I’m just trying to get started with rust, and (having now translated into rust the NaCl crypto library for practice), and starting looking at network programming using UDP. I am immediately halted by the lack of any equivalent of INADDR_ANY, with no documentation indicating how to get this functionality. I know it has a value of 0 (or 0.0.0.0), at least on linux, but am uncomfortable with regard to portability. Am I missing something here? I presume that I can just specify 0.0.0.0 as an address, but is there some reason that no such constant is provided in rust?