How to redirect with “www” URL's to without “www” URL's or vice-versa?

Question

I am using ASP.NET 2.0 C#. I want to redirect all request for my web app with \"www\" to without \"www\"

www.example.com to example.com

Or

example.co

Answer 1

In order to answer this question, we must first recall the definition of WWW:

World Wide Web: n. Abbr. WWW

• The complete set of documents residing on all Internet servers that use the HTTP protocol, accessible to users via a simple point-and-click system.
• n : a collection of internet sites that offer text and graphics and sound and animation resources through the hypertext transfer protocol. By default, all popular Web browsers assume the HTTP protocol. In doing so, the software prepends the 'http://' onto the requested URL and automatically connect to the HTTP server on port 80. Why then do many servers require their websites to communicate through the www subdomain? Mail servers do not require you to send emails to recipient@mail.domain.com. Likewise, web servers should allow access to their pages though the main domain unless a particular subdomain is required.

Succinctly, use of the www subdomain is redundant and time consuming to communicate. The internet, media, and society are all better off without it.

Using the links at the top of the page, you may view recently validated domains as well as submit domains for real-time validation.

Apache Webserver:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L] 

Windows Server/IIS: There is no way.

You can use Url Rewriter from Code Plex. With the same syntax.

RewriteCond %{HTTP_HOST} !^(www).*$ [NC]
RewriteRule ^(.*)$ http://www.%1$1 [R=301]

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