site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Apr 25, 2006, at 12:51 PM, Dave Zarzycki wrote: Kevin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... On Apr 25, 2006, at 10:35 AM, Kevin Brock wrote: On Apr 25, 2006, at 8:17 AM, Dave Zarzycki wrote: Also please please please don't ever assume that only one socket is in the array. I really want system administrators to feel that they can add additional socket declarations to jobs and "everything should just work (TM)." :-) I'm not sure that I agree with this in every case. If a daemon is listening on a particular socket, and the framework used to write an app that uses this daemon also uses a particular socket, then the admin really shouldn't be messing with it. I'd guess you're talking about the case where they want the daemon to be listening to an additional socket... Not a lot of justifiable reasons for doing that, but I'll look at modifying the code to handle it. This really is more applicable to networking. Imagine for a second a socket definition that says listen on any interface on IPv4 or IPv6. That will generate two descriptors. The system administrator might then change the configuration file to listen on IPv4 on interface A and B and IPv6 on interface B and C. Now we have four sockets, all the while, the daemon is blissfully unaware. I agree. For networking it's really a good idea. All my daemon is doing is local IPC, so it's not really relevant in this case. If I need to handle remote connections later it'll be a different (and messier) story. The comment in the header says that calling launch_msg() with no message is a way to receive asynchronous messages. Polling this seems clunky... Is there a way to register a callback for asynchronous messages? Yes, that's what launch_get_fd() is for. I'm not sure I see how this works. In the header, launch_get_fd takes no arguments, so I can't use it to register a callback. It looks as though, if I call it at the right time, it will return a file descriptor. It's not clear what context it should be called in, or what fiel descriptor it will return... It *does* look as though I have to poll it. This email sent to site_archiver@lists.apple.com