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CorsServiceCollectionExtensions.cs
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CorsServiceCollectionExtensions.cs
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// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using Microsoft.AspNetCore.Cors.Infrastructure;
using Microsoft.Extensions.DependencyInjection.Extensions;
namespace Microsoft.Extensions.DependencyInjection
{
/// <summary>
/// Extension methods for setting up cross-origin resource sharing services in an <see cref="IServiceCollection" />.
/// </summary>
public static class CorsServiceCollectionExtensions
{
/// <summary>
/// Adds cross-origin resource sharing services to the specified <see cref="IServiceCollection" />.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection" /> to add services to.</param>
/// <returns>The <see cref="IServiceCollection"/> so that additional calls can be chained.</returns>
public static IServiceCollection AddCors(this IServiceCollection services)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
services.AddOptions();
services.TryAdd(ServiceDescriptor.Transient<ICorsService, CorsService>());
services.TryAdd(ServiceDescriptor.Transient<ICorsPolicyProvider, DefaultCorsPolicyProvider>());
return services;
}
/// <summary>
/// Adds cross-origin resource sharing services to the specified <see cref="IServiceCollection" />.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection" /> to add services to.</param>
/// <param name="setupAction">An <see cref="Action{CorsOptions}"/> to configure the provided <see cref="CorsOptions"/>.</param>
/// <returns>The <see cref="IServiceCollection"/> so that additional calls can be chained.</returns>
public static IServiceCollection AddCors(this IServiceCollection services, Action<CorsOptions> setupAction)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (setupAction == null)
{
throw new ArgumentNullException(nameof(setupAction));
}
services.AddCors();
services.Configure(setupAction);
return services;
}
}
}