mirror of git://gcc.gnu.org/git/gcc.git
612 lines
14 KiB
Go
612 lines
14 KiB
Go
// Copyright 2012 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 (
|
|
"fmt"
|
|
"io"
|
|
"reflect"
|
|
"runtime"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
func BenchmarkTCP4OneShot(b *testing.B) {
|
|
benchmarkTCP(b, false, false, "127.0.0.1:0")
|
|
}
|
|
|
|
func BenchmarkTCP4OneShotTimeout(b *testing.B) {
|
|
benchmarkTCP(b, false, true, "127.0.0.1:0")
|
|
}
|
|
|
|
func BenchmarkTCP4Persistent(b *testing.B) {
|
|
benchmarkTCP(b, true, false, "127.0.0.1:0")
|
|
}
|
|
|
|
func BenchmarkTCP4PersistentTimeout(b *testing.B) {
|
|
benchmarkTCP(b, true, true, "127.0.0.1:0")
|
|
}
|
|
|
|
func BenchmarkTCP6OneShot(b *testing.B) {
|
|
if !supportsIPv6 {
|
|
b.Skip("ipv6 is not supported")
|
|
}
|
|
benchmarkTCP(b, false, false, "[::1]:0")
|
|
}
|
|
|
|
func BenchmarkTCP6OneShotTimeout(b *testing.B) {
|
|
if !supportsIPv6 {
|
|
b.Skip("ipv6 is not supported")
|
|
}
|
|
benchmarkTCP(b, false, true, "[::1]:0")
|
|
}
|
|
|
|
func BenchmarkTCP6Persistent(b *testing.B) {
|
|
if !supportsIPv6 {
|
|
b.Skip("ipv6 is not supported")
|
|
}
|
|
benchmarkTCP(b, true, false, "[::1]:0")
|
|
}
|
|
|
|
func BenchmarkTCP6PersistentTimeout(b *testing.B) {
|
|
if !supportsIPv6 {
|
|
b.Skip("ipv6 is not supported")
|
|
}
|
|
benchmarkTCP(b, true, true, "[::1]:0")
|
|
}
|
|
|
|
func benchmarkTCP(b *testing.B, persistent, timeout bool, laddr string) {
|
|
const msgLen = 512
|
|
conns := b.N
|
|
numConcurrent := runtime.GOMAXPROCS(-1) * 2
|
|
msgs := 1
|
|
if persistent {
|
|
conns = numConcurrent
|
|
msgs = b.N / conns
|
|
if msgs == 0 {
|
|
msgs = 1
|
|
}
|
|
if conns > b.N {
|
|
conns = b.N
|
|
}
|
|
}
|
|
sendMsg := func(c Conn, buf []byte) bool {
|
|
n, err := c.Write(buf)
|
|
if n != len(buf) || err != nil {
|
|
b.Logf("Write failed: %v", err)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
recvMsg := func(c Conn, buf []byte) bool {
|
|
for read := 0; read != len(buf); {
|
|
n, err := c.Read(buf)
|
|
read += n
|
|
if err != nil {
|
|
b.Logf("Read failed: %v", err)
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
ln, err := Listen("tcp", laddr)
|
|
if err != nil {
|
|
b.Fatalf("Listen failed: %v", err)
|
|
}
|
|
defer ln.Close()
|
|
serverSem := make(chan bool, numConcurrent)
|
|
// Acceptor.
|
|
go func() {
|
|
for {
|
|
c, err := ln.Accept()
|
|
if err != nil {
|
|
break
|
|
}
|
|
serverSem <- true
|
|
// Server connection.
|
|
go func(c Conn) {
|
|
defer func() {
|
|
c.Close()
|
|
<-serverSem
|
|
}()
|
|
if timeout {
|
|
c.SetDeadline(time.Now().Add(time.Hour)) // Not intended to fire.
|
|
}
|
|
var buf [msgLen]byte
|
|
for m := 0; m < msgs; m++ {
|
|
if !recvMsg(c, buf[:]) || !sendMsg(c, buf[:]) {
|
|
break
|
|
}
|
|
}
|
|
}(c)
|
|
}
|
|
}()
|
|
clientSem := make(chan bool, numConcurrent)
|
|
for i := 0; i < conns; i++ {
|
|
clientSem <- true
|
|
// Client connection.
|
|
go func() {
|
|
defer func() {
|
|
<-clientSem
|
|
}()
|
|
c, err := Dial("tcp", ln.Addr().String())
|
|
if err != nil {
|
|
b.Logf("Dial failed: %v", err)
|
|
return
|
|
}
|
|
defer c.Close()
|
|
if timeout {
|
|
c.SetDeadline(time.Now().Add(time.Hour)) // Not intended to fire.
