Aspnetcore: Redirect non-www to www rule.

[mkarlsson]

Do we still use the rewrite rules in web.config for forwarding users to www instead of non-www domains?

[davidfowl]

Yes, you can use rewrite rules like you've been using in the past.

[mkarlsson]

Is there any better solution? I'm not very found of the format.. When adding rewrite rule to web.config and switching between staging and production I miss the old config transforms.

[cwe1ss]

But web.config rewrite rules only work for IIS based hosting and not on Kestrel, right?

[mkarlsson]

@cwe1ss Guss so. I have this on my core 1.0 RC1 on azure website and it works but thats because the rewritemodule is preinstalled on AzureApp service IIS.

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

[Tratcher]

Done with middleware:

c# app.Use((context, next) => { var request = context.Request; var host = request.Host; if (host.Host.Equals("mysite.com", StringComparison.OrdinalIgnoreCase)) { HostString newHost; if (host.Port.HasValue) { newHost = new HostString("www.mysite.com", host.Port.Value); } else { newHost = new HostString("www.mysite.com"); } context.Response.Redirect(UriHelper.Encode(request.Scheme, newHost, request.PathBase, request.Path, request.QueryString)); return Task.FromResult(0); } return next(); });

[cwe1ss]

Thanks for sharing! I still hope though, @davidfowl will find an intern who will rewrite iis-urlrewrite as a middleware :-)

[nj]

@cwe1ss Seen this starting point?
https://aspdotnet5.wordpress.com/2015/12/10/my-first-asp-net-5-middleware-urlrewrite/

[jrapolu]

We have website developed in MVC 4+AngularJS and deployed on Azure. We are trying to redirect from non-www to www custom domain. But we didn't get break through. Home page only redirecting all other pages are not.

@Tratcher how to build middleware with out using Asp.net core. Currently we are using web.cofig entries but it's not working for deep links. Please help us on this issue.

[Tratcher]

@jrapolu what web.config settings are you using?

[jrapolu]

@Tratcher I'm using below web.config settings and I have enabled HTML5Mode ($locationProvider.html5Mode(true); ) for my angularjs and ASP.Net MVC 4 application..
Working - http://domain.com -> http;//www.domain.com
Not working - http://domain.com/contact -> http;//www.domain.com/contact
Please help me and let me know any questions.

<rule name="Redirect to www - http" stopProcessing="true">
  <match url="(.*)" />
  <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
    <add input="{HTTP_HOST}" pattern="^domain.com$" />
    <add input="{HTTPS}" pattern="off" />
  </conditions>
  <action type="Redirect" url="http://www.domain.com/{R:1}" />
</rule>
<rule name="Redirect to www - https" stopProcessing="true">
  <match url="(.*)" />
  <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
    <add input="{HTTP_HOST}" pattern="^domain.com$" />
    <add input="{HTTPS}" pattern="on" />
  </conditions>
  <action type="Redirect" url="https://www.domain.com/{R:1}" />
</rule>

[Tratcher]

@mikaelm12 that looks right doesn't it? or should trackAllCaptures be true?

[Tratcher]

Actually, if you look at the earlier sample it should be {R:0}.

[mikaelm12]

Yeah, the rule captures are 0 indexed. It should be {R:0} . trackAllCaptures only applies to the matches in the conditions

[jrapolu]

Tried below syntax as well. But No luck.

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

[Tratcher]

@mikaelm12 can you try this in the middleware to see if you get a similar result?

[BrennanConroy]

That rule looks broken. I think it should be something like:

<match url="http://(www.)*(.*)" />
<conditions>
    <add input="{HTTP_HOST}" pattern="domain.com" />
</conditions>
<action type="Redirect" url="http://www.domain.com/{R:2}" />

[jrapolu]

Thanks @BrennanConroy. Rule is now working fine for home page. But not working for http://domain.com/contact page.

[jrapolu]

Tried below settings. But No luck. Please let me know complete settings. Below mentioned actual Url for testing.

<rule name="Redirect dev-lh.com to www" patternSyntax="Wildcard" stopProcessing="true">
    <match url="http://(www.)*(.*)" />
    <conditions>
        <add input="{HTTP_HOST}" pattern="dev-lh.com" />
    </conditions>
    <action type="Redirect" url="http://www.dev-lh.com/{R:2}" />
        </rule>

[nj]

patternSyntax vs the actual pattern in the match, doesn't compute

[jrapolu]

@nj please provide me the full rule syntax to redirect non-www to www in web.config.

[jrapolu]

I will rephrase my question. @Tratcher @mikaelm12 @nj @BrennanConroy please suggest the solution.
I'm using below web.config settings and I have enabled HTML5Mode ($locationProvider.html5Mode(true); ) for my angularjs and ASP.Net MVC 4 application.

Working - http://devlivhigh.com -> http://www.devlivhigh.com
Not working - http://devlivhigh.com/contact -> http://www.devlivhigh.com/contact
It's working only for home page and not redirecting for any child page.

<rule name="Redirect to WWW site">
          <match url=".*" />
          <conditions logicalGrouping="MatchAny">
            <add input="{HTTP_HOST}" pattern="^(www\.)(.*)$" negate="true" />
          </conditions>
          <action type="Redirect" url="http://www.{HTTP_HOST}/{R:0}" redirectType="Permanent" />
 </rule>

[jrapolu]

Issue was solved. I was having redirect rule after rewrite rule which was causing the issue.
Changed the order of the rules and started working fine.

[davidfowl]

Thanks for sharing! I still hope though, @davidfowl will find an intern who will rewrite iis-urlrewrite as a middleware :-)

We did https://github.com/aspnet/BasicMiddleware/tree/dev/src/Microsoft.AspNetCore.Rewrite