Inside Macintosh: Networking With Open Transport / Part 2 - Open Transport Reference

Chapter 21 - Providers Reference / Functions

Using Notifier Functions

To receive notice of provider events, you must install a notifier function. If the provider was opened synchronously, you do this by calling the OTInstallNotifier function. If the provider was opened asynchronously, you install the notifier by passing a pointer to the notifier function as a parameter to the function used to open the provider. To remove a notifier function, call the OTRemoveNotifier function.

You can use the OTUseSyncIdleEvents function to send idle events to your notifier.