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using System;
using System.Net;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Rewrite;
namespace StardewModdingAPI.Web.Framework.RedirectRules
{
/// <summary>Redirect requests to HTTPS.</summary>
internal class RedirectToHttpsRule : RedirectMatchRule
{
/*********
** Fields
*********/
/// <summary>Matches requests which should be ignored.</summary>
private readonly Func<HttpRequest, bool> Except;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="except">Matches requests which should be ignored.</param>
public RedirectToHttpsRule(Func<HttpRequest, bool>? except = null)
{
this.Except = except ?? (_ => false);
this.StatusCode = HttpStatusCode.RedirectKeepVerb;
}
/*********
** Protected methods
*********/
/// <summary>Get the new redirect URL.</summary>
/// <param name="context">The rewrite context.</param>
/// <returns>Returns the redirect URL, or <c>null</c> if the redirect doesn't apply.</returns>
protected override string? GetNewUrl(RewriteContext context)
{
HttpRequest request = context.HttpContext.Request;
if (request.IsHttps || this.Except(request))
return null;
UriBuilder uri = this.GetUrl(request);
uri.Scheme = "https";
return uri.ToString();
}
}
}
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