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https://issues.apache.org/jira/browse/DIRAPI-342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16835436#comment-16835436
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Stefan Seelmann commented on DIRAPI-342:
----------------------------------------
{code}
$ cat /proc/sys/net/ipv4/tcp_fin_timeout
60
$ ulimit -n
1024
{code}
It's good to have a small value for ulimit -n (open files) to see we don't leak
connections.
I played with TIME_WAIT and SO_LINGER, still the same behaviour.
I'm still convinced that it's an async issue, and it doesn't happen on your Mac
nor on the Jenkins server. When I just put a {{Thread.sleep(2L);}} after each
unbind it works, the 10000 loop runs in approx. 50 seconds. I won't have much
time to investigate this week, hopefully next week.
> Unbind breaks connection
> ------------------------
>
> Key: DIRAPI-342
> URL: https://issues.apache.org/jira/browse/DIRAPI-342
> Project: Directory Client API
> Issue Type: Bug
> Affects Versions: 2.0.0.AM2
> Reporter: Stefan Seelmann
> Priority: Major
> Fix For: 2.0.0.AM3, 2.0.0
>
>
> The DelegatedAuthIT/DelegatedAuthOverSslIT/DelegatedAuthOverTlsIT tests fail
> randomly (I try to stabilize tests on Windows, but also happens on Jenkins).
> They all do multiple bind() and unbind() on the same connection, it seems the
> unbind() is the reason.
> A simple test to reproduce the problem (on Linux):
> {code}
> @Test
> public void testSimpleBindAndUnbindLoop() throws Exception
> {
> try ( LdapConnection connection = new LdapNetworkConnection(
> Network.LOOPBACK_HOSTNAME,
> getLdapServer().getPort() ) )
> {
> for ( int i = 0; i < 10000; i++ )
> {
> System.out.println( i );
> connection.bind( "uid=admin,ou=system", "secret" );
> assertTrue( connection.isAuthenticated() );
> connection.unBind();
> assertFalse( connection.isAuthenticated() );
> // Thread.sleep( 10L );
> }
> }
> }
> {code}
> Without the unbind() or when sleeping for 10ms it works fine.
> Otherwise I saw 3 different errors:
> {code}
> org.apache.directory.ldap.client.api.exception.InvalidConnectionException:
> ERR_04108_INVALID_CONNECTION Cannot connect on the server, the connection is
> invalid
> at
> org.apache.directory.ldap.client.api.LdapNetworkConnection.checkSession(LdapNetworkConnection.java:574)
> at
> org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1596)
> at
> org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1488)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:134)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:118)
> {code}
> {code}
> org.apache.directory.api.ldap.model.exception.LdapException:
> ERR_04169_RESPONSE_QUEUE_EMPTIED The response queue has been emptied, no
> response was found.
> at
> org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1534)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:134)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:118)
> Caused by: org.apache.directory.api.ldap.model.exception.LdapException:
> ERR_04170_TIMEOUT_OCCURED TimeOut occurred
> at
> org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1505)
> {code}
> {code}
> org.apache.directory.api.ldap.model.exception.LdapProtocolErrorException:
> PROTOCOL_ERROR: The server will disconnect!
> at
> org.apache.directory.api.ldap.model.message.ResultCodeEnum.processResponse(ResultCodeEnum.java:2137)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:136)
> at
> org.apache.directory.ldap.client.api.AbstractLdapConnection.bind(AbstractLdapConnection.java:118)
> at
> org.apache.directory.shared.client.api.operations.bind.SimpleBindRequestTest.testSimpleBindAndUnbindLoop(SimpleBindRequestTest.java:664)
> {code}
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