test-simple-test-net-client-ref-bug.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
// 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 OR OTHER DEALINGS IN THE SOFTWARE.

var common = require('../common');
var assert = require('assert');

var net = require('net');

var buf = new Buffer(1024 * 1024 * 64);
buf.fill('x');

switch (process.argv[2]) {
  case 'server': return server();
  case 'client': return client();
  case undefined: return parent();
  default: throw new Error('unknown case');
}

function server() {
  var server = net.createServer(function(sock) {
    console.log('got connection');
    server.close();
    sock.end(buf);
  });
  server.listen(common.PORT, function() {
    console.log('listening');
  });
}

function client() {
  console.log('client');
  var sock = net.createConnection({ port: common.PORT });
  var finishedRead = false;
  var startedRead = false;

  process.on('exit', function() {
    console.log('started read?', startedRead);
    console.log('finished read?', finishedRead);
    assert(startedRead);
    assert(finishedRead);
    console.log('ok');
  });

  sock.on('end', function() {
    finishedRead = true;
    sock.destroy();
  });

  sock.on('connect', function onconnect() {
    console.log('got connection');

    var handles = process._getActiveHandles();
    assert(handles.indexOf(sock) !== -1 ||
           handles.indexOf(sock._handle) !== -1);
    console.log('client has ref');

    // do nothing.  in 100ms, read the data.
    // we should not close in the meantime.
    var timer = setTimeout(function() {
      startedRead = true;
      sock.resume();
    }, 10);
    timer.unref();
  });
}


// Just run both functions in child procs, and make the output pretty
function parent() {
  var spawn = require('child_process').spawn;
  var node = process.execPath;

  var serverEnd;
  var clientEnd;
  process.on('exit', function(c) {
    assert(!c);
    assert(serverEnd);
    assert(clientEnd);
    console.log('ok');
  });

  var opt = { stdio: ['pipe', 'pipe', 2], env: { NODE_DEBUG: 'net' } };
  var server = spawn(node, [__filename, 'server'], opt);
  var stag = 'SERVER ' + server.pid + ': ';
  server.on('exit', function(c) {
    assert(!c);
    serverEnd = true;
  });
  server.stdout.setEncoding('utf8');
  server.stdout.on('data', function(c) {
    console.error(stag + (c.trim().split(/\n/).join('\n' + stag)));
  });

  server.stdout.once('data', function(c) {
    console.error('starting client');
    var client = spawn(node, [__filename, 'client'], opt);
    client.on('exit', function(c) {
      assert(!c);
      clientEnd = true;
    });
    client.stdout.setEncoding('utf8');
    var ctag = 'CLIENT ' + client.pid + ': ';
    client.stdout.on('data', function(c) {
      console.error(ctag + (c.trim().split(/\n/).join('\n' + ctag)));
    });
  });
}