Issue in connecting OPC UA client with Kepware v5 using OPC UA sdk

[prasadmarathe]

Hi Team,
I wanted to use OPCUA SDK to integrate in my java application in order to connect with Kepware server v5. Can you provide me steps to make connection to my kepware server.
I am using below code -
try {
OpcUaClient client = OpcUaClient.create("opc.tcp://:49320");
LOGGER.info("Session is created for - " + client.toString());
} catch (Exception e) {
LOGGER.log(Level.SEVERE, e.getMessage(), e);
e.printStackTrace();
}

[kevinherron]

Maybe start here, and make sure your endpoint URL includes the hostname or IP of the KSE instance.

https://github.com/eclipse/milo/wiki/Client#connecting

[kevinherron]

4.1.x

[prasadmarathe]

Hi,
I have added dependency in my project as below, but still getting same netty error as mentioned earlier.

org.eclipse.milo
sdk-client
0.6.9


io.netty
netty-all
4.1.77.Final

Is my implementation correct or do i need to add specific artifactId in place of netty-all, for OPC UA JAVA client implementation.

Any sample project of OPC UA Java client which can connect with Kepware OPC server will really help.

[kevinherron]

You don't need to add your own Netty dependency, Milo has a transitive dependency.

You need to figure out why your project already has a dependency on an older version of Netty.

[prasadmarathe]

Hi Kevin,

After changing netty dependency position and version, my netty issue gets resolved. But now i am getting below error while calling create -
Code
OpcUaClient client = null;
client = OpcUaClient.create("opc.tcp://IP Address:Port number");
client.connect().get();
System.out.println("Connected to opc.tcp://IP Address:Port number through eclipse Milo ");

Error
SEVERE: Error starting wrapper for: OPC(@TST_OPC)
java.lang.NoSuchMethodError: com.google.common.collect.Tables.synchronizedTable(Lcom/google/common/collect/Table;)Lcom/google/common/collect/Table;
at org.eclipse.milo.opcua.stack.core.types.DefaultDataTypeManager.(DefaultDataTypeManager.java:30)
at org.eclipse.milo.opcua.stack.core.types.DefaultDataTypeManager.createAndInitialize(DefaultDataTypeManager.java:87)
at org.eclipse.milo.opcua.stack.client.UaStackClient.(UaStackClient.java:58)
at org.eclipse.milo.opcua.stack.client.UaStackClient.create(UaStackClient.java:415)
at org.eclipse.milo.opcua.stack.client.DiscoveryClient.getEndpoints(DiscoveryClient.java:258)
at org.eclipse.milo.opcua.stack.client.DiscoveryClient.getEndpoints(DiscoveryClient.java:231)
at org.eclipse.milo.opcua.stack.client.DiscoveryClient.getEndpoints(DiscoveryClient.java:188)
at org.eclipse.milo.opcua.sdk.client.OpcUaClient.create(OpcUaClient.java:214)

Can you help me identify the root cause here based on above code and error data

[kevinherron]

Looks like now your problem is an old version of Guava on the class path.