With some very minor re-wording the “429 Too Many Requests” response could just as easily apply when the user has been limited to a specific number of outstanding requests. Essentially the server tells the user that it will queue at most N requests from the User and that the N+1st will be rejected. The error response is essentially the same, however. The text just needs to be more flexible in explaining what “too many” is relative to. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20111020/8651d39c/attachment.html>