[jcifs] Failed to negotiate with a suitable domain controller

[Manikandan Chandrasekaran]

Hi,
     I am new to jcifs. When I try connect using the following code, it
throws an exception saying

Failed to negotiate with a suitable domain controller for MYDOMAIN
    at jcifs.smb.SmbSession.getChallengeForDomain(SmbSession.java:126)
    at Jcifs.main(Jcifs.java:26)

But this doesn't happens always. Some times the same code connects to the
server without any changes. Can you please explain me the reason.

jcifs version : 1.2.9

My Code:

public class Jcifs {
    public static void main(String args[]) {
        boolean isSuccessful = false;
        String domain = "MYDOMAIN";
        String username = "MyUserName";
        String password = "MyPassword";

        try {
            System.setProperty("jcifs.netbios.wins",
                    "192.168.151.151");
            System.setProperty("jcifs.smb.client.domain", domain);

            // method 1
            //UniAddress dc = new UniAddress( NbtAddress.getByName(domain,
0x1c, null));

            // method 2 (better)
            NtlmChallenge chal = SmbSession.getChallengeForDomain();
            UniAddress dc = chal.dc;

            System.out.println("Test: found a domain controller:
hostaddress="
                    + dc.getHostAddress() + ", hostname=" + dc.getHostName
());

            SmbSession.logon(dc, new NtlmPasswordAuthentication(domain,
                    username, password));

            isSuccessful = true;
        } catch (SmbException e) {
            e.printStackTrace();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        System.out.println("Login : " + isSuccessful);
    } // main
}

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http://manikandanc.blogspot.com
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