messageEnvelope is null

[dsparkplug]

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What happened?

After upgrading from v4.4.793 to v4.5.8, we are getting a messageEnvelope is null error when sending a Halibut request. Any ideas what could be the cause of this error?

Reproduction

This happens when we call a method with the following signature:

public void OnMessageList(Guid asyncCallId, IList<Message> messageList, bool processImmediately = false)

The public properties of Message are:

• long Id
• long? ParentId
• MessageStatusType MessageType
• string Text
• DateTime? TimeStamp
• bool? AdditionalMessagesExist
• bool? TailCountPlusMessagesExist
• int Depth
• bool IsExternal

where MessageStatusType is an enum.

Error and Stacktrace

An error occurred when sending a request to 'https://servername:9000/', after the request began: messageEnvelope is null

   at Halibut.Transport.SecureListeningClient.HandleError(Exception lastError, Boolean retryAllowed)
   at Halibut.Transport.SecureListeningClient.ExecuteTransaction(ExchangeAction protocolHandler, CancellationToken cancellationToken)
   at Halibut.HalibutRuntime.SendOutgoingHttpsRequest(RequestMessage request, CancellationToken cancellationToken)
   at Halibut.HalibutRuntime.<SendOutgoingRequestAsync>d__44.MoveNext()
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Halibut.HalibutRuntime.SendOutgoingRequest(RequestMessage request, CancellationToken cancellationToken)
   at Halibut.ServiceModel.HalibutProxy.Invoke(MethodInfo targetMethod, Object[] args)
   at generatedProxy_2.OnMessageList(Guid , IList`1 , Boolean )

More Information

No response

Workaround

Downgrade to v4.4.793