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https://issues.apache.org/jira/browse/DIRSERVER-2369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17520247#comment-17520247
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Emmanuel Lécharny commented on DIRSERVER-2369:
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Hi Alexander,
when an {{UnbindRequest}} is being processed on the server, if the LdapSession
is null, we simply return without doing anything. The log you get is just a
log, and you can assume the Unbind has been successful (actually, as soon as
you send an Unbind, you can safely assume it's successful).
What I don't get is how that could lead to problem in your tests?
> ignoring message received from null session
> -------------------------------------------
>
> Key: DIRSERVER-2369
> URL: https://issues.apache.org/jira/browse/DIRSERVER-2369
> Project: Directory ApacheDS
> Issue Type: Bug
> Affects Versions: 2.0.0.AM26
> Reporter: Alexander Schwartz
> Priority: Major
>
> In a test setup we regularly saw the warning that an unbind request wasn't
> processed (see log snippet below). This lead to errors later in our test, as
> it assumed that the unbind would have been successful.
> Looking at the comment in the code of LdapRequestHandler, it reads: "in some
> cases the session is becoming null though the client is sending the
> UnbindRequest before closing".
> Our workaround attempt is now to enable Java's LDAP connection pooling so
> that we don't close the LDAP session right after sending the unbind request.
> Ideally we would like to see the unbind request being processes regardless of
> the closed session, as the caller doesn't really have means to determine if
> the asynchronous processing has completed.
> It would be great if ApacheDS would handle this case.
>
> The workaround for Java LDAP connection pooling:
> * com.sun.jndi.ldap.connect.pool set to true to enable connection pooling
> * com.sun.jndi.ldap.connect.pool.maxsize set to the same value as
> com.sun.jndi.ldap.connect.pool.prefsize to avoid short-lived connections
>
> The log:
> {{11:05:56,830 INFO
> [org.apache.directory.server.ldap.handlers.LdapRequestHandler]
> (pool-26-thread-1) ignoring the message MessageType : UNBIND_REQUEST}}
> {{Message ID : 3}}
> {{UnBind
> Requestorg.apache.directory.api.ldap.model.message.UnbindRequestImpl@cffb7dca
> ManageDsaITImpl Control}}
> {{Type OID : '2.16.840.1.113730.3.4.2'}}
> {{Criticality : 'false'}}
> {{'}}
> {{received from null session}}
>
>
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