def readable(self, selector):
sock, addr = self.sock.accept()
conn = Connection(lambda properties: Session(link, properties))
conn.tracing(*self.traces)
if self.auth:
sasl = SASL(conn)
sasl.tracing(*self.traces)
sasl.server(self.mechanisms, passwords=self.passwords)
sel = sasl
else:
sel = conn
selector.register(ConnectionSelectable(sock, sel, self.tick, self.period, self.timeout))
