Allows you to set the selector to be used when a transport connection is opened, or fails to open.
- macOS 10.2+
Selector to call on the target.
Target to be called with the selector.
User's refCon that will get passed to them when their selector is invoked.
You do not need to call this on the session typically, unless you have subclassed the OBEXSession to implement a new transport and that transport supports async opening of connections. If it does not support async open, then using this is pointless.