diff options
| -rw-r--r-- | index.html | 162 | ||||
| -rw-r--r-- | js/codeq.js | 3 | ||||
| -rw-r--r-- | js/codeq/comms.js | 271 | ||||
| -rw-r--r-- | js/codeq/login.js | 2 | ||||
| -rw-r--r-- | js/codeq/startup.js | 97 | ||||
| -rw-r--r-- | js/engine.io.js | 4040 | ||||
| -rw-r--r-- | js/prolog.js | 6 | ||||
| -rw-r--r-- | prolog.html | 1 |
8 files changed, 4546 insertions, 36 deletions
@@ -1,38 +1,140 @@ <html> <head> - <title>CodeQ Login</title> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> + <meta name="viewport" content="width=device-width, target-densitydpi=device-dpi"> + <meta name="apple-mobile-web-app-capable" content="yes"> + <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent"> + <meta name="format-detection" content="telephone=no"> + <link rel="stylesheet" href="css/jquery/jquery.terminal.css" type="text/css"> + <!-- CodeMirror --> + <link rel="stylesheet" href="css/codemirror/codemirror.css" type="text/css"> + <link rel="stylesheet" href="css/codemirror/show-hint.css" type="text/css"> + <!-- Bootstrap --> + <link href="css/bootstrap.min.css" rel="stylesheet"> + <link href="css/bootstrap-theme.min.css" rel="stylesheet"> + <!-- App --> + <link rel="stylesheet" href="css/codeq.css" type="text/css"> + <link rel="stylesheet" href="css/codeq/console.css" type="text/css"> + <title>CodeQ</title> </head> <body style="text-align: center;"> - <h1>CodeQ Login</h1> - <hr> - <table style="margin: 0 auto;"> - <tbody> - <tr> - <td style="text-align: right;">Username:</td> - <td><input type="text" name="username" id="username"></td> - </tr> - <tr> - <td style="text-align: right;">Password:</td> - <td><input type="password" name="password" id="password"></td> - </tr> - <tr> - <td style="text-align: right;">Problem:</td> - <td> - <select name="problem_group" id="problem_group" style="min-width: 10em;"> - </select> - <select name="problem" id="problems" style="min-width: 10em;"> - </select> - </td> - </tr> - <tr> - <td colspan="2" style="text-align: center;"> - <button type="button" id="submit">Login</button> - </td> - </tr> - </tbody> - </table> + <div class="navbar navbar-inverse navbar-fixed-top" id="topbar"> + <div class="container-fluid"> + <div class="navbar-header"> + <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> + <span class="icon-bar"></span> + <span class="icon-bar"></span> + <span class="icon-bar"></span> + </button> + <a class="navbar-brand" href="#" title="Intelligent tutor system">CodeQ</a> + <a class="navbar-brand" id="title"></a> + </div> + <div class="collapse navbar-collapse"> + <ul class="nav navbar-nav navbar-right"> + <p class="navbar-text">Signed in as Franc Jožef</p> + <li class="dropdown"> + <a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="true"> + <span class="glyphicon glyphicon glyphicon-user"></span> + </a> + <ul class="dropdown-menu"> + <li><a href="#">Profile</a></li> + <li><a href="#">Login or Signup</a></li> + <li><a href="#">Logout</a></li> + </ul> + </li> + <li><a href="#"><span class="glyphicon glyphicon glyphicon-wrench" aria-hidden="true"></span></a></li> + </ul> + </div><!--/.nav-collapse --> + + </div> + </div> + + <div id="screen_login"> + <h1>CodeQ Login</h1> + <hr> + <table style="margin: 0 auto;"> + <tbody> + <tr> + <td style="text-align: right;">Username:</td> + <td><input type="text" name="username" id="username"></td> + </tr> + <tr> + <td style="text-align: right;">Password:</td> + <td><input type="password" name="password" id="password"></td> + </tr> + <tr> + <td style="text-align: right;">Problem:</td> + <td> + <select name="problem_group" id="problem_group" style="min-width: 10em;"> + </select> + <select name="problem" id="problems" style="min-width: 10em;"> + </select> + </td> + </tr> + <tr> + <td colspan="2" style="text-align: center;"> + <button type="button" id="submit">Login</button> + </td> + </tr> + </tbody> + </table> + </div> + + <div class="container-fluid" id="screen_prolog" style="display: none;"> + <div class="row"> + <div class="col-lg-3 col-md-6 col-sm-12 block"> + <div id="description"></div> + <div class="block-label">Instructions</div> + </div> + <div class="col-lg-3 col-md-6 col-sm-12 block"> + <nav class="navbar navbar-default" id="block-toolbar"> + <div class="container-fluid"> + <button type="button" class="btn btn-default navbar-btn" id="btn_code_run">Run</button> + <button type="button" class="btn btn-default navbar-btn" id="btn_code_break">Break</button> + <button type="button" class="btn btn-default navbar-btn" id="btn_code_hint">Hint</button> + <button type="button" class="btn btn-default navbar-btn" id="btn_code_test">Test</button> + </div> + </nav> + <div id="code_editor"></div> + <div class="block-label">Code</div> + </div> + <div class="col-lg-3 col-md-6 col-sm-12 block"> + <div id="console"></div> + <div class="block-label">Console</div> + </div> + <div class="col-lg-3 col-md-6 col-sm-12 block"> + <div id="info"></div> + <div class="block-label">Hints</div> + </div> + </div><!--/row--> + </div><!--container--> + + <div id="disabled" style="position: fixed; left: 0; right: 0; top: 0; bottom: 0; cursor: wait; background-color: rgba(0, 0, 0, 0.7);"></div> + + <!-- jQuery stuff --> <script src="js/jquery/jquery-1.11.3.js"></script> - <script src="js/codeq/login.js"></script> + <script src="js/engine.io.js"></script> + <script src="js/jquery/jquery.terminal-0.8.8.js"></script> + <!--script src="js/jquery/jquery.console.js"></script> + <!-- Q promise library --> + <script src="js/q.js"></script> + <!-- Bootstrap --> + <script src="js/bootstrap/bootstrap.min.js"></script> + <!-- Cordova/PhoneGap --> + <script type="text/javascript" src="cordova.js"></script> + <!-- CodeMirror stuff --> + <script src="js/codemirror/codemirror.js"></script> + <script src="js/codemirror/matchbrackets.js"></script> + <script src="js/codemirror/prolog.js"></script> + <script src="js/codemirror/show-hint.js"></script> + <!-- codeq app --> + <script src="js/codeq.js"></script> + <script src="js/codeq/comms.js"></script> + <script src="js/codeq/console.js"></script> + <script src="js/def_parser.js"></script> + <script src="js/prolog.js"></script> + <script src="js/python.js"></script> + <script src="js/codeq/startup.js"></script> </body> </html> diff --git a/js/codeq.js b/js/codeq.js index ed59e4e..f54b46e 100644 --- a/js/codeq.js +++ b/js/codeq.js @@ -726,7 +726,8 @@ window.phandler = null; // TODO: this is for debug only codeq.urlPrefix = '/svc/'; - $(document).ready(function () { +// $(document).ready + var deprecated = (function () { // var s = location.hash; // if (s.length == 0) return; // empty hash // if (s.charAt(0) == '#') s = s.substring(1); diff --git a/js/codeq/comms.js b/js/codeq/comms.js index 25c1f8c..f32b4db 100644 --- a/js/codeq/comms.js +++ b/js/codeq/comms.js @@ -1,4 +1,4 @@ -(function () { +/*(function () { var send = function (service, json) { if (json instanceof Object) json = codeq.jsonize(json); @@ -150,4 +150,273 @@ }); } }; +})();*/ + +(function () { + var BinaryMessageError = function (message) { + var e = new Error(message); + this.message = message; + if (e.stack) this.stack = e.stack; + }; + BinaryMessageError.prototype = new Error(); + BinaryMessageError.prototype.name = 'BinaryMessageError'; + + var MessageParseError = function (message) { + var e; + if (message instanceof Error) { + e = message; + this.message = 'Message parse error: ' + e.toString(); + } + else { + e = new Error(message); + this.message = message; + } + if (e.stack) this.stack = e.stack; + }; + MessageParseError.prototype = new Error(); + MessageParseError.prototype.name = 'MessageParseError'; + + var currentTID = 0, // transaction ID of the next message + sid = null, // session ID, changes after each successful initial login + socket = null, + reconnectTimer = null, + login_username = null, + login_password = null, + + waiters = {}, // keyed by TID: {packet, created, promise} + connected = false, + connectPromise = null, + handleIncomingMessageError = function (error, data) { + if (error instanceof BinaryMessageError) { + codeq.log.error('Incoming message is not a string, attempting reconnect'); + connected = false; + socket.close(); // connection will be reestablished in the close event handler + } + else if (error instanceof MessageParseError) { + codeq.log.error('Incoming message is not a JSON message, ignoring: ' + data); + } + else { + codeq.log.error('Unknown error, attempting reconnect: ' + error); + connected = false; + socket.close(); // connection will be reestablished in the close event handler + } + }, + parseData = function (data) { + if (typeof data !== 'string') { + throw new BinaryMessageError('Message is not a string'); + } + + try { + return JSON.parse(data); + } + catch (e) { + codeq.log.error('Incoming message is not a JSON message, ignoring: ' + data); + throw new MessageParseError(e); + } + }, + onMessage = function (data) { + var m, waiter; + + try { + m = parseData(data); + } + catch (e) { + handleIncomingMessageError(e, data); + return; + } + + if ('tid' in m) { + waiter = waiters[m.tid]; + if (waiter) { + delete waiters[m.tid]; + waiter.promise.resolve(m); + codeq.log.debug('Delivered an incoming message, TID=' + m.tid); + return; + } + else { + codeq.log.debug('There is noone waiting for the incoming message, TID=' + m.tid); + } + } + else { + codeq.log.debug('Incoming message without a TID, handing it off to handlers'); + } + + // TODO handle message delivery + }, + onConnect = function () { + var tid, sortedWaiters = [], i; + connected = true; + if (connectPromise) { + // manual connect + connectPromise.resolve(); + connectPromise = null; + } + else { + // auto re-connect + } + // resend anything not already sent + for (tid in waiters) { + if (waiters.hasOwnProperty(tid)) { + sortedWaiters.push(waiters[tid]); + } + } + // sort by ascending transaction ID before sending + sortedWaiters.sort(function (a, b) {return a.tid - b.tid;}); + for (i = 0; i < sortedWaiters.length; i++) { + (function (waiter) { + if (!waiter.sent) { + socket.send(JSON.stringify(waiter.packet), function () { + waiter.sent = true; + }); + } + })(sortedWaiters[i]); + } + }, + onClose = function () { + connected = false; + if (connectPromise) { + // resulted from manual connect, don't attempt reconnect + connectPromise.reject(new Error('Connection failed')); + connectPromise = null; + socket.off('open', onConnect); + socket.off('close', onClose); + socket.off('message', onMessage); + socket = null; + } + else { + // spurious disconnect, attempt reconnect + reconnectTimer = setTimeout(function () { + reconnectTimer = null; + socket.open(); + }, 250); // reconnect in quarter of a second + } + }; + + codeq.comms = { + 'connect': function () { + var deferred = Q.defer(); + + if (connectPromise) { + // connection already taking place + connectPromise.then(deferred.resolve, deferred.reject, deferred.notify); + } + else if (socket) { + // already connected + if (connected) { + deferred.resolve(); + } + else { + // auto re-connecting + connectPromise = deferred; + } + } + else { + // create a new connection + connectPromise = deferred; + socket = eio('ws://' + location.host, { + 'upgrade': true, + 'path': '/ws', + 'transports': ['polling', 'websocket'] + }); + socket.on('open', onConnect); + socket.on('close', onClose); + socket.on('message', onMessage); + } + + return deferred.promise; + }, + 'disconnect': function () { + if (socket) { + socket.off('open', onConnect); + socket.off('close', onClose); + socket.off('message', onMessage); + socket.close(); + socket = null; + } + if (reconnectTimer !== null) { + clearTimeout(reconnectTimer); + reconnectTimer = null; + } + connected = false; + if (connectPromise) { + connectPromise.reject(new Error('Forced disconnect')); + connectPromise = null; + } + login_password = null; // manual disconnect will prevent auto-login + sid = null; + }, + 'send': function (packet) { + return Q.Promise(function (resolve, reject, notify) { + var waiter = { + 'packet': packet, + 'created': Date.now(), + 'promise': {'resolve': resolve, 'reject': reject, 'notify': notify}, + 'sent': false + }; + packet.tid = currentTID; + if (sid !