rdt-client/server/RdtClient.Service/Middleware/ExceptionMiddlewareExtensions.cs

using System;
using System.Net;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics;
using Microsoft.AspNetCore.Http;

namespace RdtClient.Service.Middleware
{
    public static class ExceptionMiddlewareExtensions
    {
        public static void ConfigureExceptionHandler(this IApplicationBuilder app)
        {
            app.UseExceptionHandler(appError =>
            {
                appError.Run(async context =>
                {
                    context.Response.StatusCode = (Int32) HttpStatusCode.InternalServerError;
                    context.Response.ContentType = "application/json";

                    var contextFeature = context.Features.Get<IExceptionHandlerFeature>();
                    if (contextFeature != null)
                    {
                        await context.Response.WriteAsync(contextFeature.Error.Message);
                    }
                });
            });
        }
    }
}