72 lines
1.7 KiB
JavaScript
Executable File
72 lines
1.7 KiB
JavaScript
Executable File
#!/usr/bin/env node
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// Requires:
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// - express (`npm install express`)
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// - mime-types (`npm install mime-types`)
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const express = require('express')
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const fs = require('fs')
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const path = require('path')
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const process = require('process')
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const mime = require('mime-types')
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const app = express()
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function parseArgv() {
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let file = undefined
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let port = 8989
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if (process.argv.length < 3) {
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throw Error(`Usage: ${process.argv[0]} ${process.argv[1]} <media_file> [port=${port}]`)
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}
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file = process.argv[2]
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if (process.argv.length > 3) {
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port = parseInt(process.argv[3])
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}
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return { file: file, port: port }
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}
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let args = parseArgv()
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app.get('/media', function(req, res) {
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const path = args.file
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const ext = args.file.split('.').pop()
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const stat = fs.statSync(path)
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const fileSize = stat.size
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const range = req.headers.range
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const mimeType = mime.lookup(ext)
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if (range) {
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const parts = range.replace(/bytes=/, "").split("-")
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const start = parseInt(parts[0], 10)
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const end = parts[1]
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? parseInt(parts[1], 10)
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: fileSize-1
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const chunksize = (end-start)+1
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const file = fs.createReadStream(path, {start, end})
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const head = {
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'Content-Range': `bytes ${start}-${end}/${fileSize}`,
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'Accept-Ranges': 'bytes',
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'Content-Length': chunksize,
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'Content-Type': mimeType,
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}
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res.writeHead(206, head)
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file.pipe(res)
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} else {
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const head = {
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'Content-Length': fileSize,
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'Content-Type': mimeType,
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}
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res.writeHead(200, head)
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fs.createReadStream(path).pipe(res)
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}
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})
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app.listen(args.port, function () {
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console.log(`Listening on port ${args.port}`)
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})
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