node/test/parallel/test-tls-client-resume.js

// Create an ssl server.  First connection, validate that not resume.
// Cache session and close connection.  Use session on second connection.
// ASSERT resumption.

if (!process.versions.openssl) {
  console.error('Skipping because node compiled without OpenSSL.');
  process.exit(0);
}

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

var options = {
  key: fs.readFileSync(common.fixturesDir + '/keys/agent2-key.pem'),
  cert: fs.readFileSync(common.fixturesDir + '/keys/agent2-cert.pem')
};

var connections = 0;

// create server
var server = tls.Server(options, function(socket) {
  socket.end('Goodbye');
  connections++;
});

// start listening
server.listen(common.PORT, function() {

  var session1 = null;
  var client1 = tls.connect({
    port: common.PORT,
    rejectUnauthorized: false
  }, function() {
    console.log('connect1');
    assert.ok(!client1.isSessionReused(), 'Session *should not* be reused.');
    session1 = client1.getSession();
  });

  client1.on('close', function() {
    console.log('close1');

    var opts = {
      port: common.PORT,
      rejectUnauthorized: false,
      session: session1
    };

    var client2 = tls.connect(opts, function() {
      console.log('connect2');
      assert.ok(client2.isSessionReused(), 'Session *should* be reused.');
    });

    client2.on('close', function() {
      console.log('close2');
      server.close();
    });
  });
});

process.on('exit', function() {
  assert.equal(2, connections);
});