Unbind all addresses from the given channel.
void SDLNet_UDP_Unbind(UDPsocket sock, int channel);
|sock||the UDP socket to unbind addresses from a channel on.|
|channel||the channel of the socket to unbind.|
Note that UDP sockets at the platform layer "bind" to a nework port number, but SDL_net's UDP sockets also "bind" to a "channel" on top of that, with SDLNet_UDP_Bind(). But the term is used for both.
This function is available since SDL_net 2.0.0.