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| (function(e){Iif("function"==typeof bootstrap)bootstrap("webrtc",e);else Eif("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeWebRTC=e}else"undefined"!=typeof window?window.WebRTC=e():global.WebRTC=e()})(function(){var define,ses,bootstrap,module,exports;
return (function(e,t,n){function i(n,s){Eif(!t[n]){Iif(!e[n]){var o=typeof require=="function"&&require;if(!s&&o)return o(n,!0);if(r)return r(n,!0);throw new Error("Cannot find module '"+n+"'")}var u=t[n]={exports:{}};e[n][0].call(u.exports,function(t){var r=e[n][1][t];return i(r?r:t)},u,u.exports)}return t[n].exports}var r=typeof require=="function"&&require;for(var s=0;s<n.length;s++)i(n[s]);return i})({1:[function(require,module,exports){
var util = require('util');
var webrtc = require('webrtcsupport');
var WildEmitter = require('wildemitter');
var mockconsole = require('mockconsole');
var localMedia = require('localmedia');
var Peer = require('./peer');
function WebRTC(opts) {
var self = this;
var options = opts || {};
var config = this.config = {
debug: false,
// makes the entire PC config overridable
peerConnectionConfig: {
iceServers: [{"url": "stun:stun.l.google.com:19302"}]
},
peerConnectionConstraints: {
optional: [
{DtlsSrtpKeyAgreement: true}
]
},
receiveMedia: {
mandatory: {
OfferToReceiveAudio: true,
OfferToReceiveVideo: true
}
},
enableDataChannels: true
};
var item;
// expose screensharing check
this.screenSharingSupport = webrtc.screenSharing;
// We also allow a 'logger' option. It can be any object that implements
// log, warn, and error methods.
// We log nothing by default, following "the rule of silence":
// http://www.linfo.org/rule_of_silence.html
this.logger = function () {
// we assume that if you're in debug mode and you didn't
// pass in a logger, you actually want to log as much as
// possible.
if (opts.debug) {
return opts.logger || console;
} else {
// or we'll use your logger which should have its own logic
// for output. Or we'll return the no-op.
return opts.logger || mockconsole;
}
}();
// set options
for (item in options) {
this.config[item] = options[item];
}
// check for support
if (!webrtc.support) {
this.logger.error('Your browser doesn\'t seem to support WebRTC');
}
// where we'll store our peer connections
this.peers = [];
// call localMedia constructor
localMedia.call(this, this.config);
this.on('speaking', function () {
if (!self.hardMuted) {
// FIXME: should use sendDirectlyToAll, but currently has different semantics wrt payload
self.peers.forEach(function (peer) {
if (peer.enableDataChannels) {
var dc = peer.getDataChannel('hark');
if (dc.readyState != 'open') return;
dc.send(JSON.stringify({type: 'speaking'}));
}
});
}
});
this.on('stoppedSpeaking', function () {
if (!self.hardMuted) {
// FIXME: should use sendDirectlyToAll, but currently has different semantics wrt payload
self.peers.forEach(function (peer) {
if (peer.enableDataChannels) {
var dc = peer.getDataChannel('hark');
if (dc.readyState != 'open') return;
dc.send(JSON.stringify({type: 'stoppedSpeaking'}));
}
});
}
});
this.on('volumeChange', function (volume, treshold) {
if (!self.hardMuted) {
// FIXME: should use sendDirectlyToAll, but currently has different semantics wrt payload
self.peers.forEach(function (peer) {
if (peer.enableDataChannels) {
var dc = peer.getDataChannel('hark');
if (dc.readyState != 'open') return;
dc.send(JSON.stringify({type: 'volume', volume: volume }));
}
});
}
});
// log events in debug mode
if (this.config.debug) {
this.on('*', function (event, val1, val2) {
var logger;
// if you didn't pass in a logger and you explicitly turning on debug
// we're just going to assume you're wanting log output with console
if (self.config.logger === mockconsole) {
logger = console;
} else {
logger = self.logger;
}
logger.log('event:', event, val1, val2);
});
}
}
util.inherits(WebRTC, localMedia);
WebRTC.prototype.createPeer = function (opts) {
var peer;
opts.parent = this;
peer = new Peer(opts);
this.peers.push(peer);
return peer;
};
// removes peers
WebRTC.prototype.removePeers = function (id, type) {
this.getPeers(id, type).forEach(function (peer) {
peer.end();
});
};
// fetches all Peer objects by session id and/or type
WebRTC.prototype.getPeers = function (sessionId, type) {
return this.peers.filter(function (peer) {
return (!sessionId || peer.id === sessionId) && (!type || peer.type === type);
});
};
// sends message to all
WebRTC.prototype.sendToAll = function (message, payload) {
this.peers.forEach(function (peer) {
peer.send(message, payload);
});
};
// sends message to all using a datachannel
// only sends to anyone who has an open datachannel
WebRTC.prototype.sendDirectlyToAll = function (channel, message, payload) {
this.peers.forEach(function (peer) {
if (peer.enableDataChannels) {
peer.sendDirectly(channel, message, payload);
}
});
};
module.exports = WebRTC;
},{"./peer":3,"localmedia":7,"mockconsole":6,"util":2,"webrtcsupport":5,"wildemitter":4}],2:[function(require,module,exports){
var events = require('events');
exports.isArray = isArray;
exports.isDate = function(obj){return Object.prototype.toString.call(obj) === '[object Date]'};
exports.isRegExp = function(obj){return Object.prototype.toString.call(obj) === '[object RegExp]'};
exports.print = function () {};
exports.puts = function () {};
exports.debug = function() {};
exports.inspect = function(obj, showHidden, depth, colors) {
var seen = [];
var stylize = function(str, styleType) {
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
var styles =
{ 'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39] };
var style =
{ 'special': 'cyan',
'number': 'blue',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red' }[styleType];
if (style) {
return '\u001b[' + styles[style][0] + 'm' + str +
'\u001b[' + styles[style][1] + 'm';
} else {
return str;
}
};
if (! colors) {
stylize = function(str, styleType) { return str; };
}
function format(value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (value && typeof value.inspect === 'function' &&
// Filter out the util module, it's inspect function is special
value !== exports &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
return value.inspect(recurseTimes);
}
// Primitive types cannot have properties
switch (typeof value) {
case 'undefined':
return stylize('undefined', 'undefined');
case 'string':
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return stylize(simple, 'string');
case 'number':
return stylize('' + value, 'number');
case 'boolean':
return stylize('' + value, 'boolean');
}
// For some reason typeof null is "object", so special case here.
if (value === null) {
return stylize('null', 'null');
}
// Look up the keys of the object.
var visible_keys = Object_keys(value);
var keys = showHidden ? Object_getOwnPropertyNames(value) : visible_keys;
// Functions without properties can be shortcutted.
if (typeof value === 'function' && keys.length === 0) {
if (isRegExp(value)) {
return stylize('' + value, 'regexp');
} else {
var name = value.name ? ': ' + value.name : '';
return stylize('[Function' + name + ']', 'special');
}
}
// Dates without properties can be shortcutted
if (isDate(value) && keys.length === 0) {
return stylize(value.toUTCString(), 'date');
}
var base, type, braces;
// Determine the object type
if (isArray(value)) {
type = 'Array';
braces = ['[', ']'];
} else {
type = 'Object';
braces = ['{', '}'];
}
// Make functions say that they are functions
if (typeof value === 'function') {
var n = value.name ? ': ' + value.name : '';
base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']';
} else {
base = '';
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + value.toUTCString();
}
if (keys.length === 0) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return stylize('' + value, 'regexp');
} else {
return stylize('[Object]', 'special');
}
}
seen.push(value);
var output = keys.map(function(key) {
var name, str;
if (value.__lookupGetter__) {
if (value.__lookupGetter__(key)) {
if (value.__lookupSetter__(key)) {
str = stylize('[Getter/Setter]', 'special');
} else {
str = stylize('[Getter]', 'special');
}
} else {
if (value.__lookupSetter__(key)) {
str = stylize('[Setter]', 'special');
}
}
}
if (visible_keys.indexOf(key) < 0) {
name = '[' + key + ']';
}
if (!str) {
if (seen.indexOf(value[key]) < 0) {
if (recurseTimes === null) {
str = format(value[key]);
} else {
str = format(value[key], recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (isArray(value)) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = stylize('[Circular]', 'special');
}
}
if (typeof name === 'undefined') {
if (type === 'Array' && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = stylize(name, 'string');
}
}
return name + ': ' + str;
});
seen.pop();
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.length + 1;
}, 0);
if (length > 50) {
output = braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
} else {
output = braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
return output;
}
return format(obj, (typeof depth === 'undefined' ? 2 : depth));
};
function isArray(ar) {
return Array.isArray(ar) ||
(typeof ar === 'object' && Object.prototype.toString.call(ar) === '[object Array]');
}
function isRegExp(re) {
typeof re === 'object' && Object.prototype.toString.call(re) === '[object RegExp]';
}
function isDate(d) {
return typeof d === 'object' && Object.prototype.toString.call(d) === '[object Date]';
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
exports.log = function (msg) {};
exports.pump = null;
var Object_keys = Object.keys || function (obj) {
var res = [];
for (var key in obj) res.push(key);
return res;
};
var Object_getOwnPropertyNames = Object.getOwnPropertyNames || function (obj) {
var res = [];
for (var key in obj) {
if (Object.hasOwnProperty.call(obj, key)) res.push(key);
}
return res;
};
var Object_create = Object.create || function (prototype, properties) {
// from es5-shim
var object;
if (prototype === null) {
object = { '__proto__' : null };
}
else {
if (typeof prototype !== 'object') {
throw new TypeError(
'typeof prototype[' + (typeof prototype) + '] != \'object\''
);
}
var Type = function () {};
Type.prototype = prototype;
object = new Type();
object.__proto__ = prototype;
}
if (typeof properties !== 'undefined' && Object.defineProperties) {
Object.defineProperties(object, properties);
}
return object;
};
exports.inherits = function(ctor, superCtor) {
ctor.super_ = superCtor;
ctor.prototype = Object_create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (typeof f !== 'string') {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(exports.inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j': return JSON.stringify(args[i++]);
default:
return x;
}
});
for(var x = args[i]; i < len; x = args[++i]){
if (x === null || typeof x !== 'object') {
str += ' ' + x;
} else {
str += ' ' + exports.inspect(x);
}
}
return str;
};
},{"events":8}],4:[function(require,module,exports){
/*
WildEmitter.js is a slim little event emitter by @henrikjoreteg largely based
on @visionmedia's Emitter from UI Kit.
Why? I wanted it standalone.
I also wanted support for wildcard emitters like this:
emitter.on('*', function (eventName, other, event, payloads) {
});
emitter.on('somenamespace*', function (eventName, payloads) {
});
Please note that callbacks triggered by wildcard registered events also get
the event name as the first argument.
*/
module.exports = WildEmitter;
function WildEmitter() {
this.callbacks = {};
}
// Listen on the given `event` with `fn`. Store a group name if present.
WildEmitter.prototype.on = function (event, groupName, fn) {
var hasGroup = (arguments.length === 3),
group = hasGroup ? arguments[1] : undefined,
func = hasGroup ? arguments[2] : arguments[1];
func._groupName = group;
(this.callbacks[event] = this.callbacks[event] || []).push(func);
return this;
};
// Adds an `event` listener that will be invoked a single
// time then automatically removed.
WildEmitter.prototype.once = function (event, groupName, fn) {
var self = this,
hasGroup = (arguments.length === 3),
group = hasGroup ? arguments[1] : undefined,
func = hasGroup ? arguments[2] : arguments[1];
function on() {
self.off(event, on);
func.apply(this, arguments);
}
this.on(event, group, on);
return this;
};
// Unbinds an entire group
WildEmitter.prototype.releaseGroup = function (groupName) {
var item, i, len, handlers;
for (item in this.callbacks) {
handlers = this.callbacks[item];
for (i = 0, len = handlers.length; i < len; i++) {
if (handlers[i]._groupName === groupName) {
//console.log('removing');
// remove it and shorten the array we're looping through
handlers.splice(i, 1);
i--;
len--;
}
}
}
return this;
};
// Remove the given callback for `event` or all
// registered callbacks.
WildEmitter.prototype.off = function (event, fn) {
var callbacks = this.callbacks[event],
i;
if (!callbacks) return this;
// remove all handlers
if (arguments.length === 1) {
delete this.callbacks[event];
return this;
}
// remove specific handler
i = callbacks.indexOf(fn);
callbacks.splice(i, 1);
return this;
};
/// Emit `event` with the given args.
// also calls any `*` handlers
WildEmitter.prototype.emit = function (event) {
var args = [].slice.call(arguments, 1),
callbacks = this.callbacks[event],
specialCallbacks = this.getWildcardCallbacks(event),
i,
len,
item,
listeners;
if (callbacks) {
listeners = callbacks.slice();
for (i = 0, len = listeners.length; i < len; ++i) {
if (listeners[i]) {
listeners[i].apply(this, args);
} else {
break;
}
}
}
if (specialCallbacks) {
len = specialCallbacks.length;
listeners = specialCallbacks.slice();
for (i = 0, len = listeners.length; i < len; ++i) {
if (listeners[i]) {
listeners[i].apply(this, [event].concat(args));
} else {
break;
}
}
}
return this;
};
// Helper for for finding special wildcard event handlers that match the event
WildEmitter.prototype.getWildcardCallbacks = function (eventName) {
var item,
split,
result = [];
for (item in this.callbacks) {
split = item.split('*');
if (item === '*' || (split.length === 2 && eventName.slice(0, split[0].length) === split[0])) {
result = result.concat(this.callbacks[item]);
}
}
return result;
};
},{}],5:[function(require,module,exports){
// created by @HenrikJoreteg
var prefix;
if (window.mozRTCPeerConnection || navigator.mozGetUserMedia) {
prefix = 'moz';
} else if (window.webkitRTCPeerConnection || navigator.webkitGetUserMedia) {
prefix = 'webkit';
}
var PC = window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var IceCandidate = window.mozRTCIceCandidate || window.RTCIceCandidate;
var SessionDescription = window.mozRTCSessionDescription || window.RTCSessionDescription;
var MediaStream = window.webkitMediaStream || window.MediaStream;
var screenSharing = window.location.protocol === 'https:' &&
((window.navigator.userAgent.match('Chrome') && parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10) >= 26) ||
(window.navigator.userAgent.match('Firefox') && parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10) >= 33));
var AudioContext = window.AudioContext || window.webkitAudioContext;
var supportVp8 = document.createElement('video').canPlayType('video/webm; codecs="vp8", vorbis') === "probably";
var getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.msGetUserMedia || navigator.mozGetUserMedia;
// export support flags and constructors.prototype && PC
module.exports = {
prefix: prefix,
support: !!PC && supportVp8 && !!getUserMedia,
// new support style
supportRTCPeerConnection: !!PC,
supportVp8: supportVp8,
supportGetUserMedia: !!getUserMedia,
supportDataChannel: !!(PC && PC.prototype && PC.prototype.createDataChannel),
supportWebAudio: !!(AudioContext && AudioContext.prototype.createMediaStreamSource),
supportMediaStream: !!(MediaStream && MediaStream.prototype.removeTrack),
supportScreenSharing: !!screenSharing,
// old deprecated style. Dont use this anymore
dataChannel: !!(PC && PC.prototype && PC.prototype.createDataChannel),
webAudio: !!(AudioContext && AudioContext.prototype.createMediaStreamSource),
mediaStream: !!(MediaStream && MediaStream.prototype.removeTrack),
screenSharing: !!screenSharing,
// constructors
AudioContext: AudioContext,
PeerConnection: PC,
SessionDescription: SessionDescription,
IceCandidate: IceCandidate,
MediaStream: MediaStream,
getUserMedia: getUserMedia
};
},{}],6:[function(require,module,exports){
var methods = "assert,count,debug,dir,dirxml,error,exception,group,groupCollapsed,groupEnd,info,log,markTimeline,profile,profileEnd,time,timeEnd,trace,warn".split(",");
var l = methods.length;
var fn = function () {};
var mockconsole = {};
while (l--) {
mockconsole[methods[l]] = fn;
}
module.exports = mockconsole;
},{}],9:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
Iif (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
Iif (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],8:[function(require,module,exports){
var process=require("__browserify_process");Eif (!process.EventEmitter) process.EventEmitter = function () {};
var EventEmitter = exports.EventEmitter = process.EventEmitter;
var isArray = typeof Array.isArray === 'function'
? Array.isArray
: function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]'
}
;
function indexOf (xs, x) {
if (xs.indexOf) return xs.indexOf(x);
for (var i = 0; i < xs.length; i++) {
if (x === xs[i]) return i;
}
return -1;
}
// By default EventEmitters will print a warning if more than
// 10 listeners are added to it. This is a useful default which
// helps finding memory leaks.
