AddSignalR ClientTimeoutInterval doesn't work

[devsienko]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

I have an Asp.Net Core 6 Web Api project. I add SignalR middleware:

builder.Services.AddSignalR(options => { options.ClientTimeoutInterval = TimeSpan.FromSeconds(7); });

I add a handler:

app.MapConnectionHandler<SocialWeatherConnectionHandler>("/weather");

When I turn off client internet connection I don't get any notifications/exceptions. It seem I don't have any way to know whether my client is alive or not.

P.S. When I just close an mobile app or a browser tab I can track it.

Expected Behavior

To get an expection or something like that.

Steps To Reproduce

1. Create a simple Asp.Net Core 6 Web Api application.
2. Add the SignalR middleware:

builder.Services.AddSignalR(options => { options.ClientTimeoutInterval = TimeSpan.FromSeconds(7); });

3. Add a simple handler:

app.MapConnectionHandler<SocialWeatherConnectionHandler>("/weather");

4. Use any web client to connect to the server application by WebSocket on a different machine. After you connect to the server turn off internet connectoin on the client machine.

5. Nothing happens on the server side.

You can use client from https://github.com/aspnet/SignalR/tree/master/samples/SocialWeather/wwwroot/index.html as well as SocialWeatherConnectionHandler.

Exceptions (if any)

No response

.NET Version

net6.0

Anything else?

No response

[BrennanConroy]

ConnectionHandlers are at a layer beneath SignalR. In other words, any SignalR feature (e.g. AddSignalR) will not apply to ConnectionHandler usage.

[devsienko]

ConnectionHandlers are at a layer beneath SignalR. In other words, any SignalR feature (e.g. AddSignalR) will not apply to ConnectionHandler usage.

Thank you for the answer! So does it mean that if we use SignalR with bare WebSocket we don't have built in way to detect that client lost internet connection?

[BrennanConroy]

So does it mean that if we use SignalR with bare WebSocket we don't have built in way to detect that client lost internet connection?

I think you misspoke. If you don't use SignalR you don't have a built in way to detect lost connections.