static void LibeventReceiveCallback(int fd, short event, void *arg);
static void RecvDatagram (evutil_socket_t socket); // Called by LibeventReceiveCallback
static int RecvFrom(evutil_socket_t sock, Address& addr, struct evbuffer **evb); // Called by RecvDatagram
static void LibeventReceiveCallback(int fd, short event, void *arg);
static void RecvDatagram (evutil_socket_t socket); // Called by LibeventReceiveCallback
static int RecvFrom(evutil_socket_t sock, Address& addr, struct evbuffer **evb); // Called by RecvDatagram