(ITS#5133) Synchronous replication on slave doesn't notice lost network connection

Full_Name: Audrius Valunas Version: openldap2-2.3.27-25 OS: SUSE LINUX 10.0 (i586) OSS URL: Submission from: (NULL) (212.59.0.201)

There is synchronous replication between mastyer and slave. When network connectivity problems occur master closes tcp connection but slave doesn't notice those problems, it still has tcp connection open, but in real it is not receiving updates any more. I think that can be solved adding some ack from slave because sending on such a socket would fail and force slave to retry connection.