[DCMTK] Echo SCU

DCMTK: dcmnet: a networking library and utility apps

#include "dcmtk/dcmnet/assoc.h"
#include "dcmtk/dcmnet/dimse.h"


	T_ASC_Network* net; // network struct, contains DICOM upper layer FSM etc.
    ASC_initializeNetwork(NET_REQUESTOR, 0, 1000 /* timeout */, &net);

    T_ASC_Parameters* params; // parameters of association request
    ASC_createAssociationParameters(&params, ASC_DEFAULTMAXPDU);

    // set calling and called AE titles
    ASC_setAPTitles(params, "ECHOSCU", "Bunny", NULL);

    // the DICOM server accepts connections at server.nowhere.com port 104
    ASC_setPresentationAddresses(params, "localhost", "127.0.0.1:3000");

    // list of transfer syntaxes, only a single entry here
    const char* ts[] = { UID_LittleEndianImplicitTransferSyntax };

    // add presentation context to association request
    ASC_addPresentationContext(params, 1, UID_VerificationSOPClass, ts, 1);

    // request DICOM association
    T_ASC_Association* assoc;
    if (ASC_requestAssociation(net, params, &assoc).good())
    {
        if (ASC_countAcceptedPresentationContexts(params) == 1)
        {
            // the remote SCP has accepted the Verification Service Class
            DIC_US id = assoc->nextMsgID++; // generate next message ID
            DIC_US status; // DIMSE status of C-ECHO-RSP will be stored here
            DcmDataset* sd = NULL; // status detail will be stored here
            // send C-ECHO-RQ and handle response
            DIMSE_echoUser(assoc, id, DIMSE_BLOCKING, 0, &status, &sd);
            delete sd; // we don't care about status detail
        }
    }
    ASC_releaseAssociation(assoc); // release association
    ASC_destroyAssociation(&assoc); // delete assoc structure
    ASC_dropNetwork(&net); // delete net structure