ASP.NET Core 3.1 SignalR: OnReconnected method

Question

User988803722 posted

In previous SignalR versions there was OnReconnected() method in Hub class. But now it's gone and there are only OnConnectedAsync(), OnDisconnectedAsync() methods. How to detect reconnection event in Hub?

Answer 1

User1535942433 posted

Hi mkatrikh,

As far as I think,you could create a client method and call it from the hub, then, based on the result to determine whether it is reconnection or not.And you could add exception object to check the error message.

More details,you could refer to below article:

https://docs.microsoft.com/en-us/aspnet/core/signalr/dotnet-client?view=aspnetcore-3.1&tabs=visual-studio

https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.signalr.client.hubconnection.reconnecting?view=aspnetcore-3.0&viewFallbackFrom=aspnetcore-3.1

Best regards,

Yijing Sun