<dl>
<dt>Description:</dt>
- <dd>...</dd>
+ <dd>The goal of this rule is to force the use of a particular
+ hostname, in preference to other hostnames which may be used to
+ reach the same site. For example, if you wish to force the use
+ of <strong>www.example.com</strong> instead of
+ <strong>example.com</strong>, you might use a variant of the
+ following recipe.</dd>
+
<dt>Solution:</dt>
<dd>
<example><pre>
-RewriteCond %{HTTP_HOST} !^fully\.qualified\.domain\.name [NC]
-RewriteCond %{HTTP_HOST} !^$
-RewriteCond %{SERVER_PORT} !^80$
-RewriteRule ^/(.*) http://fully.qualified.domain.name:%{SERVER_PORT}/$1 [L,R]
-RewriteCond %{HTTP_HOST} !^fully\.qualified\.domain\.name [NC]
+# To force the use of
+RewriteEngine On
+RewriteCond %{HTTP_HOST} !^www\.example\.com [NC]
RewriteCond %{HTTP_HOST} !^$
-RewriteRule ^/(.*) http://fully.qualified.domain.name/$1 [L,R]
+RewriteRule ^/(.*) http://www.example.com/$1 [L,R]
</pre></example>
</dd>
</dl>