d33d180b_ide_to_HTTP_Part_II___Messages__Description
[Code] 301 [Reason] Moved Permanently [Description] 
The resource has moved to the URL specified in the Location header and the client never needs to check this URL again. We saw an example of this earlier in the article when we used telnet and the server redirected us from www.odetocode.com to odetocode.com to give search engines a canonical URL.
A Software Developer's Guide to HTTP Part II - Messages
Description