[Bug 594840] Re: Many "connection_read(): no connection!" warnings from OpenLDAP server when using ldapi:/// and a bind DN (no external authentication)

[Mark A. Ziesemer]

** Description changed:

  Reported upstream at
  http://www.openldap.org/its/index.cgi/Incoming?id=6548 , but it needs to
  be re-opened there.
  
  Many "connection_read(): no connection!" warnings are written to
  /var/log/debug and /var/log/syslog by slapd.  As stated at
  http://www.openldap.org/lists/openldap-software/200811/msg00079.html ,
  this is apparently not a problem with slapd, but a client that is
  disconnecting without first unbinding.
  
  This appears to be an issue with the libldap client library provided by
  OpenLDAP itself (2.4.21), and not the slapd daemon.
  
  Issue is reproducible even by just using "ldapsearch -H ldapi:///", but
  only if a bind DN is specified (-D) and external authentication is not
  used.
  
  Running slapd with logging enabled (-d 8) shows the attached 3 sequences
  - ldapsearch command followed by the slapd logs.  Note that the
  "connection_read(): no connection!" is only visible on the middle pair.
  
  If this can't / won't be fixed in the client library, the logging of the
  "connection_read(): no connection!" event from slapd should at least be
  demoted to a lower level so that it doesn't fill the default logging
  output, without having to change the overall configured logging level
  and potentially missing other logged events that do require attention.
  
  Ubuntu 10.04,  libldap-2.4-2 : 2.4.21-0ubuntu5
+ 
+ Also still confirmed in Ubuntu 11.10, libldap-2.4-2 :
+ 2.4.25-1.1ubuntu4.1

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https://bugs.launchpad.net/bugs/594840

Title:
  Many "connection_read(): no connection!" warnings from OpenLDAP server
  when using ldapi:/// and a bind DN (no external authentication)

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