Listen all UDP ports for specified address

[usamytch]

Good day, colleagues!

I have a network device with loopback function. I have to send UDP packets to it and receive they back and check. The problem is that device send me packets back to arbitrary UDP port which I can't know beforehand.

So is it possible to listen all UDP ports for specified address?

[Franzk]

Usually one would listen at port 0.

[goetz]

You cannot listen on all ports with a single socket.

If you listen on port 0, on Unix(like) systems, you usually get a random (not yet used) port that this port listens to (cf. "this article":http://compnetworking.about.com/od/tcpip/p/port-numbers-0.htm)