Can't reproduce DLMSDirector's in Java Code.

The java code

DLMS Director trace

Java trace

Here's the trace from Client JAVA app:

TX: 21:24:39.724 7E A0 07 03 21 93 0F 01 7E
RX: 21:24:39.758 7E A0 07 21 03 73 01 40 7E
TX: 21:24:39.758 7E A0 2B 03 21 10 FB AF E6 E6 00 60 1D A1 09 06 07 60 85 74 05 08 01 01 BE 10 04 0E 01 00 00 00 06 5F 1F 04 00 00 1E 1D FF FF C5 E4 7E
RX: 21:24:39.943 7E A0 37 21 03 30 6C 7C E6 E7 00 61 29 A1 09 06 07 60 85 74 05 08 01 01 A2 03 02 01 00 A3 05 A1 03 02 01 00 BE 10 04 0E 08 00 06 5F 1F 04 00 00 02 14 00 E5 00 07 30 C6 7E
TX: 21:24:39.952 7E A0 19 03 21 32 6F D8 E6 E6 00 C0 01 C1 00 01 00 00 2A 00 00 FF 02 00 12 80 7E
RX: 21:24:40.032 7E A0 22 21 03 52 8E 91 E6 E7 00 C4 01 C1 00 09 10 46 49 4F 52 30 33 34 31 31 38 31 39 30 32 32 30 C8 98 7E
TX: 21:24:40.047 7E A0 19 03 21 54 5F DE E6 E6 00 C0 01 C1 00 01 00 01 2B 01 01 FF 02 00 13 0C 7E
RX: 21:24:40.125 7E A0 15 21 03 74 69 CE E6 E7 00 C4 01 C1 00 06 80 00 02 2D 44 FC 7E
Index: 2 Value: 46 49 4F 52 30 33 34 31 31 38 31 39 30 32 32 30
Index: 2 Value: 2147484205
TX: 21:24:40.125 7E A0 07 03 21 53 03 C7 7E
RX: 21:24:40.172 7E A0 07 21 03 73 01 40 7E
TX: 21:24:40.187 7E A0 07 03 03 93 8C 11 7E
RX: 21:24:40.247 7E A0 07 03 03 73 82 F6 7E
TX: 21:24:40.255 7E A0 2C 03 03 32 49 EA E6 E6 00 C8 1E 30 00 00 01 A0 B8 C8 C5 68 A0 A9 98 5E 04 93 3A 58 0A 73 F0 B2 12 CF 72 16 14 24 E9 EE 28 45 6C 7E

And here's the source code:
// ----------- 1. Connect using public client (16)
// create client instance
GXDLMSSecureClient client = new GXDLMSSecureClient(true, 16, 1, Authentication.NONE, null, Itype);
client.getProposedConformance().addAll(GXDLMSClient.getInitialConformance(true));

// create reader instance
reader = new GXDLMSReader(client, settings.media, settings.trace);

// open media
settings.media.open();

// SNRM handshake
reader.initializeConnection();

// see conformance
System.out.println(client.getNegotiatedConformance());

// ----------- 2. Read Invocation Counter (0.0.43.1.1.255)
obj = GXDLMSClient.createObject(ObjectType.DATA);
obj.setLogicalName("0.1.43.1.1.255");
Object val_ic = reader.read(obj,2);

// show values
reader.showValue(2, val_ic);

// ----------- 3. Disconnect (without closing media)
reader.close(false, false); (first argument: close media? / second argument: send release?)

// ----------- 4. Compute server system title, Client system title, and key
byte[] cst = GXCommon.hexToBytes("5341435341435341"); // client system title
byte[] key = GXCommon.hexToBytes("4BFE5EDD86F0B34EF4BCBE5BD4C2D91F"); // encryption key
byte[] sst = GXCommon.hexToBytes("2F19200219184103"); // server system title

// ----------- 5. Connect as secured client.
GXDLMSSecureClient scl = client;
scl.setClientAddress(1);
scl.getCiphering().setSecurity(Security.AUTHENTICATION_ENCRYPTION);
scl.getCiphering().setSecuritySuite(SecuritySuite.AES_GCM_128);
scl.getCiphering().setAuthenticationKey(key);
scl.getCiphering().setBlockCipherKey(key);
scl.getCiphering().setSystemTitle(sst);
scl.getCiphering().setRecipientSystemTitle(cst);
scl.setServerSystemTitle(sst);
scl.getCiphering().setInvocationCounter(Long.parseLong(val_ic.toString()));

// --- test the secured client
reader.initializeConnection(true); // first argument: pre-establushed? (E.c. dont send AARQ)
// see conformance
System.out.println(client.getNegotiatedConformance());

obj = GXDLMSClient.createObject(ObjectType.DATA);
obj.setLogicalName("0.1.43.1.1.255");
val_ic = reader.read(obj,1); // <<<<---- here it fails
reader.showValue(1, val_ic);

} catch (Exception ex) {
System.out.println(ex.getMessage());
} finally {
if (reader != null) {
try {
reader.close();
} catch (Exception e) {
System.out.println(e.getMessage());
System.exit(1);
}
}
System.out.println("Ended. Press any key to continue.");
}
}

The output is:
Authentication: None
ClientAddress: 0x10
ServerAddress: 0x1
[MULTIPLE_REFERENCES, GET, SELECTIVE_ACCESS]
Index: 2 Value: 2147484205
DisconnectRequest
[MULTIPLE_REFERENCES, GET, SELECTIVE_ACCESS]
Invalid HDLC Frame: 50 Expected: 30
Data send failed. Try to resend 1/3
Data send failed. Try to resend 2/3

PS: This forked from Gurux client app example.
The changes in fucntions of GXDLMSReader class:

void initializeConnection(boolean pre_established) throws Exception, InterruptedException {
<...skipped...>
if (!pre_established) {
reply.clear();
readDataBlock(dlms.aarqRequest(), reply);
// Parse reply.
dlms.parseAareResponse(reply.getData());
reply.clear();

// Get challenge Is HLS authentication is used.
if (dlms.getAuthentication().getValue() > Authentication.LOW
.getValue()) {
for (byte[] it : dlms.getApplicationAssociationRequest()) {
readDLMSPacket(it, reply);
}
dlms.parseApplicationAssociationResponse(reply.getData());
}

void close(boolean close_media, boolean release) throws Exception {
if (Media != null && Media.isOpen()) {
System.out.println("DisconnectRequest");
GXReplyData reply = new GXReplyData();
if (release) {
try {
readDataBlock(dlms.releaseRequest(), reply);
} catch (Exception e) {
// All meters don't support release.
}
}
reply.clear();
readDLMSPacket(dlms.disconnectRequest(), reply);
if (close_media) {
Media.close();
}
}
}

If I try to send AARQ when in secured mode (client 01). The meter responds 'Service not allowed'. As companion documentations says, it is pre-established.

I know! And i dont send it! But still reading fails. Any suggestion on possible reason? May be i am missing something?

There’s also a confusion in methods for setting system titles.
There are two methods:
client itself has setServerSystemTitle()
then ciphering also has setSystemTitle() and setRecipientSystemTitle()
i use all of them (see code above). Which ones are correct to use?

it was an invocation counter that caused error (now its working). i traced my com port and meter is responding okay. it seems that reader cannot properly recieve the bytes. the inhandled exception occurs, that says: “Invalid HDLC Frame: 50 Expected: 30". is there a bug in java library?

Thank you. It worked!