== null) packet.sid = sid; + waiters[currentTID] = waiter; + currentTID++; + if (connected) { + socket.send(JSON.stringify(packet), function () { waiter.sent = true; }); + } + }); + }, + 'login': function (username, password) { + var packet = {'action': 'login', 'username': username, 'password': password}, + myself = this, + performLogin = function () { + return myself.send(packet).then(function (response) { + if (response.code === 0) { + // login successful, remember the login credentials for auto-reconnects + login_username = username; + login_password = password; + sid = response.new_sid || response.sid; + } + return response; + }); + }; + if (socket) return performLogin(); + // this is the only method where we do connect() first, if we're not already connected + return this.connect().then(performLogin); + }, + + sendActivity: function commsSendActivity (trace, solution, problem_id) { + return this.send({'action': 'activity', 'trace': trace, 'solution': solution, 'problem_id': problem_id}); + }, + + sendQuery: function commsSendQuery (query, problem_id) { + query['action'] = 'query'; + return this.send(query); + }, + + sendPush: function commsSendPush (json) { + json['action'] = 'python_push'; + return this.send(json); + }, + + sendPull: function commsSendPull (json) { + json['action'] = 'python_pull'; + return this.send(json); + }, + + sendHint: function commsSendHint (json) { + json['action'] = 'hint'; + return this.send(json); + }, + + sendTest: function commsSendTest (json) { + json['action'] = 'test'; + return this.send(json); + }, + + getProblem: function commsGetProblem (language, problem_group, problem) { + return this.send({ + 'action': 'get_problem', + 'language': language, + 'problem_group': problem_group, + 'problem': problem + }); + } + }; })(); diff --git a/js/codeq/login.js b/js/codeq/login.js index e1daadf..ef67304 100644 --- a/js/codeq/login.js +++ b/js/codeq/login.js @@ -20,7 +20,7 @@ jqGroup = $('#problem_group'), jqProblems = $('#problems'), html = [], - mapping = {} + mapping = {}, onGroupChange = function () { var problems = mapping[jqGroup.val()], html = [], diff --git a/js/codeq/startup.js b/js/codeq/startup.js new file mode 100644 index 0000000..980d3d7 --- /dev/null +++ b/js/codeq/startup.js @@ -0,0 +1,97 @@ +$(document).ready(function () { + codeq.comms.connect().then(function () { + return codeq.comms.send({'action': 'list_problems'}); + }).then( + function success(data) { + var i, groups, group, problems, problem, first_group, + jqGroup = $('#problem_group'), + jqProblems = $('#problems'), + html = [], + mapping = {}, + onGroupChange = function () { + var problems = mapping[jqGroup.val()], + html = [], + i, p; + if (problems) { + for (i = 0; i < problems.length; i++) { + p = problems[i]; + html.push('<option value="', p.identifier, '">', p.name, '</option>\n') + } + } + jqProblems.html(html.join('')); + }; + + if (data && (data.code === 0)) { + $('#disabled').css('display', 'none'); + groups = data.problems; + for (i = 0; i < groups.length; i++) { + group = groups[i]; + var identifier = group.identifier.language + '/' + group.identifier.group; + var name = group.name.language + ': ' + group.name.group; + html.push('<option value="', identifier, '">', name, '</option>\n'); + mapping[identifier] = group.problems; + } + jqGroup.html(html.join('')); + first_group = html[1]; + html = null; + + jqGroup.on('click', onGroupChange); + jqGroup.val(first_group); + onGroupChange(); + + $("#submit").on('click', function () { + var identifier = $('#problem_group').val().split('/'), + problem = $('#problems').val(); + if (identifier.length < 2) alert('Choose a problem group'); + else if (!problem) alert('Choose a problem'); + else { + $('#disabled').css('display', ''); + codeq.comms.login($('#username').val(), $('#password').val()) + .then(function (data) { + $('#disabled').css('display', 'none'); + if (data.code !== 0) throw new Error('Login failed, code: ' + data.code + ', message: ' + data.message); + }) + .then(function () { + return codeq.comms.getProblem(identifier[0], identifier[1], problem); + }) + .then(function (data) { + if (data.code !== 0) throw new Error('Failed to obtain problem data, code: ' + data.code + ', message: ' + data.message); + $('#disabled').css('display', 'none'); + switch (identifier[0]) { + case 'prolog': + // TODO: assignment to window for debug only + $('#screen_login').css('display', 'none'); + $('#screen_prolog').css('display', ''); + window.phandler = codeq.createPrologHandler(data.data); + break; + case 'python': + // TODO: assignment to window for debug only + $('#screen_login').css('display', 'none'); + $('#screen_prolog').css('display', ''); + window.phandler = codeq.createPythonHandler(data.data); + break; + default: + alert('Unknown language: ' + identifier[0]); + break; + } + }) + .fail(function (reason) { + $('#disabled').css('display', 'none'); + alert('Login request failed: ' + reason); + }) + .done(); + } + }); + } + else { + $('#disabled').css('cursor', ''); + alert('Obtaining list of problems failed: code=' + data.code + ', reason=' + data.message); + } + }, + + function failure(reason) { + $('#disabled').css('cursor', ''); + alert('Request to obtain list of problems failed: ' + reason); + } + ).done(); +});
\ No newline at end of file diff --git a/js/engine.io.js b/js/engine.io.js new file mode 100644 index 0000000..f502946 --- /dev/null +++ b/js/engine.io.js @@ -0,0 +1,4040 @@ +!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.eio=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){ + +module.exports = _dereq_('./lib/'); + +},{"./lib/":2}],2:[function(_dereq_,module,exports){ + +module.exports = _dereq_('./socket'); + +/** + * Exports parser + * + * @api public + * + */ +module.exports.parser = _dereq_('engine.io-parser'); + +},{"./socket":3,"engine.io-parser":17}],3:[function(_dereq_,module,exports){ +(function (global){ +/** + * Module dependencies. + */ + +var transports = _dereq_('./transports'); +var Emitter = _dereq_('component-emitter'); +var debug = _dereq_('debug')('engine.io-client:socket'); +var index = _dereq_('indexof'); +var parser = _dereq_('engine.io-parser'); +var parseuri = _dereq_('parseuri'); +var parsejson = _dereq_('parsejson'); +var parseqs = _dereq_('parseqs'); + +/** + * Module exports. + */ + +module.exports = Socket; + +/** + * Noop function. + * + * @api private + */ + +function noop(){} + +/** + * Socket constructor. + * + * @param {String|Object} uri or options + * @param {Object} options + * @api public + */ + +function Socket(uri, opts){ + if (!(this instanceof Socket)) return new Socket(uri, opts); + + opts = opts || {}; + + if (uri && 'object' == typeof uri) { + opts = uri; + uri = null; + } + + if (uri) { + uri = parseuri(uri); + opts.host = uri.host; + opts.secure = uri.protocol == 'https' || uri.protocol == 'wss'; + opts.port = uri.port; + if (uri.query) opts.query = uri.query; + } + + this.secure = null != opts.secure ? opts.secure : + (global.location && 'https:' == location.protocol); + + if (opts.host) { + var pieces = opts.host.split(':'); + opts.hostname = pieces.shift(); + if (pieces.length) { + opts.port = pieces.pop(); + } else if (!opts.port) { + // if no port is specified manually, use the protocol default + opts.port = this.secure ? '443' : '80'; + } + } + + this.agent = opts.agent || false; + this.hostname = opts.hostname || + (global.location ? location.hostname : 'localhost'); + this.port = opts.port || (global.location && location.port ? + location.port : + (this.secure ? 443 : 80)); + this.query = opts.query || {}; + if ('string' == typeof this.query) this.query = parseqs.decode(this.query); + this.upgrade = false !== opts.upgrade; + this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/'; + this.forceJSONP = !!opts.forceJSONP; + this.jsonp = false !== opts.jsonp; + this.forceBase64 = !!opts.forceBase64; + this.enablesXDR = !!opts.enablesXDR; + this.timestampParam = opts.timestampParam || 't'; + this.timestampRequests = opts.timestampRequests; + this.transports = opts.transports || ['polling', 'websocket']; + this.readyState = ''; + this.writeBuffer = []; + this.callbackBuffer = []; + this.policyPort = opts.policyPort || 843; + this.rememberUpgrade = opts.rememberUpgrade || false; + this.binaryType = null; + this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades; + + // SSL options for Node.js client + this.pfx = opts.pfx || null; + this.key = opts.key || null; + this.passphrase = opts.passphrase || null; + this.cert = opts.cert || null; + this.ca = opts.ca || null; + this.ciphers = opts.ciphers || null; + this.rejectUnauthorized = opts.rejectUnauthorized || null; + + this.open(); +} + +Socket.priorWebsocketSuccess = false; + +/** + * Mix in `Emitter`. + */ + +Emitter(Socket.prototype); + +/** + * Protocol version. + * + * @api public + */ + +Socket.protocol = parser.protocol; // this is an int + +/** + * Expose deps for legacy compatibility + * and standalone browser access. + */ + +Socket.Socket = Socket; +Socket.Transport = _dereq_('./transport'); +Socket.transports = _dereq_('./transports'); +Socket.parser = _dereq_('engine.io-parser'); + +/** + * Creates transport of the given type. + * + * @param {String} transport name + * @return {Transport} + * @api private + */ + +Socket.prototype.createTransport = function (name) { + debug('creating transport "%s"', name); + var query = clone(this.query); + + // append engine.io protocol identifier + query.EIO = parser.protocol; + + // transport name + query.transport = name; + + // session id if we already have one + if (this.id) query.sid = this.id; + + var transport = new transports[name]({ + agent: this.agent, + hostname: this.hostname, + port: this.port, + secure: this.secure, + path: this.path, + query: query, + forceJSONP: this.forceJSONP, + jsonp: this.jsonp, + forceBase64: this.forceBase64, + enablesXDR: this.enablesXDR, + timestampRequests: this.timestampRequests, + timestampParam: this.timestampParam, + policyPort: this.policyPort, + socket: this, + pfx: this.pfx, + key: this.key, + passphrase: this.passphrase, + cert: this.cert, + ca: this.ca, + ciphers: this.ciphers, + rejectUnauthorized: this.rejectUnauthorized + }); + + return transport; +}; + +function clone (obj) { + var o = {}; + for (var i in obj) { + if (obj.hasOwnProperty(i)) { + o[i] = obj[i]; + } + } + return o; +} + +/** + * Initializes transport to use and starts probe. + * + * @api private + */ +Socket.prototype.open = function () { + var transport; + if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) { + transport = 'websocket'; + } else if (0 == this.transports.length) { + // Emit error on next tick so it can be listened to + var self = this; + setTimeout(function() { + self.emit('error', 'No transports available'); + }, 0); + return; + } else { + transport = this.transports[0]; + } + this.readyState = 'opening'; + + // Retry with the next transport if the transport is disabled (jsonp: false) + var transport; + try { + transport = this.createTransport(transport); + } catch (e) { + this.transports.shift(); + this.open(); + return; + } + + transport.open(); + this.setTransport(transport); +}; + +/** + * Sets the current transport. Disables the existing one (if any). + * + * @api private + */ + +Socket.prototype.setTransport = function(transport){ + debug('setting transport %s', transport.name); + var self = this; + + if (this.transport) { + debug('clearing existing transport %s', this.transport.name); + this.transport.removeAllListeners(); + } + + // set up transport + this.transport = transport; + + // set up transport listeners + transport + .on('drain', function(){ + self.onDrain(); + }) + .on('packet', function(packet){ + self.onPacket(packet); + }) + .on('error', function(e){ + self.onError(e); + }) + .on('close', function(){ + self.onClose('transport close'); + }); +}; + +/** + * Probes a transport. + * + * @param {String} transport name + * @api private + */ + +Socket.prototype.probe = function (name) { + debug('probing transport "%s"', name); + var transport = this.createTransport(name, { probe: 1 }) + , failed = false + , self = this; + + Socket.priorWebsocketSuccess = false; + + function onTransportOpen(){ + if (self.onlyBinaryUpgrades) { + var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary; + failed = failed || upgradeLosesBinary; + } + if (failed) return; + + debug('probe transport "%s" opened', name); + transport.send([{ type: 'ping', data: 'probe' }]); + transport.once('packet', function (msg) { + if (failed) return; + if ('pong' == msg.type && 'probe' == msg.data) { + debug('probe transport "%s" pong', name); + self.upgrading = true; + self.emit('upgrading', transport); + if (!transport) return; + Socket.priorWebsocketSuccess = 'websocket' == transport.name; + + debug('pausing current transport "%s"', self.transport.name); + self.transport.pause(function () { + if (failed) return; + if ('closed' == self.readyState) return; + debug('changing transport and sending upgrade packet'); + + cleanup(); + + self.setTransport(transport); + transport.send([{ type: 'upgrade' }]); + self.emit('upgrade', transport); + transport = null; + self.upgrading = false; + self.flush(); + }); + } else { + debug('probe transport "%s" failed', name); + var err = new Error('probe error'); + err.transport = transport.name; + self.emit('upgradeError', err); + } + }); + } + + function freezeTransport() { + if (failed) return; + + // Any callback called by transport should be ignored since now + failed = true; + + cleanup(); + + transport.close(); + transport = null; + } + + //Handle any error that happens while probing + function onerror(err) { + var error = new Error('probe error: ' + err); + error.transport = transport.name; + + freezeTransport(); + + debug('probe transport "%s" failed because of error: %s', name, err); + + self.emit('upgradeError', error); + } + + function onTransportClose(){ + onerror("transport closed"); + } + + //When the socket is closed while we're probing + function onclose(){ + onerror("socket closed"); + } + + //When the socket is upgraded while we're probing + function onupgrade(to){ + if (transport && to.name != transport.name) { + debug('"%s" works - aborting "%s"', to.name, transport.name); + freezeTransport(); + } + } + + //Remove all listeners on the transport and on self + function cleanup(){ + transport.removeListener('open', onTransportOpen); + transport.removeListener('error', onerror); + transport.removeListener('close', onTransportClose); + self.removeListener('close', onclose); + self.removeListener('upgrading', onupgrade); + } + + transport.once('open', onTransportOpen); + transport.once('error', onerror); + transport.once('close', onTransportClose); + + this.once('close', onclose); + this.once('upgrading', onupgrade); + + transport.open(); + +}; + +/** + * Called