test/parallel/test-net-after-close.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
const common = require('../common');
const assert = require('assert');
const net = require('net');

const server = net.createServer(function(s) {
  console.error('SERVER: got connection');
  s.end();
});

server.listen(0, common.mustCall(function() {
  const c = net.createConnection(this.address().port);
  c.on('close', common.mustCall(function() {
    console.error('connection closed');
    assert.strictEqual(c._handle, null);
    // Calling functions / accessing properties of a closed socket should not
    // throw.
    c.setNoDelay();
    c.setKeepAlive();
    c.bufferSize;
    c.pause();
    c.resume();
    c.address();
    c.remoteAddress;
    c.remotePort;
    server.close();
  }));
}));