var rtcDataConnection = new RTCDataConnection({
    onmessage: function (data) {
        console.log(data);
    },
    openSignalingChannel: function (config) {
        var socket = io.connect('http://your-site:8888');
        socket.channel = config.channel || 'WebRTC-RTCDataConnection';
		socket.on('message', config.onmessage);
		
        socket.send = function (data) {
            socket.emit('message', data);
        };

        if (config.onopen) setTimeout(config.onopen, 1);
        return socket;
    },
	
    // 'one-to-one' || 'one-to-many' || 'many-to-many'
    // default: 'many-to-many' ------- it is optional
    direction: 'one-to-many'
});

// Only session initiator should call below line; 
// All other 10000 room participants don't need to call "initDataConnection"!
rtcDataConnection.initDataConnection();

// to send file/data /or text
rtcDataConnection.send( file || data || 'text' );