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broker.js
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broker.js
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/**
*
* The MIT License (MIT)
*
* http://block0.org
*
* Copyright (c) 2016-present Jollen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
'use strict';
/*
* Module dependencies.
*/
var http = require("http")
, WebSocketServer = require('websocket').server
, EventEmitter = require('events').EventEmitter
, util = require('util');
/**
* Expose `WebsocketBroker` constructor.
*/
if (typeof(module) != "undefined" && typeof(exports) != "undefined") {
exports = module.exports = WebsocketBroker;
}
/**
* Initialize a new `WebsocketBroker` with the given `options`.
*
* @param {Object} options
* @api private
*/
function WebsocketBroker(options) {
// Superclass Constructor
EventEmitter.call(this);
options = options || {};
this.clientsPath = [];
this.host = options.host || 'localhost';
this.port = options.port || 8000;
this.endpoint = options.endpoint || 'wot.city';
}
util.inherits(WebsocketBroker, EventEmitter);
/**
* Initialize a new `WebsocketBroker` with the given `options`.
*
* @param {Object} request
* @param {Object} response
* @api private
*/
WebsocketBroker.prototype.onRequest = function(request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.end();
};
/**
* Start websocket server.
*
* @param {Object} route
* @return {}
* @api public
*/
WebsocketBroker.prototype.start = function(route, handlers) {
var self = this;
// arguments to child processes
var port = self.port || process.env['PORT'];
var host = self.host || process.env['HOST'];
var endpoint = self.endpoint || process.env['ENDPOINT'];
var server = http.createServer(this.onRequest).listen(port, host, function() {
console.info('node is running at ws://' + self.host + ':' + self.port);
});
var wsServer = new WebSocketServer({
httpServer: server,
autoAcceptConnections: false
});
/**
* handlers
*/
var onWsRequest = function(request) {
var connection = request.accept('', request.origin);
route(request.resource, connection, handlers, self.clientsPath);
connection.on('message', onWsConnMessage);
connection.on('close', onWsConnClose);
};
var onWsConnMessage = function(message) {
// Dispatching request message
self.emit('data', {
data: message.utf8Data,
pathname: this.pathname
});
};
var onWsConnect = function(webSocketConnection) {
};
var onWsConnClose = function(reasonCode, description) {
};
wsServer.on('request', onWsRequest);
wsServer.on('connect', onWsConnect);
};