com.mks.api.response.APIConnectionException: Remote host closed connection during handshake

Hi,

I keep getting this error when running my code:

com.mks.api.response.APIConnectionException: Remote host closed connection during handshake

import com.mks.api.CmdRunner;
import com.mks.api.Command;
import com.mks.api.IntegrationPoint;
import com.mks.api.IntegrationPointFactory;
import com.mks.api.Option;
import com.mks.api.Session;
import com.mks.api.response.APIException;
import com.mks.api.response.Response;
 
 
 
 
 
 
public class MksMain {
 
 
 @SuppressWarnings("deprecation")
 public static void main(String[] args) {
 String host = "";
 int port = 7001;
 boolean secure = true;
 String user = "";
 String password = "";
 
 try {
 IntegrationPoint ipf = IntegrationPointFactory.getInstance().createIntegrationPoint(host, port, secure, 4, 11);
 Session session = ipf.createSession(user, password); 
 CmdRunner cmd = session.createCmdRunner();
 
 cmd.setDefaultHostname(host);
 cmd.setDefaultPort(port);
 cmd.setDefaultHostname(user);
 cmd.setDefaultPassword(password);
 
 Command connect = new Command(Command.SI, "connect");
 connect.addOption(new Option("",""));
 
 Command checkout = new Command(Command.SI, "co");
 checkout.addOption(new Option("", ""));
 
 Command disconnect = new Command(Command.SI, "disconnect");
 connect.addOption(new Option("",""));
 
 
 cmd.execute(checkout);
 
 
 Response response = cmd.execute(checkout); 
 String resID = response.getResult().getMessage(); 
 System.out.println("Established connection " + resID);
 }
 catch (APIException e){
 System.out.println("oops");
 e.printStackTrace();
 }
 
 
 }
}

Happens after line cmd.execute(checkout);

Any ideas?

Thanks in advance!