[launchd-dev] Diagnosing launchd daemon failure to launch
iain.delaney at gmail.com
Fri Nov 7 05:37:15 PST 2008
Thanks for the input, but if I want to use Mach services, couldn't I
just use a named DO connection (like [NSConnection registerName:] )?
Then I don't need to put anything about a Mach service in the plist. I
tried this earlier and it seemed to work fine.
Then I read tech note 2083: Daemons and Agents and found that DTS
recommends against using Mach messages and suggests UNIX Domain
sockets instead. That's how I ended up with my current problem. Are
the Mach APIs and Distributed Objects really as dangerous as the tech
note leads me to believe?
Thanks for your help,
On 6-Nov-08, at 5:14 PM, Dave Zarzycki wrote:
> Alternatively, given that your code uses Distributed Objects, one
> can add a Mach service to the launchd property-list and then use
> this on the server side:
> id serverBinding = [NSConnection serviceConnectionWithName:
> @"com.example.exampleMachService" rootObject: exampleObject];
> And on the client side:
> id exampleRemoteObject = [NSConnection connectionWithRegisteredName:
> @"com.example.exampleMachService" host: nil];
> On Nov 6, 2008, at 10:37 AM, Iain Delaney wrote:
>> Ahh, that was the problem. So the real issue is that my daemon is
>> loading, but not responding to my client app.
>> I'm trying to use Distributed Objects on top of UNIX Domain
>> sockets. The directory for the socket is /var/tmp, and the client
>> and server can communicate if I run both programs inside XCode.
>> However, when I move the daemon program to /Library/
>> PrivilegedHelperTools and copy to plist into /Library/LaunchDaemons
>> everything stops working. The client seems to be hanging while
>> trying to connect to the socket.
>> Any ideas what I'm doing wrong?
>> At 10:46 -0500 5/11/08, Iain Delaney wrote:
>> >Then I reboot, and run 'launchctl list' in the terminal.
>> Did you use "sudo launchctl list", or just "launchctl list"? The
>> latter will show you the list of jobs for login session launchd, not
>> for the global launchd.
>> Quinn "The Eskimo!" <http://www.apple.com/developer/
>> Apple Developer Relations, Developer Technical Support, Core OS/
>> launchd-dev mailing list
>> launchd-dev at lists.macosforge.org
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