async_context_threadsafe_background_init_with_defaults() function
Initialize an async_context_threadsafe_background instance with default values If this method succeeds (returns true), then the async_context is available for use and can be de-initialized by calling async_context_deinit().
Initialize an async_context_threadsafe_background instance using the specified configuration If this method succeeds (returns true), then the async_context is available for use and can be de-initialized by calling async_context_deinit().