- From: Karl Dubost <karld@opera.com>
- Date: Thu, 10 Feb 2011 15:02:48 -0500
- To: Mark Nottingham <mnot@mnot.net>
- Cc: HTTP Working Group <ietf-http-wg@w3.org>, Bryce Nesbitt <bnesbitt@bepress.com>
Le 10 févr. 2011 à 01:06, Mark Nottingham a écrit :
> Back to the original question here; should 503's definition be modified to explicitly allow rate limiting?
>
> Proposal -- add one paragraph:
Putting the message in context
http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-12#section-8.5.4
CURRENT TEXT
8.5.4. 503 Service Unavailable
The server is currently unable to handle the request due
to a temporary overloading or maintenance of the server.
The implication is that this is a temporary condition
which will be alleviated after some delay. If known, the
length of the delay MAY be indicated in a Retry-After
header field. If no Retry-After is given, the client
SHOULD handle the response as it would for a 500
response.
| The meaning of "overloaded" is defined by and specific to
| the server, and can be selective (e.g., too many requests
| from a particular user).
Note: The existence of the 503 status code does not
imply that a server must use it when becoming
overloaded. Some servers might wish to simply refuse
the connection.
I would propose (but maybe too detailed for the group?).
PROPOSAL for the additional text
The meaning of "overloaded" is defined by and specific to
the server, and can be selective depending on the request
URI and its associated headers. For example, it doesn't
necessary mean a server malfunction but can be a notification
to inform the client that the server is used in excess for a
specific service (e.g., too many requests from a particular
user for an API).
For date, I guess it is ok. As the server should be able to create a date.
http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-08#section-9.3
2. If the response status code conveys a server error, e.g.
500 (Internal Server Error) or 503 (Service Unavailable),
and it is inconvenient or impossible to generate a valid
Date.
--
Karl Dubost - http://dev.opera.com/
Developer Relations & Tools, Opera Software
Received on Thursday, 10 February 2011 20:03:32 UTC