Скачать или смотреть How to stream audio video files using react nodejs

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okay, let's dive into building a react and node.js application for streaming audio and video files. this will be a comprehensive tutorial, covering everything from setup to serving the streams.

*i. project setup and architecture*

1. *project directory structure:*



2. *initialize the projects:*

*client (react):*



*server (node.js):*



*ii. backend (node.js) - setting up the server and streaming route*

1. *`server/index.js` (main server file):*



key points:

*`express`:* the core web framework.
*`cors`:* enables cross-origin resource sharing (important for allowing your react app to make requests to the server). you might need to configure this more precisely in production to allow only your specific frontend origin.
*`path`:* used to construct absolute paths to files and directories.
*`express.static`:* serves static files (like your media files) from the specified directory. the `/media` prefix allows you to access the files via urls like `http://localhost:5000/media/myvideo.mp4`.
*`streamroute`:* mounts the streaming-specific route.

2. *`server/routes/stream.js` (streaming route):*



explanation:

*`fs.stat(filepath, callback)`:* gets file metadata (size).
*`req.headers.range`:* checks for the `range` header (sent by the browser). this is how the browser requests a specific chunk of the file.
*`range(filesize, rangeheader, { combine: true })`:* the `range-parser` library parses the `range` header and returns an array of ranges.
`combine: true` is important to coalesce multiple ranges into one (useful for handling complex range requests).
*status codes:*
`206 partial content`: sent when serving a chunk of the file.
`416 range not satisfiable`: sent if the requested range is invalid.
*headers:*
`content-range`: specifies the range ...

#React #NodeJS #javascript
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