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From "Stefan Zoerner (JIRA)" <directory-...@incubator.apache.org>
Subject [jira] Updated: (DIREVE-256) Extended operation causes client to hang
Date Sun, 18 Sep 2005 15:27:54 GMT
     [ http://issues.apache.org/jira/browse/DIREVE-256?page=all ]

Stefan Zoerner updated DIREVE-256:
----------------------------------

    Attachment: patch_DIREVE-256.txt

A patch which changes class org.apache.ldap.server.protocol.ExtendedHandler to behave as described
in the issue.

> Extended operation causes client to hang
> ----------------------------------------
>
>          Key: DIREVE-256
>          URL: http://issues.apache.org/jira/browse/DIREVE-256
>      Project: Directory Server
>         Type: Bug
>   Components: protocol
>     Versions: 0.9.3, 0.9.2
>     Reporter: Stefan Zoerner
>     Assignee: Alex Karasulu
>     Priority: Minor
>  Attachments: UnknownExtendedOperationTest.java, patch_DIREVE-256.txt
>
> If a client calls an arbitrary extended operation, the server (namely the ExtendedHandler)
throws a NotImplementedException. After this, the call of the client blocks, and the client
hangs. 
> I suggest to change the handler to simply send an error code 2 (LDAP_PROTOCOL_ERROR)
with message "Unrecognized extended operation" back to the client. This is the expected behavior
if an extended operation is not supported by the server.
> Attached you find a test case, which demands an always unknown extended operation (OID=1.1)
and checks the result. Error code 2 leads to a CommunicationException in JNDI. I have tested
this with several LDAP server implementations, behavior was always as expected. 
> I have also attached a patch, which changes the ExtendedHandler to behave like described
above. Not a big thing, but it leads to compliant behavior for extended ops, even if we do
not have any in place yet.

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