domotz-remote-pawn/src/modules/dhcpjs/server.js

Domotz Agent

// Copyright (c) 2011 Andrew Paprocki

var EventEmitter = require('events').EventEmitter;
var util = require('util');
var dgram = require('dgram');
var parser = require('./parser');

function Server(options, socket_opts) {
    if (options) {
        if (typeof options !== 'object') {
            throw new TypeError('Server options must be an object');
        }
    } else {
        options = {};
    }
    var self = this;
    EventEmitter.call(this, options);
    var socketOpts = socket_opts ? socket_opts : 'udp4';
    this.server = dgram.createSocket(socketOpts);
    this.server.on('message', function (msg, rinfo) {
        try {
            var data = parser.parse(msg, rinfo);
            self.emit('message', data);
        } catch (e) {
            if (!self.emit('error', e)) {
                throw e;
            }
        }
    });
    this.server.on('listening', function () {
        var address = self.server.address();
        self.emit('listening', address.address + ':' + address.port);
    });
    this.server.on('error', function (err) {
        console.error(err.stack);
    });
}
util.inherits(Server, EventEmitter);
module.exports = Server;

Server.prototype.bind = function (host, port) {
    var _this = this;
    if (!port) {
        port = 67;
    }
    this.server.bind(port, host, function () {
        _this.server.setBroadcast(true);
    });
};