//
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
var defaultMaxListeners = 10;
EventEmitter.prototype.setMaxListeners = function(n) {
if (!this._events) this._events = {};
this._events.maxListeners = n;
};
EventEmitter.prototype.emit = function(type) {
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events || !this._events.error ||
(isArray(this._events.error) && !this._events.error.length))
{
if (arguments[1] instanceof Error) {
throw arguments[1]; // Unhandled 'error' event
} else {
throw new Error("Uncaught, unspecified 'error' event.");
}
return false;
}
}
if (!this._events) return false;
var handler = this._events[type];
if (!handler) return false;
if (typeof handler == 'function') {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
var args = Array.prototype.slice.call(arguments, 1);
handler.apply(this, args);
}
return true;
} else if (isArray(handler)) {
var args = Array.prototype.slice.call(arguments, 1);
var listeners = handler.slice();
for (var i = 0, l = listeners.length; i < l; i++) {
listeners[i].apply(this, args);
}
return true;
} else {
return false;
}
};
// EventEmitter is defined in src/node_events.cc
// EventEmitter.prototype.emit() is also defined there.
EventEmitter.prototype.addListener = function(type, listener) {
if ('function' !== typeof listener) {
throw new Error('addListener only takes instances of Function');
}
if (!this._events) this._events = {};
// To avoid recursion in the case that type == "newListeners"! Before
// adding it to the listeners, first emit "newListeners".
this.emit('newListener', type, listener);
if (!this._events[type]) {
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
} else if (isArray(this._events[type])) {
// Check for listener leak
if (!this._events[type].warned) {
var m;
if (this._events.maxListeners !== undefined) {
m = this._events.maxListeners;
} else {
m = defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
console.trace();
}
}
// If we've already got an array, just append.
this._events[type].push(listener);
} else {
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
var self = this;
self.on(type, function g() {
self.removeListener(type, g);
listener.apply(this, arguments);
});
return this;
};
EventEmitter.prototype.removeListener = function(type, listener) {
if ('function' !== typeof listener) {
throw new Error('removeListener only takes instances of Function');
}
// does not use listeners(), so no side effect of creating _events[type]
if (!this._events || !this._events[type]) return this;
var list = this._events[type];
if (isArray(list)) {
var i = indexOf(list, listener);
if (i < 0) return this;
list.splice(i, 1);
if (list.length == 0)
delete this._events[type];
} else if (this._events[type] === listener) {
delete this._events[type];
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
if (arguments.length === 0) {
this._events = {};
return this;
}
// does not use listeners(), so no side effect of creating _events[type]
if (type && this._events && this._events[type]) this._events[type] = null;
return this;
};
EventEmitter.prototype.listeners = function(type) {
if (!this._events) this._events = {};
if (!this._events[type]) this._events[type] = [];
if (!isArray(this._events[type])) {
this._events[type] = [this._events[type]];
}
return this._events[type];
};
EventEmitter.listenerCount = function(emitter, type) {
var ret;
if (!emitter._events || !emitter._events[type])
ret = 0;
else if (typeof emitter._events[type] === 'function')
ret = 1;
else
ret = emitter._events[type].length;
return ret;
};
},{"__browserify_process":9}],3:[function(require,module,exports){
var util = require('util');
var webrtc = require('webrtcsupport');
var PeerConnection = require('rtcpeerconnection');
var WildEmitter = require('wildemitter');
var FileTransfer = require('filetransfer');
// the inband-v1 protocol is sending metadata inband in a serialized JSON object
// followed by the actual data. Receiver closes the datachannel upon completion
var INBAND_FILETRANSFER_V1 = 'https://simplewebrtc.com/protocol/filetransfer#inband-v1';
function Peer(options) {
var self = this;
this.id = options.id;
this.parent = options.parent;
this.type = options.type || 'video';
this.oneway = options.oneway || false;
this.sharemyscreen = options.sharemyscreen || false;
this.browserPrefix = options.prefix;
this.stream = options.stream;
this.enableDataChannels = options.enableDataChannels === undefined ? this.parent.config.enableDataChannels : options.enableDataChannels;
this.receiveMedia = options.receiveMedia || this.parent.config.receiveMedia;
this.channels = {};
this.sid = options.sid || Date.now().toString();
// Create an RTCPeerConnection via the polyfill
this.pc = new PeerConnection(this.parent.config.peerConnectionConfig, this.parent.config.peerConnectionConstraints);
this.pc.on('ice', this.onIceCandidate.bind(this));
this.pc.on('offer', function (offer) {
self.send('offer', offer);
});
this.pc.on('answer', function (offer) {
self.send('answer', offer);
});
this.pc.on('addStream', this.handleRemoteStreamAdded.bind(this));
this.pc.on('addChannel', this.handleDataChannelAdded.bind(this));
this.pc.on('removeStream', this.handleStreamRemoved.bind(this));
// Just fire negotiation needed events for now
// When browser re-negotiation handling seems to work
// we can use this as the trigger for starting the offer/answer process
// automatically. We'll just leave it be for now while this stabalizes.
this.pc.on('negotiationNeeded', this.emit.bind(this, 'negotiationNeeded'));
this.pc.on('iceConnectionStateChange', this.emit.bind(this, 'iceConnectionStateChange'));
this.pc.on('iceConnectionStateChange', function () {
switch (self.pc.iceConnectionState) {
case 'failed':
// currently, in chrome only the initiator goes to failed
// so we need to signal this to the peer
if (self.pc.pc.peerconnection.localDescription.type === 'offer') {
self.parent.emit('iceFailed', self);
self.send('connectivityError');
}
break;
}
});
this.pc.on('signalingStateChange', this.emit.bind(this, 'signalingStateChange'));
this.logger = this.parent.logger;
// handle screensharing/broadcast mode
if (options.type === 'screen') {
if (this.parent.localScreen && this.sharemyscreen) {
this.logger.log('adding local screen stream to peer connection');
this.pc.addStream(this.parent.localScreen);
this.broadcaster = options.broadcaster;
}
} else {
this.parent.localStreams.forEach(function (stream) {
self.pc.addStream(stream);
});
}
// call emitter constructor
WildEmitter.call(this);
this.on('channelOpen', function (channel) {
if (channel.protocol === INBAND_FILETRANSFER_V1) {
channel.onmessage = function (event) {
var metadata = JSON.parse(event.data);
var receiver = new FileTransfer.Receiver();
receiver.receive(metadata, channel);
self.emit('fileTransfer', metadata, receiver);
receiver.on('receivedFile', function (file, metadata) {
receiver.channel.close();
});
};
}
});
// proxy events to parent
this.on('*', function () {
self.parent.emit.apply(self.parent, arguments);
});
}
util.inherits(Peer, WildEmitter);
Peer.prototype.handleMessage = function (message) {
var self = this;
this.logger.log('getting', message.type, message);
if (message.prefix) this.browserPrefix = message.prefix;
if (message.type === 'offer') {
// workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1064247
message.payload.sdp = message.payload.sdp.replace('a=fmtp:0 profile-level-id=0x42e00c;packetization-mode=1\r\n', '');
this.pc.handleOffer(message.payload, function (err) {
if (err) {
return;
}
// auto-accept
self.pc.answer(self.receiveMedia, function (err, sessionDescription) {
//self.send('answer', sessionDescription);
});
});
} else if (message.type === 'answer') {
this.pc.handleAnswer(message.payload);
} else if (message.type === 'candidate') {
this.pc.processIce(message.payload);
} else if (message.type === 'connectivityError') {
this.parent.emit('connectivityError', self);
} else if (message.type === 'mute') {
this.parent.emit('mute', {id: message.from, name: message.payload.name});
} else if (message.type === 'unmute') {
this.parent.emit('unmute', {id: message.from, name: message.payload.name});
}
};
// send via signalling channel
Peer.prototype.send = function (messageType, payload) {
var message = {
to: this.id,
sid: this.sid,
broadcaster: this.broadcaster,
roomType: this.type,
type: messageType,
payload: payload,
prefix: webrtc.prefix
};
this.logger.log('sending', messageType, message);
this.parent.emit('message', message);
};
// send via data channel
// returns true when message was sent and false if channel is not open
Peer.prototype.sendDirectly = function (channel, messageType, payload) {
var message = {
type: messageType,
payload: payload
};
this.logger.log('sending via datachannel', channel, messageType, message);
var dc = this.getDataChannel(channel);
if (dc.readyState != 'open') return false;
dc.send(JSON.stringify(message));
return true;
};
// Internal method registering handlers for a data channel and emitting events on the peer
Peer.prototype._observeDataChannel = function (channel) {
var self = this;
channel.onclose = this.emit.bind(this, 'channelClose', channel);
channel.onerror = this.emit.bind(this, 'channelError', channel);
channel.onmessage = function (event) {
self.emit('channelMessage', self, channel.label, JSON.parse(event.data), channel, event);
};
channel.onopen = this.emit.bind(this, 'channelOpen', channel);
};
// Fetch or create a data channel by the given name
Peer.prototype.getDataChannel = function (name, opts) {
if (!webrtc.supportDataChannel) return this.emit('error', new Error('createDataChannel not supported'));
var channel = this.channels[name];
opts || (opts = {});
if (channel) return channel;
// if we don't have one by this label, create it
channel = this.channels[name] = this.pc.createDataChannel(name, opts);
this._observeDataChannel(channel);
return channel;
};
Peer.prototype.onIceCandidate = function (candidate) {
if (this.closed) return;
if (candidate) {
this.send('candidate', candidate);
} else {
this.logger.log("End of candidates.");
}
};
Peer.prototype.start = function () {
var self = this;
// well, the webrtc api requires that we either
// a) create a datachannel a priori
// b) do a renegotiation later to add the SCTP m-line
// Let's do (a) first...
if (this.enableDataChannels) {
this.getDataChannel('simplewebrtc');
}
this.pc.offer(this.receiveMedia, function (err, sessionDescription) {
//self.send('offer', sessionDescription);
});
};
Peer.prototype.icerestart = function () {
var constraints = this.receiveMedia;
constraints.mandatory.IceRestart = true;
this.pc.offer(constraints, function (err, success) { });
};
Peer.prototype.end = function () {
if (this.closed) return;
this.pc.close();
this.handleStreamRemoved();
};
Peer.prototype.handleRemoteStreamAdded = function (event) {
var self = this;
if (this.stream) {
this.logger.warn('Already have a remote stream');
} else {
this.stream = event.stream;
// FIXME: addEventListener('ended', ...) would be nicer
// but does not work in firefox
this.stream.onended = function () {
self.end();
};
this.parent.emit('peerStreamAdded', this);
}
};
Peer.prototype.handleStreamRemoved = function () {
this.parent.peers.splice(this.parent.peers.indexOf(this), 1);
this.closed = true;
this.parent.emit('peerStreamRemoved', this);
};
Peer.prototype.handleDataChannelAdded = function (channel) {
this.channels[channel.label] = channel;
this._observeDataChannel(channel);
};
Peer.prototype.sendFile = function (file) {
var sender = new FileTransfer.Sender();
var dc = this.getDataChannel('filetransfer' + (new Date()).getTime(), {
protocol: INBAND_FILETRANSFER_V1
});
// override onopen
dc.onopen = function () {
dc.send(JSON.stringify({
size: file.size,
name: file.name
}));
sender.send(file, dc);
};
// override onclose
dc.onclose = function () {
console.log('sender received transfer');
sender.emit('complete');
};
return sender;
};
module.exports = Peer;
},{"filetransfer":11,"rtcpeerconnection":10,"util":2,"webrtcsupport":5,"wildemitter":4}],12:[function(require,module,exports){
// getUserMedia helper by @HenrikJoreteg
var func = (window.navigator.getUserMedia ||
window.navigator.webkitGetUserMedia ||
window.navigator.mozGetUserMedia ||
window.navigator.msGetUserMedia);
module.exports = function (constraints, cb) {
var options, error;
var haveOpts = arguments.length === 2;
var defaultOpts = {video: true, audio: true};
var denied = 'PermissionDeniedError';
var notSatisfied = 'ConstraintNotSatisfiedError';
// make constraints optional
if (!haveOpts) {
cb = constraints;
constraints = defaultOpts;
}
// treat lack of browser support like an error
if (!func) {
// throw proper error per spec
error = new Error('MediaStreamError');
error.name = 'NotSupportedError';
// keep all callbacks async
return window.setTimeout(function () {
cb(error);
}, 0);
}
// make requesting media from non-http sources trigger an error
// current browsers silently drop the request instead
var protocol = window.location.protocol;
if (protocol !== 'http:' && protocol !== 'https:') {
error = new Error('MediaStreamError');
error.name = 'NotSupportedError';
// keep all callbacks async
return window.setTimeout(function () {
cb(error);
}, 0);
}
// normalize error handling when no media types are requested
if (!constraints.audio && !constraints.video) {
error = new Error('MediaStreamError');
error.name = 'NoMediaRequestedError';
// keep all callbacks async
return window.setTimeout(function () {
cb(error);
}, 0);
}
if (localStorage && localStorage.useFirefoxFakeDevice === "true") {
constraints.fake = true;
}
func.call(window.navigator, constraints, function (stream) {
cb(null, stream);
}, function (err) {
var error;
// coerce into an error object since FF gives us a string
// there are only two valid names according to the spec
// we coerce all non-denied to "constraint not satisfied".
if (typeof err === 'string') {
error = new Error('MediaStreamError');
if (err === denied) {
error.name = denied;
} else {
error.name = notSatisfied;
}
} else {
// if we get an error object make sure '.name' property is set
// according to spec: http://dev.w3.org/2011/webrtc/editor/getusermedia.html#navigatorusermediaerror-and-navigatorusermediaerrorcallback
error = err;
if (!error.name) {
// this is likely chrome which
// sets a property called "ERROR_DENIED" on the error object
// if so we make sure to set a name
if (error[denied]) {
err.name = denied;
} else {
err.name = notSatisfied;
}
}
}
cb(error);
});
};
},{}],7:[function(require,module,exports){
var util = require('util');
var hark = require('hark');
var webrtc = require('webrtcsupport');
var getUserMedia = require('getusermedia');
var getScreenMedia = require('getscreenmedia');
var WildEmitter = require('wildemitter');
var GainController = require('mediastream-gain');
var mockconsole = require('mockconsole');
function LocalMedia(opts) {
WildEmitter.call(this);
var config = this.config = {
autoAdjustMic: false,
detectSpeakingEvents: true,
media: {
audio: true,
video: true
},
logger: mockconsole
};
var item;
for (item in opts) {
this.config[item] = opts[item];
}
this.logger = config.logger;
this._log = this.logger.log.bind(this.logger, 'LocalMedia:');
this._logerror = this.logger.error.bind(this.logger, 'LocalMedia:');
this.screenSharingSupport = webrtc.screenSharing;
this.localStreams = [];
this.localScreens = [];
if (!webrtc.support) {
this._logerror('Your browser does not support local media capture.');
}
}
util.inherits(LocalMedia, WildEmitter);
LocalMedia.prototype.start = function (mediaConstraints, cb) {
var self = this;
var constraints = mediaConstraints || this.config.media;
getUserMedia(constraints, function (err, stream) {
if (!err) {
if (constraints.audio && self.config.detectSpeakingEvents) {
self.setupAudioMonitor(stream, self.config.harkOptions);
}
self.localStreams.push(stream);
if (self.config.autoAdjustMic) {
self.gainController = new GainController(stream);
// start out somewhat muted if we can track audio
self.setMicIfEnabled(0.5);
}
// TODO: might need to migrate to the video tracks onended
// FIXME: firefox does not seem to trigger this...
stream.onended = function () {
/*
var idx = self.localStreams.indexOf(stream);
if (idx > -1) {
self.localScreens.splice(idx, 1);
}
self.emit('localStreamStopped', stream);
*/
};
self.emit('localStream', stream);
}
if (cb) {
return cb(err, stream);
}
});
};
LocalMedia.prototype.stop = function (stream) {
var self = this;
// FIXME: duplicates cleanup code until fixed in FF
if (stream) {
stream.stop();
self.emit('localStreamStopped', stream);
var idx = self.localStreams.indexOf(stream);
if (idx > -1) {
self.localStreams = self.localStreams.splice(idx, 1);
}
} else {
if (this.audioMonitor) {
this.audioMonitor.stop();
delete this.audioMonitor;
}
this.localStreams.forEach(function (stream) {
stream.stop();
self.emit('localStreamStopped', stream);
});
this.localStreams = [];
}
};
LocalMedia.prototype.startScreenShare = function (cb) {
var self = this;
getScreenMedia(function (err, stream) {
if (!err) {
self.localScreens.push(stream);
// TODO: might need to migrate to the video tracks onended
// Firefox does not support .onended but it does not support
// screensharing either
stream.onended = function () {
var idx = self.localScreens.indexOf(stream);
if (idx > -1) {
self.localScreens.splice(idx, 1);
}
self.emit('localScreenStopped', stream);
};
self.emit('localScreen', stream);
}
// enable the callback
if (cb) {
return cb(err, stream);
}
});
};
LocalMedia.prototype.stopScreenShare = function (stream) {
if (stream) {
stream.stop();
} else {
this.localScreens.forEach(function (stream) {
stream.stop();
});
this.localScreens = [];
}
};
// Audio controls
LocalMedia.prototype.mute = function () {
this._audioEnabled(false);
this.hardMuted = true;
this.emit('audioOff');
};
LocalMedia.prototype.unmute = function () {
this._audioEnabled(true);
this.hardMuted = false;
this.emit('audioOn');
};
LocalMedia.prototype.setupAudioMonitor = function (stream, harkOptions) {
this._log('Setup audio');
var audio = this.audioMonitor = hark(stream, harkOptions);
var self = this;
var timeout;
audio.on('speaking', function () {
self.emit('speaking');
if (self.hardMuted) {
return;
}
self.setMicIfEnabled(1);
});
audio.on('stopped_speaking', function () {
if (timeout) {
clearTimeout(timeout);
}
timeout = setTimeout(function () {
self.emit('stoppedSpeaking');
if (self.hardMuted) {
return;
}
self.setMicIfEnabled(0.5);
}, 1000);
});
audio.on('volume_change', function (volume, treshold) {
self.emit('volumeChange', volume, treshold);
});
};
// We do this as a seperate method in order to
// still leave the "setMicVolume" as a working
// method.
