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// Copyright 2009 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// UDP sockets

package net

// UDPAddr represents the address of a UDP end point.
type UDPAddr struct {
        IP   IP
        Port int
}

// Network returns the address's network name, "udp".
func (a *UDPAddr) Network() string { return "udp" }

func (a *UDPAddr) String() string {
        if a == nil {
                return "<nil>"
        }
        return JoinHostPort(a.IP.String(), itoa(a.Port))
}

// ResolveUDPAddr parses addr as a UDP address of the form
// host:port and resolves domain names or port names to
// numeric addresses on the network net, which must be "udp",
// "udp4" or "udp6".  A literal IPv6 host address must be
// enclosed in square brackets, as in "[::]:80".
func ResolveUDPAddr(net, addr string) (*UDPAddr, error) {
        ip, port, err := hostPortToIP(net, addr)
        if err != nil {
                return nil, err
        }
        return &UDPAddr{ip, port}, nil
}