Thank you for your reply. I checked out distributed objects after posting my message, and thought I could make it work in the direction user application (proxy) → daemon (real object), I couldn't make it work in reverse. So I was left with the only possibility: polling the daemon for logs instead of waiting for them. The scheme I used is contact a distant object owned by the daemon (works) to tell it to call me back at an address for logging purposes. Thought the launchd system-wide daemon had the address, it was unable to establish a connection. Is there a reason for that? -E On 1 mai 2013, at 05:16, Damien Sorresso <dsorresso@apple.com> wrote:

On Apr 29, 2013, at 11:20 AM, Jens Alfke <jens@mooseyard.com> wrote:

...

On Apr 29, 2013, at 10:16 AM, Rustam Muginov <rmuginov@gmail.com> wrote:

...

The simplest Objective-C way to communicate would be distributed objects. It is not, of cause, the most secure way - but definitely the simpliest one.

XPC is based on DO

No, it isn't. -- Damien Sorresso dsorresso@apple.com

...

but has additional security features (e.g. for data validation) to make it safe to use between mutually-untrusted processes. (Again, this is my understanding from reading overview docs. I haven't used it myself.)

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