55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
// Copyright 2009 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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// UDPAddr represents the address of a UDP end point.
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type UDPAddr struct {
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IP IP
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Port int
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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, "udp".
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func (a *UDPAddr) Network() string { return "udp" }
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func (a *UDPAddr) String() string {
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if a == nil {
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return "<nil>"
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}
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ip := ipEmptyString(a.IP)
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if a.Zone != "" {
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return JoinHostPort(ip+"%"+a.Zone, itoa(a.Port))
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}
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return JoinHostPort(ip, itoa(a.Port))
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}
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func (a *UDPAddr) 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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// ResolveUDPAddr parses addr as a UDP address of the form "host:port"
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// or "[ipv6-host%zone]:port" and resolves a pair of domain name and
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// port name on the network net, which must be "udp", "udp4" or
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// "udp6". A literal address or host name for IPv6 must be enclosed
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// in square brackets, as in "[::1]:80", "[ipv6-host]:http" or
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// "[ipv6-host%zone]:80".
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func ResolveUDPAddr(net, addr string) (*UDPAddr, error) {
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switch net {
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case "udp", "udp4", "udp6":
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case "": // a hint wildcard for Go 1.0 undocumented behavior
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net = "udp"
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default:
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return nil, UnknownNetworkError(net)
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}
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a, err := resolveInternetAddr(net, 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().(*UDPAddr), nil
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}
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