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 {
25 ip
:= ipEmptyString(a
.IP
)
27 return JoinHostPort(ip
+"%"+a
.Zone
, itoa(a
.Port
))
29 return JoinHostPort(ip
, itoa(a
.Port
))
32 func (a
*UDPAddr
) toAddr() Addr
{
39 // ResolveUDPAddr parses addr as a UDP address of the form "host:port"
40 // or "[ipv6-host%zone]:port" and resolves a pair of domain name and
41 // port name on the network net, which must be "udp", "udp4" or
42 // "udp6". A literal address or host name for IPv6 must be enclosed
43 // in square brackets, as in "[::1]:80", "[ipv6-host]:http" or
44 // "[ipv6-host%zone]:80".
45 func ResolveUDPAddr(net
, addr
string) (*UDPAddr
, error
) {
47 case "udp", "udp4", "udp6":
48 case "": // a hint wildcard for Go 1.0 undocumented behavior
51 return nil, UnknownNetworkError(net
)
53 a
, err
:= resolveInternetAddr(net
, addr
, noDeadline
)
57 return a
.toAddr().(*UDPAddr
), nil