bssfw - Online in the Cloud

PROGRAM:

NAME

bssfw - bundle route computation task for the IPN scheme, adapted for Bundle Streaming
Service

SYNOPSIS

bssfw

DESCRIPTION

bssfw is a background "daemon" task that pops bundles from the queue of bundle destined
for IPN-scheme endpoints, computes proximate destinations for those bundles, and appends
those bundles to the appropriate queues of bundles pending transmission to those computed
proximate destinations.

For each possible proximate destination (that is, neighboring node) there is a separate
queue for each possible level of bundle priority: 0, 1, 2. Each outbound bundle is
appended to the queue matching the bundle's designated priority.

Proximate destination computation is affected by static and default routes as configured
by bssadmin(1) and by contact graphs as managed by ionadmin(1) and rfxclock(1). bssfw
differs from ipnfw in this way: a bundle that is destined for an endpoint associated with
a BSS application (as registered in an "entry" passed to bssadmin(1) in a bssrc(5)
command) is forwarded via a duct identified in a separately defined real-time or playback
duct expression, rather than the standard duct that is used for non-BSS traffic.

bssfw is spawned automatically by bpadmin in response to the 's' (START) command that
starts operation of Bundle Protocol on the local ION node, and it is terminated by bpadmin
in response to an 'x' (STOP) command. bssfw can also be spawned and terminated in
response to START and STOP commands that pertain specifically to the IPN scheme.

EXIT STATUS

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

"1" bssfw could not commence operations, for reasons noted in the ion.log log file.
Investigate and solve the problem identified in the log file, then use bpadmin to
restart bssfw.

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