|
|
}
|
|
var buf [msgLen]byte
|
|
for m := 0; m < msgs; m++ {
|
|
if !sendMsg(c, buf[:]) || !recvMsg(c, buf[:]) {
|
|
break
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
for i := 0; i < numConcurrent; i++ {
|
|
clientSem <- true
|
|
serverSem <- true
|
|
}
|
|
}
|
|
|
|
func BenchmarkTCP4ConcurrentReadWrite(b *testing.B) {
|
|
benchmarkTCPConcurrentReadWrite(b, "127.0.0.1:0")
|
|
}
|
|
|
|
func BenchmarkTCP6ConcurrentReadWrite(b *testing.B) {
|
|
if !supportsIPv6 {
|
|
b.Skip("ipv6 is not supported")
|
|
}
|
|
benchmarkTCPConcurrentReadWrite(b, "[::1]:0")
|
|
}
|
|
|
|
func benchmarkTCPConcurrentReadWrite(b *testing.B, laddr string) {
|
|
// The benchmark creates GOMAXPROCS client/server pairs.
|
|
// Each pair creates 4 goroutines: client reader/writer and server reader/writer.
|
|
// The benchmark stresses concurrent reading and writing to the same connection.
|
|
// Such pattern is used in net/http and net/rpc.
|
|
|
|
b.StopTimer()
|
|
|
|
P := runtime.GOMAXPROCS(0)
|
|
N := b.N / P
|
|
W := 1000
|
|
|
|
// Setup P client/server connections.
|
|
clients := make([]Conn, P)
|
|
servers := make([]Conn, P)
|
|
ln, err := Listen("tcp", laddr)
|
|
if err != nil {
|
|
b.Fatalf("Listen failed: %v", err)
|
|
}
|
|
defer ln.Close()
|
|
done := make(chan bool)
|
|
go func() {
|
|
for p := 0; p < P; p++ {
|
|
s, err := ln.Accept()
|
|
if err != nil {
|
|
b.Errorf("Accept failed: %v", err)
|
|
return
|
|
}
|
|
servers[p] = s
|
|
}
|
|
done <- true
|
|
}()
|
|
for p := 0; p < P; p++ {
|
|
c, err := Dial("tcp", ln.Addr().String())
|
|
if err != nil {
|
|
b.Fatalf("Dial failed: %v", err)
|
|
}
|
|
clients[p] = c
|
|
}
|
|
<-done
|
|
|
|
b.StartTimer()
|
|
|
|
var wg sync.WaitGroup
|
|
wg.Add(4 * P)
|
|
for p := 0; p < P; p++ {
|
|
// Client writer.
|
|
go func(c Conn) {
|
|
defer wg.Done()
|
|
var buf [1]byte
|
|
for i := 0; i < N; i++ {
|
|
v := byte(i)
|
|
for w := 0; w < W; w++ {
|
|
v *= v
|
|
}
|
|
buf[0] = v
|
|
_, err := c.Write(buf[:])
|
|
if err != nil {
|
|
b.Errorf("Write failed: %v", err)
|
|
return
|
|
}
|
|
}
|
|
}(clients[p])
|
|
|
|
// Pipe between server reader and server writer.
|
|
pipe := make(chan byte, 128)
|
|
|
|
// Server reader.
|
|
go func(s Conn) {
|
|
defer wg.Done()
|
|
var buf [1]byte
|
|
for i := 0; i < N; i++ {
|
|
_, err := s.Read(buf[:])
|
|
if err != nil {
|
|
b.Errorf("Read failed: %v", err)
|
|
return
|
|
}
|
|
pipe <- buf[0]
|
|
}
|
|
}(servers[p])
|
|
|
|
// Server writer.
|
|
go func(s Conn) {
|
|
defer wg.Done()
|
|
var buf [1]byte
|
|
for i := 0; i < N; i++ {
|
|
v := <-pipe
|
|
for w := 0; w < W; w++ {
|
|
v *= v
|
|
}
|
|
buf[0] = v
|
|
_, err := s.Write(buf[:])
|
|
if err != nil {
|
|
b.Errorf("Write failed: %v", err)
|
|
return
|
|
}
|
|
}
|
|
s.Close()
|
|
}(servers[p])
|
|
|
|
// Client reader.
