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 !nacl,!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 TestUnixgramAutobind(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 TestUnixAutobindClose(t *testing.T) {
 143         if runtime.GOOS != "linux" {
 144                 t.Skip("skipping: autobind is linux only")
 145         }
 146         laddr := &UnixAddr{Name: "", Net: "unix"}
 147         ln, err := ListenUnix("unix", laddr)
 148         if err != nil {
 149                 t.Fatalf("ListenUnix failed: %v", err)
 150         }
 151         ln.Close()
 152 }
 153
 154 func TestUnixgramWrite(t *testing.T) {
 155         addr := testUnixAddr()
 156         laddr, err := ResolveUnixAddr("unixgram", addr)
 157         if err != nil {
 158                 t.Fatalf("ResolveUnixAddr failed: %v", err)
 159         }
 160         c, err := ListenPacket("unixgram", addr)
 161         if err != nil {
 162                 t.Fatalf("ListenPacket failed: %v", err)
 163         }
 164         defer os.Remove(addr)
 165         defer c.Close()
 166
 167         testUnixgramWriteConn(t, laddr)
 168         testUnixgramWritePacketConn(t, laddr)
 169 }
 170
 171 func testUnixgramWriteConn(t *testing.T, raddr *UnixAddr) {
 172         c, err := Dial("unixgram", raddr.String())
 173         if err != nil {
 174                 t.Fatalf("Dial failed: %v", err)
 175         }
 176         defer c.Close()
 177
 178         if _, err := c.(*UnixConn).WriteToUnix([]byte("Connection-oriented mode socket"), raddr); err == nil {
 179                 t.Fatal("WriteToUnix should fail")
 180         } else if err.(*OpError).Err != ErrWriteToConnected {
 181                 t.Fatalf("WriteToUnix should fail as ErrWriteToConnected: %v", err)
 182         }
 183         if _, err = c.(*UnixConn).WriteTo([]byte("Connection-oriented mode socket"), raddr); err == nil {
 184                 t.Fatal("WriteTo should fail")
 185         } else if err.(*OpError).Err != ErrWriteToConnected {
 186                 t.Fatalf("WriteTo should fail as ErrWriteToConnected: %v", err)
 187         }
 188         if _, _, err = c.(*UnixConn).WriteMsgUnix([]byte("Connection-oriented mode socket"), nil, raddr); err == nil {
 189                 t.Fatal("WriteTo should fail")
 190         } else if err.(*OpError).Err != ErrWriteToConnected {
 191                 t.Fatalf("WriteMsgUnix should fail as ErrWriteToConnected: %v", err)
 192         }
 193         if _, err := c.Write([]byte("Connection-oriented mode socket")); err != nil {
 194                 t.Fatalf("Write failed: %v", err)
 195         }
 196 }
 197
 198 func testUnixgramWritePacketConn(t *testing.T, raddr *UnixAddr) {
 199         addr := testUnixAddr()
 200         c, err := ListenPacket("unixgram", addr)
 201         if err != nil {
 202                 t.Fatalf("ListenPacket failed: %v", err)
 203         }
 204         defer os.Remove(addr)
 205         defer c.Close()
 206
 207         if _, err := c.(*UnixConn).WriteToUnix([]byte("Connectionless mode socket"), raddr); err != nil {
 208                 t.Fatalf("WriteToUnix failed: %v", err)
 209         }
 210         if _, err := c.WriteTo([]byte("Connectionless mode socket"), raddr); err != nil {
 211                 t.Fatalf("WriteTo failed: %v", err)
 212         }
 213         if _, _, err := c.(*UnixConn).WriteMsgUnix([]byte("Connectionless mode socket"), nil, raddr); err != nil {
 214                 t.Fatalf("WriteMsgUnix failed: %v", err)
 215         }
 216         if _, err := c.(*UnixConn).Write([]byte("Connectionless mode socket")); err == nil {
 217                 t.Fatal("Write should fail")
 218         }
 219 }
 220
 221 func TestUnixConnLocalAndRemoteNames(t *testing.T) {
 222         for _, laddr := range []string{"", testUnixAddr()} {
 223                 laddr := laddr
 224                 taddr := testUnixAddr()
 225                 ta, err := ResolveUnixAddr("unix", taddr)
 226                 if err != nil {
 227                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 228                 }
 229                 ln, err := ListenUnix("unix", ta)
 230                 if err != nil {