when connection is deemed open. + * + * @api public + */ + +Socket.prototype.onOpen = function () { + debug('socket open'); + this.readyState = 'open'; + Socket.priorWebsocketSuccess = 'websocket' == this.transport.name; + this.emit('open'); + this.flush(); + + // we check for `readyState` in case an `open` + // listener already closed the socket + if ('open' == this.readyState && this.upgrade && this.transport.pause) { + debug('starting upgrade probes'); + for (var i = 0, l = this.upgrades.length; i < l; i++) { + this.probe(this.upgrades[i]); + } + } +}; + +/** + * Handles a packet. + * + * @api private + */ + +Socket.prototype.onPacket = function (packet) { + if ('opening' == this.readyState || 'open' == this.readyState) { + debug('socket receive: type "%s", data "%s"', packet.type, packet.data); + + this.emit('packet', packet); + + // Socket is live - any packet counts + this.emit('heartbeat'); + + switch (packet.type) { + case 'open': + this.onHandshake(parsejson(packet.data)); + break; + + case 'pong': + this.setPing(); + break; + + case 'error': + var err = new Error('server error'); + err.code = packet.data; + this.emit('error', err); + break; + + case 'message': + this.emit('data', packet.data); + this.emit('message', packet.data); + break; + } + } else { + debug('packet received with socket readyState "%s"', this.readyState); + } +}; + +/** + * Called upon handshake completion. + * + * @param {Object} handshake obj + * @api private + */ + +Socket.prototype.onHandshake = function (data) { + this.emit('handshake', data); + this.id = data.sid; + this.transport.query.sid = data.sid; + this.upgrades = this.filterUpgrades(data.upgrades); + this.pingInterval = data.pingInterval; + this.pingTimeout = data.pingTimeout; + this.onOpen(); + // In case open handler closes socket + if ('closed' == this.readyState) return; + this.setPing(); + + // Prolong liveness of socket on heartbeat + this.removeListener('heartbeat', this.onHeartbeat); + this.on('heartbeat', this.onHeartbeat); +}; + +/** + * Resets ping timeout. + * + * @api private + */ + +Socket.prototype.onHeartbeat = function (timeout) { + clearTimeout(this.pingTimeoutTimer); + var self = this; + self.pingTimeoutTimer = setTimeout(function () { + if ('closed' == self.readyState) return; + self.onClose('ping timeout'); + }, timeout || (self.pingInterval + self.pingTimeout)); +}; + +/** + * Pings server every `this.pingInterval` and expects response + * within `this.pingTimeout` or closes connection. + * + * @api private + */ + +Socket.prototype.setPing = function () { + var self = this; + clearTimeout(self.pingIntervalTimer); + self.pingIntervalTimer = setTimeout(function () { + debug('writing ping packet - expecting pong within %sms', self.pingTimeout); + self.ping(); + self.onHeartbeat(self.pingTimeout); + }, self.pingInterval); +}; + +/** +* Sends a ping packet. +* +* @api public +*/ + +Socket.prototype.ping = function () { + this.sendPacket('ping'); +}; + +/** + * Called on `drain` event + * + * @api private + */ + +Socket.prototype.onDrain = function() { + for (var i = 0; i < this.prevBufferLen; i++) { + if (this.callbackBuffer[i]) { + this.callbackBuffer[i](); + } + } + + this.writeBuffer.splice(0, this.prevBufferLen); + this.callbackBuffer.splice(0, this.prevBufferLen); + + // setting prevBufferLen = 0 is very important + // for example, when upgrading, upgrade packet is sent over, + // and a nonzero prevBufferLen could cause problems on `drain` + this.prevBufferLen = 0; + + if (this.writeBuffer.length == 0) { + this.emit('drain'); + } else { + this.flush(); + } +}; + +/** + * Flush write buffers. + * + * @api private + */ + +Socket.prototype.flush = function () { + if ('closed' != this.readyState && this.transport.writable && + !this.upgrading && this.writeBuffer.length) { + debug('flushing %d packets in socket', this.writeBuffer.length); + this.transport.send(this.writeBuffer); + // keep track of current length of writeBuffer + // splice writeBuffer and callbackBuffer on `drain` + this.prevBufferLen = this.writeBuffer.length; + this.emit('flush'); + } +}; + +/** + * Sends a message. + * + * @param {String} message. + * @param {Function} callback function. + * @return {Socket} for chaining. + * @api public + */ + +Socket.prototype.write = +Socket.prototype.send = function (msg, fn) { + this.sendPacket('message', msg, fn); + return this; +}; + +/** + * Sends a packet. + * + * @param {String} packet type. + * @param {String} data. + * @param {Function} callback function. + * @api private + */ + +Socket.prototype.sendPacket = function (type, data, fn) { + if ('closing' == this.readyState || 'closed' == this.readyState) { + return; + } + + var packet = { type: type, data: data }; + this.emit('packetCreate', packet); + this.writeBuffer.push(packet); + this.callbackBuffer.push(fn); + this.flush(); +}; + +/** + * Closes the connection. + * + * @api private + */ + +Socket.prototype.close = function () { + if ('opening' == this.readyState || 'open' == this.readyState) { + this.readyState = 'closing'; + + var self = this; + + function close() { + self.onClose('forced close'); + debug('socket closing - telling transport to close'); + self.transport.close(); + } + + function cleanupAndClose() { + self.removeListener('upgrade', cleanupAndClose); + self.removeListener('upgradeError', cleanupAndClose); + close(); + } + + function waitForUpgrade() { + // wait for upgrade to finish since we can't send packets while pausing a transport + self.once('upgrade', cleanupAndClose); + self.once('upgradeError', cleanupAndClose); + } + + if (this.writeBuffer.length) { + this.once('drain', function() { + if (this.upgrading) { + waitForUpgrade(); + } else { + close(); + } + }); + } else if (this.upgrading) { + waitForUpgrade(); + } else { + close(); + } + } + + return this; +}; + +/** + * Called upon transport error + * + * @api private + */ + +Socket.prototype.onError = function (err) { + debug('socket error %j', err); + Socket.priorWebsocketSuccess = false; + this.emit('error', err); + this.onClose('transport error', err); +}; + +/** + * Called upon transport close. + * + * @api private + */ + +Socket.prototype.onClose = function (reason, desc) { + if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) { + debug('socket close with reason: "%s"', reason); + var self = this; + + // clear timers + clearTimeout(this.pingIntervalTimer); + clearTimeout(this.pingTimeoutTimer); + + // clean buffers in next tick, so developers can still + // grab the buffers on `close` event + setTimeout(function() { + self.writeBuffer = []; + self.callbackBuffer = []; + self.prevBufferLen = 0; + }, 0); + + // stop event from firing again for transport + this.transport.removeAllListeners('close'); + + // ensure transport won't stay open + this.transport.close(); + + // ignore further transport communication + this.transport.removeAllListeners(); + + // set ready state + this.readyState = 'closed'; + + // clear session id + this.id = null; + + // emit close event + this.emit('close', reason, desc); + } +}; + +/** + * Filters upgrades, returning only those matching client transports. + * + * @param {Array} server upgrades + * @api private + * + */ + +Socket.prototype.filterUpgrades = function (upgrades) { + var filteredUpgrades = []; + for (var i = 0, j = upgrades.length; i<j; i++) { + if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]); + } + return filteredUpgrades; +}; + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./transport":4,"./transports":5,"component-emitter":12,"debug":14,"engine.io-parser":17,"indexof":27,"parsejson":28,"parseqs":29,"parseuri":30}],4:[function(_dereq_,module,exports){ +/** + * Module dependencies. + */ + +var parser = _dereq_('engine.io-parser'); +var Emitter = _dereq_('component-emitter'); + +/** + * Module exports. + */ + +module.exports = Transport; + +/** + * Transport abstract constructor. + * + * @param {Object} options. + * @api private + */ + +function Transport (opts) { + this.path = opts.path; + this.hostname = opts.hostname; + this.port = opts.port; + this.secure = opts.secure; + this.query = opts.query; + this.timestampParam = opts.timestampParam; + this.timestampRequests = opts.timestampRequests; + this.readyState = ''; + this.agent = opts.agent || false; + this.socket = opts.socket; + this.enablesXDR = opts.enablesXDR; + + // SSL options for Node.js client + this.pfx = opts.pfx; + this.key = opts.key; + this.passphrase = opts.passphrase; + this.cert = opts.cert; + this.ca = opts.ca; + this.ciphers = opts.ciphers; + this.rejectUnauthorized = opts.rejectUnauthorized; +} + +/** + * Mix in `Emitter`. + */ + +Emitter(Transport.prototype); + +/** + * A counter used to prevent collisions in the timestamps used + * for cache busting. + */ + +Transport.timestamps = 0; + +/** + * Emits an error. + * + * @param {String} str + * @return {Transport} for chaining + * @api public + */ + +Transport.prototype.onError = function (msg, desc) { + var err = new Error(msg); + err.type = 'TransportError'; + err.description = desc; + this.emit('error', err); + return this; +}; + +/** + * Opens the transport. + * + * @api public + */ + +Transport.prototype.open = function () { + if ('closed' == this.readyState || '' == this.readyState) { + this.readyState = 'opening'; + this.doOpen(); + } + + return this; +}; + +/** + * Closes the transport. + * + * @api private + */ + +Transport.prototype.close = function () { + if ('opening' == this.readyState || 'open' == this.readyState) { + this.doClose(); + this.onClose(); + } + + return this; +}; + +/** + * Sends multiple packets. + * + * @param {Array} packets + * @api private + */ + +Transport.prototype.send = function(packets){ + if ('open' == this.readyState) { + this.write(packets); + } else { + throw new Error('Transport not open'); + } +}; + +/** + * Called upon open + * + * @api private + */ + +Transport.prototype.onOpen = function () { + this.readyState = 'open'; + this.writable = true; + this.emit('open'); +}; + +/** + * Called with data. + * + * @param {String} data + * @api private + */ + +Transport.prototype.onData = function(data){ + var packet = parser.decodePacket(data, this.socket.binaryType); + this.onPacket(packet); +}; + +/** + * Called with a decoded packet. + */ + +Transport.prototype.onPacket = function (packet) { + this.emit('packet', packet); +}; + +/** + * Called upon close. + * + * @api private + */ + +Transport.prototype.onClose = function () { + this.readyState = 'closed'; + this.emit('close'); +}; + +},{"component-emitter":12,"engine.io-parser":17}],5:[function(_dereq_,module,exports){ +(function (global){ +/** + * Module dependencies + */ + +var XMLHttpRequest = _dereq_('xmlhttprequest'); +var XHR = _dereq_('./polling-xhr'); +var JSONP = _dereq_('./polling-jsonp'); +var websocket = _dereq_('./websocket'); + +/** + * Export transports. + */ + +exports.polling = polling; +exports.websocket = websocket; + +/** + * Polling transport polymorphic constructor. + * Decides on xhr vs jsonp based on feature detection. + * + * @api private + */ + +function polling(opts){ + var xhr; + var xd = false; + var xs = false; + var jsonp = false !== opts.jsonp; + + if (global.location) { + var isSSL = 'https:' == location.protocol; + var port = location.port; + + // some user agents have empty `location.port` + if (!port) { + port = isSSL ? 443 : 80; + } + + xd = opts.hostname != location.hostname || port != opts.port; + xs = opts.secure != isSSL; + } + + opts.xdomain = xd; + opts.xscheme = xs; + xhr = new XMLHttpRequest(opts); + + if ('open' in xhr && !opts.forceJSONP) { + return new XHR(opts); + } else { + if (!jsonp) throw new Error('JSONP disabled'); + return new JSONP(opts); + } +} + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./polling-jsonp":6,"./polling-xhr":7,"./websocket":9,"xmlhttprequest":10}],6:[function(_dereq_,module,exports){ +(function (global){ + +/** + * Module requirements. + */ + +var Polling = _dereq_('./polling'); +var inherit = _dereq_('component-inherit'); + +/** + * Module exports. + */ + +module.exports = JSONPPolling; + +/** + * Cached regular expressions. + */ + +var rNewline = /\n/g; +var rEscapedNewline = /\\n/g; + +/** + * Global JSONP callbacks. + */ + +var callbacks; + +/** + * Callbacks count. + */ + +var index = 0; + +/** + * Noop. + */ + +function empty () { } + +/** + * JSONP Polling constructor. + * + * @param {Object} opts. + * @api public + */ + +function JSONPPolling (opts) { + Polling.call(this, opts); + + this.query = this.query || {}; + + // define global callbacks array if not present + // we do this here (lazily) to avoid unneeded global pollution + if (!callbacks) { + // we need to consider multiple engines in the same page + if (!global.___eio) global.___eio = []; + callbacks = global.