55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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// IPAddr represents the address of an IP end point.
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type IPAddr struct {
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IP IP
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Zone string // IPv6 scoped addressing zone
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}
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// Network returns the address's network name, "ip".
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func (a *IPAddr) Network() string { return "ip" }
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func (a *IPAddr) String() string {
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if a == nil {
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return "<nil>"
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}
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if a.Zone != "" {
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return a.IP.String() + "%" + a.Zone
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}
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return a.IP.String()
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}
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func (a *IPAddr) toAddr() Addr {
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if a == nil {
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return nil
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}
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return a
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}
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// ResolveIPAddr parses addr as an IP address of the form "host" or
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// "ipv6-host%zone" and resolves the domain name on the network net,
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// which must be "ip", "ip4" or "ip6".
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func ResolveIPAddr(net, addr string) (*IPAddr, error) {
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if net == "" { // a hint wildcard for Go 1.0 undocumented behavior
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net = "ip"
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}
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afnet, _, err := parseNetwork(net)
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if err != nil {
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return nil, err
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}
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switch afnet {
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case "ip", "ip4", "ip6":
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default:
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return nil, UnknownNetworkError(net)
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}
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a, err := resolveInternetAddr(afnet, addr, noDeadline)
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if err != nil {
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return nil, err
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}
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return a.toAddr().(*IPAddr), nil
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}
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