SNAX/APC Application Programming Manual

Verb Definitions
SNAX/APC Application Programming Manual—138786
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RECEIVE-AND-WAIT Verb
RWR-REQ-TO-SEND-IND
This field indicates whether the remote TP issued a REQUEST-TO-SEND verb. If
the field contains the letter Y, REQUEST-TO-SEND notification was received from
the remote TP, which requests the local TP to enter Receive state. The local TP
should use RECEIVE-AND-WAIT to enter Receive state as soon as possible.
If the field contains the letter N, the remote TP did not issue a REQUEST-TO-SEND
verb.
RWR-WHAT-RECEIVED
This field indicates what was received from the remote TP. A TP in Receive state
issues RECEIVE-AND-WAIT verbs until the value in RWR-WHAT-RECEIVED
indicates a transition from Receive state.
WR-DATA (0)
The RW-FILL field in the verb request specified FILL-BUFFER, and the local
TP received data.
WR-DATA-COMPLETE (1)
The RW-FILL field in the verb request specified FILL-LL, and the local TP
received a complete logical record or the last remaining portion of a logical
record.
WR-DATA-INCOMPLETE (2)
The RW-FILL field in the verb request specified FILL-LL, and the local TP
received an incomplete logical record (because the logical record was longer
than RW-MAX-DATA-LENGTH). The local TP should issue another
RECEIVE-AND-WAIT verb to receive the remainder of the data.
WR-SEND (3)
The remote TP entered Receive state, thereby placing the local TP in Send state.
No data is received in this reply. The local TP can now issue SEND-DATA.
WR-CONFIRM (4)
The remote TP issued a CONFIRM verb. The local TP enters the Confirm state
and can respond by issuing either CONFIRMED or SEND-ERROR. No data is
received in this reply.
WR-CONFIRM-SEND (5)
The remote TP issued a PREPARE-TO-RECEIVE verb either with CONFIRM
or with SYNC-LEVEL, and the sync level is CONFIRM. The local TP enters
Confirm state and can respond by issuing either CONFIRMED or SEND-
ERROR. No data is received in this reply. After issuing the CONFIRMED or
SEND-ERROR verb, the TP enters Send state.