC macroinstruction and the log data indicator in the What-Received field is on, the data or data-complete indicator in the What-Received field is on, and the deallocate indicator in the What-Received field is off
Parent topic: Roles of sender and receiver

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