BadTimeout error during publish leads to non recovering connection

[marcschier]

Not sure if this can be related, but in one of our cases we're seeing a similar message:

[18:28:43.6074] fail: Azure.IIoT.OpcUa.Publisher.Stack.Services.OpcUaStack[0]
      Publish #162, Reconnecting=False, Error: BadTimeout
[18:28:43.6840] fail: Azure.IIoT.OpcUa.Publisher.Stack.Services.OpcUaStack[0]
      Publish #162, Reconnecting=False, Error: BadTimeout
[18:28:43.7077] fail: Azure.IIoT.OpcUa.Publisher.Stack.Services.OpcUaStack[0]
      PUBLISH #162 - Unhandled error BadTimeout during Publish.
      Opc.Ua.ServiceResultException: BadTimeout
         at Opc.Ua.ClientBase.ValidateResponse(ResponseHeader header)
         at Opc.Ua.SessionClient.EndPublish(IAsyncResult result, UInt32& subscriptionId, UInt32Collection& availableSequenceNumbers, Boolean& moreNotifications, NotificationMessage& notificationMessage, StatusCodeCollection& results, DiagnosticInfoCollection& diagnosticInfos)
         at Opc.Ua.Client.Session.OnPublishComplete(IAsyncResult result)
[18:28:43.7842] fail: Azure.IIoT.OpcUa.Publisher.Stack.Services.OpcUaStack[0]
      PUBLISH #162 - Unhandled error BadTimeout during Publish.
      Opc.Ua.ServiceResultException: BadTimeout
         at Opc.Ua.ClientBase.ValidateResponse(ResponseHeader header)
         at Opc.Ua.SessionClient.EndPublish(IAsyncResult result, UInt32& subscriptionId, UInt32Collection& availableSequenceNumbers, Boolean& moreNotifications, NotificationMessage& notificationMessage, StatusCodeCollection& results, DiagnosticInfoCollection& diagnosticInfos)
         at Opc.Ua.Client.Session.OnPublishComplete(IAsyncResult result)

This occurs without a specific cadence, but with quite some frequency, sometimes within 2 minutes, sometimes within 3-4 minutes.

Apparently we're receiving all the data, but we continuously see messages like the above on the logs in between the statistics messages.

We have just 2 nodes subscribed on 2 servers, so a very simple configuration:

[
  {
    "DataSetWriterGroup": "1231",
    "DataSetWriterId": "DSWID:1231",
    "EndpointUrl": "opc.tcp://xxx.xxx.xxx.xxx:nnnn",
    "DataSetPublishingInterval": 10000,
    "OpcNodes": [
      {
        "Id": "ns=7;s=<identifier 1 here>",
        "OpcSamplingInterval": 400
      },
      {
        "Id": "ns=7;s=<identifier 2 here>",
        "OpcSamplingInterval": 400
      }
    ]
  },
  {
    "DataSetWriterGroup": "1232",
    "DataSetWriterId": "DSWID:1232",
    "EndpointUrl": "opc.tcp://yyy.yyy.yyy.yyy:nnnn",
    "DataSetPublishingInterval": 10000,
    "OpcNodes": [
      {
        "Id": "ns=7;s=<identifier 1 here>",
        "OpcSamplingInterval": 400
      },
      {
        "Id": "ns=7;s=<identifier 2 here>",
        "OpcSamplingInterval": 400
      }
    ]
  }
]

Originally posted by @nelsonmorais in #2104 (comment)