bench: Move tls-connect into benchmark/tls

Also, make it work properly with current node.

benchmark/tls/tls-connect.js

@@ -0,0 +1,63 @@
+var assert = require('assert'),
+    fs = require('fs'),
+    path = require('path'),
+    tls = require('tls');
+
+var common = require('../common.js');
+var bench = common.createBenchmark(main, {
+  concurrency: [1, 10],
+  dur: [1, 3]
+});
+
+var clientConn = 0;
+var serverConn = 0;
+var server;
+var dur;
+var concurrency;
+var running = true;
+
+function main(conf) {
+  dur = +conf.dur;
+  concurrency = +conf.concurrency;
+
+  var cert_dir = path.resolve(__dirname, '../../test/fixtures'),
+      options = { key: fs.readFileSync(cert_dir + '/test_key.pem'),
+                  cert: fs.readFileSync(cert_dir + '/test_cert.pem'),
+                  ca: [ fs.readFileSync(cert_dir + '/test_ca.pem') ] };
+
+  server = tls.createServer(options, onConnection);
+  server.listen(common.PORT, onListening);
+}
+
+function onListening() {
+  setTimeout(done, dur * 1000);
+  bench.start();
+  for (var i = 0; i < concurrency; i++)
+    makeConnection();
+}
+
+function onConnection(conn) {
+  serverConn++;
+}
+
+function makeConnection() {
+  var conn = tls.connect({ port: common.PORT,
+                           rejectUnauthorized: false }, function() {
+    clientConn++;
+    conn.on('error', function(er) {
+      console.error('client error', er);
+      throw er;
+    });
+    conn.end();
+    if (running) makeConnection();
+  });
+}
+
+function done() {
+  running = false;
+  // it's only an established connection if they both saw it.
+  // because we destroy the server somewhat abruptly, these
+  // don't always match.  Generally, serverConn will be
+  // the smaller number, but take the min just to be sure.
+  bench.end(Math.min(serverConn, clientConn));
+}