CurrentUser.Id is null connecting to AbpHub #3499

7 Answer(s)

• 

  0

  maliming created 4 years ago

  Support Team Fullstack Developer

  hi

  I need to send some real-time notifications to this application from my server and I'm using SignalR to do it.

  Please share some code of your hub.

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• 

  0

  Leonardo.Willrich created 4 years ago

  My hub is very simple, here is the code:

  using System;
  using System.Collections.Concurrent;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.Threading.Tasks;
  using Microsoft.AspNetCore.SignalR;
  using Microsoft.Extensions.Logging;
  using TVD_Holdings_Ltd.SBC.SignalRHub;
  using TVD_Holdings_Ltd.SBC.UIEventNotifications;
  using Volo.Abp.AspNetCore.SignalR;
  
  namespace TVD_Holdings_Ltd.SBC.UsersPresence
  {
      [HubRoute("/sbcUserPresence")]
      public class UsersPresenceSignalRHub : AbpHub
      {
          private readonly ILogger<UsersPresenceSignalRHub> _logger;
          private readonly IUserPresenceAppService _userPresenceAppService;
          internal static ConcurrentDictionary<string, Guid> Users = new ConcurrentDictionary<string, Guid>();
  
          public UsersPresenceSignalRHub(ILogger<UsersPresenceSignalRHub> logger, IUserPresenceAppService userPresenceAppService)
          {
              _logger = logger;
              _userPresenceAppService = userPresenceAppService;
          }
  
          public override async Task OnConnectedAsync()
          {
              _logger.LogDebug("UsersPresenceSignalRHub.OnConnectedAsync => CurrentUser.Id: {0}", CurrentUser.Id);
              if (CurrentUser != null && CurrentUser.Id.HasValue && CurrentTenant.Id.HasValue)
              {
                  await Groups.AddToGroupAsync(Context.ConnectionId, CurrentTenant.Id.GetValueOrDefault().ToString());
  
                  Users.TryAdd(Context.ConnectionId, CurrentUser.Id.GetValueOrDefault());
  
                  if (Users.Count(x => x.Value == CurrentUser.Id.GetValueOrDefault()) == 1)
                  {
                      _logger.LogDebug("UsersPresenceSignalRHub.OnConnectedAsync => Setting CurrentUser.Id: {0} as LoggedIn", CurrentUser.Id);
                      await _userPresenceAppService.SetUserLoggedIn();
                  }
              }
          }
  
          public override async Task OnDisconnectedAsync(Exception exception)
          {
              _logger.LogDebug("UsersPresenceSignalRHub.OnDisconnectedAsync => CurrentUser.Id: {0}", CurrentUser.Id);
              if (CurrentUser != null && CurrentUser.Id.HasValue && CurrentTenant.Id.HasValue)
              {
                  await Groups.RemoveFromGroupAsync(Context.ConnectionId, CurrentTenant.Id.GetValueOrDefault().ToString());
  
                  Users.TryRemove(Context.ConnectionId, out Guid userId);
                  if (Users.Count(x => x.Value == CurrentUser.Id.GetValueOrDefault()) == 0)
                  {
                      _logger.LogDebug("UsersPresenceSignalRHub.OnDisconnectedAsync => Setting CurrentUser.Id: {0} as LoggedOut", CurrentUser.Id);
                      await _userPresenceAppService.SetUserLoggedOut();
                  }
              }
          }
      }
  }
  
  

  Here is how the Client (Blazor WASM app) is connecting:

  presenceHub = new HubConnectionBuilder()
                  .WithUrl(baseUrl + "/sbcUserPresence")
                  .WithAutomaticReconnect(new SignalRRetryPolicy())
                  .Build()
                  .AssignConnectionEvents("User Presence");
              await presenceHub.StartAsync();
  

  I've tried to send the Token as well, but, it didn't changed:

  presenceHub = new HubConnectionBuilder()
                  .WithUrl(baseUrl + "/sbcUserPresence", options =>
                  {
                      options.AccessTokenProvider = GetAccessToken;
                  })
                  .WithAutomaticReconnect(new SignalRRetryPolicy())
                  .Build()
                  .AssignConnectionEvents("User Presence");
              await presenceHub.StartAsync();
  

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  0

  maliming created 4 years ago

  Support Team Fullstack Developer

  hi

  What's the GetAccessToken method?

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  0

  Leonardo.Willrich created 4 years ago

  It will return the current Token.

  public async Task<string> GetAccessToken()
          {
              _logger.LogDebug("AccessTokenManager.GetAccessToken - Starting...");
              await CheckAccessToken();
              if (_currentAccessToken == null || string.IsNullOrEmpty(_currentAccessToken.AccessToken))
              {
                  _logger.LogDebug("AccessTokenManager.GetAccessToken - Redirecting to Login page");
                  _navigationManager.NavigateTo("account/login");
              }
              _logger.LogDebug("AccessTokenManager.GetAccessToken - Completed");
              return _currentAccessToken?.AccessToken;
          }
  

  The _currentAccessToken was requested during the login and stored.

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  0

  maliming created 4 years ago

  Support Team Fullstack Developer

  hi

  Can you check the User of Hub? see how many claims it has.

  https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.signalr.hubcallercontext.user?view=aspnetcore-6.0

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• 

  0

  Leonardo.Willrich created 4 years ago

  Hi Maliming,

  I have cleared all site date for both applications (ABP.IO and third-party sites) and it seems to be working now.

  Here is the Context.User:

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• 

  0

  maliming created 4 years ago

  Support Team Fullstack Developer

  hi

  There is a HubFilter that will change current Principal.

  https://github.com/abpframework/abp/blob/f87e82c85ef07f0220dfaed1374858b33f4df164/framework/src/Volo.Abp.AspNetCore.SignalR/Volo/Abp/AspNetCore/SignalR/AbpAspNetCoreSignalRModule.cs#L41 https://github.com/abpframework/abp/blob/dev/framework/src/Volo.Abp.AspNetCore.SignalR/Volo/Abp/AspNetCore/SignalR/Authentication/AbpAuthenticationHubFilter.cs#L20

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