Yesterday I managed to have my API working on my local computer, however today (same code) on another computer, it's not working, I am getting this error on the console:
Failed to load http://localhost:52056/api/task: The 'Access-Control-Allow-Origin' header has a value 'null' that is not equal to the supplied origin. Origin 'null' is therefore not allowed access.
Here is the http request and response on Chrome:
(I don't see errors in IE/Firefox)
Here is my startup class (using .net core 2)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using TodoApi;
namespace TestCors
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddSingleton<ITaskWarehouse, TaskWarehouse>();
services.AddCors();
services.AddMvc();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseCors(builder => builder
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
app.UseMvc();
}
}
}
What is wrong here? The code is the same from yesterday, however I was running on Windows 10 and this machine has Windows 7. Any thoughts? Thanks
