Decoding halted because of invalid data in the stream.

[balamcsd]

Hai, I am using Workstation.UaClient 2.0 when i try to connect to opc.tcp://My-PC:53530/OPCUA/SimulationServer i am able to successfully connect to prosys OPC UA simulation server. But when i try to create subscription
In this line BrowseResponse browseResponse = await channel.BrowseAsync(browseRequest); it throw exception Decoding halted because of invalid data in the stream. Same code works with kepserver. Please help to fix this issue Thanks

[awcullen]

Thank you for reporting this issue. I am using version 2.1.1 of Workstation.UaClient and version 2.2.2-109 of Prosys Simulation Server. I have tested browsing to three levels using the following code and have not found the exception. Please let me know if there was a particular NodeId you were browsing when the error occurred.

BR, Andrew

                Console.WriteLine("Step 4 - Browse the server namespace.");
                Console.WriteLine("+ Root");
                BrowseRequest browseRequest = new BrowseRequest
                {
                    NodesToBrowse = new BrowseDescription[] { new BrowseDescription { NodeId = NodeId.Parse(ObjectIds.RootFolder), BrowseDirection = BrowseDirection.Forward, ReferenceTypeId = NodeId.Parse(ReferenceTypeIds.HierarchicalReferences), NodeClassMask = (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method, IncludeSubtypes = true, ResultMask = (uint)BrowseResultMask.All } },
                };
                BrowseResponse browseResponse = await channel.BrowseAsync(browseRequest);
                foreach (var rd1 in browseResponse.Results[0].References ?? new ReferenceDescription[0])
                {
                    Console.WriteLine("  + {0}: {1}, {2}", rd1.DisplayName, rd1.BrowseName, rd1.NodeClass);
                    browseRequest = new BrowseRequest
                    {
                        NodesToBrowse = new BrowseDescription[] { new BrowseDescription { NodeId = ExpandedNodeId.ToNodeId(rd1.NodeId, channel.NamespaceUris), BrowseDirection = BrowseDirection.Forward, ReferenceTypeId = NodeId.Parse(ReferenceTypeIds.HierarchicalReferences), NodeClassMask = (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method, IncludeSubtypes = true, ResultMask = (uint)BrowseResultMask.All } },
                    };
                    browseResponse = await channel.BrowseAsync(browseRequest);
                    foreach (var rd2 in browseResponse.Results[0].References ?? new ReferenceDescription[0])
                    {
                        Console.WriteLine("    + {0}: {1}, {2}", rd2.DisplayName, rd2.BrowseName, rd2.NodeClass);
                        browseRequest = new BrowseRequest
                        {
                            NodesToBrowse = new BrowseDescription[] { new BrowseDescription { NodeId = ExpandedNodeId.ToNodeId(rd2.NodeId, channel.NamespaceUris), BrowseDirection = BrowseDirection.Forward, ReferenceTypeId = NodeId.Parse(ReferenceTypeIds.HierarchicalReferences), NodeClassMask = (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method, IncludeSubtypes = true, ResultMask = (uint)BrowseResultMask.All } },
                        };
                        browseResponse = await channel.BrowseAsync(browseRequest);
                        foreach (var rd3 in browseResponse.Results[0].References ?? new ReferenceDescription[0])
                        {
                            Console.WriteLine("      + {0}: {1}, {2}", rd3.DisplayName, rd3.BrowseName, rd3.NodeClass);
                        }
                    }
                }

[balamcsd]

If i use version 2.1.1 of Workstation.UaClient the problem will be resolved? Pros sys product version - v2.3.2-146 Thanks

[awcullen]

I successfully browsed all 2396 nodes using version 2.1.1 Let us know if you have success too.

[balamcsd]

What is Target framework?

[awcullen]

.net framework 4.6.1

Andrew Cullen 914-374-5275

---

From: balamcsd notifications@github.com Sent: Monday, February 19, 2018 11:10:47 PM To: convertersystems/opc-ua-client Cc: Andrew Cullen; Comment Subject: Re: [convertersystems/opc-ua-client] Decoding halted because of invalid data in the stream. (#59)

What is Target framework?

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[balamcsd]

Thanks. I changed my framework from 4.5.2 -> 4.6.1 and able to build the projects and create setup. But when i try to execute await channel.OpenAsync(); It throws "Could not load file or assembly 'System.Net.Sockets, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.":"System.Net.Sockets, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"} Please suggest Thanks

[balamcsd]

Yes, after upgrading Workstation.UaClient 2.1.1 it is working in both prosys and kepware Thanks

[awcullen]

Fantastic!