def handle_stream(self, stream, address):
"""
When a new incoming connection is found, this function is called. Wrap
the incoming connection in a Participant, then make it the most recent
connection. Tell the oldest connection to use the new one as its
write target.
"""
r = Participant(stream, self.db)
if self.last_connection is not None:
self.last_connection.add_destination(r)
self.last_connection = r
r.wait_for_headers()
