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jellyfin/MediaBrowser.Common/Extensions/HttpContextExtensions.cs

42 lines
1.5 KiB

using System.Net;
using Microsoft.AspNetCore.Http;
namespace MediaBrowser.Common.Extensions
{
/// <summary>
/// Static class containing extension methods for <see cref="HttpContext"/>.
/// </summary>
public static class HttpContextExtensions
{
/// <summary>
/// Checks the origin of the HTTP context.
/// </summary>
/// <param name="context">The incoming HTTP context.</param>
/// <returns><c>true</c> if the request is coming from LAN, <c>false</c> otherwise.</returns>
public static bool IsLocal(this HttpContext context)
{
return (context.Connection.LocalIpAddress is null
&& context.Connection.RemoteIpAddress is null)
|| Equals(context.Connection.LocalIpAddress, context.Connection.RemoteIpAddress);
}
/// <summary>
/// Extracts the remote IP address of the caller of the HTTP context.
/// </summary>
/// <param name="context">The HTTP context.</param>
/// <returns>The remote caller IP address.</returns>
public static IPAddress GetNormalizedRemoteIP(this HttpContext context)
{
// Default to the loopback address if no RemoteIpAddress is specified (i.e. during integration tests)
var ip = context.Connection.RemoteIpAddress ?? IPAddress.Loopback;
if (ip.IsIPv4MappedToIPv6)
{
ip = ip.MapToIPv4();
}
return ip;
}
}
}