WhiteCharun Posts - Answer Overflow

WhiteCharun

•Created by WhiteCharun on 3/7/2025 in #help

✅ [Docker Compose] The path must be absolute. (Parameter 'root')

I added docker orchestration to my MVC project using Docker Compose but when I start the application in debug mode I get System.ArgumentException: 'The path must be absolute. (Parameter 'root')' on the line var builder = WebApplication.CreateBuilder(args);. The strange thing is that I don't get that exception in release mode.

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CC#

•Created by WhiteCharun on 3/5/2025 in #help

✅ [SignalR] How to effeciently keep track of ConnectionIds.

I'm currently trying to build a little chat room where users can send messages. The thing I can't get over my head is if this is the best way to keep track of connection Ids. Since there could be multiple tabs open i want to send the message to all the tabs so I need to make a persistant layer where I associate an id and username with the connection Id of signalR. On the client side as soon as i connect to the websocket server i call the RegisterUser

public class ChatHub : Hub
{
    private readonly IConnectionManager _connectionManager;

    public ChatHub(IConnectionManager connectionManager)
    {
        _connectionManager = connectionManager;
    }

    public async Task SendMessage(UserChatHubDTO user, string message)
    {

        await Clients.All.SendAsync("ReceiveMessage", user, message);

    }
    public void RegisterUser(UserChatHubDTO user)
    {
        _connectionManager.AddConnection(Context.ConnectionId, user);
    }

    public override async Task OnDisconnectedAsync(Exception exception)
    {
        _connectionManager.RemoveConnection(Context.ConnectionId);
        await base.OnDisconnectedAsync(exception);
    }
}

public class ChatHub : Hub
{
    private readonly IConnectionManager _connectionManager;

    public ChatHub(IConnectionManager connectionManager)
    {
        _connectionManager = connectionManager;
    }

    public async Task SendMessage(UserChatHubDTO user, string message)
    {

        await Clients.All.SendAsync("ReceiveMessage", user, message);

    }
    public void RegisterUser(UserChatHubDTO user)
    {
        _connectionManager.AddConnection(Context.ConnectionId, user);
    }

    public override async Task OnDisconnectedAsync(Exception exception)
    {
        _connectionManager.RemoveConnection(Context.ConnectionId);
        await base.OnDisconnectedAsync(exception);
    }
}

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