Add new route constraint in .net5/vNext/MVC6

Question

In .NET 4.5 / WebApi 2, i could create a constraint and add it using this code

// add constraint resolvers
var constraintResolver = new DefaultInlineConstraintResolver();
constraintResolver.ConstraintMap.Add("constraintName", typeof(MyCustomConstraint));

// routing
config.MapHttpAttributeRoutes(constraintResolver);

Currently in my Startup.cs file, i just have this

public void Configure(IApplicationBuilder app, IServiceProvider serviceProvider)
    {
        // Enable Mvc for controllers
        app.UseMvc();

        // Enable all static file middleware (serving of static files and default files) EXCEPT directory browsing.
        app.UseFileServer();
    }

But i cannot figure out where to do this i asp.net 5/vNext. Can someone please help? I am using attribute routing on all my controllers

Answer 1

You can register in the ConfigureServices section of the Startup class.

    public virtual IServiceProvider ConfigureServices(IServiceCollection services)
    {

        services.Configure<RouteOptions>(options =>
                                        options
                                        .ConstraintMap
                                        .Add("constraintName", typeof(MyCustomConstraint)));
    }