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// 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.
// +build !js,!plan9,!windows
package net
import (
"bytes"
"internal/testenv"
"io/ioutil"
"os"
"reflect"
"runtime"
"syscall"
"testing"
"time"
)
func TestReadUnixgramWithUnnamedSocket(t *testing.T) {
if !testableNetwork("unixgram") {
t.Skip("unixgram test")
}
if runtime.GOOS == "openbsd" {
testenv.SkipFlaky(t, 15157)
}
addr := testUnixAddr()
la, err := ResolveUnixAddr("unixgram", addr)
if err != nil {
t.Fatal(err)
}
c, err := ListenUnixgram("unixgram", la)
if err != nil {
t.Fatal(err)
}
defer func() {
c.Close()
os.Remove(addr)
}()
off := make(chan bool)
data := [5]byte{1, 2, 3, 4, 5}
go func() {
defer func() { off <- true }()
s, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_DGRAM, 0)
if err != nil {
t.Error(err)
return
}
defer syscall.Close(s)
rsa := &syscall.SockaddrUnix{Name: addr}
if err := syscall.Sendto(s, data[:], 0, rsa); err != nil {
t.Error(err)
return
}
}()
<-off
b := make([]byte, 64)
c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
n, from, err := c.ReadFrom(b)
if err != nil {
t.Fatal(err)
}
if from != nil {
t.Fatalf("unexpected peer address: %v", from)
}
if !bytes.Equal(b[:n], data[:]) {
t.Fatalf("got %v; want %v", b[:n], data[:])
}
}
func TestUnixgramZeroBytePayload(t *testing.T) {
if !testableNetwork("unixgram") {
t.Skip("unixgram test")
}
c1, err := newLocalPacketListener("unixgram")
if err != nil {
t.Fatal(err)
}
defer os.Remove(c1.LocalAddr().String())
defer c1.Close()
c2, err := Dial("unixgram", c1.LocalAddr().String())
if err != nil {
t.Fatal(err)
}
defer os.Remove(c2.LocalAddr().String())
defer c2.Close()
for _, genericRead := range []bool{false, true} {
n, err := c2.Write(nil)
if err != nil {
t.Fatal(err)
}
if n != 0 {
t.Errorf("got %d; want 0", n)
}
c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
var b [1]byte
var peer Addr
if genericRead {
_, err = c1.(Conn).Read(b[:])
} else {
_, peer, err = c1.ReadFrom(b[:])
}
switch err {
case nil: // ReadFrom succeeds
if peer != nil { // peer is connected-mode
t.Fatalf("unexpected peer address: %v", peer)
}
default: // Read may timeout, it depends on the platform
if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
t.Fatal(err)
}
}
}
}
func TestUnixgramZeroByteBuffer(t *testing.T) {
if !testableNetwork("unixgram") {
t.Skip("unixgram test")
}
// issue 4352: Recvfrom failed with "address family not
// supported by protocol family" if zero-length buffer provided
c1, err := newLocalPacketListener("unixgram")
if err != nil {
t.Fatal(err)
}
defer os.Remove(c1.LocalAddr().String())
defer c1.Close()
c2, err := Dial("unixgram", c1.LocalAddr().String())
if err != nil {
t.Fatal(err)
}
defer os.Remove(c2.LocalAddr().String())
defer c2.Close()
b := []byte("UNIXGRAM ZERO BYTE BUFFER TEST")
for _, genericRead := range []bool{false, true} {
n, err := c2.Write(b)
if err != nil {
t.Fatal(err)
}
if n != len(b) {
t.Errorf("got %d; want %d", n, len(b))
}
c1.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
var peer Addr
if genericRead {
_, err = c1.(Conn).Read(nil)
} else {
_, peer, err = c1.ReadFrom(nil)
}
switch err {
case nil: // ReadFrom succeeds
if peer != nil { // peer is connected-mode
t.Fatalf("unexpected peer address: %v", peer)
}
default: // Read may timeout, it depends on the platform
