Hi All, We have a multi-threaded server that uses netscape ldap c sdk 4.1 in it's older release. We are experiencing some random crashes, while freeing memory, in the call to ldap_unbind() in our code. Due to its random nature, We haven't been able to create a test case for the issue so far.
Our environment is as follows - The backend directory server is AD.NET 2003 and our server is running on a Win 2003 box. AD.NET is by default configured to close idle ldap connections every 15 mins. - ldap sdk version is 4.1. [We have alread migrated to ldap sdk 5.X in the later versions of our product.] - Another thing that is hampering us is that there are no Windows symbol files[pdb] available for ldap sdk 4.1, which prevents us from capturing an exact stacktrace inside ldap_unbind. - Our server creates a pool of ldap connections with separate dedicated threads to create new connections as well as clean-up old connections. - multiple worker threads can share the same ldap connection handle at the same time. e.g. you can have multiple ldap_simple_bind going asynchronously over the same ldap connection handle at the same time. - we have registered callback functions for createmutex, lockmutex, unlockmutex, freemutex, getthreadid, getldaperror etc. - we have confirmed via logging that we are not calling ldap_unbind twice on the same ldap handle. Please let me know if anyone has any suggestions. I also noticed that there were already a couple of posts regarding crashes in ldap_unbind. Did we have any resolutions for these? Heroux, Bernard R wrote on 3/30/2006 > Every so often the ldap_unbind_s will cause a crash. This occurs even > when checking the ldapHandle for NULL before calling the unbind. Mike wrote on 3/2/2006 > I was reading through the documentation on how to handle failover or > being disconnected from an LDAP server in my apps. One method is to > call ldap_unbind and reconnect and rebind, while the other method is set > the LDAP_OPT_RECONNECT option and only rebind (i.e. don't call > ldap_unbind). > > http://www.mozilla.org/directory/csdk-docs/using.htm#handle_failover > > We had been using the former of the two methods, but some of our apps > were coring randomly during the ldap_unbind call Thanks & Regards, Pradnyesh _______________________________________________ dev-tech-ldap mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-ldap
