22 lines
651 B
Go
22 lines
651 B
Go
// Copyright 2011 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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/*
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#include <netdb.h>
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*/
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import "syscall"
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func cgoAddrInfoFlags() int {
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// NOTE(rsc): In theory there are approximately balanced
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// arguments for and against including AI_ADDRCONFIG
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// in the flags (it includes IPv4 results only on IPv4 systems,
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// and similarly for IPv6), but in practice setting it causes
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// getaddrinfo to return the wrong canonical name on Linux.
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// So definitely leave it out.
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return syscall.AI_CANONNAME | syscall.AI_V4MAPPED | syscall.AI_ALL
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}
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