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KestrelServerOptions.cs
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KestrelServerOptions.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 System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using Microsoft.AspNetCore.Certificates.Generation;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Server.Kestrel.Https;
using Microsoft.AspNetCore.Server.Kestrel.Internal;
using Microsoft.AspNetCore.Server.Kestrel.Transport.Abstractions.Internal;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
namespace Microsoft.AspNetCore.Server.Kestrel.Core
{
/// <summary>
/// Provides programmatic configuration of Kestrel-specific features.
/// </summary>
public class KestrelServerOptions
{
/// <summary>
/// Configures the endpoints that Kestrel should listen to.
/// </summary>
/// <remarks>
/// If this list is empty, the server.urls setting (e.g. UseUrls) is used.
/// </remarks>
internal List<ListenOptions> ListenOptions { get; } = new List<ListenOptions>();
/// <summary>
/// Gets or sets whether the <c>Server</c> header should be included in each response.
/// </summary>
/// <remarks>
/// Defaults to true.
/// </remarks>
public bool AddServerHeader { get; set; } = true;
/// <summary>
/// Gets or sets a value that determines how Kestrel should schedule user callbacks.
/// </summary>
/// <remarks>The default mode is <see cref="SchedulingMode.Default"/></remarks>
#pragma warning disable PUB0001 // Pubternal type in public API
public SchedulingMode ApplicationSchedulingMode { get; set; } = SchedulingMode.Default;
#pragma warning restore PUB0001 // Pubternal type in public API
/// <summary>
/// Gets or sets a value that controls whether synchronous IO is allowed for the <see cref="HttpContext.Request"/> and <see cref="HttpContext.Response"/>
/// </summary>
/// <remarks>
/// Defaults to true.
/// </remarks>
public bool AllowSynchronousIO { get; set; } = true;
/// <summary>
/// Enables the Listen options callback to resolve and use services registered by the application during startup.
/// Typically initialized by UseKestrel()"/>.
/// </summary>
public IServiceProvider ApplicationServices { get; set; }
/// <summary>
/// Provides access to request limit options.
/// </summary>
public KestrelServerLimits Limits { get; } = new KestrelServerLimits();
/// <summary>
/// Provides a configuration source where endpoints will be loaded from on server start.
/// The default is null.
/// </summary>
public KestrelConfigurationLoader ConfigurationLoader { get; set; }
/// <summary>
/// A default configuration action for all endpoints. Use for Listen, configuration, the default url, and URLs.
/// </summary>
private Action<ListenOptions> EndpointDefaults { get; set; } = _ => { };
/// <summary>
/// A default configuration action for all https endpoints.
/// </summary>
private Action<HttpsConnectionAdapterOptions> HttpsDefaults { get; set; } = _ => { };
/// <summary>
/// The default server certificate for https endpoints. This is applied lazily after HttpsDefaults and user options.
/// </summary>
internal X509Certificate2 DefaultCertificate { get; set; }
/// <summary>
/// Has the default dev certificate load been attempted?
/// </summary>
internal bool IsDevCertLoaded { get; set; }
/// <summary>
/// Specifies a configuration Action to run for each newly created endpoint. Calling this again will replace
/// the prior action.
/// </summary>
public void ConfigureEndpointDefaults(Action<ListenOptions> configureOptions)
{
EndpointDefaults = configureOptions ?? throw new ArgumentNullException(nameof(configureOptions));
}
internal void ApplyEndpointDefaults(ListenOptions listenOptions)
{
listenOptions.KestrelServerOptions = this;
ConfigurationLoader?.ApplyConfigurationDefaults(listenOptions);
EndpointDefaults(listenOptions);
}
/// <summary>
/// Specifies a configuration Action to run for each newly created https endpoint. Calling this again will replace
/// the prior action.
/// </summary>
public void ConfigureHttpsDefaults(Action<HttpsConnectionAdapterOptions> configureOptions)
{
HttpsDefaults = configureOptions ?? throw new ArgumentNullException(nameof(configureOptions));
}
internal void ApplyHttpsDefaults(HttpsConnectionAdapterOptions httpsOptions)
{
HttpsDefaults(httpsOptions);
}
internal void ApplyDefaultCert(HttpsConnectionAdapterOptions httpsOptions)
{
if (httpsOptions.ServerCertificate != null || httpsOptions.ServerCertificateSelector != null)
{
return;
}
EnsureDefaultCert();
httpsOptions.ServerCertificate = DefaultCertificate;
}
private void EnsureDefaultCert()
{
if (DefaultCertificate == null && !IsDevCertLoaded)
{
IsDevCertLoaded = true; // Only try once
var logger = ApplicationServices.GetRequiredService<ILogger<KestrelServer>>();
try
{
var certificateManager = new CertificateManager();
DefaultCertificate = certificateManager.ListCertificates(CertificatePurpose.HTTPS, StoreName.My, StoreLocation.CurrentUser, isValid: true)
.FirstOrDefault();
if (DefaultCertificate != null)
{
logger.LocatedDevelopmentCertificate(DefaultCertificate);
}
else
{
logger.UnableToLocateDevelopmentCertificate();
}
}
catch
{
logger.UnableToLocateDevelopmentCertificate();
}
}
}
/// <summary>
/// Creates a configuration loader for setting up Kestrel.
