/usr/share/gocode/src/code.google.com/p/go.net/ipv6/mocktransponder_test.go is in golang-go.net-dev 0.0~hg20131201-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | // Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6_test
import (
"net"
"testing"
)
func isLinkLocalUnicast(ip net.IP) bool {
return ip.To4() == nil && ip.To16() != nil && ip.IsLinkLocalUnicast()
}
func loopbackInterface() *net.Interface {
ift, err := net.Interfaces()
if err != nil {
return nil
}
for _, ifi := range ift {
if ifi.Flags&net.FlagLoopback == 0 || ifi.Flags&net.FlagUp == 0 {
continue
}
ifat, err := ifi.Addrs()
if err != nil {
continue
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *net.IPAddr:
if isLinkLocalUnicast(ifa.IP) {
return &ifi
}
case *net.IPNet:
if isLinkLocalUnicast(ifa.IP) {
return &ifi
}
}
}
}
return nil
}
func isMulticastAvailable(ifi *net.Interface) (net.IP, bool) {
if ifi == nil || ifi.Flags&net.FlagUp == 0 || ifi.Flags&net.FlagMulticast == 0 {
return nil, false
}
ifat, err := ifi.Addrs()
if err != nil {
return nil, false
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *net.IPAddr:
if isLinkLocalUnicast(ifa.IP) {
return ifa.IP, true
}
case *net.IPNet:
if isLinkLocalUnicast(ifa.IP) {
return ifa.IP, true
}
}
}
return nil, false
}
func connector(t *testing.T, network, addr string, done chan<- bool) {
defer func() { done <- true }()
c, err := net.Dial(network, addr)
if err != nil {
t.Errorf("net.Dial failed: %v", err)
return
}
c.Close()
}
func acceptor(t *testing.T, ln net.Listener, done chan<- bool) {
defer func() { done <- true }()
c, err := ln.Accept()
if err != nil {
t.Errorf("net.Listener.Accept failed: %v", err)
return
}
c.Close()
}
func transponder(t *testing.T, ln net.Listener, done chan<- bool) {
defer func() { done <- true }()
c, err := ln.Accept()
if err != nil {
t.Errorf("net.Listener.Accept failed: %v", err)
return
}
defer c.Close()
b := make([]byte, 128)
n, err := c.Read(b)
if err != nil {
t.Errorf("net.Conn.Read failed: %v", err)
return
}
if _, err := c.Write(b[:n]); err != nil {
t.Errorf("net.Conn.Write failed: %v", err)
return
}
}
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