/*!

\if MANPAGES
\page termscu DICOM termination SCU
\else
\page termscu termscu: DICOM termination SCU
\endif

\section termscu_synopsis SYNOPSIS

\verbatim
termscu [options] peer port
\endverbatim

\section termscu_description DESCRIPTION

The \b termscu application implements a Service Class User (SCU) for DCMTK's
private Shutdown SOP Class.  It tries to negotiate this private Shutdown SOP
Class with a Service Class Provider (SCP) which (if this feature is
implemented) will immediately shutdown after refusing the association.
The application can be used to shutdown some of DCMTK's server applications.

\section termscu_parameters PARAMETERS

\verbatim
peer  hostname of DICOM peer

port  tcp/ip port number of peer
\endverbatim

\section termscu_options OPTIONS

\subsection termscu_general_options general options
\verbatim
  -h    --help
          print this help text and exit

        --version
          print version information and exit

        --arguments
          print expanded command line arguments

  -q    --quiet
          quiet mode, print no warnings and errors

  -v    --verbose
          verbose mode, print processing details

  -d    --debug
          debug mode, print debug information

  -ll   --log-level  [l]evel: string constant
          (fatal, error, warn, info, debug, trace)
          use level l for the logger

  -lc   --log-config  [f]ilename: string
          use config file f for the logger
\endverbatim

\subsection termscu_network_options network options
\verbatim
application entity titles:

  -aet  --aetitle  [a]etitle: string
          set my calling AE title (default: ECHOSCU)

  -aec  --call  [a]etitle: string
          set called AE title of peer (default: ANY-SCP)

other network options:

  -pdu  --max-pdu  [n]umber of bytes: integer (4096..131072)
          set max receive pdu to n bytes (default: 16384)
\endverbatim

\section termscu_notes NOTES

\subsection termscu_dicom_conformance DICOM Conformance

The \b termscu application supports the following SOP Classes as an SCU:

\verbatim
PrivateShutdownSOPClass  1.2.276.0.7230010.3.4.1915765545.18030.917282194.0
\endverbatim

\section termscu_logging LOGGING

The level of logging output of the various command line tools and underlying
libraries can be specified by the user.  By default, only errors and warnings
are written to the standard error stream.  Using option \e --verbose also
informational messages like processing details are reported.  Option
\e --debug can be used to get more details on the internal activity, e.g. for
debugging purposes.  Other logging levels can be selected using option
\e --log-level.  In \e --quiet mode only fatal errors are reported.  In such
very severe error events, the application will usually terminate.  For more
details on the different logging levels, see documentation of module "oflog".

In case the logging output should be written to file (optionally with logfile
rotation), to syslog (Unix) or the event log (Windows) option \e --log-config
can be used.  This configuration file also allows for directing only certain
messages to a particular output stream and for filtering certain messages
based on the module or application where they are generated.  An example
configuration file is provided in <em>\<etcdir\>/logger.cfg</em>.

\section termscu_command_line COMMAND LINE

All command line tools use the following notation for parameters: square
brackets enclose optional values (0-1), three trailing dots indicate that
multiple values are allowed (1-n), a combination of both means 0 to n values.

Command line options are distinguished from parameters by a leading '+' or '-'
sign, respectively.  Usually, order and position of command line options are
arbitrary (i.e. they can appear anywhere).  However, if options are mutually
exclusive the rightmost appearance is used.  This behavior conforms to the
standard evaluation rules of common Unix shells.

In addition, one or more command files can be specified using an '@' sign as a
prefix to the filename (e.g. <em>\@command.txt</em>).  Such a command argument
is replaced by the content of the corresponding text file (multiple
whitespaces are treated as a single separator unless they appear between two
quotation marks) prior to any further evaluation.  Please note that a command
file cannot contain another command file.  This simple but effective approach
allows one to summarize common combinations of options/parameters and avoids
longish and confusing command lines (an example is provided in file
<em>\<datadir\>/dumppat.txt</em>).

\section termscu_environment ENVIRONMENT

The \b termscu utility will attempt to load DICOM data dictionaries specified
in the \e DCMDICTPATH environment variable.  By default, i.e. if the
\e DCMDICTPATH environment variable is not set, the file
<em>\<datadir\>/dicom.dic</em> will be loaded unless the dictionary is built
into the application (default for Windows).

The default behavior should be preferred and the \e DCMDICTPATH environment
variable only used when alternative data dictionaries are required.  The
\e DCMDICTPATH environment variable has the same format as the Unix shell
\e PATH variable in that a colon (":") separates entries.  On Windows systems,
a semicolon (";") is used as a separator.  The data dictionary code will
attempt to load each file specified in the \e DCMDICTPATH environment variable.
It is an error if no data dictionary can be loaded.

\section termscu_copyright COPYRIGHT

Copyright (C) 2005-2022 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany.

*/