Logging for SignalR diagnostics in Server and Client side

Server-side logging

To view the logs in the server console, we can edit the appsettings.json or configure in CreateWebHostBuilder method.

Add these to appsettings.json

"Microsoft.AspNetCore.SignalR": "Debug",
"Microsoft.AspNetCore.Http.Connections": "Debug"

Or in the program.cs we can configure the builder

// Configure logging
builder.Logging.AddFilter("Microsoft.AspNetCore.SignalR", LogLevel.Debug);
builder.Logging.AddFilter("Microsoft.AspNetCore.Http.Connections", LogLevel.Debug);

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Client side logging

For .NET client add Microsoft.Extensions.Logging.Console package explicitly for console logging or install for any other logging providers.

During the initiation of HubConnectionBuilder configure the logs.

var connection = new HubConnectionBuilder()
    .WithUrl("https://url.com/hub/url")
    .ConfigureLogging(logging =>
    {
        // Log to the Console
        logging.AddConsole();

        // This will set ALL logging to Debug level
        logging.SetMinimumLevel(LogLevel.Debug);
    })
    .Build();

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