How to redirect to https and also add www. in front of the link

Question

I am trying to redirect to https

I used the code below in Global.asax

protected void Application_BeginRequest()
{
    if (!Context.Request.IsSecureConnection)
        Response.Redirect(Context.Request.Url.ToString().Replace("http:", "https:"));
}

but my problem is that I have to add www in front of link, ie mywesite.se and after redirecting to https its like https://mywebsite.se but I want it like https://www.mywebsite.se

Answer 1

Use UriBuilder :

var url = Context.Request.Url;
var builder = new UriBuilder(url);
builder.Scheme = "https";
if (!url.Host.StartsWith("www"))
   builder.Host = "www." + url.Host;

Response.Redirect(builder.Uri);

Disclaimer: I didn't test this code.

Answer 2

You can add rewrite rule in web.config

<rewrite>
    <rules>
        <clear />
        <rule name="Redirect non-www OR non-https to https://www">
            <match url=".*" />
            <conditions logicalGrouping="MatchAny">
                <add input="{HTTP_HOST}" pattern="^mywebsite.se$" />
                <add input="{HTTPS}" pattern="off" />
            </conditions>
            <action type="Redirect" url="https://www.mywebsite.se/{R:0}" redirectType="Permanent"/>
        </rule>
    </rules>
</rewrite>

Answer 3

Here you go (write into web.config file)

void Application_BeginRequest(object sender, EventArgs e)
{
    string lowerCaseURL = HttpContext.Current.Request.Url.ToString().ToLower();
    if (lowerCaseURL.IndexOf("http://dotnetfunda.com") >= 0) // >=  because http starts from the 0 position : )
    {
        lowerCaseURL = lowerCaseURL.Replace("http://dotnetfunda.com", "https://www.dotnetfunda.com");

        HttpContext.Current.Response.StatusCode = 301;
        HttpContext.Current.Response.AddHeader("location", lowerCaseURL);
        HttpContext.Current.Response.End();
    }
}

Replace dotnetfunda.com to yourwebsitedomainname.se

Thanks