Gzip - client/server

client.js

const http = require('http');
const { readFile } = require('fs');
const { gzip } = require('zlib');
const { promisify } = require('util');

const run = async () => {
  try {
    const data = await promisify(readFile)('./menu.json');
    const req = http.request({
      method: 'POST',
      hostname: '127.0.0.1',
      port: 9292,
      path: '/'
    }, (res) => {
      res.on('data', (response) => {
        console.log(response.toString());
      });
    });

    req.write(await promisify(gzip)(data));
    req.end();
  } catch (error) {
    console.error(error);
  }
};

run();

server.js

const express = require('express');
const { createGunzip } = require('zlib');

const app = express();
app.post('/', (req, res) => {
  const buffer = [];
  const gunzip = createGunzip();
  req.pipe(gunzip);

  gunzip
    .on('data', (data) => buffer.push(data))
    .on('end', () => {
      // const result = buffer.join('');
      res.send('Request processed.');
    }).on('error', (error) => res.send(`Error: ${error.message}`));
});

app.listen(9292, () => console.log('Up: http://localhost:9292'));