denoland-deno/tests/node_compat/test/parallel/test-net-server-try-ports.js

// deno-fmt-ignore-file
// deno-lint-ignore-file

// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 16.13.0
// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually

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'use strict';
// This test binds to one port, then attempts to start a server on that
// port. It should be EADDRINUSE but be able to then bind to another port.
const common = require('../common');
const assert = require('assert');
const net = require('net');

// TODO: support net.Server() without new

const server1 = new net.Server();

const server2 = new net.Server();

server2.on('error', common.mustCall(function(e) {
  assert.strictEqual(e.code, 'EADDRINUSE');

  server2.listen(0, common.mustCall(function() {
    server1.close();
    server2.close();
  }));
}));

server1.listen(0, common.mustCall(function() {
  // This should make server2 emit EADDRINUSE
  server2.listen(this.address().port);
}));