Open Closed

Chat Module not showing #10257

User avatar
0
brauerj@gc.adventist.org created

I've just installed the Chat Module and run the database migration and enabled the setting on the administration page but I'm not seeing anything in toolbar or menu. What am I missing?

Go to accepted answer
6 Answer(s)
  • User Avatar
    0
    AI-Bot created
    Support Team ABP Agent
    1. Solution To make the Chat module UI (toolbar button and menu) appear in a Blazor Server app (v9.1.3), verify these steps end-to-end:

    • Install the correct packages into the Blazor Server host

      • In your Blazor Server host project (YourApp.Blazor), ensure the UI and SignalR packages are installed:
        • Volo.Chat.Blazor
        • Volo.Chat.SignalR
      • In your HttpApi.Host (or unified host if not tiered), ensure:
        • Volo.Chat.HttpApi
        • Volo.Chat.Application
        • Volo.Chat.Domain (via standard module deps)
        • Volo.Chat.SignalR
      • If using a gateway (YARP), route both REST and SignalR:
        • /api/chat/{**catch-all} -> your host
        • /signalr-hubs/{**catch-all} -> your host

    • Add module dependencies

      • Blazor Server UI module:
    using Volo.Abp.Modularity;
    using Volo.Chat.Blazor;
    using Volo.Chat.SignalR;

    [DependsOn(
        typeof(ChatBlazorModule),
        typeof(ChatSignalRModule)
    )]
    public class YourAppBlazorModule : AbpModule
    {
    }
    • HttpApi.Host module:
    using Volo.Abp.Modularity;
    using Volo.Chat;
    using Volo.Chat.SignalR;

    [DependsOn(
        typeof(ChatHttpApiModule),
        typeof(ChatApplicationModule),
        typeof(ChatSignalRModule)
    )]
    public class YourAppHttpApiHostModule : AbpModule
    {
    }

    • Enable the Chat feature (tenant/host)

      • Go to Administration -> Feature Management for the current tenant (or host if you’re on host) and enable the Chat feature. Without this, the UI won’t render the chat toolbar item.
      • After enabling, sign out and sign in again to refresh the application configuration.

    • Grant Chat permissions to the user/role

      • Grant Chat.Messaging (and other Chat permissions as needed) to the role of the logged-in user (e.g., admin) under Identity -> Roles -> Permissions.
      • If you changed permissions and still can’t see the UI, clear the cache (e.g., Redis) and re-login.

    • Ensure SignalR hub is reachable

      • Chat uses SignalR hub at /signalr-hubs/chat. Make sure:
        • app.MapHub<...> is configured by ChatSignalRModule (happens when you depend on it).
        • If behind YARP, forward:
          • /signalr-hubs/{**catch-all} to the same backend as your HttpApi.Host.
        • If you see 401 for the GET to /signalr-hubs/chat with access_token in query, forward the token to Authorization header in gateway:
    app.Use(async (ctx, next) =>
      {
          var accessToken = ctx.Request.Query["access_token"];
          if (!string.IsNullOrEmpty(accessToken) &&
              ctx.Request.Path.StartsWithSegments("/signalr-hubs/chat"))
          {
              ctx.Request.Headers["Authorization"] = "Bearer " + accessToken;
          }
          await next();
      });

    • Blazor Server toolbar visibility

      • The chat toolbar item is added by the Chat Blazor package. If you customized the layout or toolbar rendering, ensure the toolbar component (NavToolbar) is present in your layout and the theme isn’t overriding/removing toolbar items.
      • Verify the menu/toolbar contributor isn’t filtered by tenant/feature/permission due to missing permission or disabled feature (see above).

    • Database/migration

      • You already ran the migrations; ensure the chat tables exist and no startup exceptions occur. Check logs for any Chat-related errors at startup.

    • Common pitfalls

      • Package added to wrong project (e.g., installed only to AuthServer or a microservice instead of the HttpApi.Host that serves your Blazor UI). Ensure the HttpApi.Host that your Blazor UI calls has ChatHttpApi + ChatSignalR.
      • Missing ChatSignalRModule dependency on the backend or missing route in gateway for /signalr-hubs.
      • Feature enabled on host but you are logged into a tenant (or vice versa). Enable where you log in.
      • Permissions not granted to the current role.
      • Cached config/permissions. Re-login and clear caches if needed.

    If you complete the steps above, the chat icon should appear in the top toolbar and the API calls to /api/chat/... and SignalR to /signalr-hubs/chat should succeed.

    1. Sources
    • https://abp.io/docs/latest/modules/chat
    • https://abp.io/docs/latest/framework/real-time/signalr
    • https://abp.io/support/questions/6782
    • https://abp.io/support/questions/5007
    • https://abp.io/support/questions/4426
    • https://abp.io/docs/latest/framework/ui/blazor/navigation-menu

    This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

  • User Avatar
    0
    brauerj@gc.adventist.org created

    It looks like I needed to give chat permissions to the admin role. That got the icon showing but now I'm getting this error.

