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To analyze the code get video-chat-and-screen-sharing.js file version with hash c306c1bbf49bfcbd8e24be927ae95f63b7dbaaba hash 66cc393 that can be found here and and is available to download in build 0.5.28.2753.2747133.

1. API initializing.

Flashphoner.init() code

Code Block

language	js
theme	RDark

        Flashphoner.init({
            flashMediaProviderSwfLocation: '../../../../media-provider.swf',
            screenSharingExtensionId: extensionId
        });

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Flashphoner.roomApi.connect() code

Code Block

language	js
theme	RDark

    connection = Flashphoner.roomApi.connect({urlServer: url, username: username}).on(SESSION_STATUS.FAILED, function(session){
        setStatus('#status', session.status());
        onLeft();
    }).on(SESSION_STATUS.DISCONNECTED, function(session) {
        setStatus('#status', session.status());
        onLeft();
    }).on(SESSION_STATUS.ESTABLISHED, function(session) {
        setStatus('#status', session.status());
        joinRoom();
    });

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ConnectionStatusEvent ESTABLISHED code

Code Block

language	js
theme	RDark

    connection = Flashphoner.roomApi.connect({urlServer: url, username: username}).on(SESSION_STATUS.FAILED, function(session){
        ...
    }).on(SESSION_STATUS.DISCONNECTED, function(session) {
        ...
    }).on(SESSION_STATUS.ESTABLISHED, function(session) {
        setStatus('#status', session.status());
        joinRoom();
    });

4. Joining to the room

connection.join() code

To join, name of the conference room is passed to the method. (The name can be specified as parameter in the URL of the client page; otherwise, random name will be generated.)

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5. Receiving the event describing chat room state

RoomStatusEvent STATE code

On this event:

the length of the array of Participant objects returned by method Room.getParticipants() is determined to get the number of already connected participants
if the maximum allowed number of participants had already been reached, the user leaves the "room"
otherwise, the user starts publishing video stream

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6. Screen streaming

room.publish() code

These parameters are passed to room.publish() method:

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7. Receiving the event notifying that other participant joined to the room

RoomStatusEvent JOINED code

Code Block

language	js
theme	RDark

    connection.join({name: getRoomName()}).on(ROOM_EVENT.STATE, function(room){
        ...
    }).on(ROOM_EVENT.JOINED, function(participant){
        installParticipant(participant);
        addMessage(participant.name(), "joined");
    }).on(ROOM_EVENT.LEFT, function(participant){
        ...
    }).on(ROOM_EVENT.PUBLISHED, function(participant){
        ...
    }).on(ROOM_EVENT.FAILED, function(room, info){
        ...
    }).on(ROOM_EVENT.MESSAGE, function(message){
        ...
    });

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RoomStatusEvent PUBLISHED code

Code Block

language	js
theme	RDark

    connection.join({name: getRoomName()}).on(ROOM_EVENT.STATE, function(room){
        ...
    }).on(ROOM_EVENT.JOINED, function(participant){
        ...
    }).on(ROOM_EVENT.LEFT, function(participant){
        ...
    }).on(ROOM_EVENT.PUBLISHED, function(participant){
        playParticipantsStream(participant);
    }).on(ROOM_EVENT.FAILED, function(room, info){
        ...
    }).on(ROOM_EVENT.MESSAGE, function(message){
        ...
    });

9. Playback of video stream.

participant.play() code

<div> element, in which the video will be displayed depending on source (web camera or screen), is passed to the participant.play() method.

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10. Stop of streaming.

stream.stop() code

Code Block

language	js
theme	RDark

function onMediaPublished(stream) {
    $("#localStopBtn").text("Stop").off('click').click(function(){
        $(this).prop('disabled', true);
        stream.stop();
    }).prop('disabled', false);
    ...
}

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StreamStatusEvent UNPUBLISHED code

Code Block

language	js
theme	RDark

    room.publish({
        display: document.getElementById("preview"),
        constraints: constraints,
        name: "screenShare",
        cacheLocalResources: false
    }).on(STREAM_STATUS.FAILED, function (stream) {
        ...
    }).on(STREAM_STATUS.PUBLISHING, function (stream) {
        ...
    }).on(STREAM_STATUS.UNPUBLISHED, function(stream) {
        onStopSharing();
    });

12. Leaving chat room.

room.leave() code

Code Block

language	js
theme	RDark

function onJoined(room) {
    $("#joinBtn").text("Leave").off('click').click(function(){
        $(this).prop('disabled', true);
        room.leave().then(onLeft, onLeft);
    }).prop('disabled', false);
    ...
}

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