Service Unavailable Error 503 |
|
Response status codes beginning with the digit "5" indicate cases in which the
server is aware that it has erred or is incapable of performing the request.
Except when responding to a HEAD request, the server SHOULD include an entity
containing an explanation of the error situation, and whether it is a
temporary or permanent condition. User agents SHOULD display any included
entity to the user. These response codes are applicable to any request method.
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. If no Retry-After
is given, the client SHOULD handle the response as it would for a 500 response.
Note: The existence of the 503 status code does not imply that a server
must use it when becoming overloaded. Some servers may wish to simply refuse
the connection.
|