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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 ""

        }

        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

}