So it seems like Blazor does not currently support checking for an authentication timeout through inactivity using sliding expiration scheme.
what I am trying to achieve is to redirect user to login page once they had a session time. I can imagine that it has to be something in RevalidatingIdentityAuthenticationStateProvider where I need to detect activity on the site and redirect the user on the login page if the session has timeout but not sure how can I achieve this?
you don't actually need to use
RevalidatingIdentityAuthenticationStateProvider
your app.razor just needs to look like this code:
<CascadingAuthenticationState>
<Router AppAssembly="@typeof(Program).Assembly">
<Found Context="routeData">
<AuthorizeRouteView RouteData="@routeData"
DefaultLayout="@typeof(MainLayout)">
<NotAuthorized>
**<RedirectToLogin> </RedirectToLogin>**
</NotAuthorized>
<Authorizing>
<h1>Authentication in progress</h1>
<p>Only visible while authentication is in progress.</p>
</Authorizing>
</AuthorizeRouteView>
</Found>
<NotFound>
....
</NotFound>
</Router>
</CascadingAuthenticationState>
make sure that RedirectToLogin component redirect the user OnAfterRender callback should looks something like this
[CascadingParameter]
private Task<AuthenticationState> AuthenticationStateTask { get; set; }
protected override async Task OnAfterRenderAsync(bool firstRender)
{
var authenticationState = await AuthenticationStateTask;
try
{
if (authenticationState?.User?.Identity is null || !authenticationState.User.Identity.IsAuthenticated)
{
var returnUrl = Navigation.ToBaseRelativePath(Navigation.Uri);
if (string.IsNullOrWhiteSpace(returnUrl))
Navigation.NavigateTo("/Identity/Account/Login", true);
else
Navigation.NavigateTo($"/Identity/Account/Login?returnUrl=~/{returnUrl}", true);
}
}
catch (Exception e)
{
}
}