domotz-remote-pawn/src/commands/udpSendPackets.js

Domotz Agent

/** This file is part of Domotz Agent.
  * Copyright (C) 2016  Domotz Ltd
  *
  * Domotz Agent is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * Domotz Agent is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Domotz Agent.  If not, see <http://www.gnu.org/licenses/>.
  **/
/**
 * Created by Iacopo Papalini <ipapalini@domotz.com> on 08/04/15.
 *
 */

/**
 *
 */
var udpSendPacket = function (message, resourceLocator) {

    var scheduler  = resourceLocator.utils.scheduler;
    var udp        = resourceLocator.udp.utils;

    var payload = message.payload;

    var port    = payload.port;
    var host    = payload.host;
    var filters = payload.datagram_filters;

    function deferredMessage(socket, buffer, host, port) {
        return function () {
            var len = buffer.length;
            for (var i = 0; i < payload.burst; i++) {

                socket.send(buffer, 0, len, port, host);
            }
            console.silly(len + ' bytes sent ' + i + ' times');
        };
    }

    return {
        execute: function (callback) {
            var socket = udp.createSocket();
            var interval = payload.interval || 200;

            var schedule = [];

            for (var i = 0; i < filters.length; i++) {
                var buffer = udp.decode(filters[i]);
                var action = deferredMessage(socket, buffer, host, port);
                schedule.push([action, interval, "Send packet #" + i]);
            }

            schedule.push([function () {
                socket.close();
            }, 0, 'Closing socket']);

            schedule.push([callback, 0, 'Calling callback']);

            scheduler.execute(schedule);
        },
        describe: function () {
            return message.correlationId + " - udpSendPackets - " + host +
                ':' + port + ' - ' + filters.length + ' packets';
        }
    };
};

module.exports.command = udpSendPacket;