|
|
go func(c Conn) {
|
|
defer wg.Done()
|
|
var buf [1]byte
|
|
for i := 0; i < N; i++ {
|
|
_, err := c.Read(buf[:])
|
|
if err != nil {
|
|
b.Errorf("Read failed: %v", err)
|
|
return
|
|
}
|
|
}
|
|
c.Close()
|
|
}(clients[p])
|
|
}
|
|
wg.Wait()
|
|
}
|
|
|
|
type resolveTCPAddrTest struct {
|
|
net string
|
|
litAddrOrName string
|
|
addr *TCPAddr
|
|
err error
|
|
}
|
|
|
|
var resolveTCPAddrTests = []resolveTCPAddrTest{
|
|
{"tcp", "127.0.0.1:0", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil},
|
|
{"tcp4", "127.0.0.1:65535", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 65535}, nil},
|
|
|
|
{"tcp", "[::1]:1", &TCPAddr{IP: ParseIP("::1"), Port: 1}, nil},
|
|
{"tcp6", "[::1]:65534", &TCPAddr{IP: ParseIP("::1"), Port: 65534}, nil},
|
|
|
|
{"tcp", "[::1%en0]:1", &TCPAddr{IP: ParseIP("::1"), Port: 1, Zone: "en0"}, nil},
|
|
{"tcp6", "[::1%911]:2", &TCPAddr{IP: ParseIP("::1"), Port: 2, Zone: "911"}, nil},
|
|
|
|
{"", "127.0.0.1:0", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 0}, nil}, // Go 1.0 behavior
|
|
{"", "[::1]:0", &TCPAddr{IP: ParseIP("::1"), Port: 0}, nil}, // Go 1.0 behavior
|
|
|
|
{"tcp", ":12345", &TCPAddr{Port: 12345}, nil},
|
|
|
|
{"http", "127.0.0.1:0", nil, UnknownNetworkError("http")},
|
|
}
|
|
|
|
func init() {
|
|
if ifi := loopbackInterface(); ifi != nil {
|
|
index := fmt.Sprintf("%v", ifi.Index)
|
|
resolveTCPAddrTests = append(resolveTCPAddrTests, []resolveTCPAddrTest{
|
|
{"tcp6", "[fe80::1%" + ifi.Name + "]:3", &TCPAddr{IP: ParseIP("fe80::1"), Port: 3, Zone: zoneToString(ifi.Index)}, nil},
|
|
{"tcp6", "[fe80::1%" + index + "]:4", &TCPAddr{IP: ParseIP("fe80::1"), Port: 4, Zone: index}, nil},
|
|
}...)
|
|
}
|
|
if ips, err := LookupIP("localhost"); err == nil && len(ips) > 1 && supportsIPv4 && supportsIPv6 {
|
|
resolveTCPAddrTests = append(resolveTCPAddrTests, []resolveTCPAddrTest{
|
|
{"tcp", "localhost:5", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 5}, nil},
|
|
{"tcp4", "localhost:6", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 6}, nil},
|
|
{"tcp6", "localhost:7", &TCPAddr{IP: IPv6loopback, Port: 7}, nil},
|
|
}...)
|
|
}
|
|
}
|
|
|
|
func TestResolveTCPAddr(t *testing.T) {
|
|
for _, tt := range resolveTCPAddrTests {
|
|
addr, err := ResolveTCPAddr(tt.net, tt.litAddrOrName)
|
|
if err != tt.err {
|
|
t.Fatalf("ResolveTCPAddr(%q, %q) failed: %v", tt.net, tt.litAddrOrName, err)
|
|
}
|
|
if !reflect.DeepEqual(addr, tt.addr) {
|
|
t.Fatalf("ResolveTCPAddr(%q, %q) = %#v, want %#v", tt.net, tt.litAddrOrName, addr, tt.addr)
|
|
}
|
|
if err == nil {
|
|
str := addr.String()
|
|
addr1, err := ResolveTCPAddr(tt.net, str)
|
|
if err != nil {
|
|
t.Fatalf("ResolveTCPAddr(%q, %q) [from %q]: %v", tt.net, str, tt.litAddrOrName, err)
|
|
}
|
|
if !reflect.DeepEqual(addr1, addr) {
|
|
t.Fatalf("ResolveTCPAddr(%q, %q) [from %q] = %#v, want %#v", tt.net, str, tt.litAddrOrName, addr1, addr)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var tcpListenerNameTests = []struct {
|
|
net string
|
|
laddr *TCPAddr
|
|
}{
|
|
{"tcp4", &TCPAddr{IP: IPv4(127, 0, 0, 1)}},
|
|
{"tcp4", &TCPAddr{}},
|
|
{"tcp4", nil},
|
|
