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// Copyright 2009 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 net
import (
"flag"
"io"
"os"
"runtime"
"strconv"
"testing"
"time"
)
func skipServerTest(net, unixsotype, addr string, ipv6, ipv4map, linuxonly bool) bool {
switch runtime.GOOS {
case "linux":
case "plan9", "windows":
// "unix" sockets are not supported on Windows and Plan 9.
if net == unixsotype {
return true
}
default:
if net == unixsotype && linuxonly {
return true
}
}
switch addr {
case "", "0.0.0.0", "[::ffff:0.0.0.0]", "[::]":
if testing.Short() || !*testExternal {
return true
}
}
if ipv6 && !supportsIPv6 {
return true
}
if ipv4map && !supportsIPv4map {
return true
}
return false
}
func tempfile(filename string) string {
// use /tmp in case it is prohibited to create
// UNIX sockets in TMPDIR
return "/tmp/" + filename + "." + strconv.Itoa(os.Getpid())
}
var streamConnServerTests = []struct {
snet string // server side
saddr string
cnet string // client side
caddr string
ipv6 bool // test with underlying AF_INET6 socket
ipv4map bool // test with IPv6 IPv4-mapping functionality
empty bool // test with empty data
linux bool // test with abstract unix domain socket, a Linux-ism
}{
{snet: "tcp", saddr: "", cnet: "tcp", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "0.0.0.0", cnet: "tcp", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::ffff:0.0.0.0]", cnet: "tcp", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::]", cnet: "tcp", caddr: "[::1]", ipv6: true},
{snet: "tcp", saddr: "", cnet: "tcp", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "0.0.0.0", cnet: "tcp", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "[::ffff:0.0.0.0]", cnet: "tcp", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "[::]", cnet: "tcp", caddr: "127.0.0.1", ipv4map: true},
{snet: "tcp", saddr: "", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "0.0.0.0", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::ffff:0.0.0.0]", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::]", cnet: "tcp6", caddr: "[::1]", ipv6: true},
{snet: "tcp", saddr: "", cnet: "tcp6", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "0.0.0.0", cnet: "tcp6", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "[::ffff:0.0.0.0]", cnet: "tcp6", caddr: "[::1]", ipv4map: true},
{snet: "tcp", saddr: "[::]", cnet: "tcp4", caddr: "127.0.0.1", ipv4map: true},
{snet: "tcp", saddr: "127.0.0.1", cnet: "tcp", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::ffff:127.0.0.1]", cnet: "tcp", caddr: "127.0.0.1"},
{snet: "tcp", saddr: "[::1]", cnet: "tcp", caddr: "[::1]", ipv6: true},
{snet: "tcp4", saddr: "", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp4", saddr: "0.0.0.0", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp4", saddr: "[::ffff:0.0.0.0]", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp4", saddr: "127.0.0.1", cnet: "tcp4", caddr: "127.0.0.1"},
{snet: "tcp6", saddr: "", cnet: "tcp6", caddr: "[::1]", ipv6: true},
{snet: "tcp6", saddr: "[::]", cnet: "tcp6", caddr: "[::1]", ipv6: true},
{snet: "tcp6", saddr: "[::1]", cnet: "tcp6", caddr: "[::1]", ipv6: true},
{snet: "unix", saddr: tempfile("gotest1.net"), cnet: "unix", caddr: tempfile("gotest1.net.local")},
{snet: "unix", saddr: "@gotest2/net", cnet: "unix", caddr: "@gotest2/net.local", linux: true},
}
