public Association connect(ApplicationEntity remote, AAssociateRQ rq)
throws IOException, InterruptedException, IncompatibleConnectionException,
GeneralSecurityException {
CompatibleConnection cc = findCompatibelConnection(remote);
if (rq.getCalledAET() == null) rq.setCalledAET(remote.getAETitle());
return connect(cc.getLocalConnection(), cc.getRemoteConnection(), rq);
}
private TransferCapability roleSelection(AAssociateRQ rq, AAssociateAC ac, String asuid) {
RoleSelection rqrs = rq.getRoleSelectionFor(asuid);
if (rqrs == null) return getTC(scpTCs, asuid, rq);
RoleSelection acrs = ac.getRoleSelectionFor(asuid);
if (acrs != null) return getTC(acrs.isSCU() ? scpTCs : scuTCs, asuid, rq);
TransferCapability tcscu = null;
TransferCapability tcscp = null;
boolean scu = rqrs.isSCU() && (tcscp = getTC(scpTCs, asuid, rq)) != null;
boolean scp = rqrs.isSCP() && (tcscu = getTC(scuTCs, asuid, rq)) != null;
ac.addRoleSelection(new RoleSelection(asuid, scu, scp));
return scu ? tcscp : tcscu;
}
public Association connect(Connection local, Connection remote, AAssociateRQ rq)
throws IOException, InterruptedException, IncompatibleConnectionException,
GeneralSecurityException {
checkDevice();
checkInstalled();
if (rq.getCallingAET() == null) rq.setCallingAET(AETitle);
rq.setMaxOpsInvoked(local.getMaxOpsInvoked());
rq.setMaxOpsPerformed(local.getMaxOpsPerformed());
rq.setMaxPDULength(local.getReceivePDULength());
final Socket sock =
local.connect(remote); // automatically closes the socket in case an exception is thrown
Association as;
try {
as = new Association(this, local, sock);
} catch (final IOException e) {
LOG.warn("Failed to open new association, will close underlying socket");
local.close(sock);
throw e;
}
try {
as.write(rq);
as.waitForLeaving(State.Sta5);
} catch (final IOException e) {
LOG.warn("{}: Failed to write A-ASSOCIATE-RQ, will abort association", as.toString());
as.abort();
throw e;
} catch (final InterruptedException e) {
LOG.warn(
"{}: Interrupted while waiting to leave state Sta 5, will abort association",
as.toString());
as.abort();
throw e;
}
return as;
}
private TransferCapability getTC(
Map<String, TransferCapability> tcs, String asuid, AAssociateRQ rq) {
TransferCapability tc = tcs.get(asuid);
if (tc != null) return tc;
CommonExtendedNegotiation commonExtNeg = rq.getCommonExtendedNegotiationFor(asuid);
if (commonExtNeg != null) {
for (String cuid : commonExtNeg.getRelatedGeneralSOPClassUIDs()) {
tc = tcs.get(cuid);
if (tc != null) return tc;
}
tc = tcs.get(commonExtNeg.getServiceClassUID());
if (tc != null) return tc;
}
return tcs.get("*");
}
protected PresentationContext negotiate(
AAssociateRQ rq, AAssociateAC ac, PresentationContext rqpc) {
String as = rqpc.getAbstractSyntax();
TransferCapability tc = roleSelection(rq, ac, as);
int pcid = rqpc.getPCID();
if (tc == null)
return new PresentationContext(
pcid, PresentationContext.ABSTRACT_SYNTAX_NOT_SUPPORTED, rqpc.getTransferSyntax());
for (String ts : rqpc.getTransferSyntaxes())
if (tc.containsTransferSyntax(ts)) {
byte[] info = negotiate(rq.getExtNegotiationFor(as), tc);
if (info != null) ac.addExtendedNegotiation(new ExtendedNegotiation(as, info));
return new PresentationContext(pcid, PresentationContext.ACCEPTANCE, ts);
}
return new PresentationContext(
pcid, PresentationContext.TRANSFER_SYNTAX_NOT_SUPPORTED, rqpc.getTransferSyntax());
}
