(Java) Client Certificate in REST (USB Token or Smartcard)

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example shows how to use the Chilkat socket object's connection.
    CkRest rest = new CkRest();
    CkSocket socket = new CkSocket();

    // Set the certificate to be used for mutual TLS authentication
    CkCert cert = new CkCert();

    // If the smartcard or token requires a PIN...
    cert.put_SmartCardPin("000000");

    boolean success = cert.LoadFromSmartcard("");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    success = socket.SetSslClientCert(cert);
    if (success != true) {
        System.out.println(socket.lastErrorText());
        return;
        }

    // Establish the connection using the socket object (with client certificate authentication).
    boolean bTls = true;
    int port = 443;
    int maxWaitMs = 5000;
    success = socket.Connect("www.example.com",port,bTls,maxWaitMs);
    if (success != true) {
        System.out.println("Connect Failure Error Code: " + socket.get_ConnectFailReason());
        System.out.println(socket.lastErrorText());
        return;
        }

    boolean bAutoReconnect = true;

    // Use the connection:
    success = rest.UseConnection(socket,bAutoReconnect);
    if (success != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

    // At this point we are connected and can make REST calls...
    // For example..
    String responseJson = rest.fullRequestNoBody("GET","/someQuery");
    if (rest.get_LastMethodSuccess() != true) {
        System.out.println(rest.lastErrorText());
        return;
        }
  }
}