o Wait for the UnbindFuture to be completed
o Called the close() methods, which actually shutdown the connection, as requested by RFC 4511 : "
5.3. Termination of the LDAP session

   Termination of the LDAP session is typically initiated by the client sending an UnbindRequest ... each protocol peer gracefully terminates the LDAP session by ceasing exchanges at the LDAP message layer, tearing down any SASL layer, tearing down any TLS layer, and closing the transport connection."

git-svn-id: https://svn.apache.org/repos/asf/directory/shared/trunk@1636512 13f79535-47bb-0310-9956-ffa450edef68