I need to intercept traffic (by port range) and need to have ability to modify it. If I understand correctly, the best way is to use NETransparentProxyProvider for this purpose. Is my understanding correct? I am trying to figure out how to make system extension (NETransparentProxyProvider) intercept the traffic. Unfortunately I have not found any description or example (similar to Network Filter). I am novice in Network Extension. Are there any guide, example or quick start how to implement app proxy? Thank you!

Hello, I need to monitor input events and convert keycode to symbol. E.g. convert kHIDUsage_KeyboardQ to symbol according to used keyboard layout. Are there any API to get current keyboard layout (language) in C++? If I understand correctly, the API TISGetInputSourceProperty() is deprecated. Are there any way to monitor keyboard layout changed? (some system notification in case of keyboard layout change) Are there any way to translate keycode to symbol except UCKeyTranslate() which is part of deprecated Unicode Utilities? Thank you in advance.