___eio; + } + + // callback identifier + this.index = callbacks.length; + + // add callback to jsonp global + var self = this; + callbacks.push(function (msg) { + self.onData(msg); + }); + + // append to query string + this.query.j = this.index; + + // prevent spurious errors from being emitted when the window is unloaded + if (global.document && global.addEventListener) { + global.addEventListener('beforeunload', function () { + if (self.script) self.script.onerror = empty; + }, false); + } +} + +/** + * Inherits from Polling. + */ + +inherit(JSONPPolling, Polling); + +/* + * JSONP only supports binary as base64 encoded strings + */ + +JSONPPolling.prototype.supportsBinary = false; + +/** + * Closes the socket. + * + * @api private + */ + +JSONPPolling.prototype.doClose = function () { + if (this.script) { + this.script.parentNode.removeChild(this.script); + this.script = null; + } + + if (this.form) { + this.form.parentNode.removeChild(this.form); + this.form = null; + this.iframe = null; + } + + Polling.prototype.doClose.call(this); +}; + +/** + * Starts a poll cycle. + * + * @api private + */ + +JSONPPolling.prototype.doPoll = function () { + var self = this; + var script = document.createElement('script'); + + if (this.script) { + this.script.parentNode.removeChild(this.script); + this.script = null; + } + + script.async = true; + script.src = this.uri(); + script.onerror = function(e){ + self.onError('jsonp poll error',e); + }; + + var insertAt = document.getElementsByTagName('script')[0]; + insertAt.parentNode.insertBefore(script, insertAt); + this.script = script; + + var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent); + + if (isUAgecko) { + setTimeout(function () { + var iframe = document.createElement('iframe'); + document.body.appendChild(iframe); + document.body.removeChild(iframe); + }, 100); + } +}; + +/** + * Writes with a hidden iframe. + * + * @param {String} data to send + * @param {Function} called upon flush. + * @api private + */ + +JSONPPolling.prototype.doWrite = function (data, fn) { + var self = this; + + if (!this.form) { + var form = document.createElement('form'); + var area = document.createElement('textarea'); + var id = this.iframeId = 'eio_iframe_' + this.index; + var iframe; + + form.className = 'socketio'; + form.style.position = 'absolute'; + form.style.top = '-1000px'; + form.style.left = '-1000px'; + form.target = id; + form.method = 'POST'; + form.setAttribute('accept-charset', 'utf-8'); + area.name = 'd'; + form.appendChild(area); + document.body.appendChild(form); + + this.form = form; + this.area = area; + } + + this.form.action = this.uri(); + + function complete () { + initIframe(); + fn(); + } + + function initIframe () { + if (self.iframe) { + try { + self.form.removeChild(self.iframe); + } catch (e) { + self.onError('jsonp polling iframe removal error', e); + } + } + + try { + // ie6 dynamic iframes with target="" support (thanks Chris Lambacher) + var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">'; + iframe = document.createElement(html); + } catch (e) { + iframe = document.createElement('iframe'); + iframe.name = self.iframeId; + iframe.src = 'javascript:0'; + } + + iframe.id = self.iframeId; + + self.form.appendChild(iframe); + self.iframe = iframe; + } + + initIframe(); + + // escape \n to prevent it from being converted into \r\n by some UAs + // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side + data = data.replace(rEscapedNewline, '\\\n'); + this.area.value = data.replace(rNewline, '\\n'); + + try { + this.form.submit(); + } catch(e) {} + + if (this.iframe.attachEvent) { + this.iframe.onreadystatechange = function(){ + if (self.iframe.readyState == 'complete') { + complete(); + } + }; + } else { + this.iframe.onload = complete; + } +}; + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./polling":8,"component-inherit":13}],7:[function(_dereq_,module,exports){ +(function (global){ +/** + * Module requirements. + */ + +var XMLHttpRequest = _dereq_('xmlhttprequest'); +var Polling = _dereq_('./polling'); +var Emitter = _dereq_('component-emitter'); +var inherit = _dereq_('component-inherit'); +var debug = _dereq_('debug')('engine.io-client:polling-xhr'); + +/** + * Module exports. + */ + +module.exports = XHR; +module.exports.Request = Request; + +/** + * Empty function + */ + +function empty(){} + +/** + * XHR Polling constructor. + * + * @param {Object} opts + * @api public + */ + +function XHR(opts){ + Polling.call(this, opts); + + if (global.location) { + var isSSL = 'https:' == location.protocol; + var port = location.port; + + // some user agents have empty `location.port` + if (!port) { + port = isSSL ? 443 : 80; + } + + this.xd = opts.hostname != global.location.hostname || + port != opts.port; + this.xs = opts.secure != isSSL; + } +} + +/** + * Inherits from Polling. + */ + +inherit(XHR, Polling); + +/** + * XHR supports binary + */ + +XHR.prototype.supportsBinary = true; + +/** + * Creates a request. + * + * @param {String} method + * @api private + */ + +XHR.prototype.request = function(opts){ + opts = opts || {}; + opts.uri = this.uri(); + opts.xd = this.xd; + opts.xs = this.xs; + opts.agent = this.agent || false; + opts.supportsBinary = this.supportsBinary; + opts.enablesXDR = this.enablesXDR; + + // SSL options for Node.js client + opts.pfx = this.pfx; + opts.key = this.key; + opts.passphrase = this.passphrase; + opts.cert = this.cert; + opts.ca = this.ca; + opts.ciphers = this.ciphers; + opts.rejectUnauthorized = this.rejectUnauthorized; + + return new Request(opts); +}; + +/** + * Sends data. + * + * @param {String} data to send. + * @param {Function} called upon flush. + * @api private + */ + +XHR.prototype.doWrite = function(data, fn){ + var isBinary = typeof data !== 'string' && data !== undefined; + var req = this.request({ method: 'POST', data: data, isBinary: isBinary }); + var self = this; + req.on('success', fn); + req.on('error', function(err){ + self.onError('xhr post error', err); + }); + this.sendXhr = req; +}; + +/** + * Starts a poll cycle. + * + * @api private + */ + +XHR.prototype.doPoll = function(){ + debug('xhr poll'); + var req = this.request(); + var self = this; + req.on('data', function(data){ + self.onData(data); + }); + req.on('error', function(err){ + self.onError('xhr poll error', err); + }); + this.pollXhr = req; +}; + +/** + * Request constructor + * + * @param {Object} options + * @api public + */ + +function Request(opts){ + this.method = opts.method || 'GET'; + this.uri = opts.uri; + this.xd = !!opts.xd; + this.xs = !!opts.xs; + this.async = false !== opts.async; + this.data = undefined != opts.data ? opts.data : null; + this.agent = opts.agent; + this.isBinary = opts.isBinary; + this.supportsBinary = opts.supportsBinary; + this.enablesXDR = opts.enablesXDR; + + // SSL options for Node.js client + this.pfx = opts.pfx; + this.key = opts.key; + this.passphrase = opts.passphrase; + this.cert = opts.cert; + this.ca = opts.ca; + this.ciphers = opts.ciphers; + this.rejectUnauthorized = opts.rejectUnauthorized; + + this.create(); +} + +/** + * Mix in `Emitter`. + */ + +Emitter(Request.prototype); + +/** + * Creates the XHR object and sends the request. + * + * @api private + */ + +Request.prototype.create = function(){ + var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR }; + + // SSL options for Node.js client + opts.pfx = this.pfx; + opts.key = this.key; + opts.passphrase = this.passphrase; + opts.cert = this.cert; + opts.ca = this.ca; + opts.ciphers = this.ciphers; + opts.rejectUnauthorized = this.rejectUnauthorized; + + var xhr = this.xhr = new XMLHttpRequest(opts); + var self = this; + + try { + debug('xhr open %s: %s', this.method, this.uri); + xhr.open(this.method, this.uri, this.async); + if (this.supportsBinary) { + // This has to be done after open because Firefox is stupid + // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension + xhr.responseType = 'arraybuffer'; + } + + if ('POST' == this.method) { + try { + if (this.isBinary) { + xhr.setRequestHeader('Content-type', 'application/octet-stream'); + } else { + xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8'); + } + } catch (e) {} + } + + // ie6 check + if ('withCredentials' in xhr) { + xhr.withCredentials = true; + } + + if (this.hasXDR()) { + xhr.onload = function(){ + self.onLoad(); + }; + xhr.onerror = function(){ + self.onError(xhr.responseText); + }; + } else { + xhr.onreadystatechange = function(){ + if (4 != xhr.readyState) return; + if (200 == xhr.status || 1223 == xhr.status) { + self.onLoad(); + } else { + // make sure the `error` event handler that's user-set + // does not throw in the same tick and gets caught here + setTimeout(function(){ + self.onError(xhr.status); + }, 0); + } + }; + } + + debug('xhr data %s', this.data); + xhr.send(this.data); + } catch (e) { + // Need to defer since .create() is called directly fhrom the constructor + // and thus the 'error' event can only be only bound *after* this exception + // occurs. Therefore, also, we cannot throw here at all. + setTimeout(function() { + self.onError(e); + }, 0); + return; + } + + if (global.document) { + this.index = Request.requestsCount++; + Request.requests[this.index] = this; + } +}; + +/** + * Called upon successful response. + * + * @api private + */ + +Request.prototype.onSuccess = function(){ + this.emit('success'); + this.cleanup(); +}; + +/** + * Called if we have data. + * + * @api private + */ + +Request.prototype.onData = function(data){ + this.emit('data', data); + this.onSuccess(); +}; + +/** + * Called upon error. + * + * @api private + */ + +Request.prototype.onError = function(err){ + this.emit('error', err); + this.cleanup(true); +}; + +/** + * Cleans up house. + * + * @api private + */ + +Request.prototype.cleanup = function(fromError){ + if ('undefined' == typeof this.xhr || null === this.xhr) { + return; + } + // xmlhttprequest + if (this.hasXDR()) { + this.xhr.onload = this.xhr.onerror = empty; + } else { + this.xhr.onreadystatechange = empty; + } + + if (fromError) { + try { + this.xhr.abort(); + } catch(e) {} + } + + if (global.document) { + delete Request.requests[this.index]; + } + + this.xhr = null; +}; + +/** + * Called upon load. + * + * @api private + */ + +Request.prototype.onLoad = function(){ + var data; + try { + var contentType; + try { + contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0]; + } catch (e) {} + if (contentType === 'application/octet-stream') { + data = this.xhr.response; + } else { + if (!this.supportsBinary) { + data = this.xhr.responseText; + } else { + data = 'ok'; + } + } + } catch (e) { + this.onError(e); + } + if (null != data) { + this.onData(data); + } +}; + +/** + * Check if it has XDomainRequest. + * + * @api private + */ + +Request.prototype.hasXDR = function(){ + return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR; +}; + +/** + * Aborts the request. + * + * @api public + */ + +Request.prototype.abort = function(){ + this.cleanup(); +}; + +/** + * Aborts pending requests when unloading the window. This is needed to prevent + * memory leaks (e.g. when using IE) and to ensure that no spurious error is + * emitted. + */ + +if (global.document) { + Request.requestsCount = 0; + Request.requests = {}; + if (global.attachEvent) { + global.attachEvent('onunload', unloadHandler); + } else if (global.addEventListener) { + global.addEventListener('beforeunload', unloadHandler, false); + } +} + +function unloadHandler() { + for (var i in Request.requests) { + if (Request.requests.hasOwnProperty(i)) { + Request.requests[i].abort(); + } + } +} + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./polling":8,"component-emitter":12,"component-inherit":13,"debug":14,"xmlhttprequest":10}],8:[function(_dereq_,module,exports){ +/** + * Module dependencies. + */ + +var Transport = _dereq_('../transport'); +var parseqs = _dereq_('parseqs'); +var parser = _dereq_('engine.io-parser'); +var inherit = _dereq_('component-inherit'); +var debug = _dereq_('debug')('engine.io-client:polling'); + +/** + * Module exports. + */ + +module.exports = Polling; + +/** + * Is XHR2 supported? + */ + +var hasXHR2 = (function() { + var XMLHttpRequest = _dereq_('xmlhttprequest'); + var xhr = new XMLHttpRequest({ xdomain: false }); + return null != xhr.responseType; +})(); + +/** + * Polling interface. + * + * @param {Object} opts + * @api private + */ + +function Polling(opts){ + var forceBase64 = (opts && opts.forceBase64); + if (!hasXHR2 || forceBase64) { + this.supportsBinary = false; + } + Transport.call(this, opts); +} + +/** + * Inherits from Transport. + */ + +inherit(Polling, Transport); + +/** + * Transport name. + */ + +Polling.prototype.name = 'polling'; + +/** + * Opens the socket (triggers polling). We write a PING message to determine + * when the transport is open. + * + * @api private + */ + +Polling.prototype.doOpen = function(){ + this.poll(); +}; + +/** + * Pauses polling. + * + * @param {Function} callback upon buffers are flushed and transport is paused + * @api private + */ + +Polling.prototype.pause = function(onPause){ + var pending = 0; + var self = this; + + this.readyState = 'pausing'; + + function pause(){ + debug('paused'); + self.readyState = 'paused'; + onPause(); + } + + if (this.polling || !this.writable) { + var total = 0; + + if (this.polling) { + debug('we are currently polling - waiting to pause'); + total++; + this.once('pollComplete', function(){ + debug('pre-pause polling complete'); + --total || pause(); + }); + } + + if (!this.writable) { + debug('we are currently writing - waiting to pause'); + total++; + this.once('drain', function(){ + debug('pre-pause writing complete'); + --total || pause(); + }); + } + } else { + pause(); + } +}; + +/** + * Starts polling cycle. + * + * @api public + */ + +Polling.prototype.poll = function(){ + debug('polling'); + this.polling = true; + this.doPoll(); + this.emit('poll'); +}; + +/** + * Overloads onData to detect payloads. + * + * @api private + */ + +Polling.prototype.onData = function(data){ + var self = this; + debug('polling got data %s', data); + var callback = function(packet, index, total) { + // if its the first message we consider the transport open + if ('opening' == self.readyState) { + self.onOpen(); + } + + // if its a close packet, we close the ongoing requests + if ('close' == packet.type) { + self.onClose(); + return false; + } + + // otherwise bypass onData and handle the message + self.onPacket(packet); + }; + + // decode payload + parser.decodePayload(data, this.socket.binaryType, callback); + + // if an event did not trigger closing + if ('closed' != this.readyState) { + // if we got data we're not polling + this.polling = false; + this.emit('pollComplete'); + + if ('open' == this.readyState) { + this.poll(); + } else { + debug('ignoring poll - transport state "%s"', this.readyState); + } + } +}; + +/** + * For polling, send a close packet. + * + * @api private + */ + +Polling.prototype.doClose = function(){ + var self = this; + + function close(){ + debug('writing close packet'); + self.write([{ type: 'close' }]); + } + + if ('open' == this.readyState) { + debug('transport open - closing'); + close(); + } else { + // in case we're trying to close while + // handshaking is in progress (GH-164) + debug('transport not open - deferring close'); + this.once('open', close); + } +}; + +/** + * Writes a packets payload. + * + * @param {Array} data packets + * @param {Function} drain callback + * @api private + */ + +Polling.prototype.write = function(packets){ + var self = this; + this.writable = false; + var callbackfn = function() { + self.writable = true; + self.emit('drain'); + }; + + var self = this; + parser.encodePayload(packets, this.supportsBinary, function(data) { + self.doWrite(data, callbackfn); + }); +}; + +/** + * Generates uri for connection. + * + * @api private + */ + +Polling.prototype.uri = function(){ + var query = this.query || {}; + var schema = this.secure ? 'https' : 'http'; + var port = ''; + + // cache busting is forced + if (false !== this.timestampRequests) { + query[this.timestampParam] = +new Date + '-' + Transport.timestamps++; + } + + if (!this.supportsBinary && !query.sid) { + query.b64 = 1; + } + + query = parseqs.encode(query); + + // avoid port if default for schema + if (this.port && (('https' == schema && this.port != 443) || + ('http' == schema && this.port != 80))) { + port = ':' + this.port; + } + + // prepend ? to query + if (query.length) { + query = '?' + query; + } + + return schema + '://' + this.hostname + port + this.path + query; +}; + +},{"../transport":4,"component-inherit":13,"debug":14,"engine.io-parser":17,"parseqs":29,"xmlhttprequest":10}],9:[function(_dereq_,module,exports){ +/** + * Module dependencies. + */ + +var Transport = _dereq_('../transport'); +var parser = _dereq_('engine.io-parser'); +var parseqs = _dereq_('parseqs'); +var inherit = _dereq_('component-inherit'); +var debug = _dereq_('debug')('engine.io-client:websocket'); + +/** + * `ws` exposes a WebSocket-compatible interface in + * Node, or the `WebSocket` or `MozWebSocket` globals + * in the browser. + */ + +var WebSocket = _dereq_('ws'); + +/** + * Module exports. + */ + +module.exports = WS; + +/** + * WebSocket transport constructor. + * + * @api {Object} connection options + * @api public + */ + +function WS(opts){ + var forceBase64 = (opts && opts.forceBase64); + if (forceBase64) { + this.supportsBinary = false; + } + Transport.call(this, opts); +} + +/** + * Inherits from Transport. + */ + +inherit(WS, Transport); + +/** + * Transport name. + * + * @api public + */ + +WS.prototype.name = 'websocket'; + +/* + * WebSockets support binary + */ + +WS.prototype.supportsBinary = true; + +/** + * Opens socket. + * + * @api private + */ + +WS.prototype.doOpen = function(){ + if (!this.check()) { + // let probe timeout + return; + } + + var self = this; + var uri = this.uri(); + var protocols = void(0); + var opts = { agent: this.agent }; + + // SSL options for Node.js client + opts.pfx = this.pfx; + opts.key = this.key; + opts.passphrase = this.passphrase; + opts.cert = this.cert; + opts.ca = this.ca; + opts.ciphers = this.ciphers; + opts.rejectUnauthorized = this.rejectUnauthorized; + + this.ws = new WebSocket(uri, protocols, opts); + + if (this.ws.binaryType === undefined) { + this.supportsBinary = false; + } + + this.ws.binaryType = 'arraybuffer'; + this.addEventListeners(); +}; + +/** + * Adds event listeners to the socket + * + * @api private + */ + +WS.prototype.addEventListeners = function(){ + var self = this; + + this.ws.onopen = function(){ + self.onOpen(); + }; + this.ws.onclose = function(){ + self.onClose(); + }; + this.ws.onmessage = function(ev){ + self.onData(ev.data); + }; + this.ws.onerror = function(e){ + self.onError('websocket error', e); + }; +}; + +/** + * Override `onData` to use a timer on iOS. + * See: https://gist.github.com/mloughran/2052006 + * + * @api private + */ + +if ('undefined' != typeof navigator + && /iPad|iPhone|iPod/i.test(navigator.userAgent)) { + WS.prototype.onData = function(data){ + var self = this; + setTimeout(function(){ + Transport.prototype.onData.call(self, data); + }, 0); + }; +} + +/** + * Writes data to socket. + * + * @param {Array} array of packets. + * @api private + */ + +WS.prototype.write = function(packets){ + var self = this; + this.writable = false; + // encodePacket efficient as it uses WS framing + // no need for encodePayload + for (var i = 0, l = packets.length; i < l; i++) { + parser.encodePacket(packets[i], this.supportsBinary, function(data) { + //Sometimes the websocket has already been closed but the browser didn't + //have a chance of informing us about it yet, in that case send will + //throw an error + try { + self.ws.send(data); + } catch (e){ + debug('websocket closed before onclose event'); + } + }); + } + + function ondrain() { + self.writable = true; + self.emit('drain'); + } + // fake drain + // defer to next tick to allow Socket to clear writeBuffer + setTimeout(ondrain, 0); +}; + +/** + * Called upon close + * + * @api private + */ + +WS.prototype.onClose = function(){ + Transport.prototype.onClose.call(this); +}; + +/** + * Closes socket. + * + * @api private + */ + +WS.prototype.doClose = function(){ + if (typeof this.ws !== 'undefined') { + this.ws.close(); + } +}; + +/** + * Generates uri for connection. + * + * @api private + */ + +WS.prototype.uri = function(){ + var query = this.query || {}; + var schema = this.secure ? 'wss' : 'ws'; + var port = ''; + + // avoid port if default for schema + if (this.port && (('wss' == schema && this.port != 443) + || ('ws' == schema && this.port != 80))) { + port = ':' + this.port; + } + + // append timestamp to URI + if (this.timestampRequests) { + query[this.timestampParam] = +new Date; + } + + // communicate binary support capabilities + if (!this.supportsBinary) { + query.b64 = 1; + } + + query = parseqs.encode(query); + + // prepend ? to query + if (query.length) { + query = '?' + query; + } + + return schema + '://' + this.hostname + port + this.path + query; +}; + +/** + * Feature detection for WebSocket. + * + * @return {Boolean} whether this transport is available. + * @api public + */ + +WS.prototype.check = function(){ + return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name); +}; + +},{"../transport":4,"component-inherit":13,"debug":14,"engine.io-parser":17,"parseqs":29,"ws":31}],10:[function(_dereq_,module,exports){ +// browser shim for xmlhttprequest module +var hasCORS = _dereq_('has-cors'); + +module.exports = function(opts) { + var xdomain = opts.xdomain; + + // scheme must be same when usign XDomainRequest + // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx + var xscheme = opts.xscheme; + + // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default. + // https://github.com/Automattic/engine.io-client/pull/217 + var enablesXDR = opts.enablesXDR; + + // XMLHttpRequest can be disabled on IE + try { + if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) { + return new XMLHttpRequest(); + } + } catch (e) { } + + // Use XDomainRequest for IE8 if enablesXDR is true + // because loading bar keeps flashing when using jsonp-polling + // https://github.com/yujiosaka/socke.io-ie8-loading-example + try { + if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) { + return new XDomainRequest(); + } + } catch (e) { } + + if (!xdomain) { + try { + return new ActiveXObject('Microsoft.XMLHTTP'); + } catch(e) { } + } +} + +},{"has-cors":25}],11:[function(_dereq_,module,exports){ +(function (global){ +/** + * Create a blob builder even when vendor prefixes exist + */ + +var BlobBuilder = global.BlobBuilder + || global.WebKitBlobBuilder + || global.MSBlobBuilder + || global.MozBlobBuilder; + +/** + * Check if Blob constructor is supported + */ + +var blobSupported = (function() { + try { + var b = new Blob(['hi']); + return b.size == 2; + } catch(e) { + return false; + } +})(); + +/** + * Check if BlobBuilder is supported + */ + +var blobBuilderSupported = BlobBuilder + && BlobBuilder.prototype.append + && BlobBuilder.prototype.getBlob; + +function BlobBuilderConstructor(ary, options) { + options = options || {}; + + var bb = new BlobBuilder(); + for (var i = 0; i < ary.length; i++) { + bb.append(ary[i]); + } + return (options.type) ? bb.getBlob(options.type) : bb.getBlob(); +}; + +module.exports = (function() { + if (blobSupported) { + return global.Blob; + } else if (blobBuilderSupported) { + return BlobBuilderConstructor; + } else { + return undefined; + } +})(); + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],12:[function(_dereq_,module,exports){ + +/** + * Expose `Emitter`. + */ + +module.exports = Emitter; + +/** + * Initialize a new `Emitter`. + * + * @api public + */ + +function Emitter(obj) { + if (obj) return mixin(obj); +}; + +/** + * Mixin the emitter properties. + * + * @param {Object} obj + * @return {Object} + * @api private + */ + +function mixin(obj) { + for (var key in Emitter.prototype) { + obj[key] = Emitter.prototype[key]; + } + return obj; +} + +/** + * Listen on the given `event` with `fn`. + * + * @param {String} event + * @param {Function} fn + * @return {Emitter} + * @api public + */ + +Emitter.prototype.on = +Emitter.prototype.addEventListener = function(event, fn){ + this._callbacks = this._callbacks || {}; + (this._callbacks[event] = this._callbacks[event] || []) + .push(fn); + return this; +}; + +/** + * Adds an `event` listener that will be invoked a single + * time then automatically removed. + * + * @param {String} event + * @param {Function} fn + * @return {Emitter} + * @api public + */ + +Emitter.prototype.once = function(event, fn){ + var self = this; + this._callbacks = this._callbacks || {}; + + function on() { + self.off(event, on); + fn.apply(this, arguments); + } + + on.fn = fn; + this.on(event, on); + return this; +}; + +/** + * Remove the given callback for `event` or all + * registered callbacks. + * + * @param {String} event + * @param {Function} fn + * @return {Emitter} + * @api public + */ + +Emitter.prototype.off = +Emitter.prototype.removeListener = +Emitter.prototype.removeAllListeners = +Emitter.prototype.removeEventListener = function(event, fn){ + this._callbacks = this._callbacks || {}; + + // all + if (0 == arguments.length) { + this._callbacks = {}; + return this; + } + + // specific event + var callbacks = this._callbacks[event]; + if (!callbacks) return this; + + // remove all handlers + if (1 == arguments.length) { + delete this._callbacks[event]; + return this; + } + + // remove specific handler + var cb; + for (var i = 0; i < callbacks.length; i++) { + cb = callbacks[i]; + if (cb === fn || cb.fn === fn) { + callbacks.splice(i, 1); + break; + } + } + return this; +}; + +/** + * Emit `event` with the given args. + * + * @param {String} event + * @param {Mixed} ... + * @return {Emitter} + */ + +Emitter.prototype.emit = function(event){ + this._callbacks = this._callbacks || {}; + var args = [].slice.call(arguments, 1) + , callbacks = this._callbacks[event]; + + if (callbacks) { + callbacks = callbacks.slice(0); + for (var i = 0, len = callbacks.length; i < len; ++i) { + callbacks[i].apply(this, args); + } + } + + return this; +}; + +/** + * Return array of callbacks for `event`. + * + * @param {String} event + * @return {Array} + * @api public + */ + +Emitter.prototype.listeners = function(event){ + this._callbacks = this._callbacks || {}; + return this._callbacks[event] || []; +}; + +/** + * Check if this emitter has `event` handlers. + * + * @param {String} event + * @return {Boolean} + * @api public + */ + +Emitter.prototype.hasListeners = function(event){ + return !! this.listeners(event).length; +}; + +},{}],13:[function(_dereq_,module,exports){ + +module.exports = function(a, b){ + var fn = function(){}; + fn.prototype = b.prototype; + a.prototype = new fn; + a.prototype.constructor = a; +}; +},{}],14:[function(_dereq_,module,exports){ + +/** + * This is the web browser implementation of `debug()`. + * + * Expose `debug()` as the module. + */ + +exports = module.exports = _dereq_('./debug'); +exports.log = log; +exports.formatArgs = formatArgs; +exports.save = save; +exports.load = load; +exports.useColors = useColors; + +/** + * Colors. + */ + +exports.colors = [ + 'lightseagreen', + 'forestgreen', + 'goldenrod', + 'dodgerblue', + 'darkorchid', + 'crimson' +]; + +/** + * Currently only WebKit-based Web Inspectors, Firefox >= v31, + * and the Firebug extension (any Firefox version) are known + * to support "%c" CSS customizations. + * + * TODO: add a `localStorage` variable to explicitly enable/disable colors + */ + +function useColors() { + // is webkit? http://stackoverflow.com/a/16459606/376773 + return ('WebkitAppearance' in document.documentElement.style) || + // is firebug? http://stackoverflow.com/a/398120/376773 + (window.console && (console.firebug || (console.exception && console.table))) || + // is firefox >= v31? + // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages + (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31); +} + +/** + * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default. + */ + +exports.formatters.j = function(v) { + return JSON.stringify(v); +}; + + +/** + * Colorize log arguments if enabled. + * + * @api public + */ + +function formatArgs() { + var args = arguments; + var useColors = this.useColors; + + args[0] = (useColors ? '%c' : '') + + this.namespace + + (useColors ? ' %c' : ' ') + + args[0] + + (useColors ? '%c ' : ' ') + + '+' + exports.humanize(this.diff); + + if (!useColors) return args; + + var c = 'color: ' + this.color; + args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1)); + + // the final "%c" is somewhat tricky, because there could be other + // arguments passed either before or after the %c, so we need to + // figure out the correct index to insert the CSS into + var index = 0; + var lastC = 0; + args[0].replace(/%[a-z%]/g, function(match) { + if ('%' === match) return; + index++; + if ('%c' === match) { + // we only are interested in the *last* %c + // (the user may have provided their own) + lastC = index; + } + }); + + args.splice(lastC, 0, c); + return args; +} + +/** + * Invokes `console.log()` when available. + * No-op when `console.log` is not a "function". + * + * @api public + */ + +function log() { + // This hackery is required for IE8, + // where the `console.log` function doesn't have 'apply' + return 'object' == typeof console + && 'function' == typeof console.log + && Function.prototype.apply.call(console.log, console, arguments); +} + +/** + * Save `namespaces`. + * + * @param {String} namespaces + * @api private + */ + +function save(namespaces) { + try { + if (null == namespaces) { + localStorage.removeItem('debug'); + } else { + localStorage.debug = namespaces; + } + } catch(e) {} +} + +/** + * Load `namespaces`. + * + * @return {String} returns the previously persisted debug modes + * @api private + */ + +function load() { + var r; + try { + r = localStorage.debug; + } catch(e) {} + return r; +} + +/** + * Enable namespaces listed in `localStorage.debug` initially. + */ + +exports.enable(load()); + +},{"./debug":15}],15:[function(_dereq_,module,exports){ + +/** + * This is the common logic for both the Node.js and web browser + * implementations of `debug()`. + * + * Expose `debug()` as the module. + */ + +exports = module.exports = debug; +exports.coerce = coerce; +exports.disable = disable; +exports.enable = enable; +exports.enabled = enabled; +exports.humanize = _dereq_('ms'); + +/** + * The currently active debug mode names, and names to skip. + */ + +exports.names = []; +exports.skips = []; + +/** + * Map of special "%n" handling functions, for the debug "format" argument. + * + * Valid key names are a single, lowercased letter, i.e. "n". + */ + +exports.formatters = {}; + +/** + * Previously assigned color. + */ + +var prevColor = 0; + +/** + * Previous log timestamp. + */ + +var prevTime; + +/** + * Select a color. + * + * @return {Number} + * @api private + */ + +function selectColor() { + return exports.colors[prevColor++ % exports.colors.length]; +} + +/** + * Create a debugger with the given `namespace`. + * + * @param {String} namespace + * @return {Function} + * @api public + */ + +function debug(namespace) { + + // define the `disabled` version + function disabled() { + } + disabled.enabled = false; + + // define the `enabled` version + function enabled() { + + var self = enabled; + + // set `diff` timestamp + var curr = +new Date(); + var ms = curr - (prevTime || curr); + self.diff = ms; + self.prev = prevTime; + self.curr = curr; + prevTime = curr; + + // add the `color` if not set + if (null == self.useColors) self.useColors = exports.useColors(); + if (null == self.color && self.useColors) self.color = selectColor(); + + var args = Array.prototype.slice.call(arguments); + + args[0] = exports.coerce(args[0]); + + if ('string' !== typeof args[0]) { + // anything else let's inspect with %o + args = ['%o'].concat(args); + } + + // apply any `formatters` transformations + var index = 0; + args[0] = args[0].replace(/%([a-z%])/g, function(match, format) { + // if we encounter an escaped % then don't increase the array index + if (match === '%') return match; + index++; + var formatter = exports.formatters[format]; + if ('function' === typeof formatter) { + var val = args[index]; + match = formatter.call(self, val); + + // now we need to remove `args[index]` since it's inlined in the `format` + args.splice(index, 1); + index--; + } + return match; + }); + + if ('function' === typeof exports.formatArgs) { + args = exports.formatArgs.apply(self, args); + } + var logFn = enabled.log || exports.log || console.log.bind(console); + logFn.apply(self, args); + } + enabled.enabled = true; + + var fn = exports.enabled(namespace) ? enabled : disabled; + + fn.namespace = namespace; + + return fn; +} + +/** + * Enables a debug mode by namespaces. This can include modes + * separated by a colon and wildcards. + * + * @param {String} namespaces + * @api public + */ + +function enable(namespaces) { + exports.save(namespaces); + + var split = (namespaces || '').split(/[\s,]+/); + var len = split.length; + + for (var i = 0; i < len; i++) { + if (!split[i]) continue; // ignore empty strings + namespaces = split[i].replace(/\*/g, '.*?'); + if (namespaces[0] === '-') { + exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$')); + } else { + exports.names.push(new RegExp('^' + namespaces + '$')); + } + } +} + +/** + * Disable debug output. + * + * @api public + */ + +function disable() { + exports.enable(''); +} + +/** + * Returns true if the given mode name is enabled, false otherwise. + * + * @param {String} name + * @return {Boolean} + * @api public + */ + +function enabled(name) { + var i, len; + for (i = 0, len = exports.skips.length; i < len; i++) { + if (exports.skips[i].test(name)) { + return false; + } + } + for (i = 0, len = exports.names.length; i < len; i++) { + if (exports.names[i].test(name)) { + return true; + } + } + return false; +} + +/** + * Coerce `val`. + * + * @param {Mixed} val + * @return {Mixed} + * @api private + */ + +function coerce(val) { + if (val instanceof Error) return val.stack || val.message; + return val; +} + +},{"ms":16}],16:[function(_dereq_,module,exports){ +/** + * Helpers. + */ + +var s = 1000; +var m = s * 60; +var h = m * 60; +var d = h * 24; +var y = d * 365.25; + +/** + * Parse or format the given `val`. + * + * Options: + * + * - `long` verbose formatting [false] + * + * @param {String|Number} val + * @param {Object} options + * @return {String|Number} + * @api public + */ + +module.exports = function(val, options){ + options = options || {}; + if ('string' == typeof val) return parse(val); + return options.long + ? long(val) + : short(val); +}; + +/** + * Parse the given `str` and return milliseconds. + * + * @param {String} str + * @return {Number} + * @api private + */ + +function parse(str) { + var match = /^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i.exec(str); + if (!match) return; + var n = parseFloat(match[1]); + var type = (match[2] || 'ms').toLowerCase(); + switch (type) { + case 'years': + case 'year': + case 'y': + return n * y; + case 'days': + case 'day': + case 'd': + return n * d; + case 'hours': + case 'hour': + case 'h': + return n * h; + case 'minutes': + case 'minute': + case 'm': + return n * m; + case 'seconds': + case 'second': + case 's': + return n * s; + case 'ms': + return n; + } +} + +/** + * Short format for `ms`. + * + * @param {Number} ms + * @return {String} + * @api private + */ + +function short(ms) { + if (ms >= d) return Math.round(ms / d) + 'd'; + if (ms >= h) return Math.round(ms / h) + 'h'; + if (ms >= m) return Math.round(ms / m) + 'm'; + if (ms >= s) return Math.round(ms / s) + 's'; + return ms + 'ms'; +} + +/** + * Long format for `ms`. + * + * @param {Number} ms + * @return {String} + * @api private + */ + +function long(ms) { + return plural(ms, d, 'day') + || plural(ms, h, 'hour') + || plural(ms, m, 'minute') + || plural(ms, s, 'second') + || ms + ' ms'; +} + +/** + * Pluralization helper. + */ + +function plural(ms, n, name) { + if (ms < n) return; + if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name; + return Math.ceil(ms / n) + ' ' + name + 's'; +} + +},{}],17:[function(_dereq_,module,exports){ +(function (global){ +/** + * Module dependencies. + */ + +var keys = _dereq_('./keys'); +var hasBinary = _dereq_('has-binary'); +var sliceBuffer = _dereq_('arraybuffer.slice'); +var base64encoder = _dereq_('base64-arraybuffer'); +var after = _dereq_('after'); +var utf8 = _dereq_('utf8'); + +/** + * Check if we are running an android browser. That requires us to use + * ArrayBuffer with polling transports... + * + * http://ghinda.net/jpeg-blob-ajax-android/ + */ + +var isAndroid = navigator.userAgent.match(/Android/i); + +/** + * Check if we are running in PhantomJS. + * Uploading a Blob with PhantomJS does not work correctly, as reported here: + * https://github.com/ariya/phantomjs/issues/11395 + * @type boolean + */ +var isPhantomJS = /PhantomJS/i.test(navigator.userAgent); + +/** + * When true, avoids using Blobs to encode payloads. + * @type boolean + */ +var dontSendBlobs = isAndroid || isPhantomJS; + +/** + * Current protocol version. + */ + +exports.protocol = 3; + +/** + * Packet types. + */ + +var packets = exports.packets = { + open: 0 // non-ws + , close: 1 // non-ws + , ping: 2 + , pong: 3 + , message: 4 + , upgrade: 5 + , noop: 6 +}; + +var packetslist = keys(packets); + +/** + * Premade error packet. + */ + +var err = { type: 'error', data: 'parser error' }; + +/** + * Create a blob api even for blob builder when vendor prefixes exist + */ + +var Blob = _dereq_('blob'); + +/** + * Encodes a packet. + * + * <packet type id> [ <data> ] + * + * Example: + * + * 5hello world + * 3 + * 4 + * + * Binary is encoded in an identical principle + * + * @api private + */ + +exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) { + if ('function' == typeof supportsBinary) { + callback = supportsBinary; + supportsBinary = false; + } + + if ('function' == typeof utf8encode) { + callback = utf8encode; + utf8encode = null; + } + + var data = (packet.data === undefined) + ? undefined + : packet.data.buffer || packet.data; + + if (global.ArrayBuffer && data instanceof ArrayBuffer) { + return encodeArrayBuffer(packet, supportsBinary, callback); + } else if (Blob && data instanceof global.Blob) { + return encodeBlob(packet, supportsBinary, callback); + } + + // might be an object with { base64: true, data: dataAsBase64String } + if (data && data.base64) { + return encodeBase64Object(packet, callback); + } + + // Sending data as a utf-8 string + var encoded = packets[packet.type]; + + // data fragment is optional + if (undefined !