LocalMedia.prototype.setMicIfEnabled = function (volume) {
if (!this.config.autoAdjustMic) {
return;
}
this.gainController.setGain(volume);
};
// Video controls
LocalMedia.prototype.pauseVideo = function () {
this._videoEnabled(false);
this.emit('videoOff');
};
LocalMedia.prototype.resumeVideo = function () {
this._videoEnabled(true);
this.emit('videoOn');
};
// Combined controls
LocalMedia.prototype.pause = function () {
this.mute();
this.pauseVideo();
};
LocalMedia.prototype.resume = function () {
this.unmute();
this.resumeVideo();
};
// Internal methods for enabling/disabling audio/video
LocalMedia.prototype._audioEnabled = function (bool) {
// work around for chrome 27 bug where disabling tracks
// doesn't seem to work (works in canary, remove when working)
this.setMicIfEnabled(bool ? 1 : 0);
this.localStreams.forEach(function (stream) {
stream.getAudioTracks().forEach(function (track) {
track.enabled = !!bool;
});
});
};
LocalMedia.prototype._videoEnabled = function (bool) {
this.localStreams.forEach(function (stream) {
stream.getVideoTracks().forEach(function (track) {
track.enabled = !!bool;
});
});
};
// check if all audio streams are enabled
LocalMedia.prototype.isAudioEnabled = function () {
var enabled = true;
this.localStreams.forEach(function (stream) {
stream.getAudioTracks().forEach(function (track) {
enabled = enabled && track.enabled;
});
});
return enabled;
};
// check if all video streams are enabled
LocalMedia.prototype.isVideoEnabled = function () {
var enabled = true;
this.localStreams.forEach(function (stream) {
stream.getVideoTracks().forEach(function (track) {
enabled = enabled && track.enabled;
});
});
return enabled;
};
// Backwards Compat
LocalMedia.prototype.startLocalMedia = LocalMedia.prototype.start;
LocalMedia.prototype.stopLocalMedia = LocalMedia.prototype.stop;
// fallback for old .localStream behaviour
Object.defineProperty(LocalMedia.prototype, 'localStream', {
get: function () {
return this.localStreams.length > 0 ? this.localStreams[0] : null;
}
});
// fallback for old .localScreen behaviour
Object.defineProperty(LocalMedia.prototype, 'localScreen', {
get: function () {
return this.localScreens.length > 0 ? this.localScreens[0] : null;
}
});
module.exports = LocalMedia;
},{"getscreenmedia":14,"getusermedia":12,"hark":13,"mediastream-gain":15,"mockconsole":6,"util":2,"webrtcsupport":5,"wildemitter":4}],16:[function(require,module,exports){
// Underscore.js 1.8.2
// http://underscorejs.org
// (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
// Underscore may be freely distributed under the MIT license.
(function() {
// Baseline setup
// --------------
// Establish the root object, `window` in the browser, or `exports` on the server.
var root = this;
// Save the previous value of the `_` variable.
var previousUnderscore = root._;
// Save bytes in the minified (but not gzipped) version:
var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
// Create quick reference variables for speed access to core prototypes.
var
push = ArrayProto.push,
slice = ArrayProto.slice,
toString = ObjProto.toString,
hasOwnProperty = ObjProto.hasOwnProperty;
// All **ECMAScript 5** native function implementations that we hope to use
// are declared here.
var
nativeIsArray = Array.isArray,
nativeKeys = Object.keys,
nativeBind = FuncProto.bind,
nativeCreate = Object.create;
// Naked function reference for surrogate-prototype-swapping.
var Ctor = function(){};
// Create a safe reference to the Underscore object for use below.
var _ = function(obj) {
if (obj instanceof _) return obj;
if (!(this instanceof _)) return new _(obj);
this._wrapped = obj;
};
// Export the Underscore object for **Node.js**, with
// backwards-compatibility for the old `require()` API. If we're in
// the browser, add `_` as a global object.
if (typeof exports !== 'undefined') {
if (typeof module !== 'undefined' && module.exports) {
exports = module.exports = _;
}
exports._ = _;
} else {
root._ = _;
}
// Current version.
_.VERSION = '1.8.2';
// Internal function that returns an efficient (for current engines) version
// of the passed-in callback, to be repeatedly applied in other Underscore
// functions.
var optimizeCb = function(func, context, argCount) {
if (context === void 0) return func;
switch (argCount == null ? 3 : argCount) {
case 1: return function(value) {
return func.call(context, value);
};
case 2: return function(value, other) {
return func.call(context, value, other);
};
case 3: return function(value, index, collection) {
return func.call(context, value, index, collection);
};
case 4: return function(accumulator, value, index, collection) {
return func.call(context, accumulator, value, index, collection);
};
}
return function() {
return func.apply(context, arguments);
};
};
// A mostly-internal function to generate callbacks that can be applied
// to each element in a collection, returning the desired result — either
// identity, an arbitrary callback, a property matcher, or a property accessor.
var cb = function(value, context, argCount) {
if (value == null) return _.identity;
if (_.isFunction(value)) return optimizeCb(value, context, argCount);
if (_.isObject(value)) return _.matcher(value);
return _.property(value);
};
_.iteratee = function(value, context) {
return cb(value, context, Infinity);
};
// An internal function for creating assigner functions.
var createAssigner = function(keysFunc, undefinedOnly) {
return function(obj) {
var length = arguments.length;
if (length < 2 || obj == null) return obj;
for (var index = 1; index < length; index++) {
var source = arguments[index],
keys = keysFunc(source),
l = keys.length;
for (var i = 0; i < l; i++) {
var key = keys[i];
if (!undefinedOnly || obj[key] === void 0) obj[key] = source[key];
}
}
return obj;
};
};
// An internal function for creating a new object that inherits from another.
var baseCreate = function(prototype) {
if (!_.isObject(prototype)) return {};
if (nativeCreate) return nativeCreate(prototype);
Ctor.prototype = prototype;
var result = new Ctor;
Ctor.prototype = null;
return result;
};
// Helper for collection methods to determine whether a collection
// should be iterated as an array or as an object
// Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
var isArrayLike = function(collection) {
var length = collection && collection.length;
return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
};
// Collection Functions
// --------------------
// The cornerstone, an `each` implementation, aka `forEach`.
// Handles raw objects in addition to array-likes. Treats all
// sparse array-likes as if they were dense.
_.each = _.forEach = function(obj, iteratee, context) {
iteratee = optimizeCb(iteratee, context);
var i, length;
if (isArrayLike(obj)) {
for (i = 0, length = obj.length; i < length; i++) {
iteratee(obj[i], i, obj);
}
} else {
var keys = _.keys(obj);
for (i = 0, length = keys.length; i < length; i++) {
iteratee(obj[keys[i]], keys[i], obj);
}
}
return obj;
};
// Return the results of applying the iteratee to each element.
_.map = _.collect = function(obj, iteratee, context) {
iteratee = cb(iteratee, context);
var keys = !isArrayLike(obj) && _.keys(obj),
length = (keys || obj).length,
results = Array(length);
for (var index = 0; index < length; index++) {
var currentKey = keys ? keys[index] : index;
results[index] = iteratee(obj[currentKey], currentKey, obj);
}
return results;
};
// Create a reducing function iterating left or right.
function createReduce(dir) {
// Optimized iterator function as using arguments.length
// in the main function will deoptimize the, see #1991.
function iterator(obj, iteratee, memo, keys, index, length) {
for (; index >= 0 && index < length; index += dir) {
var currentKey = keys ? keys[index] : index;
memo = iteratee(memo, obj[currentKey], currentKey, obj);
}
return memo;
}
return function(obj, iteratee, memo, context) {
iteratee = optimizeCb(iteratee, context, 4);
var keys = !isArrayLike(obj) && _.keys(obj),
length = (keys || obj).length,
index = dir > 0 ? 0 : length - 1;
// Determine the initial value if none is provided.
if (arguments.length < 3) {
memo = obj[keys ? keys[index] : index];
index += dir;
}
return iterator(obj, iteratee, memo, keys, index, length);
};
}
// **Reduce** builds up a single result from a list of values, aka `inject`,
// or `foldl`.
_.reduce = _.foldl = _.inject = createReduce(1);
// The right-associative version of reduce, also known as `foldr`.
_.reduceRight = _.foldr = createReduce(-1);
// Return the first value which passes a truth test. Aliased as `detect`.
_.find = _.detect = function(obj, predicate, context) {
var key;
if (isArrayLike(obj)) {
key = _.findIndex(obj, predicate, context);
} else {
key = _.findKey(obj, predicate, context);
}
if (key !== void 0 && key !== -1) return obj[key];
};
// Return all the elements that pass a truth test.
// Aliased as `select`.
_.filter = _.select = function(obj, predicate, context) {
var results = [];
predicate = cb(predicate, context);
_.each(obj, function(value, index, list) {
if (predicate(value, index, list)) results.push(value);
});
return results;
};
// Return all the elements for which a truth test fails.
_.reject = function(obj, predicate, context) {
return _.filter(obj, _.negate(cb(predicate)), context);
};
// Determine whether all of the elements match a truth test.
// Aliased as `all`.
_.every = _.all = function(obj, predicate, context) {
predicate = cb(predicate, context);
var keys = !isArrayLike(obj) && _.keys(obj),
length = (keys || obj).length;
for (var index = 0; index < length; index++) {
var currentKey = keys ? keys[index] : index;
if (!predicate(obj[currentKey], currentKey, obj)) return false;
}
return true;
};
// Determine if at least one element in the object matches a truth test.
// Aliased as `any`.
_.some = _.any = function(obj, predicate, context) {
predicate = cb(predicate, context);
var keys = !isArrayLike(obj) && _.keys(obj),
length = (keys || obj).length;
for (var index = 0; index < length; index++) {
var currentKey = keys ? keys[index] : index;
if (predicate(obj[currentKey], currentKey, obj)) return true;
}
return false;
};
// Determine if the array or object contains a given value (using `===`).
// Aliased as `includes` and `include`.
_.contains = _.includes = _.include = function(obj, target, fromIndex) {
if (!isArrayLike(obj)) obj = _.values(obj);
return _.indexOf(obj, target, typeof fromIndex == 'number' && fromIndex) >= 0;
};
// Invoke a method (with arguments) on every item in a collection.
_.invoke = function(obj, method) {
var args = slice.call(arguments, 2);
var isFunc = _.isFunction(method);
return _.map(obj, function(value) {
var func = isFunc ? method : value[method];
return func == null ? func : func.apply(value, args);
});
};
// Convenience version of a common use case of `map`: fetching a property.
_.pluck = function(obj, key) {
return _.map(obj, _.property(key));
};
// Convenience version of a common use case of `filter`: selecting only objects
// containing specific `key:value` pairs.
_.where = function(obj, attrs) {
return _.filter(obj, _.matcher(attrs));
};
// Convenience version of a common use case of `find`: getting the first object
// containing specific `key:value` pairs.
_.findWhere = function(obj, attrs) {
return _.find(obj, _.matcher(attrs));
};
// Return the maximum element (or element-based computation).
_.max = function(obj, iteratee, context) {
var result = -Infinity, lastComputed = -Infinity,
value, computed;
if (iteratee == null && obj != null) {
obj = isArrayLike(obj) ? obj : _.values(obj);
for (var i = 0, length = obj.length; i < length; i++) {
value = obj[i];
if (value > result) {
result = value;
}
}
} else {
iteratee = cb(iteratee, context);
_.each(obj, function(value, index, list) {
computed = iteratee(value, index, list);
if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
result = value;
lastComputed = computed;
}
});
}
return result;
};
// Return the minimum element (or element-based computation).
_.min = function(obj, iteratee, context) {
var result = Infinity, lastComputed = Infinity,
value, computed;
if (iteratee == null && obj != null) {
obj = isArrayLike(obj) ? obj : _.values(obj);
for (var i = 0, length = obj.length; i < length; i++) {
value = obj[i];
if (value < result) {
result = value;
}
}
} else {
iteratee = cb(iteratee, context);
_.each(obj, function(value, index, list) {
computed = iteratee(value, index, list);
if (computed < lastComputed || computed === Infinity && result === Infinity) {
result = value;
lastComputed = computed;
}
});
}
return result;
};
// Shuffle a collection, using the modern version of the
// [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
_.shuffle = function(obj) {
var set = isArrayLike(obj) ? obj : _.values(obj);
var length = set.length;
var shuffled = Array(length);
for (var index = 0, rand; index < length; index++) {
rand = _.random(0, index);
if (rand !== index) shuffled[index] = shuffled[rand];
shuffled[rand] = set[index];
}
return shuffled;
};
// Sample **n** random values from a collection.
// If **n** is not specified, returns a single random element.
// The internal `guard` argument allows it to work with `map`.
_.sample = function(obj, n, guard) {
if (n == null || guard) {
if (!isArrayLike(obj)) obj = _.values(obj);
return obj[_.random(obj.length - 1)];
}
return _.shuffle(obj).slice(0, Math.max(0, n));
};
// Sort the object's values by a criterion produced by an iteratee.
_.sortBy = function(obj, iteratee, context) {
iteratee = cb(iteratee, context);
return _.pluck(_.map(obj, function(value, index, list) {
return {
value: value,
index: index,
criteria: iteratee(value, index, list)
};
}).sort(function(left, right) {
var a = left.criteria;
var b = right.criteria;
if (a !== b) {
if (a > b || a === void 0) return 1;
if (a < b || b === void 0) return -1;
}
return left.index - right.index;
}), 'value');
};
// An internal function used for aggregate "group by" operations.
var group = function(behavior) {
return function(obj, iteratee, context) {
var result = {};
iteratee = cb(iteratee, context);
_.each(obj, function(value, index) {
var key = iteratee(value, index, obj);
behavior(result, value, key);
});
return result;
};
};
// Groups the object's values by a criterion. Pass either a string attribute
// to group by, or a function that returns the criterion.
_.groupBy = group(function(result, value, key) {
if (_.has(result, key)) result[key].push(value); else result[key] = [value];
});
// Indexes the object's values by a criterion, similar to `groupBy`, but for
// when you know that your index values will be unique.
_.indexBy = group(function(result, value, key) {
result[key] = value;
});
// Counts instances of an object that group by a certain criterion. Pass
// either a string attribute to count by, or a function that returns the
// criterion.
_.countBy = group(function(result, value, key) {
if (_.has(result, key)) result[key]++; else result[key] = 1;
});
// Safely create a real, live array from anything iterable.
_.toArray = function(obj) {
if (!obj) return [];
if (_.isArray(obj)) return slice.call(obj);
if (isArrayLike(obj)) return _.map(obj, _.identity);
return _.values(obj);
};
// Return the number of elements in an object.
_.size = function(obj) {
if (obj == null) return 0;
return isArrayLike(obj) ? obj.length : _.keys(obj).length;
};
// Split a collection into two arrays: one whose elements all satisfy the given
// predicate, and one whose elements all do not satisfy the predicate.
_.partition = function(obj, predicate, context) {
predicate = cb(predicate, context);
var pass = [], fail = [];
_.each(obj, function(value, key, obj) {
(predicate(value, key, obj) ? pass : fail).push(value);
});
return [pass, fail];
};
// Array Functions
// ---------------
// Get the first element of an array. Passing **n** will return the first N
// values in the array. Aliased as `head` and `take`. The **guard** check
// allows it to work with `_.map`.
_.first = _.head = _.take = function(array, n, guard) {
if (array == null) return void 0;
if (n == null || guard) return array[0];
return _.initial(array, array.length - n);
};
// Returns everything but the last entry of the array. Especially useful on
// the arguments object. Passing **n** will return all the values in
// the array, excluding the last N.
_.initial = function(array, n, guard) {
return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
};
// Get the last element of an array. Passing **n** will return the last N
// values in the array.
_.last = function(array, n, guard) {
if (array == null) return void 0;
if (n == null || guard) return array[array.length - 1];
return _.rest(array, Math.max(0, array.length - n));
};
// Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
// Especially useful on the arguments object. Passing an **n** will return
// the rest N values in the array.
_.rest = _.tail = _.drop = function(array, n, guard) {
return slice.call(array, n == null || guard ? 1 : n);
};
// Trim out all falsy values from an array.
_.compact = function(array) {
return _.filter(array, _.identity);
};
// Internal implementation of a recursive `flatten` function.
var flatten = function(input, shallow, strict, startIndex) {
var output = [], idx = 0;
for (var i = startIndex || 0, length = input && input.length; i < length; i++) {
var value = input[i];
if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
//flatten current level of array or arguments object
if (!shallow) value = flatten(value, shallow, strict);
var j = 0, len = value.length;
output.length += len;
while (j < len) {
output[idx++] = value[j++];
}
} else if (!strict) {
output[idx++] = value;
}
}
return output;
};
// Flatten out an array, either recursively (by default), or just one level.
_.flatten = function(array, shallow) {
return flatten(array, shallow, false);
};
// Return a version of the array that does not contain the specified value(s).
