连接到LDAPS的问题

Question

我连接到LDAPS时遇到以下异常：

Exception in thread "main" java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:189)
    at java.net.SocketInputStream.read(SocketInputStream.java:121)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:312)
    at sun.security.ssl.InputRecord.read(InputRecord.java:350)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
    at sun.security.ssl.SSLSocketImpl.waitForClose(SSLSocketImpl.java:1723)
    at sun.security.ssl.HandshakeOutStream.flush(HandshakeOutStream.java:122)
    at sun.security.ssl.Handshaker.kickstart(Handshaker.java:909)
    at sun.security.ssl.SSLSocketImpl.kickstartHandshake(SSLSocketImpl.java:1439)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1304)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1355)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
    at InstallCert.main(InstallCert.java:72)

我正在使用以下代码进行连接：

InputStream in = new FileInputStream(file);
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(in, passphrase);
in.close();

SSLContext context = SSLContext.getInstance("TSL");
TrustManagerFactory tmf =
    TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
context.init(null, new TrustManager[] {tm}, null);
SSLSocketFactory factory = context.getSocketFactory();

System.out.println("Opening connection to " + host + ":" + port + "...");
SSLSocket socket = (SSLSocket)factory.createSocket(host, port);
socket.setSoTimeout(10000);
try {
    System.out.println("Starting SSL handshake...");
    socket.startHandshake();
    socket.close();
    System.out.println();
    System.out.println("No errors, certificate is already trusted");
} catch (SSLException e) {
    System.out.println();
    e.printStackTrace(System.out);
}

端口为：636。域控制器在Windows 2012上。当我在Windows 2008上连接到域控制器时没有问题，它可以正常工作。

这是否意味着LDAP不使用SSL？