implementing rewrite for http://site/NICK => http://site/profile.aspx?nick=NICK

Question

User1882076431 posted

hey guys, like the title says, how can i accomplish this sort of a rewrite as simple as possible? is it with httphandlers or perhaps the asp.net routing? i am using version 3.5.

the problem is that i want any other requests to be ignored, like requests to .aspx files, images, folders and such.

your suggestions are appreciated :)

Answer 1

User-1739576956 posted

 You could use HttpHandlers - write a handler smth like:

namespace Handlers
{
    using System;
    using System.Web;
    using System.Text.RegularExpressions;

    public class MyHandler : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            String site = Regex.Match(context.Request.Path, "/(?<site>[^/]*?)/$", RegexOptions.IgnoreCase).Groups["site"].Value;
            context.Response.Redirect(context.Server.MapPath("~/") + "profile.aspx?nick=" + site);
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }

    }
}

 

Answer 2

User1882076431 posted

Thanks Maate, i will see if this will help, but then will this have to process all requests, in web.config i would put:

<add verb="*" path="*" type="MyHandler"/>

If so, how do we make it so it ignores everything else but the requests to /NICK ?

Thanks for your help :)

Answer 3

User-1739576956 posted

I think there's actually different options.

First, you could require user to postfix request with "/", e.g. http://yoursite.com/NICK/. This could be done registerings the handler like 

<

add verb="*" path="*/" type="Handlers.MyHandler,Handlers" />

With this, requests to "/NICK" would be ignored by handler.

Another option would be to follow your own suggestion, i.e. setting path="*". Then you would have to parse the url in the handler - e.g. smth like if(Regex.Match(context.Request.Path, @".*\.*").Success) throw new SomeRelevantException(); If you follow this approach you need to rewrite my original regex a bit - out of memory: "/(?<site>[^/]*)/?$".

Br. Morten

Answer 4

User1882076431 posted

thanks, i dont think i can require postfix of "/" so it only gives me second option.

i am having really hard time figuring out once i determine that the URL is not a NICK how to let the httphandler process any other requests "as is". i'm very new into this http rewriting world of asp.net :) any suggestions?

Answer 5

User1882076431 posted

i dont know if i expressed myself clear so i will give examples:

i want these to get handled:

http://site.com/john => http://site.com/profile.aspx?nick=john
http://site.com/mark => http://site.com/profile.aspx?nick=mark
http://site.com/fred => http://site.com/profile.aspx?nick=fred

i DONT want these to get handled:

http://site.com/page.aspx
http://site.com/images/logo.jpg
etc...

thanks

Answer 6

User-1739576956 posted

 I think this will do the job:

namespace Handlers
{
    using System;
    using System.Web;
    using System.Text.RegularExpressions;
    using System.Web.UI;

    public class MyHandler : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            String virtualPath = context.Request.Path;
            
            //if the virtual path contains ".aspx", then redirect to the real page using
            //without using this custom http handler
            if (context.Request.Path.Contains(".aspx"))
            {
                IHttpHandler handler = PageParser.GetCompiledPageInstance(context.Request.Path, context.Request.PhysicalPath, context);
                context.Server.Transfer(handler, true);
            }
            
            //parse the site name from the virtual path, e.g. /WebSite/Test or /WebSite/Test/
            String site = Regex.Match(virtualPath, "/(?<site>[^/]*?)/?$", RegexOptions.IgnoreCase).Groups["site"].Value;

            
            context.Response.Redirect("~/profile.aspx?nick=" + site);
            
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }

    }
}

The web.config is still just

<add verb="*" path="*" type="Handlers.MyHandler,Handlers" />