if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
t.Fatal(err)
}
}
}
}
func TestUnixgramWrite(t *testing.T) {
if !testableNetwork("unixgram") {
t.Skip("unixgram test")
}
addr := testUnixAddr()
laddr, err := ResolveUnixAddr("unixgram", addr)
if err != nil {
t.Fatal(err)
}
c, err := ListenPacket("unixgram", addr)
if err != nil {
t.Fatal(err)
}
defer os.Remove(addr)
defer c.Close()
testUnixgramWriteConn(t, laddr)
testUnixgramWritePacketConn(t, laddr)
}
func testUnixgramWriteConn(t *testing.T, raddr *UnixAddr) {
c, err := Dial("unixgram", raddr.String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
b := []byte("CONNECTED-MODE SOCKET")
if _, err := c.(*UnixConn).WriteToUnix(b, raddr); err == nil {
t.Fatal("should fail")
} else if err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("should fail as ErrWriteToConnected: %v", err)
}
if _, err = c.(*UnixConn).WriteTo(b, raddr); err == nil {
t.Fatal("should fail")
} else if err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("should fail as ErrWriteToConnected: %v", err)
}
if _, _, err = c.(*UnixConn).WriteMsgUnix(b, nil, raddr); err == nil {
t.Fatal("should fail")
} else if err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("should fail as ErrWriteToConnected: %v", err)
}
if _, err := c.Write(b); err != nil {
t.Fatal(err)
}
}
func testUnixgramWritePacketConn(t *testing.T, raddr *UnixAddr) {
addr := testUnixAddr()
c, err := ListenPacket("unixgram", addr)
if err != nil {
t.Fatal(err)
}
defer os.Remove(addr)
defer c.Close()
b := []byte("UNCONNECTED-MODE SOCKET")
if _, err := c.(*UnixConn).WriteToUnix(b, raddr); err != nil {
t.Fatal(err)
}
if _, err := c.WriteTo(b, raddr); err != nil {
t.Fatal(err)
}
if _, _, err := c.(*UnixConn).WriteMsgUnix(b, nil, raddr); err != nil {
t.Fatal(err)
}
if _, err := c.(*UnixConn).Write(b); err == nil {
t.Fatal("should fail")
}
}
func TestUnixConnLocalAndRemoteNames(t *testing.T) {
if !testableNetwork("unix") {
t.Skip("unix test")
}
handler := func(ls *localServer, ln Listener) {}
for _, laddr := range []string{"", testUnixAddr()} {
laddr := laddr
taddr := testUnixAddr()
ta, err := ResolveUnixAddr("unix", taddr)
if err != nil {
t.Fatal(err)
}
ln, err := ListenUnix("unix", ta)
if err != nil {
t.Fatal(err)
}
ls, err := (&streamListener{Listener: ln}).newLocalServer()
if err != nil {
t.Fatal(err)
}
defer ls.teardown()
if err := ls.buildup(handler); err != nil {
t.Fatal(err)
}
la, err := ResolveUnixAddr("unix", laddr)
if err != nil {
t.Fatal(err)
}
c, err := DialUnix("unix", la, ta)
if err != nil {
t.Fatal(err)
}
defer func() {
c.Close()
if la != nil {
defer os.Remove(laddr)
}
}()
if _, err := c.Write([]byte("UNIXCONN LOCAL AND REMOTE NAME TEST")); err != nil {
t.Fatal(err)
}
switch runtime.GOOS {
case "android", "linux":
if laddr == "" {
laddr = "@" // autobind feature
}
}
var connAddrs = [3]struct{ got, want Addr }{
{ln.Addr(), ta},
{c.LocalAddr(), &UnixAddr{Name: laddr, Net: "unix"}},
{c.RemoteAddr(), ta},
}
for _, ca := range connAddrs {
if !reflect.DeepEqual(ca.got, ca.want) {
t.Fatalf("got %#v, expected %#v", ca.got, ca.want)
}
}
}
}
func TestUnixgramConnLocalAndRemoteNames(t *testing.T) {
if !testableNetwork("unixgram") {
t.Skip("unixgram test")
}
for _, laddr := range []string{"", testUnixAddr()} {
laddr := laddr
taddr := testUnixAddr()
ta, err := ResolveUnixAddr("unixgram", taddr)