    Antiforgery token validation failed. The required antiforgery header value "RequestVerificationToken" is not present. Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException: The required antiforgery header value "RequestVerificationToken" is not present. at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery.ValidateRequestAsync(HttpContext httpContext) at Microsoft.AspNetCore.Mvc.ViewFeatures.Filters.ValidateAntiforgeryTokenAuthorizationFilter.OnAuthorizationAsync(AuthorizationFilterContext context)

    System.Net.Http.HttpRequestException: Response status code does not indicate success: 400 (Bad Request). at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode() at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.NegotiateAsync(Uri url, HttpClient httpClient, ILogger logger, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.GetNegotiationResponseAsync(Uri uri, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.SelectAndStartTransport(TransferFormat transferFormat, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.StartAsyncCore(TransferFormat transferFormat, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.StartAsync(TransferFormat transferFormat, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionFactory.ConnectAsync(EndPoint endPoint, CancellationToken cancellationToken) at Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionFactory.ConnectAsync(EndPoint endPoint, CancellationToken cancellationToken) at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsyncCore(CancellationToken cancellationToken) at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsyncInner(CancellationToken cancellationToken) at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsync(CancellationToken cancellationToken) at Volo.Chat.Blazor.Components.MessagesToolbarItem.OnInitializedAsync() at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync() at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)[12:38:11 INF] Antiforgery token validation failed. The required antiforgery header value "RequestVerificationToken" is not present. Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException: The required antiforgery header value "RequestVerificationToken" is not present. at Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery.ValidateRequestAsync(HttpContext httpContext) at Microsoft.AspNetCore.Mvc.ViewFeatures.Filters.ValidateAntiforgeryTokenAuthorizationFilter.OnAuthorizationAsync(AuthorizationFilterContext context)

    The AI bot said something about adding this to the .HttpApi.Host project

       //app.Use(async (ctx, next) =>
   //{
   //    var accessToken = ctx.Request.Query["access_token"];
   //    if (!string.IsNullOrEmpty(accessToken) &&
   //        ctx.Request.Path.StartsWithSegments("/signalr-hubs/chat"))
   //    {
   //        ctx.Request.Headers["Authorization"] = "Bearer " + accessToken;
   //    }
   //    await next();
   //});

    But I'm using Blazor Server and thus not hosing the HttpApi.Host project. I don't support Bearer tokens at this point! Everything uses cookie auth I believe.

  • User Avatar
    0
    AI-Bot created
    Support Team ABP Agent
    1. Solution You’re on Blazor Server with cookie authentication, so you should NOT add the “Bearer token from access_token” middleware. That snippet is only required for SPA clients (Angular/Blazor WASM) because browsers can’t set Authorization headers for WebSockets/SSE and ABP uses access_token query for SignalR in those UIs.

    Your error indicates the antiforgery protection blocked the SignalR negotiate request. In ABP, antiforgery is automatically enforced for browser-originated POSTs, and the client sends the RequestVerificationToken header automatically when using ABP’s HTTP pipeline. However, SignalR’s negotiate POST (from the chat client component) must also include the antiforgery token. In Blazor Server, this works when:

    • The Chat Blazor UI package is installed and used in the same host as the SignalR hub (cookie auth).
    • Antiforgery middleware is the standard ABP configuration (no custom global filters interfering).
    • The negotiate POST is same-site (no gateway/proxy domain causing cross-site conditions).

    Do the following checks/fixes:

    • Ensure correct module dependencies in your Blazor Server host (single host)

      • Project YourApp.Blazor (the app you run):
        • Packages: Volo.Chat.Blazor, Volo.Chat.SignalR
        • Module class: [DependsOn(typeof(ChatBlazorModule), typeof(ChatSignalRModule))] public class YourAppBlazorModule : AbpModule { }
      • You do not need a separate HttpApi.Host when you’re running Blazor Server unified host.

    • Keep cookie auth only (no bearer conversion)

      • Remove any middleware that tries to map access_token to Authorization for /signalr-hubs/chat.
      • Cookie-based auth is enough for Blazor Server; SignalR hub will use the authenticated cookie.

    • Do not disable ABP antiforgery

      • ABP already sets XSRF-TOKEN cookie and expects RequestVerificationToken header; the built-in Blazor integration takes care of it for ABP components.
      • If you added custom [Auto/Validate]Antiforgery filters globally or changed ABP’s antiforgery options, revert to defaults.

    • Same-site and domain consistency

      • Run the Blazor Server site and the SignalR hub on the same origin (scheme+host+port). If you introduced a reverse proxy/gateway or different port/host, the negotiate POST may be treated as cross-site and blocked if the RequestVerificationToken header isn’t present or cookie isn’t sent due to SameSite rules.
      • For dev: run just the Blazor Server host; don’t front it with a gateway until it works.
      • If you must proxy, ensure cookie forwarding and SameSite=None;Secure for cookies over HTTPS.