_.without = function(array) {
return _.difference(array, slice.call(arguments, 1));
};
// Produce a duplicate-free version of the array. If the array has already
// been sorted, you have the option of using a faster algorithm.
// Aliased as `unique`.
_.uniq = _.unique = function(array, isSorted, iteratee, context) {
if (array == null) return [];
if (!_.isBoolean(isSorted)) {
context = iteratee;
iteratee = isSorted;
isSorted = false;
}
if (iteratee != null) iteratee = cb(iteratee, context);
var result = [];
var seen = [];
for (var i = 0, length = array.length; i < length; i++) {
var value = array[i],
computed = iteratee ? iteratee(value, i, array) : value;
if (isSorted) {
if (!i || seen !== computed) result.push(value);
seen = computed;
} else if (iteratee) {
if (!_.contains(seen, computed)) {
seen.push(computed);
result.push(value);
}
} else if (!_.contains(result, value)) {
result.push(value);
}
}
return result;
};
// Produce an array that contains the union: each distinct element from all of
// the passed-in arrays.
_.union = function() {
return _.uniq(flatten(arguments, true, true));
};
// Produce an array that contains every item shared between all the
// passed-in arrays.
_.intersection = function(array) {
if (array == null) return [];
var result = [];
var argsLength = arguments.length;
for (var i = 0, length = array.length; i < length; i++) {
var item = array[i];
if (_.contains(result, item)) continue;
for (var j = 1; j < argsLength; j++) {
if (!_.contains(arguments[j], item)) break;
}
if (j === argsLength) result.push(item);
}
return result;
};
// Take the difference between one array and a number of other arrays.
// Only the elements present in just the first array will remain.
_.difference = function(array) {
var rest = flatten(arguments, true, true, 1);
return _.filter(array, function(value){
return !_.contains(rest, value);
});
};
// Zip together multiple lists into a single array -- elements that share
// an index go together.
_.zip = function() {
return _.unzip(arguments);
};
// Complement of _.zip. Unzip accepts an array of arrays and groups
// each array's elements on shared indices
_.unzip = function(array) {
var length = array && _.max(array, 'length').length || 0;
var result = Array(length);
for (var index = 0; index < length; index++) {
result[index] = _.pluck(array, index);
}
return result;
};
// Converts lists into objects. Pass either a single array of `[key, value]`
// pairs, or two parallel arrays of the same length -- one of keys, and one of
// the corresponding values.
_.object = function(list, values) {
var result = {};
for (var i = 0, length = list && list.length; i < length; i++) {
if (values) {
result[list[i]] = values[i];
} else {
result[list[i][0]] = list[i][1];
}
}
return result;
};
// Return the position of the first occurrence of an item in an array,
// or -1 if the item is not included in the array.
// If the array is large and already in sort order, pass `true`
// for **isSorted** to use binary search.
_.indexOf = function(array, item, isSorted) {
var i = 0, length = array && array.length;
if (typeof isSorted == 'number') {
i = isSorted < 0 ? Math.max(0, length + isSorted) : isSorted;
} else if (isSorted && length) {
i = _.sortedIndex(array, item);
return array[i] === item ? i : -1;
}
if (item !== item) {
return _.findIndex(slice.call(array, i), _.isNaN);
}
for (; i < length; i++) if (array[i] === item) return i;
return -1;
};
_.lastIndexOf = function(array, item, from) {
var idx = array ? array.length : 0;
if (typeof from == 'number') {
idx = from < 0 ? idx + from + 1 : Math.min(idx, from + 1);
}
if (item !== item) {
return _.findLastIndex(slice.call(array, 0, idx), _.isNaN);
}
while (--idx >= 0) if (array[idx] === item) return idx;
return -1;
};
// Generator function to create the findIndex and findLastIndex functions
function createIndexFinder(dir) {
return function(array, predicate, context) {
predicate = cb(predicate, context);
var length = array != null && array.length;
var index = dir > 0 ? 0 : length - 1;
for (; index >= 0 && index < length; index += dir) {
if (predicate(array[index], index, array)) return index;
}
return -1;
};
}
// Returns the first index on an array-like that passes a predicate test
_.findIndex = createIndexFinder(1);
_.findLastIndex = createIndexFinder(-1);
// Use a comparator function to figure out the smallest index at which
// an object should be inserted so as to maintain order. Uses binary search.
_.sortedIndex = function(array, obj, iteratee, context) {
iteratee = cb(iteratee, context, 1);
var value = iteratee(obj);
var low = 0, high = array.length;
while (low < high) {
var mid = Math.floor((low + high) / 2);
if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
}
return low;
};
// Generate an integer Array containing an arithmetic progression. A port of
// the native Python `range()` function. See
// [the Python documentation](http://docs.python.org/library/functions.html#range).
_.range = function(start, stop, step) {
if (arguments.length <= 1) {
stop = start || 0;
start = 0;
}
step = step || 1;
var length = Math.max(Math.ceil((stop - start) / step), 0);
var range = Array(length);
for (var idx = 0; idx < length; idx++, start += step) {
range[idx] = start;
}
return range;
};
// Function (ahem) Functions
// ------------------
// Determines whether to execute a function as a constructor
// or a normal function with the provided arguments
var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
var self = baseCreate(sourceFunc.prototype);
var result = sourceFunc.apply(self, args);
if (_.isObject(result)) return result;
return self;
};
// Create a function bound to a given object (assigning `this`, and arguments,
// optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
// available.
_.bind = function(func, context) {
if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
var args = slice.call(arguments, 2);
var bound = function() {
return executeBound(func, bound, context, this, args.concat(slice.call(arguments)));
};
return bound;
};
// Partially apply a function by creating a version that has had some of its
// arguments pre-filled, without changing its dynamic `this` context. _ acts
// as a placeholder, allowing any combination of arguments to be pre-filled.
_.partial = function(func) {
var boundArgs = slice.call(arguments, 1);
var bound = function() {
var position = 0, length = boundArgs.length;
var args = Array(length);
for (var i = 0; i < length; i++) {
args[i] = boundArgs[i] === _ ? arguments[position++] : boundArgs[i];
}
while (position < arguments.length) args.push(arguments[position++]);
return executeBound(func, bound, this, this, args);
};
return bound;
};
// Bind a number of an object's methods to that object. Remaining arguments
// are the method names to be bound. Useful for ensuring that all callbacks
// defined on an object belong to it.
_.bindAll = function(obj) {
var i, length = arguments.length, key;
if (length <= 1) throw new Error('bindAll must be passed function names');
for (i = 1; i < length; i++) {
key = arguments[i];
obj[key] = _.bind(obj[key], obj);
}
return obj;
};
// Memoize an expensive function by storing its results.
_.memoize = function(func, hasher) {
var memoize = function(key) {
var cache = memoize.cache;
var address = '' + (hasher ? hasher.apply(this, arguments) : key);
if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
return cache[address];
};
memoize.cache = {};
return memoize;
};
// Delays a function for the given number of milliseconds, and then calls
// it with the arguments supplied.
_.delay = function(func, wait) {
var args = slice.call(arguments, 2);
return setTimeout(function(){
return func.apply(null, args);
}, wait);
};
// Defers a function, scheduling it to run after the current call stack has
// cleared.
_.defer = _.partial(_.delay, _, 1);
// Returns a function, that, when invoked, will only be triggered at most once
// during a given window of time. Normally, the throttled function will run
// as much as it can, without ever going more than once per `wait` duration;
// but if you'd like to disable the execution on the leading edge, pass
// `{leading: false}`. To disable execution on the trailing edge, ditto.
_.throttle = function(func, wait, options) {
var context, args, result;
var timeout = null;
var previous = 0;
if (!options) options = {};
var later = function() {
previous = options.leading === false ? 0 : _.now();
timeout = null;
result = func.apply(context, args);
if (!timeout) context = args = null;
};
return function() {
var now = _.now();
if (!previous && options.leading === false) previous = now;
var remaining = wait - (now - previous);
context = this;
args = arguments;
if (remaining <= 0 || remaining > wait) {
if (timeout) {
clearTimeout(timeout);
timeout = null;
}
previous = now;
result = func.apply(context, args);
if (!timeout) context = args = null;
} else if (!timeout && options.trailing !== false) {
timeout = setTimeout(later, remaining);
}
return result;
};
};
// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
_.debounce = function(func, wait, immediate) {
var timeout, args, context, timestamp, result;
var later = function() {
var last = _.now() - timestamp;
if (last < wait && last >= 0) {
timeout = setTimeout(later, wait - last);
} else {
timeout = null;
if (!immediate) {
result = func.apply(context, args);
if (!timeout) context = args = null;
}
}
};
return function() {
context = this;
args = arguments;
timestamp = _.now();
var callNow = immediate && !timeout;
if (!timeout) timeout = setTimeout(later, wait);
if (callNow) {
result = func.apply(context, args);
context = args = null;
}
return result;
};
};
// Returns the first function passed as an argument to the second,
// allowing you to adjust arguments, run code before and after, and
// conditionally execute the original function.
_.wrap = function(func, wrapper) {
return _.partial(wrapper, func);
};
// Returns a negated version of the passed-in predicate.
_.negate = function(predicate) {
return function() {
return !predicate.apply(this, arguments);
};
};
// Returns a function that is the composition of a list of functions, each
// consuming the return value of the function that follows.
_.compose = function() {
var args = arguments;
var start = args.length - 1;
return function() {
var i = start;
var result = args[start].apply(this, arguments);
while (i--) result = args[i].call(this, result);
return result;
};
};
// Returns a function that will only be executed on and after the Nth call.
_.after = function(times, func) {
return function() {
if (--times < 1) {
return func.apply(this, arguments);
}
};
};
// Returns a function that will only be executed up to (but not including) the Nth call.
_.before = function(times, func) {
var memo;
return function() {
if (--times > 0) {
memo = func.apply(this, arguments);
}
if (times <= 1) func = null;
return memo;
};
};
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = _.partial(_.before, 2);
// Object Functions
// ----------------
// Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
function collectNonEnumProps(obj, keys) {
var nonEnumIdx = nonEnumerableProps.length;
var constructor = obj.constructor;
var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto;
// Constructor is a special case.
var prop = 'constructor';
if (_.has(obj, prop) && !_.contains(keys, prop)) keys.push(prop);
while (nonEnumIdx--) {
prop = nonEnumerableProps[nonEnumIdx];
if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) {
keys.push(prop);
}
}
}
// Retrieve the names of an object's own properties.
// Delegates to **ECMAScript 5**'s native `Object.keys`
_.keys = function(obj) {
if (!_.isObject(obj)) return [];
if (nativeKeys) return nativeKeys(obj);
var keys = [];
for (var key in obj) if (_.has(obj, key)) keys.push(key);
// Ahem, IE < 9.
if (hasEnumBug) collectNonEnumProps(obj, keys);
return keys;
};
// Retrieve all the property names of an object.
_.allKeys = function(obj) {
if (!_.isObject(obj)) return [];
var keys = [];
for (var key in obj) keys.push(key);
// Ahem, IE < 9.
if (hasEnumBug) collectNonEnumProps(obj, keys);
return keys;
};
// Retrieve the values of an object's properties.
_.values = function(obj) {
var keys = _.keys(obj);
var length = keys.length;
var values = Array(length);
for (var i = 0; i < length; i++) {
values[i] = obj[keys[i]];
}
return values;
};
// Returns the results of applying the iteratee to each element of the object
// In contrast to _.map it returns an object
_.mapObject = function(obj, iteratee, context) {
iteratee = cb(iteratee, context);
var keys = _.keys(obj),
length = keys.length,
results = {},
currentKey;
for (var index = 0; index < length; index++) {
currentKey = keys[index];
results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
}
return results;
};
// Convert an object into a list of `[key, value]` pairs.
_.pairs = function(obj) {
var keys = _.keys(obj);
var length = keys.length;
var pairs = Array(length);
for (var i = 0; i < length; i++) {
pairs[i] = [keys[i], obj[keys[i]]];
}
return pairs;
};
// Invert the keys and values of an object. The values must be serializable.
_.invert = function(obj) {
var result = {};
var keys = _.keys(obj);
for (var i = 0, length = keys.length; i < length; i++) {
result[obj[keys[i]]] = keys[i];
}
return result;
};
// Return a sorted list of the function names available on the object.
// Aliased as `methods`
_.functions = _.methods = function(obj) {
var names = [];
for (var key in obj) {
if (_.isFunction(obj[key])) names.push(key);
}
return names.sort();
};
// Extend a given object with all the properties in passed-in object(s).
_.extend = createAssigner(_.allKeys);
// Assigns a given object with all the own properties in the passed-in object(s)
// (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
_.extendOwn = _.assign = createAssigner(_.keys);
// Returns the first key on an object that passes a predicate test
_.findKey = function(obj, predicate, context) {
predicate = cb(predicate, context);
var keys = _.keys(obj), key;
for (var i = 0, length = keys.length; i < length; i++) {
key = keys[i];
if (predicate(obj[key], key, obj)) return key;
}
};
// Return a copy of the object only containing the whitelisted properties.
_.pick = function(object, oiteratee, context) {
var result = {}, obj = object, iteratee, keys;
if (obj == null) return result;
if (_.isFunction(oiteratee)) {
keys = _.allKeys(obj);
iteratee = optimizeCb(oiteratee, context);
} else {
keys = flatten(arguments, false, false, 1);
iteratee = function(value, key, obj) { return key in obj; };
obj = Object(obj);
}
for (var i = 0, length = keys.length; i < length; i++) {
var key = keys[i];
var value = obj[key];
if (iteratee(value, key, obj)) result[key] = value;
}
return result;
};
// Return a copy of the object without the blacklisted properties.
_.omit = function(obj, iteratee, context) {
if (_.isFunction(iteratee)) {
iteratee = _.negate(iteratee);
} else {
var keys = _.map(flatten(arguments, false, false, 1), String);
iteratee = function(value, key) {
return !_.contains(keys, key);
};
}
return _.pick(obj, iteratee, context);
};
// Fill in a given object with default properties.
_.defaults = createAssigner(_.allKeys, true);
// Create a (shallow-cloned) duplicate of an object.
_.clone = function(obj) {
if (!_.isObject(obj)) return obj;
return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
};
// Invokes interceptor with the obj, and then returns obj.
// The primary purpose of this method is to "tap into" a method chain, in
// order to perform operations on intermediate results within the chain.
_.tap = function(obj, interceptor) {
interceptor(obj);
return obj;
};
// Returns whether an object has a given set of `key:value` pairs.
_.isMatch = function(object, attrs) {
var keys = _.keys(attrs), length = keys.length;
if (object == null) return !length;
var obj = Object(object);
for (var i = 0; i < length; i++) {
var key = keys[i];
if (attrs[key] !== obj[key] || !(key in obj)) return false;
}
return true;
};
// Internal recursive comparison function for `isEqual`.
var eq = function(a, b, aStack, bStack) {
// Identical objects are equal. `0 === -0`, but they aren't identical.
// See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
if (a === b) return a !== 0 || 1 / a === 1 / b;
// A strict comparison is necessary because `null == undefined`.
if (a == null || b == null) return a === b;
// Unwrap any wrapped objects.
if (a instanceof _) a = a._wrapped;
if (b instanceof _) b = b._wrapped;
// Compare `[[Class]]` names.
var className = toString.call(a);
if (className !== toString.call(b)) return false;
switch (className) {
// Strings, numbers, regular expressions, dates, and booleans are compared by value.
case '[object RegExp]':
// RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
case '[object String]':
// Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
// equivalent to `new String("5")`.
return '' + a === '' + b;
case '[object Number]':
// `NaN`s are equivalent, but non-reflexive.
// Object(NaN) is equivalent to NaN
if (+a !== +a) return +b !== +b;
// An `egal` comparison is performed for other numeric values.
return +a === 0 ? 1 / +a === 1 / b : +a === +b;
case '[object Date]':
case '[object Boolean]':
// Coerce dates and booleans to numeric primitive values. Dates are compared by their
// millisecond representations. Note that invalid dates with millisecond representations
// of `NaN` are not equivalent.
return +a === +b;
}
var areArrays = className === '[object Array]';
if (!areArrays) {
if (typeof a != 'object' || typeof b != 'object') return false;
// Objects with different constructors are not equivalent, but `Object`s or `Array`s
// from different frames are.
var aCtor = a.constructor, bCtor = b.constructor;
if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
_.isFunction(bCtor) && bCtor instanceof bCtor)
&& ('constructor' in a && 'constructor' in b)) {
return false;
}
}
// Assume equality for cyclic structures. The algorithm for detecting cyclic
// structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
// Initializing stack of traversed objects.
// It's done here since we only need them for objects and arrays comparison.
aStack = aStack || [];
bStack = bStack || [];
var length = aStack.length;
while (length--) {
// Linear search. Performance is inversely proportional to the number of
// unique nested structures.
if (aStack[length] === a) return bStack[length] === b;
}
// Add the first object to the stack of traversed objects.
aStack.push(a);
bStack.push(b);
// Recursively compare objects and arrays.
if (areArrays) {
// Compare array lengths to determine if a deep comparison is necessary.
length = a.length;
if (length !== b.length) return false;
// Deep compare the contents, ignoring non-numeric properties.
while (length--) {
if (!eq(a[length], b[length], aStack, bStack)) return false;
}
} else {
// Deep compare objects.
var keys = _.keys(a), key;
length = keys.length;
// Ensure that both objects contain the same number of properties before comparing deep equality.
if (_.keys(b).length !== length) return false;
while (length--) {
// Deep compare each member
key = keys[length];
if (!(_.has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
}
}
// Remove the first object from the stack of traversed objects.
aStack.pop();
bStack.pop();
return true;
};
// Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) {
return eq(a, b);
};
// Is a given array, string, or object empty?
