TscHubConnection.Send results in InvalidDataException

[oscar]

Hi All,

Each function of our signalR server i've tried to call with the TcsHubConnection.Send, results in an exception: InvalidDataException: Unexpected end when reading JSON,
even functions that returns nothing (void).

Our signalR server is build using asp.net core 3.1, is the protocol used not compatible with TscHubConnection?
Any help would be appreciated.

Tia, Rj

[ViktorV]

Unfortunately, we haven't been able to reproduce the issue.
In order for us to be able to give you a detailed answer, we need a sample demonstrating the behavior you mentioned. Therefore, please, compose a small sample demonstrating the described behavior and send it to us using the contact form https://devart.com/company/contactform.html

[rballz79]

I get the same thing.

Fresh asp.net core web app, 3.1 -> added latest signalr. Simple ChatHub class with the following method:

Code: Select all

       
        public async Task SendMessage(string user, string message)
        {
            await Clients.All.SendAsync("ReceiveMessage", user, message);
        }
        

The following line of code causes the InvalidDataException->unexpected end reading json

Code: Select all

SignalRConnection.Register('SendMessage', DoMessageReceipt, [varString, varString]);

Comment the register line out and Start() gives no error - of course it also can't do anything with nothing registered...

[rballz79]

Turned logging on Debug for SignalR.

Code: Select all

--> System.Text.Json.JsonReaderException:  The JSON object contains a trailing comma at the end which is not supported in this mode.  Change the reader options.  Linenumber: 0 | BytePositionInLine: 95.

[ViktorV]

Please provide your license number and IDE version to us and we will send you a night build which may resolve the issue.

[rballz79]

Sent via email, thank you

[ViktorV]

We have answered you via e-mail.