@tokenizer/http

Specialized strtok3 tokenizer for HTTP(S) RFC-7233 range request transfer.

The range request will ensure only the data is downloaded, which is actually being read, and data ignored will not be downloaded.

The range request mechanism is derived from @tokenizer/range.

Installation

Install using npm:

npm install @tokenizer/http

or using yarn:

yarn add @tokenizer/http

Usage

Configuration options

• resolveUrl, boolean, default value is true. Enable caching of redirects of HEAD requests.

Example

// const mm = require('music-metadata-browser');  // Use module 'music-metadata-browser' client side
const mm = require('music-metadata'); // Use module 'music-metadata' in Node.js
const {makeTokenizer} = require('@tokenizer/http');

const audioTrackUrl = 'https://test-audio.netlify.com/Various%20Artists%20-%202009%20-%20netBloc%20Vol%2024_%20tiuqottigeloot%20%5BMP3-V2%5D/01%20-%20Diablo%20Swing%20Orchestra%20-%20Heroines.mp3';

(async () => {
  const httpTokenizer = await makeTokenizer(audioTrackUrl);
  const metadata = await mm.parseFromTokenizer(httpTokenizer);
  console.log('metadata:', metadata);
})();

Server requirements

The server needs to send the following headers:

| HTTP header-| Value | |-------------|-------| | Access-Control-Allow-Origin | "*" | | Access-Control-Allow-Methods | "GET,HEAD,OPTIONS" | | Access-Control-Allow-Headers | "Content-Type, Range" | | Access-Control-Expose-Headers | "Content-Length, Content-Range" |

Example configuring Apache for streaming. Add the following to .htaccess in the folder sharing your audio tracks:

Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Methods "GET,HEAD,OPTIONS"
Header set Access-Control-Allow-Headers "Content-Type, User-Agent, If-Modified-Since, Cache-Control, Range"
Header set Access-Control-Expose-Headers "Content-Length, Content-Range"

Ref:

• streamroot.io: Range requests basics

Try if range request is supported:

curl -v -L --header "range: bytes=1-8" http://localhost:8080/bbb/test

Dependencies

Licence

(The MIT License)

Copyright (c) 2018 Borewit

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. git pull THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.