/// </summary>
public KestrelConfigurationLoader Configure()
{
var loader = new KestrelConfigurationLoader(this, new ConfigurationBuilder().Build());
ConfigurationLoader = loader;
return loader;
}
/// <summary>
/// Creates a configuration loader for setting up Kestrel that takes an IConfiguration as input.
/// This configuration must be scoped to the configuration section for Kestrel.
/// </summary>
public KestrelConfigurationLoader Configure(IConfiguration config)
{
var loader = new KestrelConfigurationLoader(this, config);
ConfigurationLoader = loader;
return loader;
}
/// <summary>
/// Bind to given IP address and port.
/// </summary>
public void Listen(IPAddress address, int port)
{
Listen(address, port, _ => { });
}
/// <summary>
/// Bind to given IP address and port.
/// The callback configures endpoint-specific settings.
/// </summary>
public void Listen(IPAddress address, int port, Action<ListenOptions> configure)
{
if (address == null)
{
throw new ArgumentNullException(nameof(address));
}
Listen(new IPEndPoint(address, port), configure);
}
/// <summary>
/// Bind to given IP endpoint.
/// </summary>
public void Listen(IPEndPoint endPoint)
{
Listen(endPoint, _ => { });
}
/// <summary>
/// Bind to given IP address and port.
/// The callback configures endpoint-specific settings.
/// </summary>
public void Listen(IPEndPoint endPoint, Action<ListenOptions> configure)
{
if (endPoint == null)
{
throw new ArgumentNullException(nameof(endPoint));
}
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var listenOptions = new ListenOptions(endPoint);
ApplyEndpointDefaults(listenOptions);
configure(listenOptions);
ListenOptions.Add(listenOptions);
}
/// <summary>
/// Listens on ::1 and 127.0.0.1 with the given port. Requesting a dynamic port by specifying 0 is not supported
/// for this type of endpoint.
/// </summary>
public void ListenLocalhost(int port) => ListenLocalhost(port, options => { });
/// <summary>
/// Listens on ::1 and 127.0.0.1 with the given port. Requesting a dynamic port by specifying 0 is not supported
/// for this type of endpoint.
/// </summary>
public void ListenLocalhost(int port, Action<ListenOptions> configure)
{
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var listenOptions = new LocalhostListenOptions(port);
ApplyEndpointDefaults(listenOptions);
configure(listenOptions);
ListenOptions.Add(listenOptions);
}
/// <summary>
/// Listens on all IPs using IPv6 [::], or IPv4 0.0.0.0 if IPv6 is not supported.
/// </summary>
public void ListenAnyIP(int port) => ListenAnyIP(port, options => { });
/// <summary>
/// Listens on all IPs using IPv6 [::], or IPv4 0.0.0.0 if IPv6 is not supported.
/// </summary>
public void ListenAnyIP(int port, Action<ListenOptions> configure)
{
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var listenOptions = new AnyIPListenOptions(port);
ApplyEndpointDefaults(listenOptions);
configure(listenOptions);
ListenOptions.Add(listenOptions);
}
/// <summary>
/// Bind to given Unix domain socket path.
/// </summary>
public void ListenUnixSocket(string socketPath)
{
ListenUnixSocket(socketPath, _ => { });
}
/// <summary>
/// Bind to given Unix domain socket path.
/// Specify callback to configure endpoint-specific settings.
/// </summary>
public void ListenUnixSocket(string socketPath, Action<ListenOptions> configure)
{
if (socketPath == null)
{
throw new ArgumentNullException(nameof(socketPath));
}
if (socketPath.Length == 0 || socketPath[0] != '/')
{
throw new ArgumentException(CoreStrings.UnixSocketPathMustBeAbsolute, nameof(socketPath));
}
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var listenOptions = new ListenOptions(socketPath);
ApplyEndpointDefaults(listenOptions);
configure(listenOptions);
ListenOptions.Add(listenOptions);
}
/// <summary>
/// Open a socket file descriptor.
/// </summary>
public void ListenHandle(ulong handle)
{
ListenHandle(handle, _ => { });
}
/// <summary>
/// Open a socket file descriptor.
/// The callback configures endpoint-specific settings.
/// </summary>
public void ListenHandle(ulong handle, Action<ListenOptions> configure)
{
if (configure == null)
{
throw new ArgumentNullException(nameof(configure));
}
var listenOptions = new ListenOptions(handle);
ApplyEndpointDefaults(listenOptions);
configure(listenOptions);
ListenOptions.Add(listenOptions);
}
}
}