libgo/go/net/cgo_linux.go

   1 // Copyright 2011 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build !android,cgo,!netgo
   6
   7 package net
   8
   9 /*
  10 #include <netdb.h>
  11 */
  12
  13 import "syscall"
  14
  15 // NOTE(rsc): In theory there are approximately balanced
  16 // arguments for and against including AI_ADDRCONFIG
  17 // in the flags (it includes IPv4 results only on IPv4 systems,
  18 // and similarly for IPv6), but in practice setting it causes
  19 // getaddrinfo to return the wrong canonical name on Linux.
  20 // So definitely leave it out.
  21 const cgoAddrInfoFlags = syscall.AI_CANONNAME | syscall.AI_V4MAPPED | syscall.AI_ALL