nodejs/test/simple/test-net-connect-buffer.js

// Copyright Joyent, Inc. and other Node contributors.
//
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// "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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var common = require('../common');
var assert = require('assert');
var net = require('net');

var tcpPort = common.PORT;
var dataWritten = false;
var connectHappened = false;

var tcp = net.Server(function(s) {
  tcp.close();

  console.log('tcp server connection');

  var buf = '';
  s.on('data', function(d) {
    buf += d;
  });

  s.on('end', function() {
    assert.equal(buf, "L'État, c'est moi");
    console.log('tcp socket disconnect');
    s.end();
  });

  s.on('error', function(e) {
    console.log('tcp server-side error: ' + e.message);
    process.exit(1);
  });
});

tcp.listen(common.PORT, function() {
  var socket = net.Stream();

  console.log('Connecting to socket ');

  socket.connect(tcpPort, function() {
    console.log('socket connected');
    connectHappened = true;
  });

  console.log('_connecting = ' + socket._connecting);

  assert.equal('opening', socket.readyState);

  // Write a string that contains a multi-byte character sequence to test that
  // `bytesWritten` is incremented with the # of bytes, not # of characters.
  var a = "L'État, c'est ";
  var b = "moi";

  // We're still connecting at this point so the datagram is first pushed onto
  // the connect queue. Make sure that it's not added to `bytesWritten` again
  // when the actual write happens.
  var r = socket.write(a, function() {
    dataWritten = true;
    assert.ok(connectHappened);
    assert.equal(socket.bytesWritten, Buffer(a + b).length);
    console.error('data written');
  });
  assert.equal(socket.bytesWritten, Buffer(a).length);

  assert.equal(false, r);
  socket.end(b);

  assert.equal('opening', socket.readyState);
});

process.on('exit', function() {
  assert.ok(connectHappened);
  assert.ok(dataWritten);
});