 231                         t.Fatalf("ListenUnix failed: %v", err)
 232                 }
 233                 defer func() {
 234                         ln.Close()
 235                         os.Remove(taddr)
 236                 }()
 237
 238                 done := make(chan int)
 239                 go transponder(t, ln, done)
 240
 241                 la, err := ResolveUnixAddr("unix", laddr)
 242                 if err != nil {
 243                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 244                 }
 245                 c, err := DialUnix("unix", la, ta)
 246                 if err != nil {
 247                         t.Fatalf("DialUnix failed: %v", err)
 248                 }
 249                 defer func() {
 250                         c.Close()
 251                         if la != nil {
 252                                 defer os.Remove(laddr)
 253                         }
 254                 }()
 255                 if _, err := c.Write([]byte("UNIXCONN LOCAL AND REMOTE NAME TEST")); err != nil {
 256                         t.Fatalf("UnixConn.Write failed: %v", err)
 257                 }
 258
 259                 if runtime.GOOS == "linux" && laddr == "" {
 260                         laddr = "@" // autobind feature
 261                 }
 262                 var connAddrs = [3]struct{ got, want Addr }{
 263                         {ln.Addr(), ta},
 264                         {c.LocalAddr(), &UnixAddr{Name: laddr, Net: "unix"}},
 265                         {c.RemoteAddr(), ta},
 266                 }
 267                 for _, ca := range connAddrs {
 268                         if !reflect.DeepEqual(ca.got, ca.want) {
 269                                 t.Fatalf("got %#v, expected %#v", ca.got, ca.want)
 270                         }
 271                 }
 272
 273                 <-done
 274         }
 275 }
 276
 277 func TestUnixgramConnLocalAndRemoteNames(t *testing.T) {
 278         for _, laddr := range []string{"", testUnixAddr()} {
 279                 laddr := laddr
 280                 taddr := testUnixAddr()
 281                 ta, err := ResolveUnixAddr("unixgram", taddr)
 282                 if err != nil {
 283                         t.Fatalf("ResolveUnixAddr failed: %v", err)
 284                 }
 285                 c1, err := ListenUnixgram("unixgram", ta)
 286                 if err != nil {
 287                         t.Fatalf("ListenUnixgram failed: %v", err)
 288                 }
 289                 defer func() {
 290                         c1.Close()
 291                         os.Remove(taddr)
 292                 }()
 293
 294                 var la *UnixAddr
 295                 if laddr != "" {
 296                         if la, err = ResolveUnixAddr("unixgram", laddr); err != nil {
 297                                 t.Fatalf("ResolveUnixAddr failed: %v", err)
 298                         }
 299                 }
 300                 c2, err := DialUnix("unixgram", la, ta)
 301                 if err != nil {
 302                         t.Fatalf("DialUnix failed: %v", err)
 303                 }
 304                 defer func() {
 305                         c2.Close()
 306                         if la != nil {
 307                                 defer os.Remove(laddr)
 308                         }
 309                 }()
 310
 311                 if runtime.GOOS == "linux" && laddr == "" {
 312                         laddr = "@" // autobind feature
 313                 }
 314                 var connAddrs = [4]struct{ got, want Addr }{
 315                         {c1.LocalAddr(), ta},
 316                         {c1.RemoteAddr(), nil},
 317                         {c2.LocalAddr(), &UnixAddr{Name: laddr, Net: "unixgram"}},
 318                         {c2.RemoteAddr(), ta},
 319                 }
 320                 for _, ca := range connAddrs {
 321                         if !reflect.DeepEqual(ca.got, ca.want) {
 322                                 t.Fatalf("got %#v, expected %#v", ca.got, ca.want)
 323                         }
 324                 }
 325         }
 326 }