connection.socketURL = 'http://yourdomain.com:8080/';

// if your server is already having "message" event
// then you can use something else, unique.
connection.socketMessageEvent = 'unique-message';

connection.socketURL = 'https://rtcmulticonnection.herokuapp.com:443/';

// node.js code
require('./Signaling-Server.js')(httpServerHandlerOrPort);

var stream = connection.streamEvents['streamid'];

// or use this code:
// backward compatibility
connection.streams = connection.streamEvents;
connection.numberOfConnectedUsers = 0;

if (Object.observe) {
    Object.observe(connection.streamEvents, function() {
        // for backward compatibility
        connection.streams = connection.streamEvents;
    });

    Object.observe(connection.peers, function() {
        // for backward compatibility
        connection.numberOfConnectedUsers = connection.getAllParticipants().length;
    });
}

# you can even use "getStreamById"
var stream = connection.attachStreams.getStreamById('streamid');

# to get remote stream by id
var allRemoteStreams = connection.getRemoteStreams('remote-user-id');
var stream = allRemoteStreams.getStreamByid('streamid');

connection.onstream = function(event) {
	if(event.stream.isScreen) {
		// screen stream
	}

	if(event.stream.isVideo) {
		// audio+video or video-only stream
	}

	if(event.stream.isAudio) {
		// audio-only stream
	}
};

var stream = connection.streamEvents['streamid'].stream;
stream.mute('audio'); // audio or video or both

var width = 1280;
var height = 720;

var supports = navigator.mediaDevices.getSupportedConstraints();

var constraints = {};
if (supports.width && supports.height) {
    constraints = {
        width: width,
        height: height
    };
}

connection.applyConstraints({
    video: constraints
});

// here is its simpler usage
connection.replaceTrack({
	screen: true,
	oneway: true
});

var videoTrack = yourVideoStream.getVideoTracks()[0];
connection.replaceTrack(videoTrack);

connection.replaceTrack(yourVideoStream);

var remoteUserId = 'single-remote-userid';

var videoTrack = yourVideoStream.getVideoTracks()[0];
connection.replaceTrack(videoTrack, remoteUserId);

connection.resetTrack(null, true);

// with single user
connection.resetTrack('specific-userid', true);

// with multiple users
connection.resetTrack(['first-user', 'second-user'], true);

// NULL means all users
connection.resetTrack(null, true);

// reset only audio
connection.resetTrack(null, false);

// to reset all last-tracks (both audio and video)
connection.resetTrack();

connection.onUserStatusChanged = function(status) {
	document.getElementById(event.userid).src = status === 'online' ? 'online.gif' : 'offline.gif';
};

connection.onopen = connection.stream = function(event) {
    connection.onUserStatusChanged({
        userid: event.userid,
        extra: event.extra,
        status: 'online'
    });
};

connection.onleave = connection.streamended = connection.onclose = function(event) {
    connection.onUserStatusChanged({
        userid: event.userid,
        extra: event.extra,
        status: 'offline'
    });
};

var socket = connection.getSocket();
socket.emit('custom-event', 'hi there');
socket.on('custom-event', function(message) {
	alert(message);
});

connection.connectSocket(function(socket) {
	socket.on('custom-message', function(message) {
		alert(message);

		// custom message
		if(message.joinMyRoom) {
			connection.join(message.roomid);
		}
	});

	socket.emit('custom-message', 'hi there');

	connection.open('room-id');
});

var options = {
	localMediaConstraints: {
		audio: true,
		video: true
	},
	onGettingLocalMedia: function(stream) {},
	onLocalMediaError: function(error) {}
};
connection.getUserMediaHandler(options);

