Question

When I try to rewrite a URL in ASP.NET I’m finding that the URL changes on the user’s browser. I’m using WCF REST services and I want to change the way that you access URLs. See the code example below.

I have an HttpModule that is intercepting requests.

public class FormatModule : IHttpModule
{
    #region IHttpModule Members

    public void Dispose()
    {
        throw new NotImplementedException();
    }

    public void Init(HttpApplication application)
    {
        application.BeginRequest += new EventHandler(application_BeginRequest);
    }

    void application_BeginRequest(object sender, EventArgs e)
    {
        HttpContext context = HttpContext.Current;
        if (context.Request.RawUrl.Contains(".pox")) 
            context.RewritePath("~/Lab1Service.svc?format=pox", false);
        else if (context.Request.RawUrl.Contains(".json")) 
            context.RewritePath("~/Lab1Service.svc?format=json", false);
    }

    #endregion
}

The problem occurs when the users visits the URL in their browser.

http://localhost/Lab1Service.svc.pox, instead the URL changes in the browser to http://localhost/Lab1Service.svc?format=pox.

Answer 1

I resolved this. It appears that if you don’t include the trailing backslash after the .svc extension the URL REDIRECTS instead of REWRITING.

This was my original

context.RewritePath("~/Lab1Service.svc?format=pox", false);

This is the corrected version (notice the forward slash after the .svc)

context.RewritePath("~/Lab1Service.svc/?format=pox", false);