// An "empty" object has no enumerable own-properties.
_.isEmpty = function(obj) {
if (obj == null) return true;
if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
return _.keys(obj).length === 0;
};
// Is a given value a DOM element?
_.isElement = function(obj) {
return !!(obj && obj.nodeType === 1);
};
// Is a given value an array?
// Delegates to ECMA5's native Array.isArray
_.isArray = nativeIsArray || function(obj) {
return toString.call(obj) === '[object Array]';
};
// Is a given variable an object?
_.isObject = function(obj) {
var type = typeof obj;
return type === 'function' || type === 'object' && !!obj;
};
// Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError.
_.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) {
_['is' + name] = function(obj) {
return toString.call(obj) === '[object ' + name + ']';
};
});
// Define a fallback version of the method in browsers (ahem, IE < 9), where
// there isn't any inspectable "Arguments" type.
if (!_.isArguments(arguments)) {
_.isArguments = function(obj) {
return _.has(obj, 'callee');
};
}
// Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8,
// IE 11 (#1621), and in Safari 8 (#1929).
if (typeof /./ != 'function' && typeof Int8Array != 'object') {
_.isFunction = function(obj) {
return typeof obj == 'function' || false;
};
}
// Is a given object a finite number?
_.isFinite = function(obj) {
return isFinite(obj) && !isNaN(parseFloat(obj));
};
// Is the given value `NaN`? (NaN is the only number which does not equal itself).
_.isNaN = function(obj) {
return _.isNumber(obj) && obj !== +obj;
};
// Is a given value a boolean?
_.isBoolean = function(obj) {
return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
};
// Is a given value equal to null?
_.isNull = function(obj) {
return obj === null;
};
// Is a given variable undefined?
_.isUndefined = function(obj) {
return obj === void 0;
};
// Shortcut function for checking if an object has a given property directly
// on itself (in other words, not on a prototype).
_.has = function(obj, key) {
return obj != null && hasOwnProperty.call(obj, key);
};
// Utility Functions
// -----------------
// Run Underscore.js in *noConflict* mode, returning the `_` variable to its
// previous owner. Returns a reference to the Underscore object.
_.noConflict = function() {
root._ = previousUnderscore;
return this;
};
// Keep the identity function around for default iteratees.
_.identity = function(value) {
return value;
};
// Predicate-generating functions. Often useful outside of Underscore.
_.constant = function(value) {
return function() {
return value;
};
};
_.noop = function(){};
_.property = function(key) {
return function(obj) {
return obj == null ? void 0 : obj[key];
};
};
// Generates a function for a given object that returns a given property.
_.propertyOf = function(obj) {
return obj == null ? function(){} : function(key) {
return obj[key];
};
};
// Returns a predicate for checking whether an object has a given set of
// `key:value` pairs.
_.matcher = _.matches = function(attrs) {
attrs = _.extendOwn({}, attrs);
return function(obj) {
return _.isMatch(obj, attrs);
};
};
// Run a function **n** times.
_.times = function(n, iteratee, context) {
var accum = Array(Math.max(0, n));
iteratee = optimizeCb(iteratee, context, 1);
for (var i = 0; i < n; i++) accum[i] = iteratee(i);
return accum;
};
// Return a random integer between min and max (inclusive).
_.random = function(min, max) {
if (max == null) {
max = min;
min = 0;
}
return min + Math.floor(Math.random() * (max - min + 1));
};
// A (possibly faster) way to get the current timestamp as an integer.
_.now = Date.now || function() {
return new Date().getTime();
};
// List of HTML entities for escaping.
var escapeMap = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": ''',
'`': '`'
};
var unescapeMap = _.invert(escapeMap);
// Functions for escaping and unescaping strings to/from HTML interpolation.
var createEscaper = function(map) {
var escaper = function(match) {
return map[match];
};
// Regexes for identifying a key that needs to be escaped
var source = '(?:' + _.keys(map).join('|') + ')';
var testRegexp = RegExp(source);
var replaceRegexp = RegExp(source, 'g');
return function(string) {
string = string == null ? '' : '' + string;
return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
};
};
_.escape = createEscaper(escapeMap);
_.unescape = createEscaper(unescapeMap);
// If the value of the named `property` is a function then invoke it with the
// `object` as context; otherwise, return it.
_.result = function(object, property, fallback) {
var value = object == null ? void 0 : object[property];
if (value === void 0) {
value = fallback;
}
return _.isFunction(value) ? value.call(object) : value;
};
// Generate a unique integer id (unique within the entire client session).
// Useful for temporary DOM ids.
var idCounter = 0;
_.uniqueId = function(prefix) {
var id = ++idCounter + '';
return prefix ? prefix + id : id;
};
// By default, Underscore uses ERB-style template delimiters, change the
// following template settings to use alternative delimiters.
_.templateSettings = {
evaluate : /<%([\s\S]+?)%>/g,
interpolate : /<%=([\s\S]+?)%>/g,
escape : /<%-([\s\S]+?)%>/g
};
// When customizing `templateSettings`, if you don't want to define an
// interpolation, evaluation or escaping regex, we need one that is
// guaranteed not to match.
var noMatch = /(.)^/;
// Certain characters need to be escaped so that they can be put into a
// string literal.
var escapes = {
"'": "'",
'\\': '\\',
'\r': 'r',
'\n': 'n',
'\u2028': 'u2028',
'\u2029': 'u2029'
};
var escaper = /\\|'|\r|\n|\u2028|\u2029/g;
var escapeChar = function(match) {
return '\\' + escapes[match];
};
// JavaScript micro-templating, similar to John Resig's implementation.
// Underscore templating handles arbitrary delimiters, preserves whitespace,
// and correctly escapes quotes within interpolated code.
// NB: `oldSettings` only exists for backwards compatibility.
_.template = function(text, settings, oldSettings) {
if (!settings && oldSettings) settings = oldSettings;
settings = _.defaults({}, settings, _.templateSettings);
// Combine delimiters into one regular expression via alternation.
var matcher = RegExp([
(settings.escape || noMatch).source,
(settings.interpolate || noMatch).source,
(settings.evaluate || noMatch).source
].join('|') + '|$', 'g');
// Compile the template source, escaping string literals appropriately.
var index = 0;
var source = "__p+='";
text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
source += text.slice(index, offset).replace(escaper, escapeChar);
index = offset + match.length;
if (escape) {
source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
} else if (interpolate) {
source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
} else if (evaluate) {
source += "';\n" + evaluate + "\n__p+='";
}
// Adobe VMs need the match returned to produce the correct offest.
return match;
});
source += "';\n";
// If a variable is not specified, place data values in local scope.
if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
source = "var __t,__p='',__j=Array.prototype.join," +
"print=function(){__p+=__j.call(arguments,'');};\n" +
source + 'return __p;\n';
try {
var render = new Function(settings.variable || 'obj', '_', source);
} catch (e) {
e.source = source;
throw e;
}
var template = function(data) {
return render.call(this, data, _);
};
// Provide the compiled source as a convenience for precompilation.
var argument = settings.variable || 'obj';
template.source = 'function(' + argument + '){\n' + source + '}';
return template;
};
// Add a "chain" function. Start chaining a wrapped Underscore object.
_.chain = function(obj) {
var instance = _(obj);
instance._chain = true;
return instance;
};
// OOP
// ---------------
// If Underscore is called as a function, it returns a wrapped object that
// can be used OO-style. This wrapper holds altered versions of all the
// underscore functions. Wrapped objects may be chained.
// Helper function to continue chaining intermediate results.
var result = function(instance, obj) {
return instance._chain ? _(obj).chain() : obj;
};
// Add your own custom functions to the Underscore object.
_.mixin = function(obj) {
_.each(_.functions(obj), function(name) {
var func = _[name] = obj[name];
_.prototype[name] = function() {
var args = [this._wrapped];
push.apply(args, arguments);
return result(this, func.apply(_, args));
};
});
};
// Add all of the Underscore functions to the wrapper object.
_.mixin(_);
// Add all mutator Array functions to the wrapper.
_.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
var method = ArrayProto[name];
_.prototype[name] = function() {
var obj = this._wrapped;
method.apply(obj, arguments);
if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
return result(this, obj);
};
});
// Add all accessor Array functions to the wrapper.
_.each(['concat', 'join', 'slice'], function(name) {
var method = ArrayProto[name];
_.prototype[name] = function() {
return result(this, method.apply(this._wrapped, arguments));
};
});
// Extracts the result from a wrapped and chained object.
_.prototype.value = function() {
return this._wrapped;
};
// Provide unwrapping proxy for some methods used in engine operations
// such as arithmetic and JSON stringification.
_.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
_.prototype.toString = function() {
return '' + this._wrapped;
};
// AMD registration happens at the end for compatibility with AMD loaders
// that may not enforce next-turn semantics on modules. Even though general
// practice for AMD registration is to be anonymous, underscore registers
// as a named module because, like jQuery, it is a base library that is
// popular enough to be bundled in a third party lib, but not be part of
// an AMD load request. Those cases could generate an error when an
// anonymous define() is called outside of a loader request.
if (typeof define === 'function' && define.amd) {
define('underscore', [], function() {
return _;
});
}
}.call(this));
},{}],11:[function(require,module,exports){
var WildEmitter = require('wildemitter');
var util = require('util');
function Sender(opts) {
WildEmitter.call(this);
var options = opts || {};
this.config = {
chunksize: 16384,
pacing: 0
};
// set our config from options
var item;
for (item in options) {
this.config[item] = options[item];
}
this.file = null;
this.channel = null;
}
util.inherits(Sender, WildEmitter);
Sender.prototype.send = function (file, channel) {
var self = this;
this.file = file;
this.channel = channel;
var sliceFile = function(offset) {
var reader = new window.FileReader();
reader.onload = (function() {
return function(e) {
self.channel.send(e.target.result);
self.emit('progress', offset, file.size, e.target.result);
if (file.size > offset + e.target.result.byteLength) {
window.setTimeout(sliceFile, self.config.pacing, offset + self.config.chunksize);
} else {
self.emit('progress', file.size, file.size, null);
self.emit('sentFile');
}
};
})(file);
var slice = file.slice(offset, offset + self.config.chunksize);
reader.readAsArrayBuffer(slice);
};
window.setTimeout(sliceFile, 0, 0);
};
function Receiver() {
WildEmitter.call(this);
this.receiveBuffer = [];
this.received = 0;
this.metadata = {};
this.channel = null;
}
util.inherits(Receiver, WildEmitter);
Receiver.prototype.receive = function (metadata, channel) {
var self = this;
if (metadata) {
this.metadata = metadata;
}
this.channel = channel;
// chrome only supports arraybuffers and those make it easier to calc the hash
channel.binaryType = 'arraybuffer';
this.channel.onmessage = function (event) {
var len = event.data.byteLength;
self.received += len;
self.receiveBuffer.push(event.data);
self.emit('progress', self.received, self.metadata.size, event.data);
if (self.received === self.metadata.size) {
self.emit('receivedFile', new window.Blob(self.receiveBuffer), self.metadata);
self.receiveBuffer = []; // discard receivebuffer
} else if (self.received > self.metadata.size) {
// FIXME
console.error('received more than expected, discarding...');
self.receiveBuffer = []; // just discard...
}
};
};
module.exports = {};
module.exports.support = window && window.File && window.FileReader && window.Blob;
module.exports.Sender = Sender;
module.exports.Receiver = Receiver;
},{"util":2,"wildemitter":4}],10:[function(require,module,exports){
var _ = require('underscore');
var util = require('util');
var webrtc = require('webrtcsupport');
var SJJ = require('sdp-jingle-json');
var WildEmitter = require('wildemitter');
var peerconn = require('traceablepeerconnection');
function PeerConnection(config, constraints) {
var self = this;
var item;
WildEmitter.call(this);
config = config || {};
config.iceServers = config.iceServers || [];
// make sure this only gets enabled in Google Chrome
// EXPERIMENTAL FLAG, might get removed without notice
this.enableChromeNativeSimulcast = false;
if (constraints && constraints.optional &&
webrtc.prefix === 'webkit' &&
navigator.appVersion.match(/Chromium\//) === null) {
constraints.optional.forEach(function (constraint, idx) {
if (constraint.enableChromeNativeSimulcast) {
self.enableChromeNativeSimulcast = true;
}
});
}
// EXPERIMENTAL FLAG, might get removed without notice
this.enableMultiStreamHacks = false;
if (constraints && constraints.optional) {
constraints.optional.forEach(function (constraint, idx) {
if (constraint.enableMultiStreamHacks) {
self.enableMultiStreamHacks = true;
}
});
}
// EXPERIMENTAL FLAG, might get removed without notice
this.restrictBandwidth = 0;
if (constraints && constraints.optional) {
constraints.optional.forEach(function (constraint, idx) {
if (constraint.andyetRestrictBandwidth) {
self.restrictBandwidth = constraint.andyetRestrictBandwidth;
}
});
}
// EXPERIMENTAL FLAG, might get removed without notice
// bundle up ice candidates, only works for jingle mode
// number > 0 is the delay to wait for additional candidates
// ~20ms seems good
this.batchIceCandidates = 0;
if (constraints && constraints.optional) {
constraints.optional.forEach(function (constraint, idx) {
if (constraint.andyetBatchIce) {
self.batchIceCandidates = constraint.andyetBatchIce;
}
});
}
this.batchedIceCandidates = [];
// EXPERIMENTAL FLAG, might get removed without notice
this.assumeSetLocalSuccess = false;
if (constraints && constraints.optional) {
constraints.optional.forEach(function (constraint, idx) {
if (constraint.andyetAssumeSetLocalSuccess) {
self.assumeSetLocalSuccess = constraint.andyetAssumeSetLocalSuccess;
}
});
}
this.pc = new peerconn(config, constraints);
this.getLocalStreams = this.pc.getLocalStreams.bind(this.pc);
this.getRemoteStreams = this.pc.getRemoteStreams.bind(this.pc);
this.addStream = this.pc.addStream.bind(this.pc);
this.removeStream = this.pc.removeStream.bind(this.pc);
// proxy events
this.pc.on('*', function () {
self.emit.apply(self, arguments);
});
// proxy some events directly
this.pc.onremovestream = this.emit.bind(this, 'removeStream');
this.pc.onaddstream = this.emit.bind(this, 'addStream');
this.pc.onnegotiationneeded = this.emit.bind(this, 'negotiationNeeded');
this.pc.oniceconnectionstatechange = this.emit.bind(this, 'iceConnectionStateChange');
this.pc.onsignalingstatechange = this.emit.bind(this, 'signalingStateChange');
// handle ice candidate and data channel events
this.pc.onicecandidate = this._onIce.bind(this);
this.pc.ondatachannel = this._onDataChannel.bind(this);
this.localDescription = {
contents: []
};
this.remoteDescription = {
contents: []
};
this.config = {
debug: false,
ice: {},
sid: '',
isInitiator: true,
sdpSessionID: Date.now(),
useJingle: false
};
// apply our config
for (item in config) {
this.config[item] = config[item];
}
if (this.config.debug) {
this.on('*', function (eventName, event) {
var logger = config.logger || console;
logger.log('PeerConnection event:', arguments);
});
}
this.hadLocalStunCandidate = false;
this.hadRemoteStunCandidate = false;
this.hadLocalRelayCandidate = false;
this.hadRemoteRelayCandidate = false;
this.hadLocalIPv6Candidate = false;
this.hadRemoteIPv6Candidate = false;
// keeping references for all our data channels
// so they dont get garbage collected
// can be removed once the following bugs have been fixed
// https://crbug.com/405545
// https://bugzilla.mozilla.org/show_bug.cgi?id=964092
// to be filed for opera
this._remoteDataChannels = [];
this._localDataChannels = [];
}
util.inherits(PeerConnection, WildEmitter);
Object.defineProperty(PeerConnection.prototype, 'signalingState', {
get: function () {
return this.pc.signalingState;
}
});
Object.defineProperty(PeerConnection.prototype, 'iceConnectionState', {
get: function () {
return this.pc.iceConnectionState;
}
});
PeerConnection.prototype._role = function () {
return this.isInitiator ? 'initiator' : 'responder';
};
// Add a stream to the peer connection object
PeerConnection.prototype.addStream = function (stream) {
this.localStream = stream;
this.pc.addStream(stream);
};
// helper function to check if a remote candidate is a stun/relay
// candidate or an ipv6 candidate
PeerConnection.prototype._checkLocalCandidate = function (candidate) {
var cand = SJJ.toCandidateJSON(candidate);
if (cand.type == 'srflx') {
this.hadLocalStunCandidate = true;
} else if (cand.type == 'relay') {
this.hadLocalRelayCandidate = true;
}
if (cand.ip.indexOf(':') != -1) {
this.hadLocalIPv6Candidate = true;
}
};
// helper function to check if a remote candidate is a stun/relay
// candidate or an ipv6 candidate
PeerConnection.prototype._checkRemoteCandidate = function (candidate) {
var cand = SJJ.toCandidateJSON(candidate);
if (cand.type == 'srflx') {
this.hadRemoteStunCandidate = true;
} else if (cand.type == 'relay') {
this.hadRemoteRelayCandidate = true;
}
if (cand.ip.indexOf(':') != -1) {
this.hadRemoteIPv6Candidate = true;
}
};
// Init and add ice candidate object with correct constructor
PeerConnection.prototype.processIce = function (update, cb) {
cb = cb || function () {};
var self = this;
// ignore any added ice candidates to avoid errors. why does the
// spec not do this?
