fruux/sabre-http — pull request #34 by Hywan (2014-11-10 07:27:31+00:00)
Title: 306 is now unused

Regarding http://tools.ietf.org/html/rfc7231#section-6.4.6:

> The 306 status code was defined in a previous version of this
> specification, is no longer used, and the code is reserved.