Source file src/pkg/net/udpsock.go
1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // UDP sockets 6 7 package net 8 9 // UDPAddr represents the address of a UDP end point. 10 type UDPAddr struct { 11 IP IP 12 Port int 13 } 14 15 // Network returns the address's network name, "udp". 16 func (a *UDPAddr) Network() string { return "udp" } 17 18 func (a *UDPAddr) String() string { 19 if a == nil { 20 return "<nil>" 21 } 22 return JoinHostPort(a.IP.String(), itoa(a.Port)) 23 } 24 25 // ResolveUDPAddr parses addr as a UDP address of the form 26 // host:port and resolves domain names or port names to 27 // numeric addresses on the network net, which must be "udp", 28 // "udp4" or "udp6". A literal IPv6 host address must be 29 // enclosed in square brackets, as in "[::]:80". 30 func ResolveUDPAddr(net, addr string) (*UDPAddr, error) { 31 ip, port, err := hostPortToIP(net, addr) 32 if err != nil { 33 return nil, err 34 } 35 return &UDPAddr{ip, port}, nil 36 }