if (this.pc.signalingState === 'closed') return cb();
if (update.contents || (update.jingle && update.jingle.contents)) {
var contentNames = _.pluck(this.remoteDescription.contents, 'name');
var contents = update.contents || update.jingle.contents;
contents.forEach(function (content) {
var transport = content.transport || {};
var candidates = transport.candidates || [];
var mline = contentNames.indexOf(content.name);
var mid = content.name;
candidates.forEach(
function (candidate) {
var iceCandidate = SJJ.toCandidateSDP(candidate) + '\r\n';
self.pc.addIceCandidate(
new webrtc.IceCandidate({
candidate: iceCandidate,
sdpMLineIndex: mline,
sdpMid: mid
}), function () {
// well, this success callback is pretty meaningless
},
function (err) {
self.emit('error', err);
}
);
self._checkRemoteCandidate(iceCandidate);
});
});
} else {
// working around https://code.google.com/p/webrtc/issues/detail?id=3669
if (update.candidate && update.candidate.candidate.indexOf('a=') !== 0) {
update.candidate.candidate = 'a=' + update.candidate.candidate;
}
self.pc.addIceCandidate(
new webrtc.IceCandidate(update.candidate),
function () { },
function (err) {
self.emit('error', err);
}
);
self._checkRemoteCandidate(update.candidate.candidate);
}
cb();
};
// Generate and emit an offer with the given constraints
PeerConnection.prototype.offer = function (constraints, cb) {
var self = this;
var hasConstraints = arguments.length === 2;
var mediaConstraints = hasConstraints ? constraints : {
mandatory: {
OfferToReceiveAudio: true,
OfferToReceiveVideo: true
}
};
cb = hasConstraints ? cb : constraints;
cb = cb || function () {};
if (this.pc.signalingState === 'closed') return cb('Already closed');
// Actually generate the offer
this.pc.createOffer(
function (offer) {
// does not work for jingle, but jingle.js doesn't need
// this hack...
if (self.assumeSetLocalSuccess) {
self.emit('offer', offer);
cb(null, offer);
}
self.pc.setLocalDescription(offer,
function () {
var jingle;
var expandedOffer = {
type: 'offer',
sdp: offer.sdp
};
if (self.config.useJingle) {
jingle = SJJ.toSessionJSON(offer.sdp, {
role: self._role(),
direction: 'outgoing'
});
jingle.sid = self.config.sid;
self.localDescription = jingle;
// Save ICE credentials
_.each(jingle.contents, function (content) {
var transport = content.transport || {};
if (transport.ufrag) {
self.config.ice[content.name] = {
ufrag: transport.ufrag,
pwd: transport.pwd
};
}
});
expandedOffer.jingle = jingle;
}
expandedOffer.sdp.split('\r\n').forEach(function (line) {
if (line.indexOf('a=candidate:') === 0) {
self._checkLocalCandidate(line);
}
});
if (!self.assumeSetLocalSuccess) {
self.emit('offer', expandedOffer);
cb(null, expandedOffer);
}
},
function (err) {
self.emit('error', err);
cb(err);
}
);
},
function (err) {
self.emit('error', err);
cb(err);
},
mediaConstraints
);
};
// Process an incoming offer so that ICE may proceed before deciding
// to answer the request.
PeerConnection.prototype.handleOffer = function (offer, cb) {
cb = cb || function () {};
var self = this;
offer.type = 'offer';
if (offer.jingle) {
if (this.enableChromeNativeSimulcast) {
offer.jingle.contents.forEach(function (content) {
if (content.name === 'video') {
content.description.googConferenceFlag = true;
}
});
}
/*
if (this.enableMultiStreamHacks) {
// add a mixed video stream as first stream
offer.jingle.contents.forEach(function (content) {
if (content.name === 'video') {
var sources = content.description.sources || [];
if (sources.length === 0 || sources[0].ssrc !== "3735928559") {
sources.unshift({
ssrc: "3735928559", // 0xdeadbeef
parameters: [
{
key: "cname",
value: "deadbeef"
},
{
key: "msid",
value: "mixyourfecintothis please"
}
]
});
content.description.sources = sources;
}
}
});
}
*/
if (self.restrictBandwidth > 0) {
offer.jingle = SJJ.toSessionJSON(offer.sdp, {
role: self._role(),
direction: 'incoming'
});
if (offer.jingle.contents.length >= 2 && offer.jingle.contents[1].name === 'video') {
var content = offer.jingle.contents[1];
var hasBw = content.description && content.description.bandwidth;
if (!hasBw) {
offer.jingle.contents[1].description.bandwidth = { type:'AS', bandwidth: self.restrictBandwidth.toString() };
offer.sdp = SJJ.toSessionSDP(offer.jingle, {
sid: self.config.sdpSessionID,
role: self._role(),
direction: 'outgoing'
});
}
}
}
offer.sdp = SJJ.toSessionSDP(offer.jingle, {
sid: self.config.sdpSessionID,
role: self._role(),
direction: 'incoming'
});
self.remoteDescription = offer.jingle;
}
offer.sdp.split('\r\n').forEach(function (line) {
if (line.indexOf('a=candidate:') === 0) {
self._checkRemoteCandidate(line);
}
});
self.pc.setRemoteDescription(new webrtc.SessionDescription(offer),
function () {
cb();
},
cb
);
};
// Answer an offer with audio only
PeerConnection.prototype.answerAudioOnly = function (cb) {
var mediaConstraints = {
mandatory: {
OfferToReceiveAudio: true,
OfferToReceiveVideo: false
}
};
this._answer(mediaConstraints, cb);
};
// Answer an offer without offering to recieve
PeerConnection.prototype.answerBroadcastOnly = function (cb) {
var mediaConstraints = {
mandatory: {
OfferToReceiveAudio: false,
OfferToReceiveVideo: false
}
};
this._answer(mediaConstraints, cb);
};
// Answer an offer with given constraints default is audio/video
PeerConnection.prototype.answer = function (constraints, cb) {
var self = this;
var hasConstraints = arguments.length === 2;
var callback = hasConstraints ? cb : constraints;
var mediaConstraints = hasConstraints ? constraints : {
mandatory: {
OfferToReceiveAudio: true,
OfferToReceiveVideo: true
}
};
this._answer(mediaConstraints, callback);
};
// Process an answer
PeerConnection.prototype.handleAnswer = function (answer, cb) {
cb = cb || function () {};
var self = this;
if (answer.jingle) {
answer.sdp = SJJ.toSessionSDP(answer.jingle, {
sid: self.config.sdpSessionID,
role: self._role(),
direction: 'incoming'
});
self.remoteDescription = answer.jingle;
}
answer.sdp.split('\r\n').forEach(function (line) {
if (line.indexOf('a=candidate:') === 0) {
self._checkRemoteCandidate(line);
}
});
self.pc.setRemoteDescription(
new webrtc.SessionDescription(answer),
function () {
cb(null);
},
cb
);
};
// Close the peer connection
PeerConnection.prototype.close = function () {
this.pc.close();
this._localDataChannels = [];
this._remoteDataChannels = [];
this.emit('close');
};
// Internal code sharing for various types of answer methods
PeerConnection.prototype._answer = function (constraints, cb) {
cb = cb || function () {};
var self = this;
if (!this.pc.remoteDescription) {
// the old API is used, call handleOffer
throw new Error('remoteDescription not set');
}
if (this.pc.signalingState === 'closed') return cb('Already closed');
self.pc.createAnswer(
function (answer) {
var sim = [];
var rtx = [];
if (self.enableChromeNativeSimulcast) {
// native simulcast part 1: add another SSRC
answer.jingle = SJJ.toSessionJSON(answer.sdp, {
role: self._role(),
direction: 'outgoing'
});
if (answer.jingle.contents.length >= 2 && answer.jingle.contents[1].name === 'video') {
var hasSimgroup = false;
var groups = answer.jingle.contents[1].description.sourceGroups || [];
var hasSim = false;
groups.forEach(function (group) {
if (group.semantics == 'SIM') hasSim = true;
});
if (!hasSim &&
answer.jingle.contents[1].description.sources.length) {
var newssrc = JSON.parse(JSON.stringify(answer.jingle.contents[1].description.sources[0]));
newssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts
answer.jingle.contents[1].description.sources.push(newssrc);
sim.push(answer.jingle.contents[1].description.sources[0].ssrc);
sim.push(newssrc.ssrc);
groups.push({
semantics: 'SIM',
sources: sim
});
// also create an RTX one for the SIM one
var rtxssrc = JSON.parse(JSON.stringify(newssrc));
rtxssrc.ssrc = '' + Math.floor(Math.random() * 0xffffffff); // FIXME: look for conflicts
answer.jingle.contents[1].description.sources.push(rtxssrc);
groups.push({
semantics: 'FID',
sources: [newssrc.ssrc, rtxssrc.ssrc]
});
answer.jingle.contents[1].description.sourceGroups = groups;
answer.sdp = SJJ.toSessionSDP(answer.jingle, {
sid: self.config.sdpSessionID,
role: self._role(),
direction: 'outgoing'
});
}
}
}
if (self.assumeSetLocalSuccess) {
// not safe to do when doing simulcast mangling
self.emit('answer', answer);
cb(null, answer);
}
self.pc.setLocalDescription(answer,
function () {
var expandedAnswer = {
type: 'answer',
sdp: answer.sdp
};
if (self.config.useJingle) {
var jingle = SJJ.toSessionJSON(answer.sdp, {
role: self._role(),
direction: 'outgoing'
});
jingle.sid = self.config.sid;
self.localDescription = jingle;
expandedAnswer.jingle = jingle;
}
if (self.enableChromeNativeSimulcast) {
// native simulcast part 2:
// signal multiple tracks to the receiver
// for anything in the SIM group
if (!expandedAnswer.jingle) {
expandedAnswer.jingle = SJJ.toSessionJSON(answer.sdp, {
role: self._role(),
direction: 'outgoing'
});
}
var groups = expandedAnswer.jingle.contents[1].description.sourceGroups || [];
expandedAnswer.jingle.contents[1].description.sources.forEach(function (source, idx) {
// the floor idx/2 is a hack that relies on a particular order
// of groups, alternating between sim and rtx
source.parameters = source.parameters.map(function (parameter) {
if (parameter.key === 'msid') {
parameter.value += '-' + Math.floor(idx / 2);
}
return parameter;
});
});
expandedAnswer.sdp = SJJ.toSessionSDP(expandedAnswer.jingle, {
sid: self.sdpSessionID,
role: self._role(),
direction: 'outgoing'
});
}
expandedAnswer.sdp.split('\r\n').forEach(function (line) {
if (line.indexOf('a=candidate:') === 0) {
self._checkLocalCandidate(line);
}
});
if (!self.assumeSetLocalSuccess) {
self.emit('answer', expandedAnswer);
cb(null, expandedAnswer);
}
},
function (err) {
self.emit('error', err);
cb(err);
}
);
},
function (err) {
self.emit('error', err);
cb(err);
},
constraints
);
};
// Internal method for emitting ice candidates on our peer object
PeerConnection.prototype._onIce = function (event) {
var self = this;
if (event.candidate) {
var ice = event.candidate;
var expandedCandidate = {
candidate: event.candidate
};
this._checkLocalCandidate(ice.candidate);
var cand = SJJ.toCandidateJSON(ice.candidate);
if (self.config.useJingle) {
if (!ice.sdpMid) { // firefox doesn't set this
ice.sdpMid = self.localDescription.contents[ice.sdpMLineIndex].name;
}
if (!self.config.ice[ice.sdpMid]) {
var jingle = SJJ.toSessionJSON(self.pc.localDescription.sdp, {
role: self._role(),
direction: 'outgoing'
});
_.each(jingle.contents, function (content) {
var transport = content.transport || {};
if (transport.ufrag) {
self.config.ice[content.name] = {
ufrag: transport.ufrag,
pwd: transport.pwd
};
}
});
}
expandedCandidate.jingle = {
contents: [{
name: ice.sdpMid,
creator: self._role(),
transport: {
transType: 'iceUdp',
ufrag: self.config.ice[ice.sdpMid].ufrag,
pwd: self.config.ice[ice.sdpMid].pwd,
candidates: [
cand
]
}
}]
};
if (self.batchIceCandidates > 0) {
if (self.batchedIceCandidates.length === 0) {
window.setTimeout(function () {
var contents = {};
self.batchedIceCandidates.forEach(function (content) {
content = content.contents[0];
if (!contents[content.name]) contents[content.name] = content;
contents[content.name].transport.candidates.push(content.transport.candidates[0]);
});
var newCand = {
jingle: {
contents: []
}
};
Object.keys(contents).forEach(function (name) {
newCand.jingle.contents.push(contents[name]);
});
self.batchedIceCandidates = [];
self.emit('ice', newCand);
}, self.batchIceCandidates);
}
self.batchedIceCandidates.push(expandedCandidate.jingle);
return;
}
}
this.emit('ice', expandedCandidate);
} else {
this.emit('endOfCandidates');
}
};
// Internal method for processing a new data channel being added by the
// other peer.
PeerConnection.prototype._onDataChannel = function (event) {
// make sure we keep a reference so this doesn't get garbage collected
var channel = event.channel;
this._remoteDataChannels.push(channel);
this.emit('addChannel', channel);
};
// Create a data channel spec reference:
// http://dev.w3.org/2011/webrtc/editor/webrtc.html#idl-def-RTCDataChannelInit
PeerConnection.prototype.createDataChannel = function (name, opts) {
var channel = this.pc.createDataChannel(name, opts);
// make sure we keep a reference so this doesn't get garbage collected
this._localDataChannels.push(channel);
return channel;
};
// a wrapper around getStats which hides the differences (where possible)
PeerConnection.prototype.getStats = function (cb) {
if (webrtc.prefix === 'moz') {
this.pc.getStats(
function (res) {
var items = [];
for (var result in res) {
if (typeof res[result] === 'object') {
items.push(res[result]);
}
}
cb(null, items);
},
cb
);
} else {
this.pc.getStats(function (res) {
var items = [];
res.result().forEach(function (result) {
var item = {};
result.names().forEach(function (name) {
item[name] = result.stat(name);
});
item.id = result.id;
item.type = result.type;
item.timestamp = result.timestamp;
items.push(item);
});
cb(null, items);
});
}
};
module.exports = PeerConnection;
},{"sdp-jingle-json":17,"traceablepeerconnection":18,"underscore":16,"util":2,"webrtcsupport":5,"wildemitter":4}],17:[function(require,module,exports){
var toSDP = require('./lib/tosdp');
var toJSON = require('./lib/tojson');
// Converstion from JSON to SDP
exports.toIncomingSDPOffer = function (session) {
return toSDP.toSessionSDP(session, {
role: 'responder',
direction: 'incoming'
});
};
exports.toOutgoingSDPOffer = function (session) {
return toSDP.toSessionSDP(session, {
role: 'initiator',
direction: 'outgoing'
});
};
exports.toIncomingSDPAnswer = function (session) {
return toSDP.toSessionSDP(session, {
role: 'initiator',
direction: 'incoming'
});
};
exports.toOutgoingSDPAnswer = function (session) {
return toSDP.toSessionSDP(session, {
role: 'responder',
direction: 'outgoing'
});
};
exports.toIncomingMediaSDPOffer = function (media) {
return toSDP.toMediaSDP(media, {
role: 'responder',
direction: 'incoming'
});
};
exports.toOutgoingMediaSDPOffer = function (media) {
return toSDP.toMediaSDP(media, {
role: 'initiator',
direction: 'outgoing'
});
};
exports.toIncomingMediaSDPAnswer = function (media) {
return toSDP.toMediaSDP(media, {
role: 'initiator',
direction: 'incoming'
});
};
exports.toOutgoingMediaSDPAnswer = function (media) {
return toSDP.toMediaSDP(media, {
role: 'responder',
direction: 'outgoing'
});
};
exports.toCandidateSDP = toSDP.toCandidateSDP;
exports.toMediaSDP = toSDP.toMediaSDP;
exports.toSessionSDP = toSDP.toSessionSDP;
// Conversion from SDP to JSON
exports.toIncomingJSONOffer = function (sdp, creators) {
return toJSON.toSessionJSON(sdp, {
role: 'responder',
direction: 'incoming',
creators: creators
});
};
exports.toOutgoingJSONOffer = function (sdp, creators) {
return toJSON.toSessionJSON(sdp, {
role: 'initiator',
direction: 'outgoing',
creators: creators
});
};
exports.toIncomingJSONAnswer = function (sdp, creators) {
return toJSON.toSessionJSON(sdp, {
role: 'initiator',
direction: 'incoming',
creators: creators
});
};
exports.toOutgoingJSONAnswer = function (sdp, creators) {
return toJSON.toSessionJSON(sdp, {
role: 'responder',
direction: 'outgoing',
creators: creators
});
};
exports.toIncomingMediaJSONOffer = function (sdp, creator) {
return toJSON.toMediaJSON(sdp, {
role: 'responder',
direction: 'incoming',
creator: creator
});
};
exports.toOutgoingMediaJSONOffer = function (sdp, creator) {
return toJSON.toMediaJSON(sdp, {
role: 'initiator',
direction: 'outgoing',
creator: creator
});
};
exports.toIncomingMediaJSONAnswer = function (sdp, creator) {
return toJSON.toMediaJSON(sdp, {
role: 'initiator',
direction: 'incoming',
creator: creator
});
};
exports.toOutgoingMediaJSONAnswer = function (sdp, creator) {
return toJSON.toMediaJSON(sdp, {
role: 'responder',
direction: 'outgoing',
creator: creator
});
};
exports.toCandidateJSON = toJSON.toCandidateJSON;
exports.toMediaJSON = toJSON.toMediaJSON;
exports.toSessionJSON = toJSON.toSessionJSON;
},{"./lib/tojson":19,"./lib/tosdp":20}],14:[function(require,module,exports){
// getScreenMedia helper by @HenrikJoreteg
var getUserMedia = require('getusermedia');
// cache for constraints and callback
var cache = {};
module.exports = function (constraints, cb) {
var hasConstraints = arguments.length === 2;
var callback = hasConstraints ? cb : constraints;
var error;
if (typeof window === 'undefined' || window.location.protocol === 'http:') {
error = new Error('NavigatorUserMediaError');
error.name = 'HTTPS_REQUIRED';
return callback(error);
}
if (window.navigator.userAgent.match('Chrome')) {
var chromever = parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10);
var maxver = 33;
var isCef = !window.chrome.webstore;
// "known" crash in chrome 34 and 35 on linux
if (window.navigator.userAgent.match('Linux')) maxver = 35;
if (isCef || (chromever >= 26 && chromever <= maxver)) {
// chrome 26 - chrome 33 way to do it -- requires bad chrome://flags
// note: this is basically in maintenance mode and will go away soon
constraints = (hasConstraints && constraints) || {
video: {
mandatory: {
googLeakyBucket: true,
maxWidth: window.screen.width,
maxHeight: window.screen.height,
maxFrameRate: 3,
chromeMediaSource: 'screen'
}
}
};
getUserMedia(constraints, callback);
} else {
// chrome 34+ way requiring an extension
var pending = window.setTimeout(function () {
error = new Error('NavigatorUserMediaError');
error.name = 'EXTENSION_UNAVAILABLE';
return callback(error);
}, 1000);
cache[pending] = [callback, hasConstraints ? constraint : null];
window.postMessage({ type: 'getScreen', id: pending }, '*');
}
} else if (window.navigator.userAgent.match('Firefox')) {
var ffver = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10);
if (ffver >= 33) {
constraints = (hasConstraints && constraints) || {
video: {
mozMediaSource: 'window',
mediaSource: 'window'
}
}
getUserMedia(constraints, function (err, stream) {
callback(err, stream);
// workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1045810
if (!err) {
var lastTime = stream.currentTime;
var polly = window.setInterval(function () {
if (!stream) window.clearInterval(polly);
if (stream.currentTime == lastTime) {
window.clearInterval(polly);
if (stream.onended) {
stream.onended();
}
}
lastTime = stream.currentTime;
}, 500);
}
});
} else {
error = new Error('NavigatorUserMediaError');
error.name = 'EXTENSION_UNAVAILABLE'; // does not make much sense but...