if err != nil {
t.Fatal(err)
}
c1, err := ListenUnixgram("unixgram", ta)
if err != nil {
t.Fatal(err)
}
defer func() {
c1.Close()
os.Remove(taddr)
}()
var la *UnixAddr
if laddr != "" {
if la, err = ResolveUnixAddr("unixgram", laddr); err != nil {
t.Fatal(err)
}
}
c2, err := DialUnix("unixgram", la, ta)
if err != nil {
t.Fatal(err)
}
defer func() {
c2.Close()
if la != nil {
defer os.Remove(laddr)
}
}()
switch runtime.GOOS {
case "android", "linux":
if laddr == "" {
laddr = "@" // autobind feature
}
}
var connAddrs = [4]struct{ got, want Addr }{
{c1.LocalAddr(), ta},
{c1.RemoteAddr(), nil},
{c2.LocalAddr(), &UnixAddr{Name: laddr, Net: "unixgram"}},
{c2.RemoteAddr(), ta},
}
for _, ca := range connAddrs {
if !reflect.DeepEqual(ca.got, ca.want) {
t.Fatalf("got %#v; want %#v", ca.got, ca.want)
}
}
}
}
func TestUnixUnlink(t *testing.T) {
if !testableNetwork("unix") {
t.Skip("unix test")
}
name := testUnixAddr()
listen := func(t *testing.T) *UnixListener {
l, err := Listen("unix", name)
if err != nil {
t.Fatal(err)
}
return l.(*UnixListener)
}
checkExists := func(t *testing.T, desc string) {
if _, err := os.Stat(name); err != nil {
t.Fatalf("unix socket does not exist %s: %v", desc, err)
}
}
checkNotExists := func(t *testing.T, desc string) {
if _, err := os.Stat(name); err == nil {
t.Fatalf("unix socket does exist %s: %v", desc, err)
}
}
// Listener should remove on close.
t.Run("Listen", func(t *testing.T) {
l := listen(t)
checkExists(t, "after Listen")
l.Close()
checkNotExists(t, "after Listener close")
})
// FileListener should not.
t.Run("FileListener", func(t *testing.T) {
l := listen(t)
f, _ := l.File()
l1, _ := FileListener(f)
checkExists(t, "after FileListener")
f.Close()
checkExists(t, "after File close")
l1.Close()
checkExists(t, "after FileListener close")
l.Close()
checkNotExists(t, "after Listener close")
})
// Only first call to l.Close should remove.
t.Run("SecondClose", func(t *testing.T) {
l := listen(t)
checkExists(t, "after Listen")
l.Close()
checkNotExists(t, "after Listener close")
if err := ioutil.WriteFile(name, []byte("hello world"), 0666); err != nil {
t.Fatalf("cannot recreate socket file: %v", err)
}
checkExists(t, "after writing temp file")
l.Close()
checkExists(t, "after second Listener close")
os.Remove(name)
})
// SetUnlinkOnClose should do what it says.
t.Run("Listen/SetUnlinkOnClose(true)", func(t *testing.T) {
l := listen(t)
checkExists(t, "after Listen")
l.SetUnlinkOnClose(true)
l.Close()
checkNotExists(t, "after Listener close")
})
t.Run("Listen/SetUnlinkOnClose(false)", func(t *testing.T) {
l := listen(t)
checkExists(t, "after Listen")
l.SetUnlinkOnClose(false)
l.Close()
checkExists(t, "after Listener close")
os.Remove(name)
})
t.Run("FileListener/SetUnlinkOnClose(true)", func(t *testing.T) {
l := listen(t)
f, _ := l.File()
l1, _ := FileListener(f)
checkExists(t, "after FileListener")
l1.(*UnixListener).SetUnlinkOnClose(true)
f.Close()
checkExists(t, "after File close")
l1.Close()
checkNotExists(t, "after FileListener close")
l.Close()
})
t.Run("FileListener/SetUnlinkOnClose(false)", func(t *testing.T) {
l := listen(t)
f, _ := l.File()
l1, _ := FileListener(f)
checkExists(t, "after FileListener")
l1.(*UnixListener).SetUnlinkOnClose(false)
f.Close()
checkExists(t, "after File close")
l1.Close()
checkExists(t, "after FileListener close")
l.Close()
})
}
|