videojs-contrib-hls/es5/xhr.js

Play back HLS with video.js, even where it's not natively supported

/**
 * @file xhr.js
 */

/**
 * A wrapper for videojs.xhr that tracks bandwidth.
 *
 * @param {Object} options options for the XHR
 * @param {Function} callback the callback to call when done
 * @return {Request} the xhr request that is going to be made
 */
'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});

var _videoJs = require('video.js');

var xhrFactory = function xhrFactory() {
  var xhr = function XhrFunction(options, callback) {
    // Add a default timeout for all hls requests
    options = (0, _videoJs.mergeOptions)({
      timeout: 45e3
    }, options);

    // Allow an optional user-specified function to modify the option
    // object before we construct the xhr request
    if (XhrFunction.beforeRequest && typeof XhrFunction.beforeRequest === 'function') {
      var newOptions = XhrFunction.beforeRequest(options);

      if (newOptions) {
        options = newOptions;
      }
    }

    var request = (0, _videoJs.xhr)(options, function (error, response) {
      if (!error && request.response) {
        request.responseTime = new Date().getTime();
        request.roundTripTime = request.responseTime - request.requestTime;
        request.bytesReceived = request.response.byteLength || request.response.length;
        if (!request.bandwidth) {
          request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);
        }
      }

      // videojs.xhr now uses a specific code
      // on the error object to signal that a request has
      // timed out errors of setting a boolean on the request object
      if (error || request.timedout) {
        request.timedout = request.timedout || error.code === 'ETIMEDOUT';
      } else {
        request.timedout = false;
      }

      // videojs.xhr no longer considers status codes outside of 200 and 0
      // (for file uris) to be errors, but the old XHR did, so emulate that
      // behavior. Status 206 may be used in response to byterange requests.
      if (!error && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {
        error = new Error('XHR Failed with a response of: ' + (request && (request.response || request.responseText)));
      }

      callback(error, request);
    });

    request.requestTime = new Date().getTime();
    return request;
  };

  return xhr;
};

exports['default'] = xhrFactory;
module.exports = exports['default'];