mod_http_oauth2: Strip unknown extra fields from client registration We shouldn't sign things we don't understand! RFC 7591 section-2 states: > The authorization server MUST ignore any client metadata sent by the > client that it does not understand (for instance, by silently removing > unknown metadata from the client's registration record during > processing). Prevents grandfathering in of unvalidated data that might become used later, especially since the 'additionalProperties' schema keyword was removed in 698fef74ce53

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labels:
summary: Send restricted XML for conformance testing
...

Introduction
============

This module sends processing instructions, comments, DTDs and a non
predefined entity (defined by the DTD) to the requesting entity.

Usage
=====

Send "PI", "comment", "DTD" or "entity" to
<xmpp:example.com/conformance>, while directly connected to the Prosody
instance.