1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
// Copyright 2010 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.
package net
// IPAddr represents the address of an IP end point.
type IPAddr struct {
IP IP
Zone string // IPv6 scoped addressing zone
}
// Network returns the address's network name, "ip".
func (a *IPAddr) Network() string { return "ip" }
func (a *IPAddr) String() string {
if a == nil {
return "<nil>"
}
ip := ipEmptyString(a.IP)
if a.Zone != "" {
return ip + "%" + a.Zone
}
return ip
}
func (a *IPAddr) isWildcard() bool {
if a == nil || a.IP == nil {
return true
}
return a.IP.IsUnspecified()
}
func (a *IPAddr) opAddr() Addr {
if a == nil {
return nil
}
return a
}
// ResolveIPAddr parses addr as an IP address of the form "host" or
// "ipv6-host%zone" and resolves the domain name on the network net,
// which must be "ip", "ip4" or "ip6".
func ResolveIPAddr(net, addr string) (*IPAddr, error) {
if net == "" { // a hint wildcard for Go 1.0 undocumented behavior
net = "ip"
}
afnet, _, err := parseNetwork(net)
if err != nil {
return nil, err
}
switch afnet {
case "ip", "ip4", "ip6":
default:
return nil, UnknownNetworkError(net)
}
addrs, err := internetAddrList(afnet, addr, noDeadline)
if err != nil {
return nil, err
}
return addrs.first(isIPv4).(*IPAddr), nil
}
|
