Hi Chris,

Thanks a lot for writing this test!

  60         serverSocket = new ServerSocket(0);
69 env.put(Context.PROVIDER_URL, String.format("ldap://localhost:%d/";,

For robustness of the test I would suggest using
InetAddress.getLoopbackAddress() explicitly, to
avoid having the dummy server listen on all interfaces.
Listening on all interfaces has proved to be a source of
intermittent failures in the past, possibly due
to different port reuse strategies at OS level.

88 System.out.println("(" + count + "/" + REPEAT_COUNT 89 + ") It's ok to get NamingException: " + ne);
  90                     // for debug
  91                     ne.printStackTrace();

I think it would be better in that case to print the stactrace on
stdout (i.e. use ne.printStackTrace(System.out)), since that
exception is expected and not considered as an error.

best regards,

-- daniel


On 13/09/2018 07:59, Chris Yin wrote:
Please have a review for below new added test to cover JDK-8205330, thanks

This test used dummy ldap server to simulate the scenario to send “Notice of 
Disconnection” after binding, it will repeat InitialDirContext() for 1000 times 
(normally the NPE bug should be hit less than 100 times run, but just in case), 
test failed with NPE if without JDK-8205330 fix change and passed after the fix.

I put this test under test/jdk/com/sun/jndi/ldap/ since the bug root cause is 
from com.sun.jndi.ldap.LdapClient, feel free to let me know if it should be 
moved to other suitable folder.

bug: https://bugs.openjdk.java.net/browse/JDK-8210695
webrev: http://cr.openjdk.java.net/~xyin/8210695/webrev.00/

Regards,
Chris


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