    • Verify hub mapping and startup

      • Depending on ChatSignalRModule automatically maps the hub to /signalr-hubs/chat.
      • Check logs at app start for endpoint registration; ensure no errors.

    • Permissions and Feature are already set (you did this), but confirm the logged-in user stays authenticated during the negotiate call (no redirect/401). If your layout triggers a redirect for unauthenticated negotiate, the antiforgery error can follow.

    After aligning the above, the negotiate POST should include antiforgery automatically in Blazor Server and succeed with cookie auth, and the chat toolbar component will connect without the 400.

    1. Sources
    • https://abp.io/docs/latest/modules/chat
    • https://abp.io/docs/latest/framework/real-time/signalr
    • https://abp.io/docs/latest/framework/infrastructure/csrf-anti-forgery

    This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

  • User Avatar
    0
    brauerj@gc.adventist.org created

    I'm using [DependsOn(typeof(ChatBlazorServerModule))]. In my mind that should take care of everything mentioned above!

  • User Avatar
    0
    AI-Bot created
    Support Team ABP Agent
    1. Solution You’re right: on a unified Blazor Server host, depending on ChatBlazorServerModule should wire up the UI, API, and hub endpoints. The antiforgery error you’re seeing typically happens when the negotiate POST is treated as a normal MVC POST without the RequestVerificationToken header. In Blazor Server with cookies, ABP’s antiforgery normally works out-of-the-box. The usual causes and concrete fixes are:

    • Verify you run a single-origin Blazor Server host

      • The Blazor Server app that renders the UI must also host the chat hub at the same origin (scheme+host+port). If you’re proxying through a different host/port or a reverse proxy, the XSRF-TOKEN cookie may not be sent or recognized as same-site, causing 400.
      • Test by running your Blazor Server project directly (no gateway), then open browser devtools:
        • Confirm POST /signalr-hubs/chat/negotiate returns 200.
        • Confirm request carries cookies and response sets/has XSRF-TOKEN.

    • Don’t add the “access_token to Authorization” middleware

      • That snippet is only for SPA (Angular/Blazor WASM) using bearer tokens. You’re using cookie auth; remove that snippet if present anywhere.

    • Ensure ABP antiforgery defaults aren’t overridden

      • Remove custom/global ValidateAntiforgeryToken filters you may have added beyond ABP defaults.
      • Do not disable ABP’s application-configuration endpoint or change AntiforgeryOptions.HeaderName.
      • Make sure Configure<AbpAntiForgeryOptions> is not altered to enforce validation on non-browser clients or unexpected endpoints.

    • Confirm ChatSignalRModule is active in the same host

      • With ChatBlazorServerModule, it should already depend on SignalR and map /signalr-hubs/chat. Still, check your Blazor Server module class includes ChatBlazorServerModule:
    using Volo.Abp.Modularity;
    using Volo.Chat.Blazor.Server;

    [DependsOn(typeof(ChatBlazorServerModule))]
    public class YourAppBlazorModule : AbpModule
    {
    }

    • Check app startup logs to see endpoint mapping for /signalr-hubs/chat.

    • Check SameSite and HTTPS

      • If you’re on HTTPS and any proxying is involved, ensure cookies are not dropped due to SameSite. For cross-site scenarios you’d need SameSite=None; Secure, but the recommended approach for Blazor Server is to keep everything same-site.
      • Clear browser cookies and re-login after enabling the feature/permissions.

    • Known ASP.NET Core SignalR option on Blazor Server

      • If you have hubs with implicit FromServices parameters, set:
    Configure<Microsoft.AspNetCore.SignalR.HubOptions>(options =>
    {
        options.DisableImplicitFromServicesParameters = true;
    });

    This is a general ASP.NET Core quirk; not normally required for the Chat module, but harmless if added.

    If you align to a single Blazor Server host (no gateway), leave cookie auth only, and keep ABP antiforgery defaults, the negotiate POST will succeed and the chat toolbar component will connect without the antiforgery 400.

    1. Sources
    • https://abp.io/docs/latest/modules/chat
    • https://abp.io/docs/latest/framework/real-time/signalr
    • https://abp.io/docs/latest/framework/infrastructure/csrf-anti-forgery

    This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

  • User Avatar
    0
    maliming created
    Support Team Fullstack Developer

    hi

    How can I reproduce it in a new template project with chat modules? Can you share some steps? Do you have any custom code?

    Thanks.

Assignee
User avatar maliming
Question details
Labels
None yet
Learn More, Pay Less
33% OFF
All Trainings!
Get Your Deal
Mastering ABP Framework Book
The Official Guide
Mastering
ABP Framework
Learn More
Mastering ABP Framework Book
Made with ❤️ on ABP v10.1.0-preview. Updated on December 17, 2025, 07:08
1
ABP Assistant
🔐 You need to be logged in to use the chatbot. Please log in first.