NAME wlmscpfs SYNOPSIS wlmscpfs [options] port SUMMARY The wlmscpfs application implements a Service Class Provider (SCP) for the Basic Worklist Management Service. The application will listen on a specified TCP/IP port for incoming association requests from a Worklist Management SCU. In case an association was acknowledged and a worklist query was received, the wlmscpfs application will query particular files in a certain directory (which can be specified through corresponding program options) on the file system for corresponding worklist information, and it will send this information back to the calling Worklist Management SCU. Aside from dealing with Worklist Management queries, the wlmscpfs application also supports the Verification Service Class as an SCP. USAGE wlmscpfs: DICOM Basic Worklist Management SCP (based on data files) usage: wlmscpfs [options] port parameters: port tcp/ip port number to listen on general options: -h --help print this help text and exit --version print version information and exit -v --verbose verbose mode, print processing details -d --debug debug mode, print debug information -s --single-process single process mode -dfp --data-files-path [p]ath: string path to worklist data files (default: /home/www/wlist) returned character set options: -cs0 --return-no-char-set return no specific character set (default) -cs1 --return-iso-ir-100 return specific character set ISO IR 100 network options: preferred network transfer syntaxes: +x= --prefer-uncompr prefer explicit VR local byte order (default) +xe --prefer-little prefer explicit VR little endian TS +xb --prefer-big prefer explicit VR big endian TS +xi --implicit accept implicit VR little endian TS only other network options: --refuse refuse association --reject reject association if no implement. class UID --no-fail don't fail on an invalid query --sleep-after [s]econds: integer sleep s seconds after find (default: 0) --sleep-during [s]econds: integer sleep s seconds during find (default: 0) -pdu --max-pdu [n]umber of bytes: integer [4096..131072] set max receive pdu to n bytes (default: 16384) -dhl --disable-host-lookup disable hostname lookup group length encoding (when sending C-FIND response data): +g= --group-length-recalc recalculate group lengths if present (default) +g --group-length-create always write with group length elements -g --group-length-remove always write without group length elements length encoding in sequences and items (when sending C-FIND response data): +e --length-explicit write with explicit lengths (default) -e --length-undefined write with undefined lengths encoding options: post-1993 value representations: +u --enable-new-vr enable support for new VRs (UN/UT) (default) -u --disable-new-vr disable support for new VRs, convert to OB OPTIONS The semantic impacts of the above mentioned options is clear for the majority of options. Some particular options, however, are so specific that they need detailed descriptions which will be given in this passage. The returned character set options are intended for situations in which the wlmscpfs application will return attribute values which are not composed of characters from the Dicom default character repertoire. In such cases, for example option --return-iso-ir-100 can be used to specify that a response to a modality's worklist management C-Find request shall always contain Dicom's Specific Character Set attribute (0008,0005) with a corresponding value, indi- cating the character repertoire from which the characters of returned attribute values were taken (in this example the repertoire ISO IR 100). Please note that the wlmscpfs application will not make sure that all returned values are actually made up of this character repertoire; the application expects this to be the case. Option --return-iso-ir-100 will only lead to the inclusion of the Specific Character Set attribute (0008,0005) with a corresponding value in a worklist management C-Find response. Please note that a C-Find request which is handled by this application may contain Dicom's Specific Character Set attribute (0008,0005), but this application will never use this attribute's value for matching. Besides, the question if Dicom's Specific Character Set attribute (0008,0005) will be contained in a C-Find response which is returned by this application is always determined by the returned character set option which was specified when this application was started. DICOM CONFORMANCE The wlmscpfs application supports the following SOP Classes as an SCP: VerificationSOPClass "1.2.840.10008.1.1" FINDModalityWorklistInformationModel "1.2.840.10008.5.1.4.31" The wlmscpfs application will accept presentation contexts for all of the abovementioned supported SOP Classes using any of the transfer syntaxes: LittleEndianImplicitTransferSyntax "1.2.840.10008.1.2" LittleEndianExplicitTransferSyntax "1.2.840.10008.1.2.1" BigEndianExplicitTransferSyntax "1.2.840.10008.1.2.2" The default behaviour of the wlmscpfs application is to prefer transfer syntaxes having an explicit encoding over the default implicit transfer syntax. If wlmscpfs is running on big-endian hardware it will prefer BigEndianExplicit- TransferSyntax over LittleEndianExplicitTransferSyntax (and vice versa). This behaviour can be changed with the --prefer options (see above). The wlmscpfs application does not support extended negotiation. ENVIRONMENT The wlmscpfs application will attempt to load DICOM data dictionaries specified in the DCMDICTPATH environment variable. By default, if the DCMDICTPATH environment variable is not set, the file /usr/local/dicom/lib/dicom.dic will be loaded. 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 shell PATH variable in that a colon (":") separates entries. 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.