Do you have to be able to get at the data when you're not connected to the Internet? If not, you could store it on an HTTP server.
Do shared memory segments work on iOS? I would expect not because of the sandbox, but maybe they do. Do localhost (127.0.0.1) TCP sockets work between two different apps? Now here's why sandboxing really cannot hope to keep two apps from communicating: In military security, one has to have the proper clearance (Secret, Top Secret), "compartment", and one must have a "need to know" to do one's official job. One is not permitted to store data from two different compartments on the same computer. For example if you design warheads, then you can't also have a design for a missile guidance system. Otherwise the two could communicate, and leak information out of the compartment, or to a lower clearance level. An example of this that I was once given, in a network security course at the 1989 Interop conference, is that a process in one compartment could exec a bunch of subprocesses, and then a process in a different compartment could examine the load average. They could then send binary bits back and forth, by exec'ing more or fewer subprocesses! One can't launch subprocesses on iOS, but one can launch threads, use up more or less memory, eat up more or less CPU time. Some wag wrote a Linux filesystem that stored one sector of data per GMail message. When you wanted to read a file, you'd just use POP to get the right message. If you can do that with GMail from the LInux kernel, there simply has to be a way for your apps to share data. (Bradley Manning's helpful contribution to WikiLeaks shows that the DoD specifications for data security were being ignored. Those specs are still in force, just not applied in practice.) -- Michael David Crawford mdcrawford at gmail dot com Custom Software Development for the iPhone and Mac OS X http://www.dulcineatech.com/custom-software-development/ _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
