'use strict'; const common = require('../common'); const http = require('http'); const assert = require('assert'); { const server = http.createServer(common.mustCall((req, res) => { res.writeHead(200); res.end('hello world'); })).listen(0, '127.0.0.1'); server.on('listening', common.mustCall(() => { const req = new http.ClientRequest(server.address(), common.mustCall((response) => { let body = ''; response.setEncoding('utf8'); response.on('data', (chunk) => { body += chunk; }); response.on('end', common.mustCall(() => { assert.strictEqual(body, 'hello world'); server.close(); })); })); req.end(); })); }