}
|
|
|
|
func TestTCPListenerName(t *testing.T) {
|
|
if testing.Short() || !*testExternal {
|
|
t.Skip("skipping test to avoid external network")
|
|
}
|
|
|
|
for _, tt := range tcpListenerNameTests {
|
|
ln, err := ListenTCP(tt.net, tt.laddr)
|
|
if err != nil {
|
|
t.Fatalf("ListenTCP failed: %v", err)
|
|
}
|
|
defer ln.Close()
|
|
la := ln.Addr()
|
|
if a, ok := la.(*TCPAddr); !ok || a.Port == 0 {
|
|
t.Fatalf("got %v; expected a proper address with non-zero port number", la)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestIPv6LinkLocalUnicastTCP(t *testing.T) {
|
|
if testing.Short() || !*testExternal {
|
|
t.Skip("skipping test to avoid external network")
|
|
}
|
|
if !supportsIPv6 {
|
|
t.Skip("ipv6 is not supported")
|
|
}
|
|
ifi := loopbackInterface()
|
|
if ifi == nil {
|
|
t.Skip("loopback interface not found")
|
|
}
|
|
laddr := ipv6LinkLocalUnicastAddr(ifi)
|
|
if laddr == "" {
|
|
t.Skip("ipv6 unicast address on loopback not found")
|
|
}
|
|
|
|
type test struct {
|
|
net, addr string
|
|
nameLookup bool
|
|
}
|
|
var tests = []test{
|
|
{"tcp", "[" + laddr + "%" + ifi.Name + "]:0", false},
|
|
{"tcp6", "[" + laddr + "%" + ifi.Name + "]:0", false},
|
|
}
|
|
switch runtime.GOOS {
|
|
case "darwin", "freebsd", "openbsd", "netbsd":
|
|
tests = append(tests, []test{
|
|
{"tcp", "[localhost%" + ifi.Name + "]:0", true},
|
|
{"tcp6", "[localhost%" + ifi.Name + "]:0", true},
|
|
}...)
|
|
case "linux":
|
|
tests = append(tests, []test{
|
|
{"tcp", "[ip6-localhost%" + ifi.Name + "]:0", true},
|
|
{"tcp6", "[ip6-localhost%" + ifi.Name + "]:0", true},
|
|
}...)
|
|
}
|
|
for _, tt := range tests {
|
|
ln, err := Listen(tt.net, tt.addr)
|
|
if err != nil {
|
|
// It might return "LookupHost returned no
|
|
// suitable address" error on some platforms.
|
|
t.Logf("Listen failed: %v", err)
|
|
continue
|
|
}
|
|
defer ln.Close()
|
|
if la, ok := ln.Addr().(*TCPAddr); !ok || !tt.nameLookup && la.Zone == "" {
|
|
t.Fatalf("got %v; expected a proper address with zone identifier", la)
|
|
}
|
|
|
|
done := make(chan int)
|
|
go transponder(t, ln, done)
|
|
|
|
c, err := Dial(tt.net, ln.Addr().String())
|
|
if err != nil {
|
|
t.Fatalf("Dial failed: %v", err)
|
|
}
|
|
defer c.Close()
|
|
if la, ok := c.LocalAddr().(*TCPAddr); !ok || !tt.nameLookup && la.Zone == "" {
|
|
t.Fatalf("got %v; expected a proper address with zone identifier", la)
|
|
}
|
|
if ra, ok := c.RemoteAddr().(*TCPAddr); !ok || !tt.nameLookup && ra.Zone == "" {
|
|
t.Fatalf("got %v; expected a proper address with zone identifier", ra)
|
|
}
|
|
|
|
if _, err := c.Write([]byte("TCP OVER IPV6 LINKLOCAL TEST")); err != nil {
|
|
t.Fatalf("Conn.Write failed: %v", err)
|
|
}
|
|
b := make([]byte, 32)
|
|
if _, err := c.Read(b); err != nil {
|
|
t.Fatalf("Conn.Read failed: %v", err)
|
|
}
|
|
|
|
<-done
|
|
}
|
|
}
|
|
|
|
func TestTCPConcurrentAccept(t *testing.T) {
|
|
defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(4))
|
|
ln, err := Listen("tcp", "127.0.0.1:0")
|
|
if err != nil {
|
|
t.Fatalf("Listen failed: %v", err)
|
|
}
|
|
const N = 10
|
|
var wg sync.WaitGroup
|
|
wg.Add(N)
|
|
for i := 0; i < N; i++ {