func TestStreamConnServer(t *testing.T) {
for _, tt := range streamConnServerTests {
if skipServerTest(tt.snet, "unix", tt.saddr, tt.ipv6, tt.ipv4map, tt.linux) {
continue
}
listening := make(chan string)
done := make(chan int)
switch tt.snet {
case "tcp", "tcp4", "tcp6":
tt.saddr += ":0"
case "unix":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
go runStreamConnServer(t, tt.snet, tt.saddr, listening, done)
taddr := <-listening // wait for server to start
switch tt.cnet {
case "tcp", "tcp4", "tcp6":
_, port, err := SplitHostPort(taddr)
if err != nil {
t.Fatalf("SplitHostPort(%q) failed: %v", taddr, err)
}
taddr = tt.caddr + ":" + port
}
runStreamConnClient(t, tt.cnet, taddr, tt.empty)
<-done // make sure server stopped
switch tt.snet {
case "unix":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
}
}
var seqpacketConnServerTests = []struct {
net string
saddr string // server address
caddr string // client address
empty bool // test with empty data
}{
{net: "unixpacket", saddr: tempfile("/gotest3.net"), caddr: tempfile("gotest3.net.local")},
{net: "unixpacket", saddr: "@gotest4/net", caddr: "@gotest4/net.local"},
}
func TestSeqpacketConnServer(t *testing.T) {
if runtime.GOOS != "linux" {
t.Skipf("skipping test on %q", runtime.GOOS)
}
for _, tt := range seqpacketConnServerTests {
listening := make(chan string)
done := make(chan int)
switch tt.net {
case "unixpacket":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
go runStreamConnServer(t, tt.net, tt.saddr, listening, done)
taddr := <-listening // wait for server to start
runStreamConnClient(t, tt.net, taddr, tt.empty)
<-done // make sure server stopped
switch tt.net {
case "unixpacket":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
}
}
func runStreamConnServer(t *testing.T, net, laddr string, listening chan<- string, done chan<- int) {
defer close(done)
l, err := Listen(net, laddr)
if err != nil {
t.Errorf("Listen(%q, %q) failed: %v", net, laddr, err)
listening <- "<nil>"
return
}
defer l.Close()
listening <- l.Addr().String()
echo := func(rw io.ReadWriter, done chan<- int) {
buf := make([]byte, 1024)
for {
n, err := rw.Read(buf[0:])
if err != nil || n == 0 || string(buf[:n]) == "END" {
break
}
rw.Write(buf[0:n])
}
close(done)
}
run:
for {
c, err := l.Accept()
if err != nil {
t.Logf("Accept failed: %v", err)
continue run
}
echodone := make(chan int)
go echo(c, echodone)
<-echodone // make sure echo stopped
c.Close()
break run
}
}
func runStreamConnClient(t *testing.T, net, taddr string, isEmpty bool) {
c, err := Dial(net, taddr)
if err != nil {
t.Fatalf("Dial(%q, %q) failed: %v", net, taddr, err)
}
defer c.Close()
c.SetReadDeadline(time.Now().Add(1 * time.Second))
var wb []byte
if !isEmpty {
wb = []byte("StreamConnClient by Dial\n")
}
if n, err := c.Write(wb); err != nil || n != len(wb) {
t.Fatalf("Write failed: %v, %v; want %v, <nil>", n, err, len(wb))
}
rb := make([]byte, 1024)
if n, err := c.Read(rb[0:]); err != nil || n != len(wb) {
t.Fatalf("Read failed: %v, %v; want %v, <nil>", n, err, len(wb))
}
// Send explicit ending for unixpacket.
// Older Linux kernels do not stop reads on close.
switch net {
case "unixpacket":
c.Write([]byte("END"))
}
}
// Do not test empty datagrams by default.
// It causes unexplained timeouts on some systems,
// including Snow Leopard. I think that the kernel
// doesn't quite expect them.
