January 2009 - launchd-dev - lists.macosforge.org

SampleD failure with dynamic SockServiceName
by David Anderson 13 Aug '09

13 Aug '09

My intention is have launchd start a daemon on a dynamic port, publish the port number via bonjour, and then connect to this port after determining the port number using CFNetService (Bonjour). Starting from SampleD (and using the included client.pl), I can advertise the service on a hard-coded port via bonjour, lookup the port number using Bonjour Browser, modify client.pl to use this port, and connect using client.pl. The SampleD binary starts correctly in an OnDemand fashion correctly. If I change <key>SockServiceName</key> <string>12345</string> to <key>SockServiceName</key> <string>0</string> then lookup the dynamic port number using Bonjour Browser and configure client.pl to use this port, client.pl will NOT connect to this port and outputs this error: connect: Connection refused at ./client.pl line 77. With a dynamic port, I am unable to connect to this port using a modified client.pl. I can find no evidence that the SampleD binary is starting in an OnDemand fashion. Adding <key>OnDemand</key> <false/> has no effect. Is there anything different about the default configuration of a dynamic port vs a hard-coded port that would impeded the ability to connect to the dynamically assigned port? Thanks, Dave

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Launchd API
by Xavier Guérin 02 Feb '09

02 Feb '09

Hello, I'm currently involved in the development of an SSH tunnel management application that strongly relies on launchd (http://vortex-ssh.googlecode.com for the curious). The application is composed of two elements. The first element is a PreferencePane that takes care of the tunnels creation. It generates a launchd-compatible property list for each configured ssh connection, and it will be responsible for loading/unloading of the plists into launchd. The second element is a launchd agent that periodically polls the status of the SSH connections and update some GUI. I'm perfectly aware that this question may have already been asked numerous time (and I'm in advance sorry for this), but is there any kind of documentation concerning the message exchanges with launchd (SampleD not really helping)? Reading launchctl.c I've already been able to do some of the polling code of the agent (even though some data structure are still a complete mystery as I speak), but the load/ unload part seems really intricate, and I'm afraid to be obliged to use execve + launchctl to make it work. Thank you for your time and your help. Regards, Xavier ----- Xavier Guérin - Doctoral student TIMA Laboratory, SLS Group 46, av. Félix Viallet, 38000 GRENOBLE, FR Mail : xavier.guerin(a)imag.fr Phone : +33(0)4 76 57 47 59 Ad Astra Per Aspera Triste e' quel discepolo che non avanza il suo maestro

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Re: [launchd-dev] Having issue with launchAgents
by Arjun SM 27 Jan '09

27 Jan '09

Thanks a heap for your reply and my apologies i didn't mentioned the version. I am running on 10.5.5 I will take your advice and reply back with my findings. ~Arjun On Thu, Jan 22, 2009 at 3:51 PM, Quinn <eskimo1(a)apple.com> wrote: > At 12:13 +0530 22/1/09, Arjun SM wrote: > >> I have created a custom Menulet which i have made it as a launchAgent . >> The problem i am facing is after installation if i logout and login again my >> Menulet doesn't come up at all. >> > > You're running on 10.5.x, right? The symptoms you describe almost make it > sound like you're testing on 10.4.x (launchd agents don't work in a useful > way prior to 10.5). > > Beyond that, I suggest you start with something simple. I installed the > following plist on my 10.5.6 machine and it worked just fine. So, start from > that, and mutate it towards what you've got, and see what causes it to stop > working. > > $ cat /Library/LaunchAgents/com.apple.textedit.plist > <?xml version="1.0" encoding="UTF-8"?> > <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" " > http://www.apple.com/DTDs/PropertyList-1.0.dtd"> > <plist version="1.0"> > <dict> > <key>Label</key> > <string>com.apple.textedit</string> > <key>Program</key> > <string>/Applications/TextEdit.app/Contents/MacOS/TextEdit</string> > <key>RunAtLoad</key> > <true/> > </dict> > </plist> > > S+E > -- > Quinn "The Eskimo!" <http://www.apple.com/developer/> > Apple Developer Relations, Developer Technical Support, Core OS/Hardware > _______________________________________________ > launchd-dev mailing list > launchd-dev(a)lists.macosforge.org > http://lists.macosforge.org/mailman/listinfo.cgi/launchd-dev >

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Having issue with launchAgents
by Arjun SM 22 Jan '09

22 Jan '09

Hi all, I have created a custom Menulet which i have made it as a launchAgent . The problem i am facing is after installation if i logout and login again my Menulet doesn't come up at all. I checked the Console.log for more information on it and gave me following error messages which i am not understanding. 22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection : CGSGetWindowBounds: Invalid connection 22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection : CGSGetWindowGeometry: Invalid connection 22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete : CGSDeviceGetGeometry: Invalid device window 22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete : CGSDeviceSynchronize: Invalid device window I was wondering if it has anything to do with my plist which i have installed in /Library/LaunchAgents/com.myself.menulet.plist <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" " http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Disabled</key> <false/> <key>KeepAlive</key> <true/> <key>Label</key> <string>com.myself.menulet</string> <key>ProgramArguments</key> <array> <string>/Library/Application Support/Applications/Menulet.app/Contents/MacOS/Menulet</string> </array> <key>QueueDirectories</key> <array/> <key>RunAtLoad</key> <true/> </dict> </plist> should i add any other key to this plist. i did go through this technical document and decided not to add "LimitLoadtoSessionType" since by default Aqua is selected. http://developer.apple.com/technotes/tn2005/tn2083.html#SECWINDOWSERVERLIFE… Please help ~Arjun

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