OPCUA-Server and IoT Gateway Edge Connection Problems

[former_member591513]

Hello everyone,

We are having trouble connection the IoT Gateway Edge to our OPCUA-Server.

We're using no certificates on our OPCUA-Server and it's using the "FreeOPCUA" python library.

Other clients can connect just fine.

We followed this guide (from SAP's documentary) and set up everything correctly.

This is the full error message we get after the gateway has started:

[DiscoveryManager]
ERROR (OpcUaServerBrowser:59) - Error creating client, due to {}
java.util.concurrent.ExecutionException: UaException: status=Bad_Timeout,
message=timed out waiting for acknowledge
com.sap.iotservices.exceptions.IoTServicesException:
java.util.concurrent.ExecutionException: UaException: status=Bad_Timeout,
message=timed out waiting for acknowledge
at
com.sap.iotservices.gateway.protocol.opcua.OpcuaUtils.createClient(OpcuaUtils.java:608)
~[gateway-opcua-4.22.0.jar:?]
at
com.sap.iotservices.gateway.protocol.opcua.OpcUaServerBrowser.buildServerStructure(OpcUaServerBrowser.java:57)

[gateway-opcua-4.22.0.jar:?]
at
com.sap.iotservices.gateway.protocol.opcua.OpcuaUtils.creteOPCUaStructure(OpcuaUtils.java:166)
[gateway-opcua-
4.22.0.jar:?]
at
com.sap.iotservices.gateway.protocol.opcua.OpcuaUtils.creteOPCUaStructure(OpcuaUtils.java:149)
[gateway-opcua-
4.22.0.jar:?]
at com.sap.iotservices.gateway.protocol.opcua.OpcuaDiscoveryManager.initializeDiscoveryManager
(OpcuaDiscoveryManager.java:44)
[gateway-opcua-4.22.0.jar:?]
at
com.sap.iotservices.gateway.core.DiscoveryManager.run(DiscoveryManager.java:269)
[gateway-core-4.22.0.jar:?]
at java.lang.Thread.run(Thread.java:748)
[?:1.8.0_181]
Caused by:
java.util.concurrent.ExecutionException: UaException: status=Bad_Timeout,
message=timed out waiting for acknowledge
at
java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
~[?:1.8.0_181]
at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
~[?:1.8.0_181]
at
com.sap.iotservices.gateway.protocol.opcua.OpcuaUtils.createClient(OpcuaUtils.java:582)
~[gateway-opcua-
4.22.0.jar:?]
... 6 more
Caused by:
org.eclipse.milo.opcua.stack.core.UaException: timed out waiting for
acknowledge
at
org.eclipse.milo.opcua.stack.client.handlers.UaTcpClientAcknowledgeHandler.lambda$startHelloTimeout$4(UaTcpClientAcknowledgeHandler.java:156)
~[stack-client-0.1.2.jar:0.1.2]
at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:588)
~[netty-common-4.1.5.Final.jar:4.1.5.Final]
at
io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:662)
~[netty-common-4.1.5.Final.jar:4.1.5.Final]
at io.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:385)
~[netty-common-4.1.5.Final.jar:4.1.5.Final]
... 1 more
[DiscoveryManager]
WARN(OpcuaUtils:168) - Problems in
communication with the sever. No device will be created!
[DiscoveryManager]
WARN (DiscoveryManager:47) - Problems
creating OPCUA structure for at lesst one of the servers

Does anyone have a solution to this?

Thank you in advance

Bastian

[former_member259476]

Dear Bastian,

is this issue still present? There have been quite some changes and fixes to the Edge Platfrom OPC UA throughout the last few months as you can see from the Release Notes (https://help.sap.com/viewer/a91b9b0c730241f99b6dd32fdc310a5b/Cloud/en-US?q=opc%20ua).

Best regards,
Jan Patrick