var testDatagram = flag.Bool("datagram", false, "whether to test udp and unixgram")
var datagramPacketConnServerTests = []struct {
snet string // server side
saddr string
cnet string // client side
caddr string
ipv6 bool // test with underlying AF_INET6 socket
ipv4map bool // test with IPv6 IPv4-mapping functionality
dial bool // test with Dial or DialUnix
empty bool // test with empty data
linux bool // test with abstract unix domain socket, a Linux-ism
}{
{snet: "udp", saddr: "", cnet: "udp", caddr: "127.0.0.1"},
{snet: "udp", saddr: "0.0.0.0", cnet: "udp", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::ffff:0.0.0.0]", cnet: "udp", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::]", cnet: "udp", caddr: "[::1]", ipv6: true},
{snet: "udp", saddr: "", cnet: "udp", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "0.0.0.0", cnet: "udp", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "[::ffff:0.0.0.0]", cnet: "udp", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "[::]", cnet: "udp", caddr: "127.0.0.1", ipv4map: true},
{snet: "udp", saddr: "", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp", saddr: "0.0.0.0", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::ffff:0.0.0.0]", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::]", cnet: "udp6", caddr: "[::1]", ipv6: true},
{snet: "udp", saddr: "", cnet: "udp6", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "0.0.0.0", cnet: "udp6", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "[::ffff:0.0.0.0]", cnet: "udp6", caddr: "[::1]", ipv4map: true},
{snet: "udp", saddr: "[::]", cnet: "udp4", caddr: "127.0.0.1", ipv4map: true},
{snet: "udp", saddr: "127.0.0.1", cnet: "udp", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::ffff:127.0.0.1]", cnet: "udp", caddr: "127.0.0.1"},
{snet: "udp", saddr: "[::1]", cnet: "udp", caddr: "[::1]", ipv6: true},
{snet: "udp4", saddr: "", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp4", saddr: "0.0.0.0", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp4", saddr: "[::ffff:0.0.0.0]", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp4", saddr: "127.0.0.1", cnet: "udp4", caddr: "127.0.0.1"},
{snet: "udp6", saddr: "", cnet: "udp6", caddr: "[::1]", ipv6: true},
{snet: "udp6", saddr: "[::]", cnet: "udp6", caddr: "[::1]", ipv6: true},
{snet: "udp6", saddr: "[::1]", cnet: "udp6", caddr: "[::1]", ipv6: true},
{snet: "udp", saddr: "127.0.0.1", cnet: "udp", caddr: "127.0.0.1", dial: true},
{snet: "udp", saddr: "127.0.0.1", cnet: "udp", caddr: "127.0.0.1", empty: true},
{snet: "udp", saddr: "127.0.0.1", cnet: "udp", caddr: "127.0.0.1", dial: true, empty: true},
{snet: "udp", saddr: "[::1]", cnet: "udp", caddr: "[::1]", ipv6: true, dial: true},
{snet: "udp", saddr: "[::1]", cnet: "udp", caddr: "[::1]", ipv6: true, empty: true},
{snet: "udp", saddr: "[::1]", cnet: "udp", caddr: "[::1]", ipv6: true, dial: true, empty: true},
{snet: "unixgram", saddr: tempfile("gotest5.net"), cnet: "unixgram", caddr: tempfile("gotest5.net.local")},
{snet: "unixgram", saddr: tempfile("gotest5.net"), cnet: "unixgram", caddr: tempfile("gotest5.net.local"), dial: true},
{snet: "unixgram", saddr: tempfile("gotest5.net"), cnet: "unixgram", caddr: tempfile("gotest5.net.local"), empty: true},
{snet: "unixgram", saddr: tempfile("gotest5.net"), cnet: "unixgram", caddr: tempfile("gotest5.net.local"), dial: true, empty: true},
{snet: "unixgram", saddr: "@gotest6/net", cnet: "unixgram", caddr: "@gotest6/net.local", linux: true},
}
func TestDatagramPacketConnServer(t *testing.T) {
if !*testDatagram {
return
