Specifications

Interfaces
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Output-buffer - a buffer to contain the looped back data. If not
present, the looped back data
is not returned to the user.
Outputs:
Return-code
- the status of the request. One of:
Request accepted
- the loop will be attempted.
Unrecognized channel
- there is no channel with the specified
identification.
Channel in wrong state
- the channel is in a state where a
loop cannot be done.
Receipt-number
- the request identification used in the Loop-poll
or Loop-abort function to identify this request.
Function:
Used to poll for completion of a Loop-direct or Loop-assisted.
nputs:
Receipt-number
- the request identification assigned to this
request by the Loop function.
Outputs:
Return-code
- the status of the operation. One of:
Not complete
- the loop is not yet done.
Success - the data came back correctly.
Aborted - the request was aborted with a Loop-abort.
Compare error
- the data came back, but it did not match what
was sent.
Transmit failed
- the local transmitter could not send the
initial message.
Channel communication error
- no response was received.
Either the initial message or the response did not arrive.
Responding-address
- the identification of the remote system that
satisfied the request. Applicable only on multicast channels.
For Loop-assisted with transmit assistance, this
is the remote
system address. For Loop-assisted with receive or full
assistance, it is the assistant system address.