     # Get or create session with given uuid.
     # Can be safely called several times at once without creating multiple sessions...
     get_session: (mesg, cb) =>
-        # TODO: must be robust against multiple clients opening same session_id at once, which
+        # NOTE: must be robust against multiple clients opening same session_id at once, which
         # would be likely to happen on network reconnect.
         winston.debug("get_session: console session #{mesg.session_uuid}")
         session = @_sessions[mesg.session_uuid]

                            winston.debug("restarted console server, then got port = #{port}")
                            cb()
            (cb) =>
                # Got port -- now create the new session
                @_new_session mesg, port, (err, _session) =>
                    if err
                        cb(err)

            # Request a Console session from console_server
            misc_node.enable_mesg(console_socket)
            console_socket.write_mesg('json', mesg)

            # Below we wait for one message to come back from the console_socket.
            # However, if 5s elapses with no response -- which could happen! --
            # we give up, and return an error.  We then set cb undefined in case
            # the session does actually work.
            no_response = =>
                if cb?
                    cb("no response")
                    console_socket.destroy()
                    cb = undefined  # make sure doesn't get used below
            no_response_timeout = setTimeout(no_response, 5000)

            # Read one JSON message back, which describes the session
            console_socket.once 'mesg', (type, desc) =>
                clearTimeout(no_response_timeout)
                if not cb?  # already failed
                    return
                if not history?
                    history = new Buffer(0)
                # in future, history could be read from a file
