Created
March 22, 2019 15:51
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| const { createServer, get } = require('http') | |
| const index = ` | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>streamable</title> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| ouvre la console | |
| <script type="module">${(() => { | |
| const getNextLine = onData => { | |
| const decoder = new TextDecoder('utf-8') | |
| let buffer = '' | |
| return (value, done) => { | |
| if (done) return buffer && JSON.parse(buffer) | |
| buffer += decoder.decode(value) | |
| let start = 0 | |
| let end = buffer.indexOf('\x1E', start) | |
| while (end >= 0) { | |
| const part = buffer.slice(start, end) | |
| part && onData(JSON.parse(part)) | |
| start = end + 1 | |
| end = buffer.indexOf('\x1E', start) | |
| } | |
| buffer = buffer.slice(start) | |
| } | |
| } | |
| // Fetch method, chrome and others | |
| const fetchStream = async onData => { | |
| const partReader = getNextLine(onData) | |
| const response = await fetch('http://localhost:5475/stream') | |
| const reader = response.body.getReader() | |
| const bodyReader = ({ value, done }) => { | |
| const result = partReader(value, done) | |
| if (done) return result | |
| return reader.read().then(bodyReader) | |
| } | |
| return reader.read().then(bodyReader) | |
| } | |
| // XHR method, firefox only | |
| const xhrStream = onData => | |
| new Promise((resolve, reject) => { | |
| const partReader = getNextLine(onData) | |
| const request = new XMLHttpRequest() | |
| request.responseType = 'moz-chunked-arraybuffer' | |
| request.addEventListener('progress', progress => { | |
| try { | |
| partReader(request.response) | |
| } catch (err) { | |
| request.abort() | |
| reject(err) | |
| } | |
| }) | |
| request.addEventListener('load', () => { | |
| try { | |
| resolve(partReader(undefined, true)) | |
| } catch (err) { | |
| reject(err) | |
| } | |
| }) | |
| request.addEventListener('error', event => { | |
| const error = new Error('request failed') | |
| error.event = event | |
| reject(error) | |
| }) | |
| request.open('GET', 'http://localhost:5475/stream') | |
| request.send() | |
| }) | |
| const isFirefox = navigator.userAgent.search('Firefox') > -1 | |
| if (isFirefox) { | |
| xhrStream(console.log) | |
| .then(result => console.log({ result })) | |
| .catch(console.warn) | |
| } else { | |
| fetchStream(console.log) | |
| .then(result => console.log({ result })) | |
| .catch(console.error) | |
| } | |
| }) | |
| .toString() | |
| .slice(7, -1)}</script> | |
| </body> | |
| </html> | |
| ` | |
| createServer((req, res) => { | |
| if (!req.url.startsWith('/stream')) return res.end(index) | |
| console.log('handeling request...') | |
| let count = 0 | |
| let interval = setInterval(() => { | |
| if (++count > 10) { | |
| clearInterval(interval) | |
| return res.end(`\x1E${JSON.stringify({ count, done: true })}`) | |
| } | |
| res.write(`\x1E${JSON.stringify({ count })}`) | |
| }, 1000) | |
| }).listen(5475, err => { | |
| err ? console.error(err) : console.log(`http://localhost:5475`) | |
| }) |
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