Chris Ayoup authored Apr 16, 2020 and GStreamer Marge Bot committed May 11, 2020

Add some properties to allow TCP and UDP candidates to be toggled.  This
is useful in cases where someone is using this element in an environment
where it is known in advance whether a given transport will work or not
and will prevent wasting time generating and checking candidate pairs
that will not succeed.

Part-of: <!1223>