== packet.data) { + encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data); + } + + return callback('' + encoded); + +}; + +function encodeBase64Object(packet, callback) { + // packet data is an object { base64: true, data: dataAsBase64String } + var message = 'b' + exports.packets[packet.type] + packet.data.data; + return callback(message); +} + +/** + * Encode packet helpers for binary types + */ + +function encodeArrayBuffer(packet, supportsBinary, callback) { + if (!supportsBinary) { + return exports.encodeBase64Packet(packet, callback); + } + + var data = packet.data; + var contentArray = new Uint8Array(data); + var resultBuffer = new Uint8Array(1 + data.byteLength); + + resultBuffer[0] = packets[packet.type]; + for (var i = 0; i < contentArray.length; i++) { + resultBuffer[i+1] = contentArray[i]; + } + + return callback(resultBuffer.buffer); +} + +function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) { + if (!supportsBinary) { + return exports.encodeBase64Packet(packet, callback); + } + + var fr = new FileReader(); + fr.onload = function() { + packet.data = fr.result; + exports.encodePacket(packet, supportsBinary, true, callback); + }; + return fr.readAsArrayBuffer(packet.data); +} + +function encodeBlob(packet, supportsBinary, callback) { + if (!supportsBinary) { + return exports.encodeBase64Packet(packet, callback); + } + + if (dontSendBlobs) { + return encodeBlobAsArrayBuffer(packet, supportsBinary, callback); + } + + var length = new Uint8Array(1); + length[0] = packets[packet.type]; + var blob = new Blob([length.buffer, packet.data]); + + return callback(blob); +} + +/** + * Encodes a packet with binary data in a base64 string + * + * @param {Object} packet, has `type` and `data` + * @return {String} base64 encoded message + */ + +exports.encodeBase64Packet = function(packet, callback) { + var message = 'b' + exports.packets[packet.type]; + if (Blob && packet.data instanceof Blob) { + var fr = new FileReader(); + fr.onload = function() { + var b64 = fr.result.split(',')[1]; + callback(message + b64); + }; + return fr.readAsDataURL(packet.data); + } + + var b64data; + try { + b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data)); + } catch (e) { + // iPhone Safari doesn't let you apply with typed arrays + var typed = new Uint8Array(packet.data); + var basic = new Array(typed.length); + for (var i = 0; i < typed.length; i++) { + basic[i] = typed[i]; + } + b64data = String.fromCharCode.apply(null, basic); + } + message += global.btoa(b64data); + return callback(message); +}; + +/** + * Decodes a packet. Changes format to Blob if requested. + * + * @return {Object} with `type` and `data` (if any) + * @api private + */ + +exports.decodePacket = function (data, binaryType, utf8decode) { + // String data + if (typeof data == 'string' || data === undefined) { + if (data.charAt(0) == 'b') { + return exports.decodeBase64Packet(data.substr(1), binaryType); + } + + if (utf8decode) { + try { + data = utf8.decode(data); + } catch (e) { + return err; + } + } + var type = data.charAt(0); + + if (Number(type) != type || !packetslist[type]) { + return err; + } + + if (data.length > 1) { + return { type: packetslist[type], data: data.substring(1) }; + } else { + return { type: packetslist[type] }; + } + } + + var asArray = new Uint8Array(data); + var type = asArray[0]; + var rest = sliceBuffer(data, 1); + if (Blob && binaryType === 'blob') { + rest = new Blob([rest]); + } + return { type: packetslist[type], data: rest }; +}; + +/** + * Decodes a packet encoded in a base64 string + * + * @param {String} base64 encoded message + * @return {Object} with `type` and `data` (if any) + */ + +exports.decodeBase64Packet = function(msg, binaryType) { + var type = packetslist[msg.charAt(0)]; + if (!global.ArrayBuffer) { + return { type: type, data: { base64: true, data: msg.substr(1) } }; + } + + var data = base64encoder.decode(msg.substr(1)); + + if (binaryType === 'blob' && Blob) { + data = new Blob([data]); + } + + return { type: type, data: data }; +}; + +/** + * Encodes multiple messages (payload). + * + * <length>:data + * + * Example: + * + * 11:hello world2:hi + * + * If any contents are binary, they will be encoded as base64 strings. Base64 + * encoded strings are marked with a b before the length specifier + * + * @param {Array} packets + * @api private + */ + +exports.encodePayload = function (packets, supportsBinary, callback) { + if (typeof supportsBinary == 'function') { + callback = supportsBinary; + supportsBinary = null; + } + + var isBinary = hasBinary(packets); + + if (supportsBinary && isBinary) { + if (Blob && !dontSendBlobs) { + return exports.encodePayloadAsBlob(packets, callback); + } + + return exports.encodePayloadAsArrayBuffer(packets, callback); + } + + if (!packets.length) { + return callback('0:'); + } + + function setLengthHeader(message) { + return message.length + ':' + message; + } + + function encodeOne(packet, doneCallback) { + exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) { + doneCallback(null, setLengthHeader(message)); + }); + } + + map(packets, encodeOne, function(err, results) { + return callback(results.join('')); + }); +}; + +/** + * Async array map using after + */ + +function map(ary, each, done) { + var result = new Array(ary.length); + var next = after(ary.length, done); + + var eachWithIndex = function(i, el, cb) { + each(el, function(error, msg) { + result[i] = msg; + cb(error, result); + }); + }; + + for (var i = 0; i < ary.length; i++) { + eachWithIndex(i, ary[i], next); + } +} + +/* + * Decodes data when a payload is maybe expected. Possible binary contents are + * decoded from their base64 representation + * + * @param {String} data, callback method + * @api public + */ + +exports.decodePayload = function (data, binaryType, callback) { + if (typeof data != 'string') { + return exports.decodePayloadAsBinary(data, binaryType, callback); + } + + if (typeof binaryType === 'function') { + callback = binaryType; + binaryType = null; + } + + var packet; + if (data == '') { + // parser error - ignoring payload + return callback(err, 0, 1); + } + + var length = '' + , n, msg; + + for (var i = 0, l = data.length; i < l; i++) { + var chr = data.charAt(i); + + if (':' != chr) { + length += chr; + } else { + if ('' == length || (length != (n = Number(length)))) { + // parser error - ignoring payload + return callback(err, 0, 1); + } + + msg = data.substr(i + 1, n); + + if (length != msg.length) { + // parser error - ignoring payload + return callback(err, 0, 1); + } + + if (msg.length) { + packet = exports.decodePacket(msg, binaryType, true); + + if (err.type == packet.type && err.data == packet.data) { + // parser error in individual packet - ignoring payload + return callback(err, 0, 1); + } + + var ret = callback(packet, i + n, l); + if (false === ret) return; + } + + // advance cursor + i += n; + length = ''; + } + } + + if (length != '') { + // parser error - ignoring payload + return callback(err, 0, 1); + } + +}; + +/** + * Encodes multiple messages (payload) as binary. + * + * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number + * 255><data> + * + * Example: + * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers + * + * @param {Array} packets + * @return {ArrayBuffer} encoded payload + * @api private + */ + +exports.encodePayloadAsArrayBuffer = function(packets, callback) { + if (!packets.length) { + return callback(new ArrayBuffer(0)); + } + + function encodeOne(packet, doneCallback) { + exports.encodePacket(packet, true, true, function(data) { + return doneCallback(null, data); + }); + } + + map(packets, encodeOne, function(err, encodedPackets) { + var totalLength = encodedPackets.reduce(function(acc, p) { + var len; + if (typeof p === 'string'){ + len = p.length; + } else { + len = p.byteLength; + } + return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2 + }, 0); + + var resultArray = new Uint8Array(totalLength); + + var bufferIndex = 0; + encodedPackets.forEach(function(p) { + var isString = typeof p === 'string'; + var ab = p; + if (isString) { + var view = new Uint8Array(p.length); + for (var i = 0; i < p.length; i++) { + view[i] = p.charCodeAt(i); + } + ab = view.buffer; + } + + if (isString) { // not true binary + resultArray[bufferIndex++] = 0; + } else { // true binary + resultArray[bufferIndex++] = 1; + } + + var lenStr = ab.byteLength.toString(); + for (var i = 0; i < lenStr.length; i++) { + resultArray[bufferIndex++] = parseInt(lenStr[i]); + } + resultArray[bufferIndex++] = 255; + + var view = new Uint8Array(ab); + for (var i = 0; i < view.length; i++) { + resultArray[bufferIndex++] = view[i]; + } + }); + + return callback(resultArray.buffer); + }); +}; + +/** + * Encode as Blob + */ + +exports.encodePayloadAsBlob = function(packets, callback) { + function encodeOne(packet, doneCallback) { + exports.encodePacket(packet, true, true, function(encoded) { + var binaryIdentifier = new Uint8Array(1); + binaryIdentifier[0] = 1; + if (typeof encoded === 'string') { + var view = new Uint8Array(encoded.length); + for (var i = 0; i < encoded.length; i++) { + view[i] = encoded.charCodeAt(i); + } + encoded = view.buffer; + binaryIdentifier[0] = 0; + } + + var len = (encoded instanceof ArrayBuffer) + ? encoded.byteLength + : encoded.size; + + var lenStr = len.toString(); + var lengthAry = new Uint8Array(lenStr.length + 1); + for (var i = 0; i < lenStr.length; i++) { + lengthAry[i] = parseInt(lenStr[i]); + } + lengthAry[lenStr.length] = 255; + + if (Blob) { + var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]); + doneCallback(null, blob); + } + }); + } + + map(packets, encodeOne, function(err, results) { + return callback(new Blob(results)); + }); +}; + +/* + * Decodes data when a payload is maybe expected. Strings are decoded by + * interpreting each byte as a key code for entries marked to start with 0. See + * description of encodePayloadAsBinary + * + * @param {ArrayBuffer} data, callback method + * @api public + */ + +exports.decodePayloadAsBinary = function (data, binaryType, callback) { + if (typeof binaryType === 'function') { + callback = binaryType; + binaryType = null; + } + + var bufferTail = data; + var buffers = []; + + var numberTooLong = false; + while (bufferTail.byteLength > 0) { + var tailArray = new Uint8Array(bufferTail); + var isString = tailArray[0] === 0; + var msgLength = ''; + + for (var i = 1; ; i++) { + if (tailArray[i] == 255) break; + + if (msgLength.length > 310) { + numberTooLong = true; + break; + } + + msgLength += tailArray[i]; + } + + if(numberTooLong) return callback(err, 0, 1); + + bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length); + msgLength = parseInt(msgLength); + + var msg = sliceBuffer(bufferTail, 0, msgLength); + if (isString) { + try { + msg = String.fromCharCode.apply(null, new Uint8Array(msg)); + } catch (e) { + // iPhone Safari doesn't let you apply to typed arrays + var typed = new Uint8Array(msg); + msg = ''; + for (var i = 0; i < typed.length; i++) { + msg += String.fromCharCode(typed[i]); + } + } + } + + buffers.push(msg); + bufferTail = sliceBuffer(bufferTail, msgLength); + } + + var total = buffers.length; + buffers.forEach(function(buffer, i) { + callback(exports.decodePacket(buffer, binaryType, true), i, total); + }); +}; + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./keys":18,"after":19,"arraybuffer.slice":20,"base64-arraybuffer":21,"blob":11,"has-binary":22,"utf8":24}],18:[function(_dereq_,module,exports){ + +/** + * Gets the keys for an object. + * + * @return {Array} keys + * @api private + */ + +module.exports = Object.keys || function keys (obj){ + var arr = []; + var has = Object.prototype.hasOwnProperty; + + for (var i in obj) { + if (has.call(obj, i)) { + arr.push(i); + } + } + return arr; +}; + +},{}],19:[function(_dereq_,module,exports){ +module.exports = after + +function after(count, callback, err_cb) { + var bail = false + err_cb = err_cb || noop + proxy.count = count + + return (count === 0) ? callback() : proxy + + function proxy(err, result) { + if (proxy.count <= 0) { + throw new Error('after called too many times') + } + --proxy.count + + // after first error, rest are passed to err_cb + if (err) { + bail = true + callback(err) + // future error callbacks will go to error handler + callback = err_cb + } else if (proxy.count === 0 && !bail) { + callback(null, result) + } + } +} + +function noop() {} + +},{}],20:[function(_dereq_,module,exports){ +/** + * An abstraction for slicing an arraybuffer even when + * ArrayBuffer.prototype.slice is not supported + * + * @api public + */ + +module.exports = function(arraybuffer, start, end) { + var bytes = arraybuffer.byteLength; + start = start || 0; + end = end || bytes; + + if (arraybuffer.slice) { return arraybuffer.slice(start, end); } + + if (start < 0) { start += bytes; } + if (end < 0) { end += bytes; } + if (end > bytes) { end = bytes; } + + if (start >= bytes || start >= end || bytes === 0) { + return new ArrayBuffer(0); + } + + var abv = new Uint8Array(arraybuffer); + var result = new Uint8Array(end - start); + for (var i = start, ii = 0; i < end; i++, ii++) { + result[ii] = abv[i]; + } + return result.buffer; +}; + +},{}],21:[function(_dereq_,module,exports){ +/* + * base64-arraybuffer + * https://github.com/niklasvh/base64-arraybuffer + * + * Copyright (c) 2012 Niklas von Hertzen + * Licensed under the MIT license. + */ +(function(chars){ + "use strict"; + + exports.encode = function(arraybuffer) { + var bytes = new Uint8Array(arraybuffer), + i, len = bytes.length, base64 = ""; + + for (i = 0; i < len; i+=3) { + base64 += chars[bytes[i] >> 2]; + base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)]; + base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)]; + base64 += chars[bytes[i + 2] & 63]; + } + + if ((len % 3) === 2) { + base64 = base64.substring(0, base64.length - 1) + "="; + } else if (len % 3 === 1) { + base64 = base64.substring(0, base64.length - 2) + "=="; + } + + return base64; + }; + + exports.decode = function(base64) { + var bufferLength = base64.length * 0.75, + len = base64.length, i, p = 0, + encoded1, encoded2, encoded3, encoded4; + + if (base64[base64.length - 1] === "=") { + bufferLength--; + if (base64[base64.length - 2] === "=") { + bufferLength--; + } + } + + var arraybuffer = new ArrayBuffer(bufferLength), + bytes = new Uint8Array(arraybuffer); + + for (i = 0; i < len; i+=4) { + encoded1 = chars.indexOf(base64[i]); + encoded2 = chars.indexOf(base64[i+1]); + encoded3 = chars.indexOf(base64[i+2]); + encoded4 = chars.indexOf(base64[i+3]); + + bytes[p++] = (encoded1 << 2) | (encoded2 >> 4); + bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2); + bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63); + } + + return arraybuffer; + }; +})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"); + +},{}],22:[function(_dereq_,module,exports){ +(function (global){ + +/* + * Module requirements. + */ + +var isArray = _dereq_('isarray'); + +/** + * Module exports. + */ + +module.exports = hasBinary; + +/** + * Checks for binary data. + * + * Right now only Buffer and ArrayBuffer are supported.. + * + * @param {Object} anything + * @api public + */ + +function hasBinary(data) { + + function _hasBinary(obj) { + if (!obj) return false; + + if ( (global.Buffer && global.Buffer.isBuffer(obj)) || + (global.ArrayBuffer && obj instanceof ArrayBuffer) || + (global.Blob && obj instanceof Blob) || + (global.File && obj instanceof File) + ) { + return true; + } + + if (isArray(obj)) { + for (var i = 0; i < obj.length; i++) { + if (_hasBinary(obj[i])) { + return true; + } + } + } else if (obj && 'object' == typeof obj) { + if (obj.toJSON) { + obj = obj.toJSON(); + } + + for (var key in obj) { + if (obj.hasOwnProperty(key) && _hasBinary(obj[key])) { + return true; + } + } + } + + return false; + } + + return _hasBinary(data); +} + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"isarray":23}],23:[function(_dereq_,module,exports){ +module.exports = Array.isArray || function (arr) { + return Object.prototype.toString.call(arr) == '[object Array]'; +}; + +},{}],24:[function(_dereq_,module,exports){ +(function (global){ +/*! http://mths.be/utf8js v2.0.0 by @mathias */ +;(function(root) { + + // Detect free variables `exports` + var freeExports = typeof exports == 'object' && exports; + + // Detect free variable `module` + var freeModule = typeof module == 'object' && module && + module.exports == freeExports && module; + + // Detect free variable `global`, from Node.js or Browserified code, + // and use it as `root` + var freeGlobal = typeof global == 'object' && global; + if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) { + root = freeGlobal; + } + + /*--------------------------------------------------------------------------*/ + + var stringFromCharCode = String.fromCharCode; + + // Taken from http://mths.be/punycode + function ucs2decode(string) { + var output = []; + var counter = 0; + var length = string.length; + var value; + var extra; + while (counter < length) { + value = string.charCodeAt(counter++); + if (value >= 0xD800 && value <= 0xDBFF && counter < length) { + // high surrogate, and there is a next character + extra = string.charCodeAt(counter++); + if ((extra & 0xFC00) == 0xDC00) { // low surrogate + output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000); + } else { + // unmatched surrogate; only append this code unit, in case the next + // code unit is the high surrogate of a surrogate pair + output.push(value); + counter--; + } + } else { + output.push(value); + } + } + return output; + } + + // Taken from http://mths.be/punycode + function ucs2encode(array) { + var length = array.length; + var index = -1; + var value; + var output = ''; + while (++index < length) { + value = array[index]; + if (value > 0xFFFF) { + value -= 0x10000; + output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800); + value = 0xDC00 | value & 0x3FF; + } + output += stringFromCharCode(value); + } + return output; + } + + /*--------------------------------------------------------------------------*/ + + function createByte(codePoint, shift) { + return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80); + } + + function encodeCodePoint(codePoint) { + if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence + return stringFromCharCode(codePoint); + } + var symbol = ''; + if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence + symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0); + } + else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence + symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0); + symbol += createByte(codePoint, 6); + } + else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence + symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0); + symbol += createByte(codePoint, 12); + symbol += createByte(codePoint, 6); + } + symbol += stringFromCharCode((codePoint & 0x3F) | 0x80); + return symbol; + } + + function utf8encode(string) { + var codePoints = ucs2decode(string); + + // console.log(JSON.stringify(codePoints.map(function(x) { + // return 'U+' + x.toString(16).toUpperCase(); + // }))); + + var length = codePoints.length; + var index = -1; + var codePoint; + var byteString = ''; + while (++index < length) { + codePoint = codePoints[index]; + byteString += encodeCodePoint(codePoint); + } + return byteString; + } + + /*--------------------------------------------------------------------------*/ + + function readContinuationByte() { + if (byteIndex >= byteCount) { + throw Error('Invalid byte index'); + } + + var continuationByte = byteArray[byteIndex] & 0xFF; + byteIndex++; + + if ((continuationByte & 0xC0) == 0x80) { + return continuationByte & 0x3F; + } + + // If we end up here, it’s not a continuation byte + throw Error('Invalid continuation byte'); + } + + function decodeSymbol() { + var byte1; + var byte2; + var byte3; + var byte4; + var codePoint; + + if (byteIndex > byteCount) { + throw Error('Invalid byte index'); + } + + if (byteIndex == byteCount) { + return false; + } + + // Read first byte + byte1 = byteArray[byteIndex] & 0xFF; + byteIndex++; + + // 1-byte sequence (no continuation bytes) + if ((byte1 & 0x80) == 0) { + return byte1; + } + + // 2-byte sequence + if ((byte1 & 0xE0) == 0xC0) { + var byte2 = readContinuationByte(); + codePoint = ((byte1 & 0x1F) << 6) | byte2; + if (codePoint >= 0x80) { + return codePoint; + } else { + throw Error('Invalid continuation byte'); + } + } + + // 3-byte sequence (may include unpaired surrogates) + if ((byte1 & 0xF0) == 0xE0) { + byte2 = readContinuationByte(); + byte3 = readContinuationByte(); + codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3; + if (codePoint >= 0x0800) { + return codePoint; + } else { + throw Error('Invalid continuation byte'); + } + } + + // 4-byte sequence + if ((byte1 & 0xF8) == 0xF0) { + byte2 = readContinuationByte(); + byte3 = readContinuationByte(); + byte4 = readContinuationByte(); + codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) | + (byte3 << 0x06) | byte4; + if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) { + return codePoint; + } + } + + throw Error('Invalid UTF-8 detected'); + } + + var byteArray; + var byteCount; + var byteIndex; + function utf8decode(byteString) { + byteArray = ucs2decode(byteString); + byteCount = byteArray.length; + byteIndex = 0; + var codePoints = []; + var tmp; + while ((tmp = decodeSymbol()) !== false) { + codePoints.push(tmp); + } + return ucs2encode(codePoints); + } + + /*--------------------------------------------------------------------------*/ + + var utf8 = { + 'version': '2.0.0', + 'encode': utf8encode, + 'decode': utf8decode + }; + + // Some AMD build optimizers, like r.js, check for specific condition patterns + // like the following: + if ( + typeof define == 'function' && + typeof define.amd == 'object' && + define.amd + ) { + define(function() { + return utf8; + }); + } else if (freeExports && !freeExports.nodeType) { + if (freeModule) { // in Node.js or RingoJS v0.8.0+ + freeModule.exports = utf8; + } else { // in Narwhal or RingoJS v0.7.0- + var object = {}; + var hasOwnProperty = object.hasOwnProperty; + for (var key in utf8) { + hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]); + } + } + } else { // in Rhino or a web browser + root.utf8 = utf8; + } + +}(this)); + +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],25:[function(_dereq_,module,exports){ + +/** + * Module dependencies. + */ + +var global = _dereq_('global'); + +/** + * Module exports. + * + * Logic borrowed from Modernizr: + * + * - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js + */ + +try { + module.exports = 'XMLHttpRequest' in global && + 'withCredentials' in new global.XMLHttpRequest(); +} catch (err) { + // if XMLHttp support is disabled in IE then it will throw + // when trying to create + module.exports = false; +} + +},{"global":26}],26:[function(_dereq_,module,exports){ + +/** + * Returns `this`. Execute this without a "context" (i.e. without it being + * attached to an object of the left-hand side), and `this` points to the + * "global" scope of the current JS execution. + */ + +module.exports = (function () { return this; })(); + +},{}],27:[function(_dereq_,module,exports){ + +var indexOf = [].indexOf; + +module.exports = function(arr, obj){ + if (indexOf) return arr.indexOf(obj); + for (var i = 0; i < arr.length; ++i) { + if (arr[i] === obj) return i; + } + return -1; +}; +},{}],28:[function(_dereq_,module,exports){ +(function (global){ +/** + * JSON parse. + * + * @see Based on jQuery#parseJSON (MIT) and JSON2 + * @api private + */ + +var rvalidchars = /^[\],:{}\s]*$/; +var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g; +var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g; +var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g; +var rtrimLeft = /^\s+/; +var rtrimRight = /\s+$/; + +module.exports = function parsejson(data) { + if ('string' != typeof data || !data) { + return null; + } + + data = data.replace(rtrimLeft, '').replace(rtrimRight, ''); + + // Attempt to parse using the native JSON parser first + if (global.JSON && JSON.parse) { + return JSON.parse(data); + } + + if (rvalidchars.test(data.replace(rvalidescape, '@') + .replace(rvalidtokens, ']') + .replace(rvalidbraces, ''))) { + return (new Function('return ' + data))(); + } +}; +}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{}],29:[function(_dereq_,module,exports){ +/** + * Compiles a querystring + * Returns string representation of the object + * + * @param {Object} + * @api private + */ + +exports.encode = function (obj) { + var str = ''; + + for (var i in obj) { + if (obj.hasOwnProperty(i)) { + if (str.length) str += '&'; + str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]); + } + } + + return str; +}; + +/** + * Parses a simple querystring into an object + * + * @param {String} qs + * @api private + */ + +exports.decode = function(qs){ + var qry = {}; + var pairs = qs.split('&'); + for (var i = 0, l = pairs.length; i < l; i++) { + var pair = pairs[i].split('='); + qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]); + } + return qry; +}; + +},{}],30:[function(_dereq_,module,exports){ +/** + * Parses an URI + * + * @author Steven Levithan <stevenlevithan.com> (MIT license) + * @api private + */ + +var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/; + +var parts = [ + 'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor' +]; + +module.exports = function parseuri(str) { + var src = str, + b = str.indexOf('['), + e = str.indexOf(']'); + + if (b != -1 && e != -1) { + str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length); + } + + var m = re.exec(str || ''), + uri = {}, + i = 14; + + while (i--) { + uri[parts[i]] = m[i] || ''; + } + + if (b != -1 && e != -1) { + uri.source = src; + uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':'); + uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':'); + uri.ipv6uri = true; + } + + return uri; +}; + +},{}],31:[function(_dereq_,module,exports){ + +/** + * Module dependencies. + */ + +var global = (function() { return this; })(); + +/** + * WebSocket constructor. + */ + +var WebSocket = global.WebSocket || global.MozWebSocket; + +/** + * Module exports. + */ + +module.exports = WebSocket ? ws : null; + +/** + * WebSocket constructor. + * + * The third `opts` options object gets ignored in web browsers, since it's + * non-standard, and throws a TypeError if passed to the constructor. + * See: https://github.com/einaros/ws/issues/227 + * + * @param {String} uri + * @param {Array} protocols (optional) + * @param {Object) opts (optional) + * @api public + */ + +function ws(uri, protocols, opts) { + var instance; + if (protocols) { + instance = new WebSocket(uri, protocols); + } else { + instance = new WebSocket(uri); + } + return instance; +} + +if (WebSocket) ws.prototype = WebSocket.prototype; + +},{}]},{},[1])(1) +}); diff --git a/js/prolog.js b/js/prolog.js index 90b1b69..7ea8ce3 100644 --- a/js/prolog.js +++ b/js/prolog.js @@ -84,7 +84,7 @@ return {}; }; - var makeActivityHandler = function (editor) { + var makeActivityHandler = function (editor, problem_id) { var lastActivityMillis = Date.now(), deltaActivityMillis = function deltaActivityMillisFunc () { var now = Date.now(), @@ -98,7 +98,7 @@ var promise; ts = null; if (queue.length === 0) return Q(true); - promise = codeq.comms.sendActivity(queue, editor.getDoc().getValue()); + promise = codeq.comms.sendActivity(queue, editor.getDoc().getValue(), problem_id); queue.length = 0; return promise; }, @@ -147,7 +147,7 @@ jqConsole = $('#console'), jqHints = $('#info'), editor = CodeMirror(jqEditor[0], { cursorHeight: 0.85, lineNumbers: true, matchBrackets: true }), - activityHandler = makeActivityHandler(editor), + activityHandler = makeActivityHandler(editor, problem.id), /* controller = jqConsole.console({ promptLabel: '?- ', commandValidate: function (line) { diff --git a/prolog.html b/prolog.html index c3e80b2..4d07eb7 100644 --- a/prolog.html +++ b/prolog.html @@ -81,6 +81,7 @@ <!-- jQuery stuff --> <script src="js/jquery/jquery-1.11.3.js"></script> + <script src="js/engine.io.js"></script> <script src="js/jquery/jquery.terminal-0.8.8.js"></script> <!--script src="js/jquery/jquery.console.js"></script> <!-- Q promise library --> |