Hi, I am using the OpenLDAP SDK for an iPhone project. On the iPhone 4, applications can go into the background (in a frozen state) and then come back to the foreground.

When the app comes to the foreground, I do a unbind and then reconnect, to ensure I have a good connection (the LDAP server could do idle time out...). Sometimes, this ldap_unbind_s crashes the app, as noted below in the code and logs:

if (LDAPServer) { NSLog(@"ldap_unbind_s req: %@", description); ldap_unbind_s(LDAPServer); NSLog(@"ldap_unbind_s completed: %@", description); } LDAPServer = NULL;

Fri Oct 22 21:35:01 unknown CloudFace[780] <Warning>: ldap_unbind_s req: Entic.net Fri Oct 22 21:35:01 unknown com.apple.launchd[1] <Warning>: (UIKitApplication:net.entic.cf[0xb4bf]) Exited abnormally: Broken pipe Fri Oct 22 21:35:01 unknown SpringBoard[26] <Warning>: Application 'CloudFace' exited abnormally with signal 13: Broken pipe

How should I handle proper unbind operation for this? I could just skip the whole unbind operation, and then make a *new* connection when the app is brought to the foreground and skip the whole ldap_unbind_s call. Is that the recommended action?

Remember, the app can be in the background for just a few seconds or could be hours (when the connection would be dropped). I am trying to avoid having to make new connections repeatedly.

I also have a method, setupServer() that is something like this:

+ (void) setupServer:(Server *)server { NSLog(@"+setupServer"); if ([server LDAPServer]) { NSLog(@"setupServer skipped... connection exists"); return; } ... }

I have idle timeout set to 5 minutes on the LDAP server. Sometimes, even after 5-10 minutes, it doesn't crash, but sometimes it does... and it always seems to be in the ldap_unbind_s, I think.

Thanks! Anil