dtpcclock - Online in the Cloud

PROGRAM:

NAME

dtpcclock - DTPC daemon task for managing scheduled events

SYNOPSIS

dtpcclock

DESCRIPTION

dtpcclock is a background "daemon" task that periodically performs scheduled DTPC
activities. It is spawned automatically by dtpcadmin in response to the 's' command that
starts operation of the DTPC protocol, and it is terminated by dtpcadmin in response to an
'x' (STOP) command.

Once per second, dtpcclock takes the following action:

First it executes all DTPC events scheduled to occur at any time up to the current
moment:

DTPC ADUs for which an expected positive acknowledgment has not yet arrived are
retransmitted.

Received DTPC ADUs whose time to live has elapsed are deleted.

Then dtpcclock increases the ages of all DTPC ADUs pending transmission and initiates
transmission of each such ADU whose age now equals or exceeds its aggregation time
limit.

EXIT STATUS

0 dtpcclock terminated, for reasons noted in the ion.log file. If this termination was
not commanded, investigate and solve the problem identified in the log file and use
dtpcadmin to restart dtpcclock.

1 dtpcclock was unable to attach to DTPC protocol operations, probably because dtpcadmin
has not yet been run.

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