mirror of
https://github.com/golang/go
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41 lines
1.0 KiB
Go
41 lines
1.0 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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// UDP sockets
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package net
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import "errors"
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var ErrWriteToConnected = errors.New("use of WriteTo with pre-connected UDP")
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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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}
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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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return JoinHostPort(a.IP.String(), itoa(a.Port))
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}
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// ResolveUDPAddr parses addr as a UDP address of the form
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// host:port and resolves domain names or port names to
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// numeric addresses on the network net, which must be "udp",
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// "udp4" or "udp6". A literal IPv6 host address must be
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// enclosed in square brackets, as in "[::]:80".
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func ResolveUDPAddr(net, addr string) (*UDPAddr, error) {
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ip, port, err := hostPortToIP(net, addr)
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if err != nil {
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return nil, err
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}
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return &UDPAddr{ip, port}, nil
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}
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