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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 !plan9,!windows
package net
import (
"bytes"
"os"
"reflect"
"runtime"
"syscall"
"testing"
"time"
)
func TestReadUnixgramWithUnnamedSocket(t *testing.T) {
addr := testUnixAddr()
la, err := ResolveUnixAddr("unixgram", addr)
if err != nil {
t.Fatalf("ResolveUnixAddr failed: %v", err)
}
c, err := ListenUnixgram("unixgram", la)
if err != nil {
t.Fatalf("ListenUnixgram failed: %v", 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.Errorf("syscall.Socket failed: %v", err)
return
}
defer syscall.Close(s)
rsa := &syscall.SockaddrUnix{Name: addr}
if err := syscall.Sendto(s, data[:], 0, rsa); err != nil {
t.Errorf("syscall.Sendto failed: %v", 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.Errorf("UnixConn.ReadFrom failed: %v", err)
return
}
if from != nil {
t.Errorf("neighbor address is %v", from)
}
if !bytes.Equal(b[:n], data[:]) {
t.Errorf("got %v, want %v", b[:n], data[:])
return
}
}
func TestReadUnixgramWithZeroBytesBuffer(t *testing.T) {
// issue 4352: Recvfrom failed with "address family not
// supported by protocol family" if zero-length buffer provided
addr := testUnixAddr()
la, err := ResolveUnixAddr("unixgram", addr)
if err != nil {
t.Fatalf("ResolveUnixAddr failed: %v", err)
}
c, err := ListenUnixgram("unixgram", la)
if err != nil {
t.Fatalf("ListenUnixgram failed: %v", err)
}
defer func() {
c.Close()
os.Remove(addr)
}()
off := make(chan bool)
go func() {
defer func() { off <- true }()
c, err := DialUnix("unixgram", nil, la)
if err != nil {
t.Errorf("DialUnix failed: %v", err)
return
}
defer c.Close()
if _, err := c.Write([]byte{1, 2, 3, 4, 5}); err != nil {
t.Errorf("UnixConn.Write failed: %v", err)
return
}
}()
<-off
c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
var peer Addr
if _, peer, err = c.ReadFrom(nil); err != nil {
t.Errorf("UnixConn.ReadFrom failed: %v", err)
return
}
if peer != nil {
t.Errorf("peer adddress is %v", peer)
}
}
func TestUnixAutobind(t *testing.T) {
if runtime.GOOS != "linux" {
t.Skip("skipping: autobind is linux only")
}
laddr := &UnixAddr{Name: "", Net: "unixgram"}
c1, err := ListenUnixgram("unixgram", laddr)
if err != nil {
t.Fatalf("ListenUnixgram failed: %v", err)
}
defer c1.Close()
// retrieve the autobind address
autoAddr := c1.LocalAddr().(*UnixAddr)
if len(autoAddr.Name) <= 1 {
t.Fatalf("Invalid autobind address: %v", autoAddr)
}
if autoAddr.Name[0] != '@' {
t.Fatalf("Invalid autobind address: %v", autoAddr)
}
c2, err := DialUnix("unixgram", nil, autoAddr)
if err != nil {
t.Fatalf("DialUnix failed: %v", err)
}
defer c2.Close()
if !reflect.DeepEqual(c1.LocalAddr(), c2.RemoteAddr()) {
t.Fatalf("Expected autobind address %v, got %v", c1.LocalAddr(), c2.RemoteAddr())
}
}
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