File Sharing + Text Chat using WebRTC DataChannel

HOME © Muaz Khan . @WebRTCWeb . Github . Latest issues . What's New?

Getting started with WebRTC DataChannel

<script src="https://cdn.webrtc-experiment.com/DataChannel.js"></script>
<script>
    var channel = new DataChannel();

    // to create/open a new channel
    channel.open('channel-name');

    // to send text/data or file
    channel.send(file || data || 'text');
	
    // if soemone already created a channel; to join it: use "connect" method
    channel.connect('channel-name');
</script>

Features:

1. Send file directly — of any size
2. Send text-message of any length
3. Send data directly
4. Simplest syntax ever! Same like WebSockets.
5. Supports fallback to socket.io/websockets/etc.
6. Auto users' presence detection
7. Allows you eject any user; or close your entire data session

Additional:

<script>
    // to be alerted on data ports get open
    channel.onopen = function(userid) {}
	
    // to be alerted on data ports get new message
    channel.onmessage = function(message, userid) {}
	
    // by default; connection is [many-to-many]; you can use following directions
    channel.direction = 'one-to-one';
    channel.direction = 'one-to-many';
    channel.direction = 'many-to-many';	// --- it is default

    // show progress bar!
    channel.onFileProgress = function (packets) {
        // packets.remaining
        // packets.sent
        // packets.received
        // packets.length
    };

    // on file successfully sent
    channel.onFileSent = function (file) {
        // file.name
        // file.size
    };

    // on file successfully received
    channel.onFileReceived = function (fileName) {};
</script>

Errors Handling

<script>
    // error to open data ports
    channel.onerror = function(event) {}
	
    // data ports suddenly dropped
    channel.onclose = function(event) {}
</script>

Use your own socket.io for signaling

<script>
    // by default socket.io is used for signaling; you can override it
    channel.openSignalingChannel = function(config) {
        var socket = io.connect('http://your-site:8888');
        socket.channel = config.channel || this.channel || 'default-channel';
        socket.on('message', config.onmessage);

        socket.send = function (data) {
            socket.emit('message', data);
        };

        if (config.onopen) setTimeout(config.onopen, 1);
        return socket;
    }
</script>