nodejs/test/pummel/test-net-timeout.js

// Copyright Joyent, Inc. and other Node contributors.
//
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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
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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'use strict';
require('../common');
const assert = require('assert');
const net = require('net');

let exchanges = 0;
let starttime = null;
let timeouttime = null;
const timeout = 1000;

const echo_server = net.createServer((socket) => {
  socket.setTimeout(timeout);

  socket.on('timeout', () => {
    console.log('server timeout');
    timeouttime = new Date();
    console.dir(timeouttime);
    socket.destroy();
  });

  socket.on('error', (e) => {
    throw new Error(
      'Server side socket should not get error. We disconnect willingly.');
  });

  socket.on('data', (d) => {
    socket.write(d);
  });

  socket.on('end', () => {
    socket.end();
  });
});

echo_server.listen(0, () => {
  const port = echo_server.address().port;
  console.log(`server listening at ${port}`);

  const client = net.createConnection(port);
  client.setEncoding('UTF8');
  client.setTimeout(0); // Disable the timeout for client
  client.on('connect', () => {
    console.log('client connected.');
    client.write('hello\r\n');
  });

  client.on('data', (chunk) => {
    assert.strictEqual(chunk, 'hello\r\n');
    if (exchanges++ < 5) {
      setTimeout(() => {
        console.log('client write "hello"');
        client.write('hello\r\n');
      }, 500);

      if (exchanges === 5) {
        console.log(`wait for timeout - should come in ${timeout} ms`);
        starttime = new Date();
        console.dir(starttime);
      }
    }
  });

  client.on('timeout', () => {
    throw new Error("client timeout - this shouldn't happen");
  });

  client.on('end', () => {
    console.log('client end');
    client.end();
  });

  client.on('close', () => {
    console.log('client disconnect');
    echo_server.close();
  });
});

process.on('exit', () => {
  assert.ok(starttime != null);
  assert.ok(timeouttime != null);

  const diff = timeouttime - starttime;
  console.log(`diff = ${diff}`);

  assert.ok(timeout < diff);
});