UdpSocket

(Fn [(Ref String a), Int] (Result UdpSocket String))

                        (bind addr port)
                    

binds a UDP socket to the given address and port. Returns (Result UdpSocket String).

(Fn [UdpSocket] ())

closes the UDP socket.

(Fn [(Ref UdpSocket a)] UdpSocket)

(Fn [(Ref UdpSocket a)] Int)

returns the port the socket is bound to. Useful after binding to port 0 to discover the OS-assigned port.

(Fn [(Ref UdpSocket a)] Int)

                        (poll-fd s)
                    

(Fn [(Ref UdpSocket a)] (Result (Pair (Array Byte) String) String))

                        (recv-from sock)
                    

receives a datagram and the sender's address. Returns (Result (Pair (Array Byte) String) String) where the string is the sender's address in ip:port format.

(Fn [(Ref UdpSocket a), (Ref String b), Int, (Ref (Array Byte) c)] (Result Int String))

                        (send-to sock host port data)
                    

sends data to a remote address. Returns bytes sent or an error.

(Fn [(Ref UdpSocket a), Int] ())

sets read and write timeouts in seconds.