Java novell LDAPConnection timeout problem

Posted on 2014-09-18
Last Modified: 2014-09-30
Hello, Experts,
I'm trying to set timeout value in constructor and also by using LDAPConnection.setSocketTimeOut( ) method to 5 sec  in case if LDAP server is dead, it should throw LDAPException in 5 sec, but instead it waits for 21 sec in WIndows and 63 sec in Linux - no matter what value you pass in constructor or setSocketTimeOut( ) method, Please see the code below or in attachements:
Note: Please rename attached to ldap.jar and add it  to your CLASSPATH
==========================  START   ==========================================

import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPException;

 * Class to test the timeout issue with novell LDAPConnection.
 * @author Max G
public class NEXLdapConnectionTimeOutTest {

       * @param args
      public static void main(String[] args) {
            //Constructs a new LDAPConnection object, which will use the supplied timeout value (in MILLI SECONDS)
            //NO MATTER WHAT VALUE YOU PUT - it gives 21 sec in Windows and 1 min in Linux
            LDAPConnection ldapConnection = new LDAPConnection(5000); // 5 sec      
            //ldapConnection.setSocketTimeOut(5000); // Not working either
            try {
                  //Use dummy IP - not on  network - imitate dead LDAP Server
                  ldapConnection.connect("", 636);
            } catch (LDAPException e) {

==========================  END ==========================================

Please help if you have any ideas how to set timeout correctly for com.novell.ldap.LDAPConnection.
Question by:MehtaJasmin
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LVL 86

Expert Comment

ID: 40331697
java NEXLdapConnectionTimeOutTest

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Author Comment

ID: 40333207
the solution above does not work, still have 21 sec
LVL 86

Expert Comment

ID: 40333251
I can't comment really. You'd need to look at the source to find out what's going on
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Author Comment

ID: 40333318
CEHI, did you try to run the program yourself? Is it working for you?
Thank you.
LVL 86

Expert Comment

ID: 40333846
I had the same problem

Accepted Solution

MehtaJasmin earned 0 total points
ID: 40344706
Looks like com.novell.ldap library  ldap.jar has a bug. So it's not possible to make it work, instead I was using the java socket to check if LDAP servers are up, the code is below:
try {

      Socket socket= new Socket();
      SocketAddress socketAddress = new InetSocketAddress(sLDAPServerIPPrimary, iLDAPServerPort);
      socket.connect(socketAddress, iTimeout);
      socket = null;

} catch (Exception e) {
      //Throw LDAPException if LDAP Server is down
      throw new LDAPException("======= THIS IS SOCKET TIMEOUT TEST!!!! ===== " + e.getLocalizedMessage(),LDAPException.CONNECT_ERROR, e.getMessage());            

Author Closing Comment

ID: 40351795
Can't make ldap.jar from novell to set timeout, even API documented as you can. Workaround is to use Socket to check  the connection timeout and then user other functionality of novell ldap.jar.

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