CODEWITHSUNDEEP
asp.net-mvcazureweb-confighttp-redirect
under
under

Reputation: 3067

301 redirect in Azure ASP.Net Core website

Google is getting confused about which page to index, even though it is all nicely explained in the sitemap.

I created a redirect rule in web.config to redirect traffic from naked to www and this works great

 <rule name="Redirect to www" patternSyntax="Wildcard" stopProcessing="true">
        <match url="*" />
        <conditions>
          <add input="{HTTP_HOST}" pattern="example.com" />
        </conditions>
        <action type="Redirect" url="https://www.example.com/{R:0}" redirectType="Permanent" />
      </rule>

I am trying to create a second rule to redirect domain/home/index and domain/index to root but am not able to. Below doesn't work. I tried a few variations with different regex in pattern fields, but nothing is working. 

    <rule name="Redirect index" patternSyntax="Wildcard" stopProcessing="true">
      <match url="*" />
      <conditions>
        <add input="{HTTP_HOST}" pattern="example.com/home/index" />
      </conditions>
      <action type="Redirect" url="https://www.example.com/" redirectType="Permanent" />
    </rule>

Upvotes: 2

Views: 5682

Answers (3)

Ondrej Rozinek
Ondrej Rozinek

Reputation: 601

In ASP .NET Core 3.1 I have used successfully quite simple lines of code to redirect non-www to www by utilizing:

using Microsoft.AspNetCore.Rewrite;

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {

        // redirect non-www to www website 
        app.UseRewriter(new RewriteOptions()
            .AddRedirectToWww()
        );

RewriteOptions should have possible list of custom rules as mentioned in another posts.

I refer to the official Microsoft Doc URL Rewriting Middleware in ASP.NET Core where is explained in details.

Upvotes: 2

Lee Liu
Lee Liu

Reputation: 2091

In ASP.NET Core(MVC6), we can use custom Middle Ware to achieve this.

Here is a simple demo for your reference.

First, create a Middle Ware class. According to your requirement, i have created it for you as below:

using ASPNETCore.Test;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace ASPNETCore.Middleware
{
    public class MyMiddleware
    {
        private RequestDelegate _nextDelegate;
        private IServiceProvider _serviceProvider;

        public MyMiddleware(RequestDelegate nextDelegate, IServiceProvider serviceProvider)
        {
            _nextDelegate = nextDelegate;
            _serviceProvider = serviceProvider;        
        }

        public async Task Invoke(HttpContext httpContext)
        {
            string requestURL = httpContext.Request.Path.ToString().ToLower();

            //redirect domain/home/index and domain/home to domain
            if (requestURL.Contains("/home/index")||requestURL.EndsWith("/home"))
            {
                httpContext.Response.Redirect("/");
            }
            // redirect domain/home/something  to domain/something
            else if (requestURL.Contains("/home/"))
            {
                Regex reg = new Regex("/home/(.+)");
                Match match = reg.Match(requestURL);
                string value = match.Groups[1].Value;
                httpContext.Response.Redirect("/"+ value);
            }else{

                await _nextDelegate.Invoke(httpContext);
            }

        }
    }
}

Then we can use it in Configure method in Startup class as below:

enter image description here

I have tested it and it worked. Hope this would be helpful.

Upvotes: 3

under
under

Reputation: 3067

This did the trick. This converts URL to lowercase, redirects domain/home/index and domain/home to domain and domain/home/something to domain/something. Also adds www to naked domain.

Perhaps this should be a default behaviour?

Please let me know if there's a better way

<rewrite>
  <rules>
    <rule name="Convert to lower case" stopProcessing="false">
      <match url=".*[A-Z].*" ignoreCase="false" />
      <action type="Redirect" url="{ToLower:{R:0}}" redirectType="Permanent" />
    </rule>
    <rule name="Redirect index" patternSyntax="Wildcard" stopProcessing="true">
      <match url="home/index" />
      <action type="Redirect" url="https://www.example.com" redirectType="Permanent" />
    </rule>
    <rule name="Redirect home" patternSyntax="Wildcard" stopProcessing="true">
      <match url="home" />
      <action type="Redirect" url="https://www.example.com" redirectType="Permanent" />
    </rule>
    <rule name="Redirect home2" patternSyntax="Wildcard" stopProcessing="true">
      <match url="home/*" />
      <action type="Redirect" url="https://www.example.com/{R:1}" redirectType="Permanent" />
    </rule>
    <rule name="Redirect to www" patternSyntax="Wildcard" stopProcessing="true">
      <match url="*" />
      <conditions>
        <add input="{HTTP_HOST}" pattern="^example.com" />
      </conditions>
      <action type="Redirect" url="https://www.example.com/{R:0}" redirectType="Permanent" />
    </rule>
  </rules>

Upvotes: 1

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