SNAX/HLS Application Programming Manual

SENDDATA Verb
Application Prototyping and Simulation (APS) System
104707 Tandem Computers Incorporated 6–55
performance, you should set this indicator whenever you wish to receive data in
response to the current message.
If the session is operating in full-duplex send/receive mode, the indicator is
ignored.
End Txn
(END-TRANSACTION-IND)
A value of Y sends the SNA indicator EBI (end bracket indicator). This terminates
the current bracket (unit of work).
Formatted Data
(FORMATTED-DATA-IND)
A value of Y sends the SNA indicator FI (formatted indicator) to indicate the
presence of an FM header or field formatted data in the current message. Note
that SNAX/HLS does not translate the FM header; the header and field formats
are assumed to be already present in the user data.
Notify
A value of Y requests SNAX/HLS to queue a message (in a send-data-reply
format) on the user’s queue to indicate successful reception of this message by the
session partner. In other words, when a positive SNA response is received from
the session partner, a message with RETURN-CODE is RC-NOTIFICATION is
queued on the user’s receive queue (such positive responses are normally not
placed on the user’s queue). When operating in immediate-request mode, the
setting of this indicator causes the SEND-DATA verb to remain outstanding until
the partner’s response is received. This permits exact synchronization between the
partners.
Msg Comp
(MESSAGE-COMPLETE-IND)
A value of Y indicates that the current message in the user buffer is a complete
user message. A value of N can be set only if the Large Message Option is being
used. If the indicator equals N, SNAX/HLS transmits the user buffer as a single
chain element. If the indicator equals Y, SNAX/HLS transmits the buffer as a final
or only chain element.
Length
Is the length in bytes of the message to transmit to the session partner. This field
can be 0 to 80 bytes. If 0 is specified, a message is sent, but no user data is sent.
User Data
Contains the text of the message to send. If formatted data is Y, the first byte of the
message is interpreted by SNAX/HLS as the FMH length byte.