chromecast-play.js

var Client                = require('castv2-client').Client;
var DefaultMediaReceiver  = require('castv2-client').DefaultMediaReceiver;

function play(host, url, type) {

  var client = new Client();

  client.connect(host, function() {
    console.log('connected, launching app on %s with url %s and type %s', host, url, type);

    client.launch(DefaultMediaReceiver, function(err, player) {
      var media = {

        // Here you can plug an URL to any mp4, webm, mp3 or jpg file with the proper contentType.
        contentId: url,
        contentType: type,
        streamType: 'BUFFERED' // or LIVE    
      };

      player.load(media, { autoplay: true }, function(err, status) {
        console.log('media loaded playerState=%s', status.playerState);
          client.close();
      });

    });

  });
}

module.exports = function(RED) {
    'use strict';

    function Node(n) {
      
        RED.nodes.createNode(this,n);

        var node = this;
        
        this.on('input', function (msg) {
            
            var creds = RED.nodes.getNode(n.creds),
                payload = typeof msg.payload === 'object' ? msg.payload : {};
        
            var attrs = ['ip', 'url', 'contentType'];
            for (var attr of attrs) {
                if (n[attr]) {
                    payload[attr] = n[attr];     
                }
            }

            if (payload.ip && payload.url && payload.contentType) {
                play(payload.ip, payload.url, payload.contentType);
            }
            
            node.send(msg);
        });
    }

    RED.nodes.registerType('chromecast-play', Node);
};