Visual Studio 2022 - Debugging guide with Blazor WebAssembly App and SignalR Connection
I'm sure I'm missing something obvious here, but I'm trying to configure I'm relatively new to this, so bear with me. I'm working with a frustrating scenario while trying to debug my Blazor WebAssembly app in Visual Studio 2022. The app connects to a SignalR hub for real-time updates, but during debugging, I'm unable to establish a connection. The behavior I'm working with is: ``` System.InvalidOperationException: Unable to connect to the server. Ensure you are using the correct URL and that the server is running. ``` I've verified that the SignalR hub is running and accessible by hitting the endpoint directly in the browser. The relevant part of my code where I set up the SignalR connection looks like this: ```csharp using Microsoft.AspNetCore.SignalR.Client; public class MyService { private HubConnection _hubConnection; public MyService() { _hubConnection = new HubConnectionBuilder() .WithUrl("https://localhost:5001/myHub") .Build(); } public async Task StartConnectionAsync() { await _hubConnection.StartAsync(); } } ``` I have also checked that my launch settings are set to use HTTPS, but I'm still getting the behavior. I've tried adding the following line in the `Program.cs` to configure the service: ```csharp builder.Services.AddSignalR(); ``` Additionally, I made sure to use the same `localhost` URL for both server and client. I have no CORS issues since I have allowed requests from my client during development. I also made sure to check the console for any additional behavior messages while running in debug mode, but it's just the disconnection message. Has anyone encountered this scenario before? Any insights on what I might be missing or how to debug this further would be greatly appreciated. I'm using .NET 6 and Visual Studio 2022, and I've noticed this scenario only in the debugging mode, while it works perfectly when running the application without debugging. This is part of a larger CLI tool I'm building. What am I doing wrong? I'm working with C# in a Docker container on Linux. I appreciate any insights! I've been using C# for about a year now.