The HTTP response status code 301 Moved Permanently is used for permanent redirection.
This status code should be used with the location header. RFC 2616 states that:
- If a client has link-editing capabilities, it should update all references to the Request URI.
- The response is cachable.
- Unless if the request method was HEAD, the entity should contain a small hypertext note with a hyperlink to the new URI(s).
- If the 301 status code is received in response to a request of any type other than GET or HEAD, the client should ask the user before redirecting.
Example
GET /index.php http/1.1
Host: www.example.com
301 Moved Permanently
Location: /login.php
See also
