Windows Server Redirect Issue

I am dealing with some client's that use Windows servers and as such do not support .htaccess files. This is not a huge deal but, my concern is this:

I have a rule set up in my .htaccess file to redirect the non-www version of the site to the www version. This makes the URL's look nicer and prevents duplicate content being indexed.

However, there does not seem to be a simple way to开发者_开发问答 do this on a Windows server. I have read through tutorials on setting up a web.config file but, my Windows server experience is very limited and many times I only have FTP access to the site (no server access).

Any ideas on a quick and fairly simple solution, that I could use?

Create web.config (in the root directory) file with the next content:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
     <modules runAllManagedModulesForAllRequests="true" />
        <rewrite>
            <rules>
                <rule name="CanonicalHostNameRule" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions>
                        <add input="{HTTP_HOST}" pattern="^www\.domain\.com$" negate="true" />
                    </conditions>
                    <action type="Redirect" url="http://www.domain.com/{R:1}" />
                </rule>
            </rules>
        </rewrite>
  </system.webServer>
</configuration>

The URL Rewrite Module (at least version 2.0) has to be installed.

To use custom module create file CanonicalRedirectModule.cs in folder App_Code it the root folder of the Web Site Application with next content:

using System;
using System.Web;

public class CanonicalRedirectModule : IHttpModule
{
    public const string configKeyCanonicalHostName = "CanonicalHostName";

    private string configCanonicalHostName;

    #region IHttpModule Members

    public void Dispose()
    {
    }

    public void Init(HttpApplication context)
    {
        this.configCanonicalHostName = System.Configuration.ConfigurationManager.AppSettings[configKeyCanonicalHostName];

        if (string.IsNullOrEmpty(this.configCanonicalHostName))
        {
            System.Diagnostics.Trace.TraceWarning("Can't find application setting {0} in configuration file (/configuration/appSettings/add/...).", configKeyCanonicalHostName);
//#if !DEBUG
//            return;
//#endif
        }

        context.BeginRequest += new EventHandler(context_BeginRequest);
    }

    #endregion

    void context_BeginRequest(object sender, EventArgs e)
    {
        HttpApplication app = (HttpApplication)sender;
        if (app.Request.Url.Host != this.configCanonicalHostName) //&& !app.Request.IsLocal
        {
            UriBuilder newUrl = new UriBuilder(app.Request.Url);
            newUrl.Host = this.configCanonicalHostName;

            app.Response.Redirect(newUrl.ToString(), true);
        }
    }
}  

Then configure module in web.config:

 <?xml version="1.0"?>

<system.web>
  <!-- Configuration for classic pipeline mode -->
  <httpModules>
    <add name="CanonicalRedirectModule" type="CanonicalRedirectModule"/>
  </httpModules>
</system.web>

<system.webServer>
  <!-- Configuration for integrated pipeline mode -->
  <validation validateIntegratedModeConfiguration="false" />
  <modules runAllManagedModulesForAllRequests="true" >
    <add name="CanonicalRedirectModule" type="CanonicalRedirectModule"/>
  </modules>
</system.webServer>