Redirect for missing 'www' in URL

[Chris]

Hi, is there anyway I can redirect a user who has forgotten to enter
the www part at the beginning of a URL?

i.e I want to direct a user to the same content whether they enter
mysite.com or www.mysite.com

I'm using name-based virtual hosting and any help would be
appreciated.

Regards
Chris

[HansH]

"Chris" <wee...@gmail.com> schreef in bericht
news:4d39f7c0.0502...@posting.google.com...

> Hi, is there anyway I can redirect a user who has forgotten to enter
> the www part at the beginning of a URL?
>
> i.e I want to direct a user to the same content whether they enter
> mysite.com or www.mysite.com

First things first, both names has to resolve over DNS to the same IP.

> I'm using name-based virtual hosting and any help would be
> appreciated.

I'm using a rewrite in the _default_ virtual host:
RewriteEngine on
RewriteCond %{HTTP_HOST} !^(www)\.
RewriteCond %{HTTP_HOST} ^([^\.]+\.)?([^\.]+\.[^\.]+)$
RewriteRule (.*) http://www.%2$1?d=1 [R=301,QSA,L]

The 'd=1' is only a reference logged with the redirected request by the
proper vhost.
( 'Using another Rewrite at the same vhost to take care of spelling errors
... like www.misite.com or www.myside.com and adds 'd=2' as marker )

For the default vhost you may want to append the host name to the log
LogFormat "%h %l %u ....... \"%{host}i\"" combined-host

HansH