Google Appengine currently does not allow configuration of naked domains. Meaning, if you’re building something on Appengine you’ll have to settle for a URL like http://www.mysite.com or http://whatever.mysite.com and you will not be able to use http://mysite.com.
Its not so bad in most cases, but not having http://mysite.com isn’t going to stop people from trying to go there. So its important to set up some sort of device to forward the naked domain to the www.
Unfortunately you’re going to need a server and for this example it will need to be running Apache2. The redirect is handled by placing the following line in an apache config file (/apache2/httpd.conf).
Redirect permanent / http://www.mysite.com/
Where http://www.mysite.com is the example site being hosted on Appengine.
Or, if your apache server is hosting other apps and domains you’ll need to set up the redirect in a VirtualHost as shown here.
<VirtualHost *:80> ServerName mysite.com Redirect permanent / http://www.mysite.com/ </VirtualHost>
Note that the ‘permanent’ parameter in the Redirect command enforces a 301 or permanent redirect. You can choose other forms of redirect by replacing the ‘permanent’ with either the redirect number (ie 302) or the keywords from the following table I’ve shamelessly copied from here.
|301||permanent||The resource has permanently moved|
|302||temp||The resource has temporarily moved|
|303||seeother||The resource has been replaced and refer to new resource|
|305||UseProxy||Use proxy to access site|
|307||Temp||The resource has temporarily moved|
|410||Tegone||The resource has permanently removed|
If you’re not using apache or are looking for more ideas here’s a list of other techniques.