builder.Configure() stops API explorer loading

1

If I add this to a modular startup:

        builder.Configure(app =>
        {
             //empty
        });

Then I get a 404 when I visit localhost:port/ui to look at the api explorer.

I found this because I added Hangfire dashboard like so:

        builder.Configure(app =>
        {
            app.UseHangfireDashboard("/hangfire", new DashboardOptions
            {
                Authorization = new[] { new HangFireAuthorizationFilter() }
            });
        });

Then noticed the api explorer didn’t load even when I commented the inner code out.

I am using ServiceStack 6.9.0.

Any ideas what I can do to have both working together?

2

Sounds like the request is being handled before it’s able to reach ServiceStack. Is your app.UseServiceStack(new AppHost()) registered at the start of the pipeline?

3

In my program.cs I have:

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
    app.UseHttpsRedirection();
}

app.UseServiceStack(new AppHost());

app.Run();

but if I add in:

[assembly: HostingStartup(typeof(ConfigureHangfire))]
namespace Project.Configure;
public class ConfigureHangfire : IHostingStartup
{
    public void Configure(IWebHostBuilder builder)
    {

        builder.Configure(app =>
        {

        });

    }
}

Then all the ServiceStack routes like /ui and /metadata stop working. I tried making a branch with ServiceStack 8 to see if any difference but it’s the same behaviour.

4

The IHostingStartup classes are run before Program.cs so it might be hijacking the request, preventing it from reaching ServiceStack. Does it work when you configure Hangfire after ServiceStack?

app.UseServiceStack(new AppHost());
app.UseHangfireDashboard("/hangfire", new DashboardOptions
{
    Authorization = new[] { new HangFireAuthorizationFilter() }
});
5

Aha Success!

Moving it to Program.cs worked. Thanks, as always amazing support!

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