Use status code constants

src/Microsoft.AspNetCore.Rewrite/Internal/IISUrlRewrite/RedirectType.cs

@@ -1,13 +1,15 @@
 // 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 Microsoft.AspNetCore.Http;
+
 namespace Microsoft.AspNetCore.Rewrite.Internal.IISUrlRewrite
 {
     public enum RedirectType
     {
-        Permanent = 301,
-        Found = 302,
-        SeeOther = 303,
-        Temporary = 307
+        Permanent = StatusCodes.Status301MovedPermanently,
+        Found = StatusCodes.Status302Found,
+        SeeOther = StatusCodes.Status303SeeOther,
+        Temporary = StatusCodes.Status307TemporaryRedirect
     }
 }

src/Microsoft.AspNetCore.Rewrite/Internal/UrlActions/RedirectAction.cs

@@ -75,7 +75,7 @@ namespace Microsoft.AspNetCore.Rewrite.Internal.UrlActions
                     QueryString.FromUriComponent(
                         pattern.Substring(split)));
 
-                // not using the response.redirect here because status codes may be 301, 302, 307, 308 
+                // not using the response.redirect here because status codes may be 301, 302, 307, 308
                 response.Headers[HeaderNames.Location] = pathBase + pattern.Substring(0, split) + query;
             }
             else

src/Microsoft.AspNetCore.Rewrite/RewriteOptionsExtensions.cs

@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Rewrite.Internal;
 
 namespace Microsoft.AspNetCore.Rewrite
@@ -58,7 +59,7 @@ namespace Microsoft.AspNetCore.Rewrite
         /// <returns>The Rewrite options.</returns>
         public static RewriteOptions AddRedirect(this RewriteOptions options, string regex, string replacement)
         {
-            return AddRedirect(options, regex, replacement, statusCode: 302);
+            return AddRedirect(options, regex, replacement, statusCode: StatusCodes.Status302Found);
         }
 
         /// <summary>
@@ -83,7 +84,7 @@ namespace Microsoft.AspNetCore.Rewrite
         /// <returns></returns>
         public static RewriteOptions AddRedirectToHttpsPermanent(this RewriteOptions options)
         {
-            return AddRedirectToHttps(options, statusCode: 301, sslPort: null);
+            return AddRedirectToHttps(options, statusCode: StatusCodes.Status301MovedPermanently, sslPort: null);
         }
 
         /// <summary>
@@ -92,7 +93,7 @@ namespace Microsoft.AspNetCore.Rewrite
         /// <param name="options">The <see cref="RewriteOptions"/>.</param>
         public static RewriteOptions AddRedirectToHttps(this RewriteOptions options)
         {
-            return AddRedirectToHttps(options, statusCode: 302, sslPort: null);
+            return AddRedirectToHttps(options, statusCode: StatusCodes.Status302Found, sslPort: null);
         }
 
         /// <summary>

test/Microsoft.AspNetCore.Rewrite.Tests/ApacheModRewrite/ModRewriteMiddlewareTest.cs

@@ -247,7 +247,7 @@ namespace Microsoft.AspNetCore.Rewrite.Tests.ModRewrite
             var response = await server.CreateClient().GetAsync(input);
 
             Assert.Equal(response.StatusCode, (HttpStatusCode)301);
-            Assert.Equal(response.Headers.Location.AbsoluteUri, @"https://www.example.com/foo/");
+            Assert.Equal(@"https://www.example.com/foo/", response.Headers.Location.AbsoluteUri);
         }
 
         [Theory]

test/Microsoft.AspNetCore.Rewrite.Tests/MiddlewareTests.cs

@@ -38,7 +38,7 @@ namespace Microsoft.AspNetCore.Rewrite.Tests.CodeRules
         [Fact]
         public async Task CheckRedirectPath()
         {
-            var options = new RewriteOptions().AddRedirect("(.*)","http://example.com/$1", statusCode: 301);
+            var options = new RewriteOptions().AddRedirect("(.*)","http://example.com/$1", statusCode: StatusCodes.Status301MovedPermanently);
             var builder = new WebHostBuilder()
             .Configure(app =>
             {
@@ -54,7 +54,7 @@ namespace Microsoft.AspNetCore.Rewrite.Tests.CodeRules
         [Fact]
         public async Task CheckRedirectToHttps()
         {
-            var options = new RewriteOptions().AddRedirectToHttps(statusCode: 301);
+            var options = new RewriteOptions().AddRedirectToHttps(statusCode: StatusCodes.Status301MovedPermanently);
             var builder = new WebHostBuilder()
             .Configure(app =>
             {
@@ -71,7 +71,7 @@ namespace Microsoft.AspNetCore.Rewrite.Tests.CodeRules
         [Fact]
         public async Task CheckIfEmptyStringRedirectCorrectly()
         {
-            var options = new RewriteOptions().AddRedirect("(.*)", "$1", statusCode: 301);
+            var options = new RewriteOptions().AddRedirect("(.*)", "$1", statusCode: StatusCodes.Status301MovedPermanently);
             var builder = new WebHostBuilder()
             .Configure(app =>
             {