kalta/nksip — pull request #14 by danielwhite (2013-11-06 13:02:52+00:00)
Title: Add callback for SipApps to indicate support for SIP extensions

This callback is utilise when the `Require' header is included in a
request. By default, only extensions supported by NkSIP itself are
marked as supported. Otherwise, a SipApp can indicate support by
returning a list of extensions.

Integration with the `make_supported' option is perhaps limited at
this stage.

See RFC 3261, 8.1.1.9 for more information.