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// 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"
"reflect"
"runtime"
"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) * 16
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()
// Acceptor.
go func() {
for {
c, err := ln.Accept()
if err != nil {
break
}
// Server connection.
go func(c Conn) {
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 !recvMsg(c, buf[:]) || !sendMsg(c, buf[:]) {
break
}
}
}(c)
}
}()
sem := make(chan bool, numConcurrent)
for i := 0; i < conns; i++ {
sem <- true
// Client connection.
go func() {
defer func() {
<-sem
}()
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 < cap(sem); i++ {
sem <- true
}
}
type resolveTCPAddrTest struct {
net string
litAddr 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
{"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},
}...)
}
}
func TestResolveTCPAddr(t *testing.T) {
for _, tt := range resolveTCPAddrTests {
addr, err := ResolveTCPAddr(tt.net, tt.litAddr)
if err != tt.err {
t.Fatalf("ResolveTCPAddr(%v, %v) failed: %v", tt.net, tt.litAddr, err)
}
if !reflect.DeepEqual(addr, tt.addr) {
t.Fatalf("got %#v; expected %#v", addr, tt.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", "opensbd", "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
}
}
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