在 SignalR Hub 中未获得授权标头

Question

我如何在 SignalR Hub 中应用 [Authorize]，它在我的其他 API 控制器上工作但不在 SignalR Hub 中工作，我可以在 SignalR 请求中发送 JWT 令牌。 这是我的 SignalR Hub 的 C# 代码

namespace LC_ERP
{
    public class UsersHub : Hub
    {
        private readonly Dictionary<string, bool> _userStatuses = new Dictionary<string, bool>();

        [Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]
        [UserSession]
        public override async Task OnConnectedAsync()
        {
            // Get the user ID from the JWT token in the connection request
             var userId = GetUserIdFromToken(Context);

            // Set the user status to true (online)
            _userStatuses[userId] = true;

            // Notify all connected clients of the updated user status
            await Clients.All.SendAsync("UserStatusUpdated", userId, true);

            await base.OnConnectedAsync();
        }

        [Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]
        [UserSession]
        public override async Task OnDisconnectedAsync(Exception exception)
        {
            // Get the user ID from the JWT token in the connection request
            var userId = GetUserIdFromToken(Context);

            // Set the user status to false (offline)
            _userStatuses[userId] = false;

            // Notify all connected clients of the updated user status
            await Clients.All.SendAsync("UserStatusUpdated", userId, false);

            await base.OnDisconnectedAsync(exception);
        }

        private string GetUserIdFromToken(HubCallerContext context)
        {
            var token = context.GetHttpContext().Request.Headers["Authorization"].FirstOrDefault()?.Split(" ").Last();
            var jwtHandler = new JwtSecurityTokenHandler();
            var jwtToken = jwtHandler.ReadJwtToken(token);

            return jwtToken.Claims.FirstOrDefault(c => c.Type == "id")?.Value;
        }
    }
}

那是我添加标题的角度代码：

var token:any = jwtService.getJwtToken();

    this.hubConnection = new signalR.HubConnectionBuilder()
    .withUrl(`${environment.apiURL}/users`, { accessTokenFactory: () =>  token})
    .build();
    

    //console.log(jwtService.getJwtToken())
    this.hubConnection.on('UserStatusUpdated', (userId: string, isOnline: boolean) => {
      this.userStatuses[userId] = isOnline;
    });

    this.hubConnection.start();

在 signalR 中，第一个问题是 [Authorize] 属性不起作用，第二个问题是我在这一行中得到 null：

var token = context.GetHttpContext().Request.Headers["Authorization"].FirstOrDefault()?.Split(" ").Last();

当我尝试获取 Authorization 标头时，它返回 null。