# to become a public moderator
connection.open('roomid', true); // 2nd argument is "TRUE"

# or call this method later (any time)
connection.becomePublicModerator();

connection.getPublicModerators(function(array) {
	array.forEach(function(moderator) {
		// moderator.extra
		connection.join(moderator.userid);
	});
});

var moderatorIdStartsWith = 'public-moderator-';
connection.getPublicModerators(moderatorIdStartsWith, function(array) {
	// only those moderators are returned here
	// that are having userid similar to this:
	// public-moderator-xyz
	// public-moderator-abc
	// public-moderator-muaz
	// public-moderator-conference
	array.forEach(function(moderator) {
		// moderator.extra
		connection.join(moderator.userid);
	});
});

connection.setUserPreferences = function(userPreferences) {
    if (connection.dontAttachStream) {
    	// current user's streams will NEVER be shared with any other user
        userPreferences.dontAttachLocalStream = true;
    }

    if (connection.dontGetRemoteStream) {
    	// current user will NEVER receive any stream from any other user
        userPreferences.dontGetRemoteStream = true;
    }

    return userPreferences;
};

connection.checkPresence('roomid', function(isRoomEists, roomid) {
	if(isRoomEists) {
		connection.join(roomid);
	}
	else {
		connection.open(roomid);
	}
});

connection.onReadyForOffer = function(remoteUserId, userPreferences) {
	// if OfferToReceiveAudio/OfferToReceiveVideo should be enabled for specific users
	userPreferences.localPeerSdpConstraints.OfferToReceiveAudio = true;
	userPreferences.localPeerSdpConstraints.OfferToReceiveVideo = true;

	userPreferences.dontAttachStream = false; // according to situation
	userPreferences.dontGetRemoteStream = false;  // according to situation

	// below line must be included. Above all lines are optional.
	connection.multiPeersHandler.createNewPeer(remoteUserId, userPreferences);
};

connection.onNewParticipant = function(participantId, userPreferences) {
    // if OfferToReceiveAudio/OfferToReceiveVideo should be enabled for specific users
	userPreferences.localPeerSdpConstraints.OfferToReceiveAudio = true;
	userPreferences.localPeerSdpConstraints.OfferToReceiveVideo = true;

	userPreferences.dontAttachStream = false; // according to situation
	userPreferences.dontGetRemoteStream = false;  // according to situation

	// below line must be included. Above all lines are optional.
	// if below line is NOT included; "join-request" will be considered rejected.
    connection.acceptParticipationRequest(participantId, userPreferences);
};

var alreadyAllowed = {};
connection.onNewParticipant = function(participantId, userPreferences) {
	if(alreadyAllowed[participantId]) {
		connection.addParticipationRequest(participantId, userPreferences);
		return;
	}

	var message = participantId + ' is trying to join your room. Confirm to accept his request.';
	if( window.confirm(messsage ) ) {
		connection.addParticipationRequest(participantId, userPreferences);
	}
};

connection.disconnectWith('remoteUserId');

// to leave entire room
connection.getAllParticipants().forEach(function(participantId) {
	connection.disconnectWith(participantId);
});

var numberOfUsersInTheRoom = connection.getAllParticipants().length;

var remoteUserId = 'xyz';
var isUserConnectedWithYou = connection.getAllParticipants().indexOf(remoteUserId) !== -1;

connection.getAllParticipants().forEach(function(remoteUserId) {
	var user = connection.peers[remoteUserId];
	console.log(user.extra);

	user.peer.close();
	alert(user.peer === webkitRTCPeerConnection);
});

// to allow another single person to join your room
// it will become one-to-one (i.e. you+anotherUser)
connection.maxParticipantsAllowed = 1;

connection.setCustomSocketHandler(FirebaseConnection);

connection.enableLogs = false; // to disable logs

connection.extra.fullName = 'New Full Name';
connection.updateExtraData(); // now above value will be auto synced among all connected users

connection.onExtraDataUpdated = function(event) {
	console.log('extra data updated', event.userid, event.extra);

