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.\" ========================================================================
.\"
.IX Title "DCCPCLO 1"
.TH DCCPCLO 1 "2016-07-07" "perl v5.24.1" "BP executables"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
dccpclo \- DCCP\-based BP convergence layer output task
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBdccpclo\fR \fIremote_hostname\fR[:\fIremote_port_nbr\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBdccpclo\fR is a background \*(L"daemon\*(R" task that connects to a remote node's
\&\s-1DCCP\s0 socket at \fIremote_hostname\fR and \fIremote_port_nbr\fR. It then begins
extracting bundles from the queues of bundles ready for transmission via
\&\s-1DCCP\s0 to this remote bundle protocol agent and transmitting those bundles
as \s-1DCCP\s0 datagrams to the remote host.
.PP
If not specified, \fIremote_port_nbr\fR defaults to 4556.
.PP
Note that \fBdccpclo\fR is not a \*(L"promiscuous\*(R" convergence layer daemon: it
can transmit bundles only to the node to which it is connected, so
scheme configuration directives that cite this outduct need only provide
the protocol name and the outduct name as specified on the command line
when \fBdccpclo\fR is started.
.PP
Note also that \fBdccpclo\fR has no fragmentation support at all. Therefore, the
largest bundle that can be sent via this convergence layer is limited to
just under the link's \s-1MTU \s0(typically 1500 bytes).
.PP
\&\fBdccpclo\fR is spawned automatically by \fBbpadmin\fR in response to the 's' (\s-1START\s0)
command that starts operation of the Bundle Protocol, and it is terminated by
\&\fBbpadmin\fR in response to an 'x' (\s-1STOP\s0) command.  \fBdccpclo\fR can also be
spawned and terminated in response to \s-1START\s0 and \s-1STOP\s0 commands that pertain
specifically to the \s-1DCCP\s0 convergence layer protocol.
.SH "EXIT STATUS"
.IX Header "EXIT STATUS"
.ie n .IP """0""" 4
.el .IP "``0''" 4
.IX Item "0"
\&\fBdccpclo\fR terminated normally, for reasons noted in the \fBion.log\fR file.  If
this termination was not commanded, investigate and solve the problem identified
in the log file and use \fBbpadmin\fR to restart \fBdccpclo\fR.
.ie n .IP """1""" 4
.el .IP "``1''" 4
.IX Item "1"
\&\fBdccpclo\fR terminated abnormally, for reasons noted in the \fBion.log\fR file.
Investigate and solve the problem identified in the log file, then use
\&\fBbpadmin\fR to restart \fBdccpclo\fR.
.SH "FILES"
.IX Header "FILES"
No configuration files are needed.
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
No environment variables apply.
.SH "DIAGNOSTICS"
.IX Header "DIAGNOSTICS"
The following diagnostics may be issued to the \fBion.log\fR log file:
.IP "dccpclo can't attach to \s-1BP.\s0" 4
.IX Item "dccpclo can't attach to BP."
\&\fBbpadmin\fR has not yet initialized Bundle Protocol operations.
.IP "No memory for \s-1DCCP\s0 buffer in dccpclo." 4
.IX Item "No memory for DCCP buffer in dccpclo."
\&\s-1ION\s0 system error.  Check errtext, correct problem, and restart \fBdccpclo\fR.
.IP "No such dccp duct." 4
.IX Item "No such dccp duct."
No \s-1DCCP\s0 outduct matching \fIlocal_hostname\fR and \fIlocal_port_nbr\fR has been
added to the \s-1BP\s0 database.  Use \fBbpadmin\fR to stop the \s-1DCCP\s0 convergence-layer
protocol, add the outduct, and then restart \fBdccpclo\fR.
.IP "\s-1CLO\s0 task is already started for this duct." 4
.IX Item "CLO task is already started for this duct."
Redundant initiation of \fBdccpclo\fR.
.IP "dccpclo can't get \s-1IP\s0 address for host." 4
.IX Item "dccpclo can't get IP address for host."
Operating system error.  Check errtext, correct problem, and restart \fBdccpclo\fR.
.IP "dccpclo can't create thread." 4
.IX Item "dccpclo can't create thread."
Operating system error.  Check errtext, correct problem, and restart \fBdccpclo\fR.
.IP "\s-1CLO\s0 can't open \s-1DCCP\s0 socket. This probably means \s-1DCCP\s0 is not supported on your system." 4
.IX Item "CLO can't open DCCP socket. This probably means DCCP is not supported on your system."
Operating system error. This probably means that you are not using an
operating system that supports \s-1DCCP.\s0 Make sure that you are using a current
Linux kernel and that the \s-1DCCP\s0 modules are being compiled. Check errtext, 
correct problem, and restart \fBdccpclo\fR.
.IP "\s-1CLO\s0 can't initialize socket." 4
.IX Item "CLO can't initialize socket."
Operating system error.  Check errtext, correct problem, and restart \fBdccpclo\fR.
.IP "\s-1CLO\s0 \fIsend()\fR error on socket." 4
.IX Item "CLO send() error on socket."
Operating system error.  Check errtext, correct problem, and restart \fBdccpclo\fR.
.IP "Bundle is too big for \s-1DCCP CLO.\s0" 4
.IX Item "Bundle is too big for DCCP CLO."
Configuration error: bundles that are too large for \s-1DCCP\s0 transmission (i.e.,
larger than the \s-1MTU\s0 of the link or 65535 bytes\*(--whichever is smaller) are being
enqueued for \fBdccpclo\fR.  Change routing or use smaller bundles.
.SH "BUGS"
.IX Header "BUGS"
Report bugs to <ion\-bugs@korgano.eecs.ohiou.edu>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIbpadmin\fR\|(1), \fIbprc\fR\|(5), \fIdccpcli\fR\|(1)