NAME

       udpcli - UDP-based BP convergence layer input task

SYNOPSIS

       udpcli local_hostname[:local_port_nbr]

DESCRIPTION

       udpcli is a background "daemon" task that receives UDP datagrams via a UDP socket bound to
       local_hostname and local_port_nbr, extracts bundles from those datagrams, and passes them
       to the bundle protocol agent on the local ION node.

       If not specified, port number defaults to 4556.

       The convergence layer input task is spawned automatically by bpadmin in response to the
       's' (START) command that starts operation of the Bundle Protocol; the text of the command
       that is used to spawn the task must be provided at the time the "udp" convergence layer
       protocol is added to the BP database.  The convergence layer input task is terminated by
       bpadmin in response to an 'x' (STOP) command.  udpcli can also be spawned and terminated
       in response to START and STOP commands that pertain specifically to the UDP convergence
       layer protocol.

EXIT STATUS

       "0" udpcli 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 bpadmin to restart udpcli.

       "1" udpcli terminated abnormally, for reasons noted in the ion.log file.  Investigate and
           solve the problem identified in the log file, then use bpadmin to restart udpcli.

FILES

       No configuration files are needed.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

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

       udpcli can't attach to BP.
           bpadmin has not yet initialized Bundle Protocol operations.

       No such udp duct.
           No UDP induct matching local_hostname and local_port_nbr has been added to the BP
           database.  Use bpadmin to stop the UDP convergence-layer protocol, add the induct, and
           then restart the UDP protocol.

       CLI task is already started for this duct.
           Redundant initiation of udpcli.

       Can't get IP address for host
           Operating system error.  Check errtext, correct problem, and restart UDP.

       Can't open UDP socket
           Operating system error.  Check errtext, correct problem, and restart UDP.

       Can't initialize socket
           Operating system error.  Check errtext, correct problem, and restart UDP.

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

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       bpadmin(1), bprc(5), udpclo(1)