On 26 Apr 2016, at 18:11, Sebastien Boisvert <sebastienboisvert@yahoo.com> wrote:

Specifically, I'm wondering if I invalidate an existing session (using something like -finishTasksAndInvalidate), then bring up a new one with the same identifier/configuration (while the first might still have its tasks going), if this is safe to do so.

That depends on /when/ you bring up the new session. The sequence create-gen-1 > invalidate > create-gen-2 is fine as long as you do the create-gen-2 after -URLSession:didBecomeInvalidWithError: has been called. The problem you’re going to have here is that, if there are tasks running, -finishTasksAndInvalidate won’t trigger the actual invalidate until all the tasks are done. Look at this from the perspective of `nsurlsessiond`. It uses the session identifier to track the session internally. Thus, it makes sense that you can’t create “foo” gen-2 while tasks are running in “foo” gen-1. Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40lists... This email sent to site_archiver@lists.apple.com