}
for _, tt := range datagramPacketConnServerTests {
if skipServerTest(tt.snet, "unixgram", tt.saddr, tt.ipv6, tt.ipv4map, tt.linux) {
continue
}
listening := make(chan string)
done := make(chan int)
switch tt.snet {
case "udp", "udp4", "udp6":
tt.saddr += ":0"
case "unixgram":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
go runDatagramPacketConnServer(t, tt.snet, tt.saddr, listening, done)
taddr := <-listening // wait for server to start
switch tt.cnet {
case "udp", "udp4", "udp6":
_, port, err := SplitHostPort(taddr)
if err != nil {
t.Fatalf("SplitHostPort(%q) failed: %v", taddr, err)
}
taddr = tt.caddr + ":" + port
tt.caddr += ":0"
}
if tt.dial {
runDatagramConnClient(t, tt.cnet, tt.caddr, taddr, tt.empty)
} else {
runDatagramPacketConnClient(t, tt.cnet, tt.caddr, taddr, tt.empty)
}
<-done // tell server to stop
<-done // make sure server stopped
switch tt.snet {
case "unixgram":
os.Remove(tt.saddr)
os.Remove(tt.caddr)
}
}
}
func runDatagramPacketConnServer(t *testing.T, net, laddr string, listening chan<- string, done chan<- int) {
c, err := ListenPacket(net, laddr)
if err != nil {
t.Errorf("ListenPacket(%q, %q) failed: %v", net, laddr, err)
listening <- "<nil>"
done <- 1
return
}
defer c.Close()
listening <- c.LocalAddr().String()
buf := make([]byte, 1024)
run:
for {
c.SetReadDeadline(time.Now().Add(10 * time.Millisecond))
n, ra, err := c.ReadFrom(buf[0:])
if nerr, ok := err.(Error); ok && nerr.Timeout() {
select {
case done <- 1:
break run
default:
continue run
}
}
if err != nil {
break run
}
if _, err = c.WriteTo(buf[0:n], ra); err != nil {
t.Errorf("WriteTo(%v) failed: %v", ra, err)
break run
}
}
done <- 1
}
func runDatagramConnClient(t *testing.T, net, laddr, taddr string, isEmpty bool) {
var c Conn
var err error
switch net {
case "udp", "udp4", "udp6":
c, err = Dial(net, taddr)
if err != nil {
t.Fatalf("Dial(%q, %q) failed: %v", net, taddr, err)
}
case "unixgram":
c, err = DialUnix(net, &UnixAddr{Name: laddr, Net: net}, &UnixAddr{Name: taddr, Net: net})
if err != nil {
t.Fatalf("DialUnix(%q, {%q, %q}) failed: %v", net, laddr, taddr, err)
}
}
defer c.Close()
c.SetReadDeadline(time.Now().Add(1 * time.Second))
var wb []byte
if !isEmpty {
wb = []byte("DatagramConnClient by Dial\n")
}
if n, err := c.Write(wb[0:]); err != nil || n != len(wb) {
t.Fatalf("Write failed: %v, %v; want %v, <nil>", n, err, len(wb))
}
rb := make([]byte, 1024)
if n, err := c.Read(rb[0:]); err != nil || n != len(wb) {
t.Fatalf("Read failed: %v, %v; want %v, <nil>", n, err, len(wb))
}
}
func runDatagramPacketConnClient(t *testing.T, net, laddr, taddr string, isEmpty bool) {
var ra Addr
var err error
switch net {
case "udp", "udp4", "udp6":
ra, err = ResolveUDPAddr(net, taddr)
if err != nil {
t.Fatalf("ResolveUDPAddr(%q, %q) failed: %v", net, taddr, err)
}
case "unixgram":
ra, err = ResolveUnixAddr(net, taddr)
if err != nil {
t.Fatalf("ResolveUxixAddr(%q, %q) failed: %v", net, taddr, err)
}
}
c, err := ListenPacket(net, laddr)
if err != nil {
t.Fatalf("ListenPacket(%q, %q) faild: %v", net, laddr, err)
}
defer c.Close()
c.SetReadDeadline(time.Now().Add(1 * time.Second))
var wb []byte
if !isEmpty {
wb = []byte("DatagramPacketConnClient by ListenPacket\n")
}
if n, err := c.WriteTo(wb[0:], ra); err != nil || n != len(wb) {
t.Fatalf("WriteTo(%v) failed: %v, %v; want %v, <nil>", ra, n, err, len(wb))
}
rb := make([]byte, 1024)
if n, _, err := c.ReadFrom(rb[0:]); err != nil || n != len(wb) {
t.Fatalf("ReadFrom failed: %v, %v; want %v, <nil>", n, err, len(wb))
}
}
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