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.
9 var ErrWriteToConnected
= errors
.New("use of WriteTo with pre-connected UDP")
11 // UDPAddr represents the address of a UDP end point.
15 Zone
string // IPv6 scoped addressing zone
18 // Network returns the address's network name, "udp".
19 func (a
*UDPAddr
) Network() string { return "udp" }
21 func (a
*UDPAddr
) String() string {
26 return JoinHostPort(a
.IP
.String()+"%"+a
.Zone
, itoa(a
.Port
))
28 return JoinHostPort(a
.IP
.String(), itoa(a
.Port
))
31 // ResolveUDPAddr parses addr as a UDP address of the form "host:port"
32 // or "[ipv6-host%zone]:port" and resolves a pair of domain name and
33 // port name on the network net, which must be "udp", "udp4" or
34 // "udp6". A literal address or host name for IPv6 must be enclosed
35 // in square brackets, as in "[::1]:80", "[ipv6-host]:http" or
36 // "[ipv6-host%zone]:80".
37 func ResolveUDPAddr(net
, addr
string) (*UDPAddr
, error
) {
39 case "udp", "udp4", "udp6":
40 case "": // a hint wildcard for Go 1.0 undocumented behavior
43 return nil, UnknownNetworkError(net
)
45 a
, err
:= resolveInternetAddr(net
, addr
, noDeadline
)
49 return a
.(*UDPAddr
), nil