|
|
go func() {
|
|
for {
|
|
c, err := ln.Accept()
|
|
if err != nil {
|
|
break
|
|
}
|
|
c.Close()
|
|
}
|
|
wg.Done()
|
|
}()
|
|
}
|
|
attempts := 10 * N
|
|
fails := 0
|
|
d := &Dialer{Timeout: 200 * time.Millisecond}
|
|
for i := 0; i < attempts; i++ {
|
|
c, err := d.Dial("tcp", ln.Addr().String())
|
|
if err != nil {
|
|
fails++
|
|
} else {
|
|
c.Close()
|
|
}
|
|
}
|
|
ln.Close()
|
|
wg.Wait()
|
|
if fails > attempts/9 { // see issues 7400 and 7541
|
|
t.Fatalf("too many Dial failed: %v", fails)
|
|
}
|
|
if fails > 0 {
|
|
t.Logf("# of failed Dials: %v", fails)
|
|
}
|
|
}
|
|
|
|
func TestTCPReadWriteMallocs(t *testing.T) {
|
|
if testing.Short() {
|
|
t.Skip("skipping malloc count in short mode")
|
|
}
|
|
ln, err := Listen("tcp", "127.0.0.1:0")
|
|
if err != nil {
|
|
t.Fatalf("Listen failed: %v", err)
|
|
}
|
|
defer ln.Close()
|
|
var server Conn
|
|
errc := make(chan error)
|
|
go func() {
|
|
var err error
|
|
server, err = ln.Accept()
|
|
errc <- err
|
|
}()
|
|
client, err := Dial("tcp", ln.Addr().String())
|
|
if err != nil {
|
|
t.Fatalf("Dial failed: %v", err)
|
|
}
|
|
if err := <-errc; err != nil {
|
|
t.Fatalf("Accept failed: %v", err)
|
|
}
|
|
defer server.Close()
|
|
var buf [128]byte
|
|
mallocs := testing.AllocsPerRun(1000, func() {
|
|
_, err := server.Write(buf[:])
|
|
if err != nil {
|
|
t.Fatalf("Write failed: %v", err)
|
|
}
|
|
_, err = io.ReadFull(client, buf[:])
|
|
if err != nil {
|
|
t.Fatalf("Read failed: %v", err)
|
|
}
|
|
})
|
|
if mallocs > 0 {
|
|
t.Fatalf("Got %v allocs, want 0", mallocs)
|
|
}
|
|
}
|
|
|
|
func TestTCPStress(t *testing.T) {
|
|
const conns = 2
|
|
const msgLen = 512
|
|
msgs := int(1e4)
|
|
if testing.Short() {
|
|
msgs = 1e2
|
|
}
|
|
|
|
sendMsg := func(c Conn, buf []byte) bool {
|
|
n, err := c.Write(buf)
|
|
if n != len(buf) || err != nil {
|
|
t.Logf("Write failed: %v", err)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
recvMsg := func(c Conn, buf []byte) bool {
|
|
for read := 0; read != len(buf); {
|
|
n, err := c.Read(buf)
|
|
read += n
|
|
if err != nil {
|
|
t.Logf("Read failed: %v", err)
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
ln, err := Listen("tcp", "127.0.0.1:0")
|
|
if err != nil {
|
|
t.Fatalf("Listen failed: %v", err)
|
|
}
|
|
defer ln.Close()
|
|
// Acceptor.
|
|
go func() {
|
|
for {
|
|
c, err := ln.Accept()
|
|
if err != nil {
|
|
break
|
|
}
|
|
// Server connection.
|
|
go func(c Conn) {
|
|
defer c.Close()
|
|
var buf [msgLen]byte
|
|
for m := 0; m < msgs; m++ {
|
|
if !recvMsg(c, buf[:]) || !sendMsg(c, buf[:]) {
|
|
break
|
|
}
|
|
}
|
|
}(c)
|
|
}
|
|
}()
|
|
done := make(chan bool)
|
|
for i := 0; i < conns; i++ {
|
|
// Client connection.
|
|
go func() {
|
|
defer func() {
|
|
done <- true
|
|
}()
|
|
c, err := Dial("tcp", ln.Addr().String())
|
|
if err != nil {
|
|
t.Logf("Dial failed: %v", err)
|
|
return
|
|
}
|
|
defer c.Close()
|
|
var buf [msgLen]byte
|
|
for m := 0; m < msgs; m++ {
|
|
if !sendMsg(c, buf[:]) || !recvMsg(c, buf[:]) {
|
|
break
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
for i := 0; i < conns; i++ {
|
|
<-done
|
|
}
|
|
}
|