EnableRewind + StatusCodesPagesWithReExecute

EnableRewindRepro.cs

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        app.UseStatusCodePagesWithReExecute("/StatusCode/{0}");

        app.Use(async (context, next) =>
        {
            context.Request.EnableRewind();

            using (var i = new StreamReader(context.Request.Body))
            {
                try
                {
                    Debug.WriteLine(context.Request.Path);
                    context.Request.Body.Position = 0;
                    Debug.WriteLine($"Request body: {i.ReadToEnd()}");
                }
                catch (Exception e)
                {
                    Debug.WriteLine(e);
                    throw;
                }
            }

            await next.Invoke();
        });

        app.UseMvc();
    }
}