mod_http_oauth2: Do minimal validation of private-use URI schemes Per draft-ietf-oauth-v2-1-08#section-2.3.1 > At a minimum, any private-use URI scheme that doesn't contain a period > character (.) SHOULD be rejected. Since this would rule out the OOB URI, which is useful for CLI tools and such without a built-in http server, it is explicitly allowed.

This module helps make BOSH and WebSocket connection endpoints
discoverable via the HTTP method described in
[XEP-0156](https://xmpp.org/extensions/xep-0156.html#http).