Correct sockapi behavior when user authorize returns None
Correct sockapi behavior when user authorize returns None

If a user can connect, but gets removed mid session, traces were
being generated.  Correct by recognizing the circumstance and returning
the appropriate error to the client.

jjohnson42/confluent,jjohnson42/confluent,whowutwut/confluent,jjohnson42/confluent,xcat2/confluent,whowutwut/confluent,jjohnson42/confluent,xcat2/confluent,whowutwut/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,xcat2/confluent,whowutwut/confluent