SNAX/APC Configuration and Management Manual

Trace Analysis Program
SNAX/APC Configuration and Management Manual—138787
5-20
Normal Version (Log Format)
On this side, the conversation also starts with a TP-READY verb issued by the
remote TP.
Remember that the names local and remote are relative (within the context of verb
parameters), for example, the local LU is the one that is local to this side of the
conversation.
The parameters of the verb indicate:
•
The local LU name is lup01.
•
The local TP name is progp01a001.
•
No, the attach is not local—which means this TP will not be initiating the
conversation and therefore will start in a Receive state.
•
No, the TP is not dispatched.
All reply and return codes have the value zero, a normal completion. Because all the
other verbs issued by this TP complete normally, those subsequent responses have
been edited out from the example—with the exception of the RECEIVE-AND-
WAIT verbs.
The RECEIVE-AND-WAIT verb is issued by the remote TP when it is ready to
receive data or control information from the local TP.
The parameters of the verb indicate:
•
The record type is Logical.
•
The number of bytes that can be received is 400.
Successful completion of the RECEIVE-AND-WAIT verb occurs when the TP
receives data or control information from the other TP. The WHAT-RECEIVED
indicator informs the TP of the type of information received. In this case the data
type is 1, which indicates that the TP received a complete logical record or the last
remaining portion of a logical record—the entire data string.
A TP in Receive state issues RECEIVE-AND-WAIT verbs until the value in WHAT-
RECEIVED indicates a transition from Receive state. This occurs with the second
issuance of the RECEIVE-AND-WAIT verb. The received data type is 4, which
indicates that the local TP issued a CONFIRM verb. The remote TP enters the
Confirm state and can respond by issuing either CONFIRMED or SEND-ERROR.
No data is received in this reply.
The remote TP uses the CONFIRMED request to acknowledge receipt of data (or
completion of a function).
The remote TP again issues a RECEIVE-AND-WAIT. This time the response
contains no data, but the UOW header return code contains the value 1005. This
indicates an RC-DEALLOCATE-NORMAL request. The local TP requested
conversation deallocation. The remote TP should now issue DEALLOCATE
(LOCAL). The conversation is now in Deallocate state. This is a normal return
code—it is not an error.
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