NAME

udpbsi - UDP-based best-effort link service input task for BSSP

SYNOPSIS

udpbsi {local_hostname | @}[:local_port_nbr]

DESCRIPTION

udpbsi is a background "daemon" task that receives UDP datagrams via a UDP socket bound to local_hostname and local_port_nbr, extracts BSSP PDUs from those datagrams, and passes them to the local BSSP engine. Host name "@" signifies that the host name returned by hostname(1) is to be used as the socket's host name. If not specified, port number defaults to 6001.

The link service input task is spawned automatically by bsspadmin in response to the 's' command that starts operation of the BSSP protocol; the text of the command that is used to spawn the task must be provided as a parameter to the 's' command. The link service input task is terminated by bsspadmin in response to an 'x' (STOP) command.

EXIT STATUS

"0"

udpbsi terminated normally, 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 bsspadmin to restart udpbsi.
"1"

udpbsi terminated abnormally, for reasons noted in the ion.log file. Investigate and solve the problem identified in the log file, then use bsspadmin to restart udpbsi.

FILES

No configuration files are needed.

ENVIRONMENT

No environment variables apply.

DIAGNOSTICS

The following diagnostics may be issued to the ion.log log file:

udpbsi can't initialize BSSP.

bsspadmin has not yet initialized BSSP protocol operations.
BE-BSI task is already started.

Redundant initiation of udpbsi.
BE-BSI can't open UDP socket

Operating system error. Check errtext, correct problem, and restart udpbsi.
BE-BSI can't initialize socket

Operating system error. Check errtext, correct problem, and restart udpbsi.
udpbsi can't create receiver thread

Operating system error. Check errtext, correct problem, and restart udpbsi.

BUGS

Report bugs to <https://github.com/nasa-jpl/ION-DTN/issues>