}
}
};
window.addEventListener('message', function (event) {
if (event.origin != window.location.origin) {
return;
}
if (event.data.type == 'gotScreen' && cache[event.data.id]) {
var data = cache[event.data.id];
var constraints = data[1];
var callback = data[0];
delete cache[event.data.id];
if (event.data.sourceId === '') { // user canceled
var error = new Error('NavigatorUserMediaError');
error.name = 'PERMISSION_DENIED';
callback(error);
} else {
constraints = constraints || {audio: false, video: {
mandatory: {
chromeMediaSource: 'desktop',
maxWidth: window.screen.width,
maxHeight: window.screen.height,
maxFrameRate: 3
},
optional: [
{googLeakyBucket: true},
{googTemporalLayeredScreencast: true}
]
}};
constraints.video.mandatory.chromeMediaSourceId = event.data.sourceId;
getUserMedia(constraints, callback);
}
} else if (event.data.type == 'getScreenPending') {
window.clearTimeout(event.data.id);
}
});
},{"getusermedia":12}],13:[function(require,module,exports){
var WildEmitter = require('wildemitter');
function getMaxVolume (analyser, fftBins) {
var maxVolume = -Infinity;
analyser.getFloatFrequencyData(fftBins);
for(var i=4, ii=fftBins.length; i < ii; i++) {
if (fftBins[i] > maxVolume && fftBins[i] < 0) {
maxVolume = fftBins[i];
}
};
return maxVolume;
}
var audioContextType = window.AudioContext || window.webkitAudioContext;
// use a single audio context due to hardware limits
var audioContext = null;
module.exports = function(stream, options) {
var harker = new WildEmitter();
// make it not break in non-supported browsers
if (!audioContextType) return harker;
//Config
var options = options || {},
smoothing = (options.smoothing || 0.1),
interval = (options.interval || 50),
threshold = options.threshold,
play = options.play,
history = options.history || 10,
running = true;
//Setup Audio Context
if (!audioContext) {
audioContext = new audioContextType();
}
var sourceNode, fftBins, analyser;
analyser = audioContext.createAnalyser();
analyser.fftSize = 512;
analyser.smoothingTimeConstant = smoothing;
fftBins = new Float32Array(analyser.fftSize);
if (stream.jquery) stream = stream[0];
if (stream instanceof HTMLAudioElement || stream instanceof HTMLVideoElement) {
//Audio Tag
sourceNode = audioContext.createMediaElementSource(stream);
if (typeof play === 'undefined') play = true;
threshold = threshold || -50;
} else {
//WebRTC Stream
sourceNode = audioContext.createMediaStreamSource(stream);
threshold = threshold || -50;
}
sourceNode.connect(analyser);
if (play) analyser.connect(audioContext.destination);
harker.speaking = false;
harker.setThreshold = function(t) {
threshold = t;
};
harker.setInterval = function(i) {
interval = i;
};
harker.stop = function() {
running = false;
harker.emit('volume_change', -100, threshold);
if (harker.speaking) {
harker.speaking = false;
harker.emit('stopped_speaking');
}
};
harker.speakingHistory = [];
for (var i = 0; i < history; i++) {
harker.speakingHistory.push(0);
}
// Poll the analyser node to determine if speaking
// and emit events if changed
var looper = function() {
setTimeout(function() {
//check if stop has been called
if(!running) {
return;
}
var currentVolume = getMaxVolume(analyser, fftBins);
harker.emit('volume_change', currentVolume, threshold);
var history = 0;
if (currentVolume > threshold && !harker.speaking) {
// trigger quickly, short history
for (var i = harker.speakingHistory.length - 3; i < harker.speakingHistory.length; i++) {
history += harker.speakingHistory[i];
}
if (history >= 2) {
harker.speaking = true;
harker.emit('speaking');
}
} else if (currentVolume < threshold && harker.speaking) {
for (var i = 0; i < harker.speakingHistory.length; i++) {
history += harker.speakingHistory[i];
}
if (history == 0) {
harker.speaking = false;
harker.emit('stopped_speaking');
}
}
harker.speakingHistory.shift();
harker.speakingHistory.push(0 + (currentVolume > threshold));
looper();
}, interval);
};
looper();
return harker;
}
},{"wildemitter":4}],15:[function(require,module,exports){
var support = require('webrtcsupport');
function GainController(stream) {
this.support = support.webAudio && support.mediaStream;
// set our starting value
this.gain = 1;
if (this.support) {
var context = this.context = new support.AudioContext();
this.microphone = context.createMediaStreamSource(stream);
this.gainFilter = context.createGain();
this.destination = context.createMediaStreamDestination();
this.outputStream = this.destination.stream;
this.microphone.connect(this.gainFilter);
this.gainFilter.connect(this.destination);
stream.addTrack(this.outputStream.getAudioTracks()[0]);
stream.removeTrack(stream.getAudioTracks()[0]);
}
this.stream = stream;
}
// setting
GainController.prototype.setGain = function (val) {
// check for support
if (!this.support) return;
this.gainFilter.gain.value = val;
this.gain = val;
};
GainController.prototype.getGain = function () {
return this.gain;
};
GainController.prototype.off = function () {
return this.setGain(0);
};
GainController.prototype.on = function () {
this.setGain(1);
};
module.exports = GainController;
},{"webrtcsupport":5}],20:[function(require,module,exports){
var SENDERS = require('./senders');
exports.toSessionSDP = function (session, opts) {
var role = opts.role || 'initiator';
var direction = opts.direction || 'outgoing';
var sid = opts.sid || session.sid || Date.now();
var time = opts.time || Date.now();
var sdp = [
'v=0',
'o=- ' + sid + ' ' + time + ' IN IP4 0.0.0.0',
's=-',
't=0 0'
];
var groups = session.groups || [];
groups.forEach(function (group) {
sdp.push('a=group:' + group.semantics + ' ' + group.contents.join(' '));
});
var contents = session.contents || [];
contents.forEach(function (content) {
sdp.push(exports.toMediaSDP(content, opts));
});
return sdp.join('\r\n') + '\r\n';
};
exports.toMediaSDP = function (content, opts) {
var sdp = [];
var role = opts.role || 'initiator';
var direction = opts.direction || 'outgoing';
var desc = content.description;
var transport = content.transport;
var payloads = desc.payloads || [];
var fingerprints = (transport && transport.fingerprints) || [];
var mline = [];
if (desc.descType == 'datachannel') {
mline.push('application');
mline.push('1');
mline.push('DTLS/SCTP');
if (transport.sctp) {
transport.sctp.forEach(function (map) {
mline.push(map.number);
});
}
} else {
mline.push(desc.media);
mline.push('1');
if ((desc.encryption && desc.encryption.length > 0) || (fingerprints.length > 0)) {
mline.push('RTP/SAVPF');
} else {
mline.push('RTP/AVPF');
}
payloads.forEach(function (payload) {
mline.push(payload.id);
});
}
sdp.push('m=' + mline.join(' '));
sdp.push('c=IN IP4 0.0.0.0');
if (desc.bandwidth && desc.bandwidth.type && desc.bandwidth.bandwidth) {
sdp.push('b=' + desc.bandwidth.type + ':' + desc.bandwidth.bandwidth);
}
if (desc.descType == 'rtp') {
sdp.push('a=rtcp:1 IN IP4 0.0.0.0');
}
if (transport) {
if (transport.ufrag) {
sdp.push('a=ice-ufrag:' + transport.ufrag);
}
if (transport.pwd) {
sdp.push('a=ice-pwd:' + transport.pwd);
}
var pushedSetup = false;
fingerprints.forEach(function (fingerprint) {
sdp.push('a=fingerprint:' + fingerprint.hash + ' ' + fingerprint.value);
if (fingerprint.setup && !pushedSetup) {
sdp.push('a=setup:' + fingerprint.setup);
}
});
if (transport.sctp) {
transport.sctp.forEach(function (map) {
sdp.push('a=sctpmap:' + map.number + ' ' + map.protocol + ' ' + map.streams);
});
}
}
if (desc.descType == 'rtp') {
sdp.push('a=' + (SENDERS[role][direction][content.senders] || 'sendrecv'));
}
sdp.push('a=mid:' + content.name);
if (desc.mux) {
sdp.push('a=rtcp-mux');
}
var encryption = desc.encryption || [];
encryption.forEach(function (crypto) {
sdp.push('a=crypto:' + crypto.tag + ' ' + crypto.cipherSuite + ' ' + crypto.keyParams + (crypto.sessionParams ? ' ' + crypto.sessionParams : ''));
});
if (desc.googConferenceFlag) {
sdp.push('a=x-google-flag:conference');
}
payloads.forEach(function (payload) {
var rtpmap = 'a=rtpmap:' + payload.id + ' ' + payload.name + '/' + payload.clockrate;
if (payload.channels && payload.channels != '1') {
rtpmap += '/' + payload.channels;
}
sdp.push(rtpmap);
if (payload.parameters && payload.parameters.length) {
var fmtp = ['a=fmtp:' + payload.id];
var parameters = [];
payload.parameters.forEach(function (param) {
parameters.push((param.key ? param.key + '=' : '') + param.value);
});
fmtp.push(parameters.join(';'));
sdp.push(fmtp.join(' '));
}
if (payload.feedback) {
payload.feedback.forEach(function (fb) {
if (fb.type === 'trr-int') {
sdp.push('a=rtcp-fb:' + payload.id + ' trr-int ' + (fb.value ? fb.value : '0'));
} else {
sdp.push('a=rtcp-fb:' + payload.id + ' ' + fb.type + (fb.subtype ? ' ' + fb.subtype : ''));
}
});
}
});
if (desc.feedback) {
desc.feedback.forEach(function (fb) {
if (fb.type === 'trr-int') {
sdp.push('a=rtcp-fb:* trr-int ' + (fb.value ? fb.value : '0'));
} else {
sdp.push('a=rtcp-fb:* ' + fb.type + (fb.subtype ? ' ' + fb.subtype : ''));
}
});
}
var hdrExts = desc.headerExtensions || [];
hdrExts.forEach(function (hdr) {
sdp.push('a=extmap:' + hdr.id + (hdr.senders ? '/' + SENDERS[role][direction][hdr.senders] : '') + ' ' + hdr.uri);
});
var ssrcGroups = desc.sourceGroups || [];
ssrcGroups.forEach(function (ssrcGroup) {
sdp.push('a=ssrc-group:' + ssrcGroup.semantics + ' ' + ssrcGroup.sources.join(' '));
});
var ssrcs = desc.sources || [];
ssrcs.forEach(function (ssrc) {
for (var i = 0; i < ssrc.parameters.length; i++) {
var param = ssrc.parameters[i];
sdp.push('a=ssrc:' + (ssrc.ssrc || desc.ssrc) + ' ' + param.key + (param.value ? (':' + param.value) : ''));
}
});
var candidates = transport.candidates || [];
candidates.forEach(function (candidate) {
sdp.push(exports.toCandidateSDP(candidate));
});
return sdp.join('\r\n');
};
exports.toCandidateSDP = function (candidate) {
var sdp = [];
sdp.push(candidate.foundation);
sdp.push(candidate.component);
sdp.push(candidate.protocol.toUpperCase());
sdp.push(candidate.priority);
sdp.push(candidate.ip);
sdp.push(candidate.port);
var type = candidate.type;
sdp.push('typ');
sdp.push(type);
if (type === 'srflx' || type === 'prflx' || type === 'relay') {
if (candidate.relAddr && candidate.relPort) {
sdp.push('raddr');
sdp.push(candidate.relAddr);
sdp.push('rport');
sdp.push(candidate.relPort);
}
}
if (candidate.tcpType && candidate.protocol.toUpperCase() == 'TCP') {
sdp.push('tcptype');
sdp.push(candidate.tcpType);
}
sdp.push('generation');
sdp.push(candidate.generation || '0');
// FIXME: apparently this is wrong per spec
// but then, we need this when actually putting this into
// SDP so it's going to stay.
