Redirect URL A to URL B

Question

I want to redirect one URL to the another. Suppose, I have 2 URLs

1. www.abc.com/home/gateway [Item for /gateway is not created in sitecore]
2. www.xyz.com/newgateway.php [This is not a Sitecore Webpage]

So, here I want to redirect URL 1 to URL 2. In URL 1, /gateway item is not created but here I want if anybody hits that exact URL 1 it automatically redirected to URL 2.

I tried the IIS URL Rewrite module, it is not working correctly showing 404 Sitecore Error.

My Rule:

<rewrite>
    <rules>
        <rule name="My Rewrite" enabled="true" stopProcessing="true">
            <match url="/home/gateway" />
            <action type="Rewrite" url="www.xyz.com/newgateway.php" />
        </rule>
    </rules>
</rewrite>

Answer 1

As an alternative you can write your own processor. For example like you would create a 404 processor, but then let it hook into a Sitecore list where you map url's to external links.

Like:

public class NotFoundRedirectProcessor: HttpRequestProcessor
{
    public override void Process(HttpRequestArgs args)
    {
        if (Sitecore.Context.Item != null || Sitecore.Context.Site == null)
        {
            return;
        }

        if (string.Equals(Sitecore.Context.Site.Properties["enableCustomErrors"], "true", StringComparison.OrdinalIgnoreCase) == false)
        {
            return;
        }

        var redirectUrl = GetRedirectUrl(args);
        if (redirectUrl  != null)
        {
          WebUtil.Redirect(redirectUrl, false);
          args.AbortPipeline();
        }

        var pageNotFound = this.Get404PageItem();
        args.ProcessorItem = pageNotFound;
        Sitecore.Context.Item = pageNotFound;
    }

    protected Item Get404PageItem()
    {
        // This is largely up to how the project in general is setup.
        // My solutions are heavily Fortis dependent, but for Vanilla 
        // Sitecore setups you could just use the following setting:
        // Settings.GetSetting("ItemNotFoundUrl", "/errors/404");
        // and pull the Item object from that path

        var path = Sitecore.Context.Site.RootPath + "/" + Settings.GetSetting("ItemNotFoundUrl", "/errors/404");
        var item = Sitecore.Context.Database.GetItem(path);

        return item;
    } 

    private string GetRedirectUrl(HttpRequestArgs args)
    {  
      //Add your code here to resolve from your Sitecore list the right url to redirect to
    }
}

Answer 2

I would recommend using the Sitecore Url Rewrite module which allows you to configure IIS Url Rewrites in Sitecore items.