text: // Copyright & License details are available under JXCORE_LICENSE file
  
  
  var common = require('../common');
  var assert = require('assert');
  var spawn = require('child_process').spawn;
  var tls = require('tls');
  var https = require('https');
  var fs = require('fs');
  
  // renegotiation limits to test
  var LIMITS = [0, 1, 2, 3, 5, 10, 16];
  
  if (process.platform === 'win32') {
    console.log('Skipping test, you probably don\'t have openssl installed.');
    process.exit();
  }
  
  (function() {
    var n = 0;
    function next() {
      if (n >= LIMITS.length) return;
      tls.CLIENT_RENEG_LIMIT = LIMITS[n++];
      test(next);
    }
    next();
  })();
  
  function test(next) {
    var options = {
      cert: fs.readFileSync(common.fixturesDir + '/test_cert.pem'),
      key: fs.readFileSync(common.fixturesDir + '/test_key.pem')
    };
  
    var seenError = false;
  
    var server = https.createServer(options, function(req, res) {
      var conn = req.connection;
      conn.on('error', function(err) {
        console.error('Caught exception: ' + err);
        assert(/TLS session renegotiation attack/.test(err));
        conn.destroy();
        seenError = true;
      });
      res.end('ok');
    });
  
    server.listen(common.PORT, function() {
      var args = ('s_client -connect 127.0.0.1:' + common.PORT).split(' ');
      var child = spawn('openssl', args);
  
      child.stdout.pipe(process.stdout);
      child.stderr.pipe(process.stderr);
  
      // count handshakes, start the attack after the initial handshake is done
      var handshakes = 0;
      var renegs = 0;
  
      child.stderr.on('data', function(data) {
        if (seenError) return;
        handshakes += (('' + data).match(/verify return:1/g) || []).length;
        if (handshakes === 2) spam();
        renegs += (('' + data).match(/RENEGOTIATING/g) || []).length;
      });
  
      child.on('exit', function() {
        assert.equal(renegs, tls.CLIENT_RENEG_LIMIT + 1);
        server.close();
        process.nextTick(next);
      });
  
      var closed = false;
      child.stdin.on('error', function(err) {
        assert.equal(err.code, 'ECONNRESET');
        closed = true;
      });
      child.stdin.on('close', function() {
        closed = true;
      });
  
      // simulate renegotiation attack
      function spam() {
        if (closed) return;
        child.stdin.write('R\n');
        setTimeout(spam, 50);
      }
    });
  }