// decision needs to be revisited when browsers dont
// accept this any longer
return 'a=candidate:' + sdp.join(' ');
};
},{"./senders":21}],19:[function(require,module,exports){
var SENDERS = require('./senders');
var parsers = require('./parsers');
var idCounter = Math.random();
exports._setIdCounter = function (counter) {
idCounter = counter;
};
exports.toSessionJSON = function (sdp, opts) {
var i;
var creators = opts.creators || [];
var role = opts.role || 'initiator';
var direction = opts.direction || 'outgoing';
// Divide the SDP into session and media sections.
var media = sdp.split('\r\nm=');
for (i = 1; i < media.length; i++) {
media[i] = 'm=' + media[i];
if (i !== media.length - 1) {
media[i] += '\r\n';
}
}
var session = media.shift() + '\r\n';
var sessionLines = parsers.lines(session);
var parsed = {};
var contents = [];
for (i = 0; i < media.length; i++) {
contents.push(exports.toMediaJSON(media[i], session, {
role: role,
direction: direction,
creator: creators[i] || 'initiator'
}));
}
parsed.contents = contents;
var groupLines = parsers.findLines('a=group:', sessionLines);
if (groupLines.length) {
parsed.groups = parsers.groups(groupLines);
}
return parsed;
};
exports.toMediaJSON = function (media, session, opts) {
var creator = opts.creator || 'initiator';
var role = opts.role || 'initiator';
var direction = opts.direction || 'outgoing';
var lines = parsers.lines(media);
var sessionLines = parsers.lines(session);
var mline = parsers.mline(lines[0]);
var content = {
creator: creator,
name: mline.media,
description: {
descType: 'rtp',
media: mline.media,
payloads: [],
encryption: [],
feedback: [],
headerExtensions: []
},
transport: {
transType: 'iceUdp',
candidates: [],
fingerprints: []
}
};
if (mline.media == 'application') {
// FIXME: the description is most likely to be independent
// of the SDP and should be processed by other parts of the library
content.description = {
descType: 'datachannel'
};
content.transport.sctp = [];
}
var desc = content.description;
var trans = content.transport;
// If we have a mid, use that for the content name instead.
var mid = parsers.findLine('a=mid:', lines);
if (mid) {
content.name = mid.substr(6);
}
if (parsers.findLine('a=sendrecv', lines, sessionLines)) {
content.senders = 'both';
} else if (parsers.findLine('a=sendonly', lines, sessionLines)) {
content.senders = SENDERS[role][direction].sendonly;
} else if (parsers.findLine('a=recvonly', lines, sessionLines)) {
content.senders = SENDERS[role][direction].recvonly;
} else if (parsers.findLine('a=inactive', lines, sessionLines)) {
content.senders = 'none';
}
if (desc.descType == 'rtp') {
var bandwidth = parsers.findLine('b=', lines);
if (bandwidth) {
desc.bandwidth = parsers.bandwidth(bandwidth);
}
var ssrc = parsers.findLine('a=ssrc:', lines);
if (ssrc) {
desc.ssrc = ssrc.substr(7).split(' ')[0];
}
var rtpmapLines = parsers.findLines('a=rtpmap:', lines);
rtpmapLines.forEach(function (line) {
var payload = parsers.rtpmap(line);
payload.parameters = [];
payload.feedback = [];
var fmtpLines = parsers.findLines('a=fmtp:' + payload.id, lines);
// There should only be one fmtp line per payload
fmtpLines.forEach(function (line) {
payload.parameters = parsers.fmtp(line);
});
var fbLines = parsers.findLines('a=rtcp-fb:' + payload.id, lines);
fbLines.forEach(function (line) {
payload.feedback.push(parsers.rtcpfb(line));
});
desc.payloads.push(payload);
});
var cryptoLines = parsers.findLines('a=crypto:', lines, sessionLines);
cryptoLines.forEach(function (line) {
desc.encryption.push(parsers.crypto(line));
});
if (parsers.findLine('a=rtcp-mux', lines)) {
desc.mux = true;
}
var fbLines = parsers.findLines('a=rtcp-fb:*', lines);
fbLines.forEach(function (line) {
desc.feedback.push(parsers.rtcpfb(line));
});
var extLines = parsers.findLines('a=extmap:', lines);
extLines.forEach(function (line) {
var ext = parsers.extmap(line);
ext.senders = SENDERS[role][direction][ext.senders];
desc.headerExtensions.push(ext);
});
var ssrcGroupLines = parsers.findLines('a=ssrc-group:', lines);
desc.sourceGroups = parsers.sourceGroups(ssrcGroupLines || []);
var ssrcLines = parsers.findLines('a=ssrc:', lines);
desc.sources = parsers.sources(ssrcLines || []);
if (parsers.findLine('a=x-google-flag:conference', lines, sessionLines)) {
desc.googConferenceFlag = true;
}
}
// transport specific attributes
var fingerprintLines = parsers.findLines('a=fingerprint:', lines, sessionLines);
var setup = parsers.findLine('a=setup:', lines, sessionLines);
fingerprintLines.forEach(function (line) {
var fp = parsers.fingerprint(line);
if (setup) {
fp.setup = setup.substr(8);
}
trans.fingerprints.push(fp);
});
var ufragLine = parsers.findLine('a=ice-ufrag:', lines, sessionLines);
var pwdLine = parsers.findLine('a=ice-pwd:', lines, sessionLines);
if (ufragLine && pwdLine) {
trans.ufrag = ufragLine.substr(12);
trans.pwd = pwdLine.substr(10);
trans.candidates = [];
var candidateLines = parsers.findLines('a=candidate:', lines, sessionLines);
candidateLines.forEach(function (line) {
trans.candidates.push(exports.toCandidateJSON(line));
});
}
if (desc.descType == 'datachannel') {
var sctpmapLines = parsers.findLines('a=sctpmap:', lines);
sctpmapLines.forEach(function (line) {
var sctp = parsers.sctpmap(line);
trans.sctp.push(sctp);
});
}
return content;
};
exports.toCandidateJSON = function (line) {
var candidate = parsers.candidate(line.split('\r\n')[0]);
candidate.id = (idCounter++).toString(36).substr(0, 12);
return candidate;
};
},{"./parsers":22,"./senders":21}],22:[function(require,module,exports){
exports.lines = function (sdp) {
return sdp.split('\r\n').filter(function (line) {
return line.length > 0;
});
};
exports.findLine = function (prefix, mediaLines, sessionLines) {
var prefixLength = prefix.length;
for (var i = 0; i < mediaLines.length; i++) {
if (mediaLines[i].substr(0, prefixLength) === prefix) {
return mediaLines[i];
}
}
// Continue searching in parent session section
if (!sessionLines) {
return false;
}
for (var j = 0; j < sessionLines.length; j++) {
if (sessionLines[j].substr(0, prefixLength) === prefix) {
return sessionLines[j];
}
}
return false;
};
exports.findLines = function (prefix, mediaLines, sessionLines) {
var results = [];
var prefixLength = prefix.length;
for (var i = 0; i < mediaLines.length; i++) {
if (mediaLines[i].substr(0, prefixLength) === prefix) {
results.push(mediaLines[i]);
}
}
if (results.length || !sessionLines) {
return results;
}
for (var j = 0; j < sessionLines.length; j++) {
if (sessionLines[j].substr(0, prefixLength) === prefix) {
results.push(sessionLines[j]);
}
}
return results;
};
exports.mline = function (line) {
var parts = line.substr(2).split(' ');
var parsed = {
media: parts[0],
port: parts[1],
proto: parts[2],
formats: []
};
for (var i = 3; i < parts.length; i++) {
if (parts[i]) {
parsed.formats.push(parts[i]);
}
}
return parsed;
};
exports.rtpmap = function (line) {
var parts = line.substr(9).split(' ');
var parsed = {
id: parts.shift()
};
parts = parts[0].split('/');
parsed.name = parts[0];
parsed.clockrate = parts[1];
parsed.channels = parts.length == 3 ? parts[2] : '1';
return parsed;
};
exports.sctpmap = function (line) {
// based on -05 draft
var parts = line.substr(10).split(' ');
var parsed = {
number: parts.shift(),
protocol: parts.shift(),
streams: parts.shift()
};
return parsed;
};
exports.fmtp = function (line) {
var kv, key, value;
var parts = line.substr(line.indexOf(' ') + 1).split(';');
var parsed = [];
for (var i = 0; i < parts.length; i++) {
kv = parts[i].split('=');
key = kv[0].trim();
value = kv[1];
if (key && value) {
parsed.push({key: key, value: value});
} else if (key) {
parsed.push({key: '', value: key});
}
}
return parsed;
};
exports.crypto = function (line) {
var parts = line.substr(9).split(' ');
var parsed = {
tag: parts[0],
cipherSuite: parts[1],
keyParams: parts[2],
sessionParams: parts.slice(3).join(' ')
};
return parsed;
};
exports.fingerprint = function (line) {
var parts = line.substr(14).split(' ');
return {
hash: parts[0],
value: parts[1]
};
};
exports.extmap = function (line) {
var parts = line.substr(9).split(' ');
var parsed = {};
var idpart = parts.shift();
var sp = idpart.indexOf('/');
if (sp >= 0) {
parsed.id = idpart.substr(0, sp);
parsed.senders = idpart.substr(sp + 1);
} else {
parsed.id = idpart;
parsed.senders = 'sendrecv';
}
parsed.uri = parts.shift() || '';
return parsed;
};
exports.rtcpfb = function (line) {
var parts = line.substr(10).split(' ');
var parsed = {};
parsed.id = parts.shift();
parsed.type = parts.shift();
if (parsed.type === 'trr-int') {
parsed.value = parts.shift();
} else {
parsed.subtype = parts.shift() || '';
}
parsed.parameters = parts;
return parsed;
};
exports.candidate = function (line) {
var parts;
if (line.indexOf('a=candidate:') === 0) {
parts = line.substring(12).split(' ');
} else { // no a=candidate
parts = line.substring(10).split(' ');
}
var candidate = {
foundation: parts[0],
component: parts[1],
protocol: parts[2].toLowerCase(),
priority: parts[3],
ip: parts[4],
port: parts[5],
// skip parts[6] == 'typ'
type: parts[7],
generation: '0'
};
for (var i = 8; i < parts.length; i += 2) {
if (parts[i] === 'raddr') {
candidate.relAddr = parts[i + 1];
} else if (parts[i] === 'rport') {
candidate.relPort = parts[i + 1];
} else if (parts[i] === 'generation') {
candidate.generation = parts[i + 1];
} else if (parts[i] === 'tcptype') {
candidate.tcpType = parts[i + 1];
}
}
candidate.network = '1';
return candidate;
};
exports.sourceGroups = function (lines) {
var parsed = [];
for (var i = 0; i < lines.length; i++) {
var parts = lines[i].substr(13).split(' ');
parsed.push({
semantics: parts.shift(),
sources: parts
});
}
return parsed;
};
exports.sources = function (lines) {
// http://tools.ietf.org/html/rfc5576
var parsed = [];
var sources = {};
for (var i = 0; i < lines.length; i++) {
var parts = lines[i].substr(7).split(' ');
var ssrc = parts.shift();
if (!sources[ssrc]) {
var source = {
ssrc: ssrc,
parameters: []
};
parsed.push(source);
// Keep an index
sources[ssrc] = source;
}
parts = parts.join(' ').split(':');
var attribute = parts.shift();
var value = parts.join(':') || null;
sources[ssrc].parameters.push({
key: attribute,
value: value
});
}
return parsed;
};
exports.groups = function (lines) {
// http://tools.ietf.org/html/rfc5888
var parsed = [];
var parts;
for (var i = 0; i < lines.length; i++) {
parts = lines[i].substr(8).split(' ');
parsed.push({
semantics: parts.shift(),
contents: parts
});
}
return parsed;
};
exports.bandwidth = function (line) {
var parts = line.substr(2).split(':');
var parsed = {};
parsed.type = parts.shift();
parsed.bandwidth = parts.shift();
return parsed;
};
},{}],21:[function(require,module,exports){
module.exports = {
initiator: {
incoming: {
initiator: 'recvonly',
responder: 'sendonly',
both: 'sendrecv',
none: 'inactive',
recvonly: 'initiator',
sendonly: 'responder',
sendrecv: 'both',
inactive: 'none'
},
outgoing: {
initiator: 'sendonly',
responder: 'recvonly',
both: 'sendrecv',
none: 'inactive',
recvonly: 'responder',
sendonly: 'initiator',
sendrecv: 'both',
inactive: 'none'
}
},
responder: {
incoming: {
initiator: 'sendonly',
responder: 'recvonly',
both: 'sendrecv',
none: 'inactive',
recvonly: 'responder',
sendonly: 'initiator',
sendrecv: 'both',
inactive: 'none'
},
outgoing: {
initiator: 'recvonly',
responder: 'sendonly',
both: 'sendrecv',
none: 'inactive',
recvonly: 'initiator',
sendonly: 'responder',
sendrecv: 'both',
inactive: 'none'
}
}
};
},{}],18:[function(require,module,exports){
// based on https://github.com/ESTOS/strophe.jingle/
// adds wildemitter support
var util = require('util');
var webrtc = require('webrtcsupport');
var WildEmitter = require('wildemitter');
function dumpSDP(description) {
return {
type: description.type,
sdp: description.sdp
};
}
function dumpStream(stream) {
var info = {
label: stream.id,
};
if (stream.getAudioTracks().length) {
info.audio = stream.getAudioTracks().map(function (track) {
return track.id;
});
}
if (stream.getVideoTracks().length) {
info.video = stream.getVideoTracks().map(function (track) {
return track.id;
});
}
return info;
}
function TraceablePeerConnection(config, constraints) {
var self = this;
WildEmitter.call(this);
this.peerconnection = new webrtc.PeerConnection(config, constraints);
this.trace = function (what, info) {
self.emit('PeerConnectionTrace', {
time: new Date(),
type: what,
value: info || ""
});
};
this.onicecandidate = null;
this.peerconnection.onicecandidate = function (event) {
self.trace('onicecandidate', event.candidate);
if (self.onicecandidate !== null) {
self.onicecandidate(event);
}
};
this.onaddstream = null;
this.peerconnection.onaddstream = function (event) {
self.trace('onaddstream', dumpStream(event.stream));
if (self.onaddstream !== null) {
self.onaddstream(event);
}
};
this.onremovestream = null;
this.peerconnection.onremovestream = function (event) {
self.trace('onremovestream', dumpStream(event.stream));
if (self.onremovestream !== null) {
self.onremovestream(event);
}
};
this.onsignalingstatechange = null;
this.peerconnection.onsignalingstatechange = function (event) {
self.trace('onsignalingstatechange', self.signalingState);
if (self.onsignalingstatechange !== null) {
self.onsignalingstatechange(event);
}
};
this.oniceconnectionstatechange = null;
this.peerconnection.oniceconnectionstatechange = function (event) {
self.trace('oniceconnectionstatechange', self.iceConnectionState);
if (self.oniceconnectionstatechange !== null) {
self.oniceconnectionstatechange(event);
}
};
this.onnegotiationneeded = null;
this.peerconnection.onnegotiationneeded = function (event) {
self.trace('onnegotiationneeded');
if (self.onnegotiationneeded !== null) {
self.onnegotiationneeded(event);
}
};
self.ondatachannel = null;
this.peerconnection.ondatachannel = function (event) {
self.trace('ondatachannel', event);
if (self.ondatachannel !== null) {
self.ondatachannel(event);
}
};
this.getLocalStreams = this.peerconnection.getLocalStreams.bind(this.peerconnection);
this.getRemoteStreams = this.peerconnection.getRemoteStreams.bind(this.peerconnection);
}
util.inherits(TraceablePeerConnection, WildEmitter);
Object.defineProperty(TraceablePeerConnection.prototype, 'signalingState', {
get: function () {
return this.peerconnection.signalingState;
}
});
Object.defineProperty(TraceablePeerConnection.prototype, 'iceConnectionState', {
get: function () {
return this.peerconnection.iceConnectionState;
}
});
Object.defineProperty(TraceablePeerConnection.prototype, 'localDescription', {
get: function () {
return this.peerconnection.localDescription;
}
});
Object.defineProperty(TraceablePeerConnection.prototype, 'remoteDescription', {
get: function () {
return this.peerconnection.remoteDescription;
}
});
TraceablePeerConnection.prototype.addStream = function (stream) {
this.trace('addStream', dumpStream(stream));
this.peerconnection.addStream(stream);
};
TraceablePeerConnection.prototype.removeStream = function (stream) {
this.trace('removeStream', dumpStream(stream));
this.peerconnection.removeStream(stream);
};
TraceablePeerConnection.prototype.createDataChannel = function (label, opts) {
this.trace('createDataChannel', label, opts);
return this.peerconnection.createDataChannel(label, opts);
};
TraceablePeerConnection.prototype.setLocalDescription = function (description, successCallback, failureCallback) {
var self = this;
this.trace('setLocalDescription', dumpSDP(description));
this.peerconnection.setLocalDescription(description,
function () {
self.trace('setLocalDescriptionOnSuccess');
successCallback();
},
function (err) {
self.trace('setLocalDescriptionOnFailure', err);
failureCallback(err);
}
);
};
TraceablePeerConnection.prototype.setRemoteDescription = function (description, successCallback, failureCallback) {
var self = this;
this.trace('setRemoteDescription', dumpSDP(description));
this.peerconnection.setRemoteDescription(description,
function () {
self.trace('setRemoteDescriptionOnSuccess');
successCallback();
},
function (err) {
self.trace('setRemoteDescriptionOnFailure', err);
failureCallback(err);
}
);
};
TraceablePeerConnection.prototype.close = function () {
this.trace('stop');
if (this.statsinterval !== null) {
window.clearInterval(this.statsinterval);
this.statsinterval = null;
}
if (this.peerconnection.signalingState != 'closed') {
this.peerconnection.close();
}
};
TraceablePeerConnection.prototype.createOffer = function (successCallback, failureCallback, constraints) {
var self = this;
this.trace('createOffer', constraints);
this.peerconnection.createOffer(
function (offer) {
self.trace('createOfferOnSuccess', dumpSDP(offer));
successCallback(offer);
},
function (err) {
self.trace('createOfferOnFailure', err);
failureCallback(err);
},
constraints
);
};
TraceablePeerConnection.prototype.createAnswer = function (successCallback, failureCallback, constraints) {
var self = this;
this.trace('createAnswer', constraints);
this.peerconnection.createAnswer(
function (answer) {
self.trace('createAnswerOnSuccess', dumpSDP(answer));
successCallback(answer);
},
function (err) {
self.trace('createAnswerOnFailure', err);
failureCallback(err);
},
constraints
);
};
TraceablePeerConnection.prototype.addIceCandidate = function (candidate, successCallback, failureCallback) {
var self = this;
this.trace('addIceCandidate', candidate);
this.peerconnection.addIceCandidate(candidate,
function () {
//self.trace('addIceCandidateOnSuccess');
if (successCallback) successCallback();
},
function (err) {
self.trace('addIceCandidateOnFailure', err);
if (failureCallback) failureCallback(err);
}
);
};
TraceablePeerConnection.prototype.getStats = function (callback, errback) {
if (navigator.mozGetUserMedia) {
this.peerconnection.getStats(null, callback, errback);
} else {
this.peerconnection.getStats(callback);
}
};
module.exports = TraceablePeerConnection;
},{"util":2,"webrtcsupport":5,"wildemitter":4}]},{},[1])(1)
});
;
|