libgo/go/net/unix_test.go

   1 // Copyright 2013 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 !plan9,!windows
   6
   7 package net
   8
   9 import (
  10         "bytes"
  11         "os"
  12         "reflect"
  13         "runtime"
  14         "syscall"
  15         "testing"
  16         "time"
  17 )
  18
  19 func TestReadUnixgramWithUnnamedSocket(t *testing.T) {
  20         addr := testUnixAddr()
  21         la, err := ResolveUnixAddr("unixgram", addr)
  22         if err != nil {
  23                 t.Fatalf("ResolveUnixAddr failed: %v", err)
  24         }
  25         c, err := ListenUnixgram("unixgram", la)
  26         if err != nil {
  27                 t.Fatalf("ListenUnixgram failed: %v", err)
  28         }
  29         defer func() {
  30                 c.Close()
  31                 os.Remove(addr)
  32         }()
  33
  34         off := make(chan bool)
  35         data := [5]byte{1, 2, 3, 4, 5}
  36         go func() {
  37                 defer func() { off <- true }()
  38                 s, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_DGRAM, 0)
  39                 if err != nil {
  40                         t.Errorf("syscall.Socket failed: %v", err)
  41                         return
  42                 }
  43                 defer syscall.Close(s)
  44                 rsa := &syscall.SockaddrUnix{Name: addr}
  45                 if err := syscall.Sendto(s, data[:], 0, rsa); err != nil {
  46                         t.Errorf("syscall.Sendto failed: %v", err)
  47                         return
  48                 }
  49         }()
  50
  51         <-off
  52         b := make([]byte, 64)
  53         c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
  54         n, from, err := c.ReadFrom(b)
  55         if err != nil {
  56                 t.Fatalf("UnixConn.ReadFrom failed: %v", err)
  57         }
  58         if from != nil {
  59                 t.Fatalf("neighbor address is %v", from)
  60         }
  61         if !bytes.Equal(b[:n], data[:]) {
  62                 t.Fatalf("got %v, want %v", b[:n], data[:])
  63         }
  64 }
  65
  66 func TestReadUnixgramWithZeroBytesBuffer(t *testing.T) {
  67         // issue 4352: Recvfrom failed with "address family not
  68         // supported by protocol family" if zero-length buffer provided
  69
  70         addr := testUnixAddr()
  71         la, err := ResolveUnixAddr("unixgram", addr)
  72         if err != nil {
  73                 t.Fatalf("ResolveUnixAddr failed: %v", err)
  74         }
  75         c, err := ListenUnixgram("unixgram", la)
  76         if err != nil {
  77                 t.Fatalf("ListenUnixgram failed: %v", err)
  78         }
  79         defer func() {
  80                 c.Close()
  81                 os.Remove(addr)
  82         }()
  83
  84         off := make(chan bool)
  85         go func() {
  86                 defer func() { off <- true }()
  87                 c, err := DialUnix("unixgram", nil, la)
  88                 if err != nil {
  89                         t.Errorf("DialUnix failed: %v", err)
  90                         return
  91                 }
  92                 defer c.Close()
  93                 if _, err := c.Write([]byte{1, 2, 3, 4, 5}); err != nil {
  94                         t.Errorf("UnixConn.Write failed: %v", err)
  95                         return
  96                 }
  97         }()
  98
  99         <-off
 100         c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
 101         _, from, err := c.ReadFrom(nil)
 102         if err != nil {
 103                 t.Fatalf("UnixConn.ReadFrom failed: %v", err)
 104         }
 105         if from != nil {
 106                 t.Fatalf("neighbor address is %v", from)
 107         }
 108 }
 109
 110 func TestUnixAutobind(t *testing.T) {
 111         if runtime.GOOS != "linux" {
 112                 t.Skip("skipping: autobind is linux only")
 113         }
 114
 115         laddr := &UnixAddr{Name: "", Net: "unixgram"}
 116         c1, err := ListenUnixgram("unixgram", laddr)
 117         if err != nil {
 118                 t.Fatalf("ListenUnixgram failed: %v", err)
 119         }
 120         defer c1.Close()
 121
 122         // retrieve the autobind address
 123         autoAddr := c1.LocalAddr().(*UnixAddr)
 124         if len(autoAddr.Name) <= 1 {
 125                 t.Fatalf("invalid autobind address: %v", autoAddr)
 126         }
 127         if autoAddr.Name[0] != '@' {
 128                 t.Fatalf("invalid autobind address: %v", autoAddr)
 129         }
 130
 131         c2, err := DialUnix("unixgram", nil, autoAddr)
 132         if err != nil {
 133                 t.Fatalf("DialUnix failed: %v", err)
 134         }
 135         defer c2.Close()
 136
