NAME

tcputa - TCP/IP-based CFDP UT-layer adapter

SYNOPSIS

tcputa

DESCRIPTION

tcputa is a background "daemon" task that sends and receives CFDP PDUs via a TCP/IP socket.

The task is spawned automatically by cfdpadmin in response to the 's' command that starts operation of the CFDP protocol; the text of the command that is used to spawn the task must be provided as a parameter to the 's' command. The UT-layer daemon is terminated by cfdpadmin in response to an 'x' (STOP) command.

EXIT STATUS

"0"

tcputa 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 cfdpadmin to restart tcputa.
"1"

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

FILES

No configuration files are needed.

ENVIRONMENT

No environment variables apply.

DIAGNOSTICS

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

tcputa can't attach to CFDP.

cfdpadmin has not yet initialized CFDP protocol operations.
tcputa can't dequeue outbound CFDP PDU; terminating.

Possible system error. Check ion.log for additional diagnostic messages.
tcputa can't track PDU; terminating.

Possible system error. Check ion.log for additional diagnostic messages.
tcputa can't handle inbound PDU.

Possible system error; reception thread terminates. Check ion.log for additional diagnostic messages.

BUGS

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