Re: PATCH: back-sock

[Hallvard B Furuseth <h.b.furuseth@usit.uio.no>]

Howard Chu writes:
> It certainly sounds like an improvement over back-shell, and there may
> be some value in keeping the perl interpreter outside the slapd process.

Yes: And slapd won't crash if a Perl routine crashes.
And perl can be run as a user with none of slapd's privileges, so
one need not be too paranoid about running other people's Perl code.


Brian, you have a name conflict with at least print_suffixes() and
read_and_send_results() in back-shell.  You can prefix the names with
sock_, or maybe reuse some back-shell code similar to how back-hdb
reuses back-bdb code.


Regarding future development:

Opensock() says:

> * FIXME: count the number of concurrent open sockets (since each thread
> * may open one). Perhaps block here if a soft limit is reached, and fail
> * if a hard limit reached

Or defer the operation a little and try again later, with some
timelimit for how long to wait.

At the same time, you could add code to retry a few times if connect()
fails because no worker process is listening to the socket file.
Otherwise, if you start slapd and the worker process at the same time, I
think the first LDAP requests can fail if slapd starts up quicker than
the worker process.

Such a change might also allow the admin to kill and restart the worker
process without restarting slapd, and with no LDAP operation failures.

-- 
Hallvard