I’m trying to connect my Android application to a OPC server. I’m using a PKI file which I have verified that I can connect using that file through dataFEED OPC UA Client by Softing. I’m able to connect using anonymous and username/password but certificate is giving me issues.

Getting the following error:
com.prosysopc.ua.client.ConnectException: Failed to create secure channel to server: : opc.tcp://10.249.xx.xx:4840 [http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256,Sign] ServiceResult=Bad_ConnectionClosed (0x80AE0000) “The network connection has been closed.”

Caused by: com.prosysopc.ua.stack.common.ServiceResultException: Bad_ConnectionClosed (code=0x80AE0000, description=”Connection closed (graceful)”)
Caused by: java.io.EOFException

0x80AE0000 = “BasConnectionClosed” which is just a generic error that doesn’t tell me what the problem is.

Any ideas on what could be causing this?

ApplicationDescription description = new ApplicationDescription();
description.setApplicationName(new LocalizedText(appName + “@localhost”));
description.setApplicationType(ApplicationType.Client);

File pfx = new File(“” + “dataFEEDOpcUaClient.pfx”);

ApplicationIdentity identity = ApplicationIdentity.loadOrCreateCertificate(description, “dataFEEDOpcUaClient”, “”, pfx, true);
identity.setApplicationDescription(description);
identity.setOrganisation(appName);
connect(address, identity, 60000, mode, objectNodeName, rtu, null, null)
.subscribe(emitter::onComplete, emitter::onError);

private Completable connect(String serverAddress, ApplicationIdentity identity, long timeout, SecurityMode mode, String objectNodeName, String rtu, String userName, String password) {
connected = true;
return Completable.create(emitter -> {
if (!clients.containsKey(objectNodeName) || clients.get(objectNodeName) == null) {
clients.put(objectNodeName, new RTUClient(updateInterval, objectNodeName, listener, nodeDao));
}
RTUClient client = clients.get(objectNodeName);
if (!client.getClient().isConnected()) {
client.getClient().setAddress(serverAddress);
client.getClient().setApplicationIdentity(identity);
client.getClient().setTimeout(timeout);
client.getClient().addServerStatusListener(new RTUServerStatusListener());
client.getClient().setSecurityMode(mode);
if (userName != null && password != null) {
client.getClient().setUserIdentity(new UserIdentity(userName, password));
}
try {
client.getClient().connect();
collectVariableNodes(objectNodeName, rtu, client).subscribe(emitter::onComplete);
} catch (Exception e) {
emitter.tryOnError(e);
}
}
}).subscribeOn(Schedulers.io())
.doOnComplete(() -> System.out.printf(LogMessages.CONNECTION_SUCCESS, TAG, rtu, objectNodeName))
.doOnError(error -> System.out.printf(LogMessages.CONNECTION_ERROR, TAG, rtu, objectNodeName, error.getLocalizedMessage()));
}