Macro unique_port::generate_unique_start_port

macro_rules! generate_unique_start_port {
    () => { ... };
}

Generates a unique offset, from which get_unique_free_port will start to find free ports incrementally. The value is higher than 1000, and less than u16::MAX - 1000. It uses the full module path and the enclosed function name, so it’s always the same for the scope of the same function.