| The Retry-After header field identifies the time to retry the request after
recipt of the response. It can be used with a 500 (Server Internal Error) or 503
(Service Unavailable) response to indicate how long the service is
expected to be unavailable to the requesting client and with a 404
(Not Found), 413 (Request Entity Too Large), 480 (Temporarily Unavailable),
486 (Busy Here), 600 (Busy), or 603 (Decline) response to indicate when the
called party anticipates being available again. The value of this field is
a positive integer number of seconds (in decimal) after the time of the
response.
An optional comment can be used to indicate additional information about the
time of callback. An optional "duration" parameter indicates how long the
called party will be reachable starting at the initial time of availability.
If no duration parameter is given, the service is assumed to be available
indefinitely.
For Examples:
Retry-After: 18000;duration=3600
Retry-After: 120 (I'm in a meeting)
See Also: Parameters See Also: Header author: BEA Systems, NIST version: 1.2 |