GCP Issue 1 - Non-deterministic behavior with Expect4J

[cverges]

Reported by [email protected], Jul 28, 2008
Expect4j is really a good project.

In following code snippet, I am trying to login to terminal server. somehow
I have to wait little bit ( 5 seconds) between 'send' and 'expect',
otherwise 'expect' function throws exception of type 'Exception'. If I
execute code in debug mode, I do not need Thread.sleep.

expect.expect("login:");

if (expect.getLastState().getMatch() == null) {
    throw new LoginFailedException("Login to NS Failed, someone is already logged in");
}

expect.send("nsroot" + "\r");

Thread.sleep(2 * 1000); //Somehow Expect4j does not work without this delay in execution.

expect.expect("Password:");

if (expect.getLastState().getMatch() == null) {
    throw new LoginFailedException("Login to NS Failed");
}

expect.send("nsroot" + "\r");

Thanks.
Jay

Jul 28, 2008 #1 [email protected]
What should I understand when 'expect' function throws exception of type
'Exception'.? I am really not able to debug this as in debug mode I do not need
Thread.sleep and expect function works fine. I am very unclear what is going on.
Thanks a lot. Hope to hear from you soon.

Thanks.
Jay

Jan 22, 2013 #2 [email protected]
Jay, you really saved my day. I was banging my head since morning to get the my code working. It was trying this tutorial http://nikunjp.wordpress.com/2011/07/30/remote-ssh-using-jsch-with-expect4j/ and it was working fine in debug mode but while running it was giving following error

        expect4j.BlockingConsumer run
        INFO: Stop Requested

then I used your trick of 'Thread.sleep(2 * 1000);'
thanks a lot.