	// make sure that <video> header is having latest fullName
	document.getElementById('video-header').innerHTML = event.extra.fullName;
};

connection.socketURL = 'https://domain:port/';

connection.socketOptions = {
	'force new connection': true, // For SocketIO version < 1.0
	'forceNew': true, // For SocketIO version >= 1.0
	'transport': 'polling' // fixing transport:unknown issues
};

if(connection.DetectRTC.browser.isChrome) {
	// it is Chrome
}

// you can even set backward compatibility hack
connection.UA = connection.DetectRTC.browser;
if(connection.UA.isChrome) { }

connection.DetectRTC.detectMediaAvailability(function(media){
	if(media.hasWebcam) { }
	if(media.hasMicrophone) { }
	if(media.hasSpeakers) { }
});

connection.invokeSelectFileDialog(function(file) {
	var file = this.files[0];
	if(file){
		connection.shareFile(file);
	}
});

var BandwidthHandler = connection.BandwidthHandler;
connection.bandwidth = {
	audio: 128,
	video: 256,
	screen: 300
};
connection.processSdp = function(sdp) {
    sdp = BandwidthHandler.setApplicationSpecificBandwidth(sdp, connection.bandwidth, !!connection.session.screen);
    sdp = BandwidthHandler.setVideoBitrates(sdp, {
        min: connection.bandwidth.video,
        max: connection.bandwidth.video
    });

    sdp = BandwidthHandler.setOpusAttributes(sdp);

    sdp = BandwidthHandler.setOpusAttributes(sdp, {
        'stereo': 1,
        //'sprop-stereo': 1,
        'maxaveragebitrate': connection.bandwidth.audio * 1000 * 8,
        'maxplaybackrate': connection.bandwidth.audio * 1000 * 8,
        //'cbr': 1,
        //'useinbandfec': 1,
        // 'usedtx': 1,
        'maxptime': 3
    });

    return sdp;
};

connection.shiftModerationControl('remoteUserId', connection.broadcasters, false);

connection.onShiftedModerationControl = function(sender, existingBroadcasters) {
	connection.acceptModerationControl(sender, existingBroadcasters);
};

connection.filesContainer = document.getElementById('files-container');

connection.videosContainer = document.getElementById('videos-container');

if(connection.isInitiator) {
	connection.addNewBroadcaster('remoteUserId');
}

connection.removeFromBroadcastersList('remote-userid');

connection.onMediaError = function(error) {
	alert( 'onMediaError:\n' + JSON.stringify(error) );
};

connection.renegotiate('with-single-userid');

connection.renegotiate(); // with all users

connection.addStream({
	screen: true,
	oneway: true,
	streamCallback: function(screenStream) {
		// this will be fired as soon as stream is captured
		screenStream.onended = function() {
			document.getElementById('share-screen').disabled = false;

			// or show button
			$('#share-screen').show();
		}
	}
});

connection.enableFileSharing = true;

connection.changeUserId('new-userid');

connection.closeBeforeUnload = false;
window.onbeforeunlaod = function() {
	connection.close();
};

var isPublicRoom = false;
connection.open('roomid', isPublicRoom);

// or
connection.open('roomid', function() {
	// on room created
});

connection.join('roomid');

// or pass "options"
connection.join('roomid', {
	localPeerSdpConstraints: {
		OfferToReceiveAudio: true,
		OfferToReceiveVideo: true
	},
	remotePeerSdpConstraints: {
		OfferToReceiveAudio: true,
		OfferToReceiveVideo: true
	},
	isOneWay: false,
	isDataOnly: false
});

connection.openOrJoin('roomid');

// or
connection.openOrJoin('roomid', function(isRoomExists, roomid) {
	if(isRoomExists) alert('opened the room');
	else alert('joined the room');
});

connection.dontCaptureUserMedia = true;

connection.dontAttachStream = true;

connection.dontGetRemoteStream = true;

connection.__getScreenConstraints = connection.getScreenConstraints;
connection.getScreenConstraints = function(callback) {
    connection.__getScreenConstraints(function(error, screen_constraints) {
        if (connection.DetectRTC.browser.name === 'Chrome') {
            delete screen_constraints.mandatory.minAspectRatio;
            delete screen_constraints.mandatory.googLeakyBucket;
            delete screen_constraints.mandatory.googTemporalLayeredScreencast;
            delete screen_constraints.mandatory.maxWidth;
            delete screen_constraints.mandatory.maxHeight;
            delete screen_constraints.mandatory.minFrameRate;
            delete screen_constraints.mandatory.maxFrameRate;
        }
        callback(error, screen_constraints);
    });
};