 137         if !reflect.DeepEqual(c1.LocalAddr(), c2.RemoteAddr()) {
 138                 t.Fatalf("expected autobind address %v, got %v", c1.LocalAddr(), c2.RemoteAddr())
 139         }
 140 }
 141
 142 func TestUnixConnLocalAndRemoteNames(t *testing.T) {
 143         for _, laddr := range []string{"", testUnixAddr()} {
 144                 taddr := testUnixAddr()
 145                 ta, err := ResolveUnixAddr("unix", taddr)
 146                 if err != nil {
 147                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 148                 }
 149                 ln, err := ListenUnix("unix", ta)
 150                 if err != nil {
 151                         t.Fatalf("ListenUnix failed: %v", err)
 152                 }
 153                 defer func() {
 154                         ln.Close()
 155                         os.Remove(taddr)
 156                 }()
 157
 158                 done := make(chan int)
 159                 go transponder(t, ln, done)
 160
 161                 la, err := ResolveUnixAddr("unix", laddr)
 162                 if err != nil {
 163                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 164                 }
 165                 c, err := DialUnix("unix", la, ta)
 166                 if err != nil {
 167                         t.Fatalf("DialUnix failed: %v", err)
 168                 }
 169                 defer func() {
 170                         c.Close()
 171                         if la != nil {
 172                                 defer os.Remove(laddr)
 173                         }
 174                 }()
 175                 if _, err := c.Write([]byte("UNIXCONN LOCAL AND REMOTE NAME TEST")); err != nil {
 176                         t.Fatalf("UnixConn.Write failed: %v", err)
 177                 }
 178
 179                 if runtime.GOOS == "linux" && laddr == "" {
 180                         laddr = "@" // autobind feature
 181                 }
 182                 var connAddrs = [3]struct{ got, want Addr }{
 183                         {ln.Addr(), ta},
 184                         {c.LocalAddr(), &UnixAddr{Name: laddr, Net: "unix"}},
 185                         {c.RemoteAddr(), ta},
 186                 }
 187                 for _, ca := range connAddrs {
 188                         if !reflect.DeepEqual(ca.got, ca.want) {
 189                                 t.Fatalf("got %#v, expected %#v", ca.got, ca.want)
 190                         }
 191                 }
 192
 193                 <-done
 194         }
 195 }
 196
 197 func TestUnixgramConnLocalAndRemoteNames(t *testing.T) {
 198         for _, laddr := range []string{"", testUnixAddr()} {
 199                 taddr := testUnixAddr()
 200                 ta, err := ResolveUnixAddr("unixgram", taddr)
 201                 if err != nil {
 202                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 203                 }
 204                 c1, err := ListenUnixgram("unixgram", ta)
 205                 if err != nil {
 206                         t.Fatalf("ListenUnixgram failed: %v", err)
 207                 }
 208                 defer func() {
 209                         c1.Close()
 210                         os.Remove(taddr)
 211                 }()
 212
 213                 var la *UnixAddr
 214                 if laddr != "" {
 215                         var err error
 216                         if la, err = ResolveUnixAddr("unixgram", laddr); err != nil {
 217                                 t.Fatalf("ResolveUnixAddr failed: %v", err)
 218                         }
 219                 }
 220                 c2, err := DialUnix("unixgram", la, ta)
 221                 if err != nil {
 222                         t.Fatalf("DialUnix failed: %v", err)
 223                 }
 224                 defer func() {
 225                         c2.Close()
 226                         if la != nil {
 227                                 defer os.Remove(laddr)
 228                         }
 229                 }()
 230
 231                 if runtime.GOOS == "linux" && laddr == "" {
 232                         laddr = "@" // autobind feature
 233                 }
 234                 var connAddrs = [4]struct{ got, want Addr }{
 235                         {c1.LocalAddr(), ta},
 236                         {c1.RemoteAddr(), nil},
 237                         {c2.LocalAddr(), &UnixAddr{Name: laddr, Net: "unixgram"}},
 238                         {c2.RemoteAddr(), ta},
 239                 }
 240                 for _, ca := range connAddrs {
 241                         if !reflect.DeepEqual(ca.got, ca.want) {
 242                                 t.Fatalf("got %#v, expected %#v", ca.got, ca.want)
 243                         }
 244                 }
 245         }
 246 }