echoscu(1)                        OFFIS DCMTK                       echoscu(1)



NAME
       echoscu - DICOM verification (C-ECHO) SCU

SYNOPSIS
       echoscu [options] peer port


DESCRIPTION
       The  echoscu  application implements a Service Class User (SCU) for the
       Verification SOP Class. It sends a DICOM C-ECHO message  to  a  Service
       Class  Provider  (SCP) and waits for a response. The application can be
       used to verify basic DICOM connectivity.

PARAMETERS
       peer  hostname of DICOM peer

       port  tcp/ip port number of peer


OPTIONS
   general options
         -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


   network options
       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)

       association negotiation debugging:

         -pts  --propose-ts  [n]umber: integer (1..28)
                 propose n transfer syntaxes

         -ppc  --propose-pc  [n]umber: integer (1..128)
                 propose n presentation contexts

       other network options:

         -to   --timeout  [s]econds: integer (default: unlimited)
                 timeout for connection requests

         -ta   --acse-timeout  [s]econds: integer (default: 30)
                 timeout for ACSE messages

         -td   --dimse-timeout  [s]econds: integer (default: unlimited)
                 timeout for DIMSE messages

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

               --repeat  [n]umber: integer
                 repeat n times

               --abort
                 abort association instead of releasing it


   transport layer security (TLS) options
       transport protocol stack:

         -tls  --disable-tls
                 use normal TCP/IP connection (default)

         +tls  --enable-tls  [p]rivate key file, [c]ertificate file: string
                 use authenticated secure TLS connection

         +tla  --anonymous-tls
                 use secure TLS connection without certificate

       private key password (only with --enable-tls):

         +ps   --std-passwd
                 prompt user to type password on stdin (default)

         +pw   --use-passwd  [p]assword: string
                 use specified password

         -pw   --null-passwd
                 use empty string as password

       key and certificate file format:

         -pem  --pem-keys
                 read keys and certificates as PEM file (default)

         -der  --der-keys
                 read keys and certificates as DER file

       certification authority:
         +cf   --add-cert-file  [c]ertificate filename: string
                 add certificate file to list of certificates

         +cd   --add-cert-dir  [c]ertificate directory: string
                 add certificates in d to list of certificates

       ciphersuite:

         +cs   --cipher  [c]iphersuite name: string
                 add ciphersuite to list of negotiated suites

         +dp   --dhparam  [f]ilename: string
                 read DH parameters for DH/DSS ciphersuites

       pseudo random generator:

         +rs   --seed  [f]ilename: string
                 seed random generator with contents of f

         +ws   --write-seed
                 write back modified seed (only with --seed)

         +wf   --write-seed-file  [f]ilename: string (only with --seed)
                 write modified seed to file f

       peer authentication:

         -rc   --require-peer-cert
                 verify peer certificate, fail if absent (default)

         -vc   --verify-peer-cert
                 verify peer certificate if present

         -ic   --ignore-peer-cert
                 dont verify peer certificate


NOTES
   DICOM Conformance
       The echoscu application supports the following SOP Classes as an SCU:



       VerificationSOPClass                1.2.840.10008.1.1


       Unless the --propose-ts option is used, the  echoscu  application  will
       only propose the transfer syntax



       LittleEndianImplicitTransferSyntax  1.2.840.10008.1.2


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 --verbose also informational messages  like  processing  details
       are  reported.  Option  --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 --log-level. In --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
       --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
       <etcdir>/logger.cfg).

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
       behaviour  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. @command.txt). 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  to   summarize   common
       combinations  of  options/parameters  and  avoids longish and confusing
       command lines (an example is provided in file <datadir>/dumppat.txt).

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

       The  default  behaviour  should  be  preferred  and   the   DCMDICTPATH
       environment  variable  only used when alternative data dictionaries are
       required. The DCMDICTPATH environment variable has the same  format  as
       the  Unix  shell 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
       DCMDICTPATH environment variable. It is an error if no data  dictionary
       can be loaded.

COPYRIGHT
       Copyright  (C)  1994-2010  by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
       Germany.



Version 3.6.0                     6 Jan 2011                        echoscu(1)