connection.__getScreenConstraints = connection.getScreenConstraints;
connection.getScreenConstraints = function(callback) {
    connection.__getScreenConstraints(function(error, screen_constraints) {
        if (connection.DetectRTC.browser.name === 'Chrome') {
            screen_constraints.mandatory = {
                chromeMediaSource: screen_constraints.mandatory.chromeMediaSource,
                chromeMediaSourceId: screen_constraints.mandatory.chromeMediaSourceId
            };
        }
        callback(error, screen_constraints);
    });
};

connection.__getScreenConstraints = connection.getScreenConstraints;
connection.getScreenConstraints = function(callback) {
    connection.__getScreenConstraints(function(error, screen_constraints) {
        if (connection.DetectRTC.browser.name === 'Chrome') {
            delete screen_constraints.mandatory.minAspectRatio;
        }
        if (connection.DetectRTC.browser.name === 'Firefox') {
            delete screen_constraints.width;
            delete screen_constraints.height;
        }
        callback(error, screen_constraints);
    });
};

connection.enableScalableBroadcast = true; // by default, it is false.
connection.singleBroadcastAttendees = 3;   // how many users are handled by each broadcaster

connection.onstream = function(event) {
	if(event.mediaElement) {
		event.mediaElement.muted = true;
		delete event.mediaElement;
	}

	var video = document.createElement('video');
	if(event.type === 'local') {
		video.muted = true;
	}
	video.src = URL.createObjectURL(event.stream);
	connection.videosContainer.appendChild(video);
}

connection.multiPeersHandler.onPeerStateChanged = function(state) {
    if (state.iceConnectionState.search(/disconnected|closed|failed/gi) === -1 && !connection.isConnected) {
        connection.isConnected = true;

        var peer = connection.peers[state.userid].peer;
        getStats(peer, function(result) {
            if (!result || !result.connectionType) return;

            // "relay" means TURN server
            // "srflx" or "prflx" means STUN server
            // "host" means neither STUN, nor TURN
            console.debug('Incoming stream is using:', result.connectionType.remote.candidateType);
            console.debug('Outgoing stream is using:', result.connectionType.local.candidateType);

            // user external ip-addresses
            console.debug('Remote user ip-address:', result.connectionType.remote.ipAddress);
            console.debug('Local user ip-address:', result.connectionType.local.ipAddress);

            // UDP is a real media port; TCP is a fallback.
            console.debug('Peers are connected on port:', result.connectionType.transport);
        }, 5000);
        return;
    }
};

connection.onmute = function(e) {
    if (!e.mediaElement) {
        return;
    }

    if (e.muteType === 'both' || e.muteType === 'video') {
        e.mediaElement.src = null;
        e.mediaElement.pause();
        e.mediaElement.poster = e.snapshot || 'https://cdn.webrtc-experiment.com/images/muted.png';
    } else if (e.muteType === 'audio') {
        e.mediaElement.muted = true;
    }
};

connection.onunmute = function(e) {
    if (!e.mediaElement) {
        return;
    }

    if (e.unmuteType === 'both' || e.unmuteType === 'video') {
        e.mediaElement.poster = null;
        e.mediaElement.src = URL.createObjectURL(e.stream);
        e.mediaElement.play();
    } else if (e.unmuteType === 'audio') {
        e.mediaElement.muted = false;
    }
};

connection.bandwidth = {
    audio: 128,
    video: 1024,
    screen: 1024
};

var videoConstraints = {
    mandatory: {
        maxWidth: 1920,
        maxHeight: 1080,
        minAspectRatio: 1.77,
        minFrameRate: 3,
        maxFrameRate: 64
    },
    optional: []
};

connection.mediaConstraints.video = videoConstraints;

// pass second parameter to force options
var connection = new RTCMultiConnection(roomId, {
    useDefaultDevices: true
});

// pass second parameter to force options
var connection = new RTCMultiConnection(roomId, {
    autoOpenOrJoin: true
});