How do you enable cross-origin requests (CORS) in ASP.NET Core MVC

Question

I\'d like to enable CORS on an API built with ASP.NET Core MVC, but all the current documents refer to earlier versions of that framework.

Answer 1

In the most recent RC2 of ASP.NET Core.

The NuGet packages are

"Microsoft.AspNetCore.Owin": "1.0.0-rc2-final",
"Microsoft.AspNetCore.Cors": "1.0.0-rc2-final",

In Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddCors();
    services.AddMvc();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    loggerFactory.AddConsole(Configuration.GetSection("Logging"));
    loggerFactory.AddDebug();

    app.UseCors(builder =>  builder
    .AllowAnyOrigin());
    app.UseMvc();
}