/third_party/gofrontend/libgo/go/net/tcp_test.go
Go | 587 lines | 514 code | 48 blank | 25 comment | 187 complexity | 6db41a4e2e8c3adaaafb46240337966f MD5 | raw file
Possible License(s): BSD-3-Clause, MIT
- // 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 (
- "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) {
- testHookUninstaller.Do(uninstallTestHooks)
- 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.Log(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.Log(err)
- return false
- }
- }
- return true
- }
- ln, err := Listen("tcp", laddr)
- if err != nil {
- b.Fatal(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.Log(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) {
- testHookUninstaller.Do(uninstallTestHooks)
- // 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.Fatal(err)
- }
- defer ln.Close()
- done := make(chan bool)
- go func() {
- for p := 0; p < P; p++ {
- s, err := ln.Accept()
- if err != nil {
- b.Error(err)
- return
- }
- servers[p] = s
- }
- done <- true
- }()
- for p := 0; p < P; p++ {
- c, err := Dial("tcp", ln.Addr().String())
- if err != nil {
- b.Fatal(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.Error(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.Error(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.Error(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.Error(err)
- return
- }
- }
- c.Close()
- }(clients[p])
- }
- wg.Wait()
- }
- type resolveTCPAddrTest struct {
- network 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]:0", &TCPAddr{IP: ParseIP("::1"), Port: 0}, nil},
- {"tcp6", "[::1]:65535", &TCPAddr{IP: ParseIP("::1"), Port: 65535}, 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 TestResolveTCPAddr(t *testing.T) {
- origTestHookLookupIP := testHookLookupIP
- defer func() { testHookLookupIP = origTestHookLookupIP }()
- testHookLookupIP = lookupLocalhost
- for i, tt := range resolveTCPAddrTests {
- addr, err := ResolveTCPAddr(tt.network, tt.litAddrOrName)
- if err != tt.err {
- t.Errorf("#%d: %v", i, err)
- } else if !reflect.DeepEqual(addr, tt.addr) {
- t.Errorf("#%d: got %#v; want %#v", i, addr, tt.addr)
- }
- if err != nil {
- continue
- }
- rtaddr, err := ResolveTCPAddr(addr.Network(), addr.String())
- if err != nil {
- t.Errorf("#%d: %v", i, err)
- } else if !reflect.DeepEqual(rtaddr, addr) {
- t.Errorf("#%d: got %#v; want %#v", i, rtaddr, 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("avoid external network")
- }
- for _, tt := range tcpListenerNameTests {
- ln, err := ListenTCP(tt.net, tt.laddr)
- if err != nil {
- t.Fatal(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("avoid external network")
- }
- if !supportsIPv6 {
- t.Skip("IPv6 is not supported")
- }
- for i, tt := range ipv6LinkLocalUnicastTCPTests {
- ln, err := Listen(tt.network, tt.address)
- if err != nil {
- // It might return "LookupHost returned no
- // suitable address" error on some platforms.
- t.Log(err)
- continue
- }
- ls, err := (&streamListener{Listener: ln}).newLocalServer()
- if err != nil {
- t.Fatal(err)
- }
- defer ls.teardown()
- ch := make(chan error, 1)
- handler := func(ls *localServer, ln Listener) { transponder(ln, ch) }
- if err := ls.buildup(handler); err != nil {
- t.Fatal(err)
- }
- if la, ok := ln.Addr().(*TCPAddr); !ok || !tt.nameLookup && la.Zone == "" {
- t.Fatalf("got %v; expected a proper address with zone identifier", la)
- }
- c, err := Dial(tt.network, ls.Listener.Addr().String())
- if err != nil {
- t.Fatal(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.Fatal(err)
- }
- b := make([]byte, 32)
- if _, err := c.Read(b); err != nil {
- t.Fatal(err)
- }
- for err := range ch {
- t.Errorf("#%d: %v", i, err)
- }
- }
- }
- func TestTCPConcurrentAccept(t *testing.T) {
- defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(4))
- ln, err := Listen("tcp", "127.0.0.1:0")
- if err != nil {
- t.Fatal(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 TestTCPReadWriteAllocs(t *testing.T) {
- t.Skip("skipping test on gccgo until escape analysis is turned on")
- switch runtime.GOOS {
- case "nacl", "windows":
- // NaCl needs to allocate pseudo file descriptor
- // stuff. See syscall/fd_nacl.go.
- // Windows uses closures and channels for IO
- // completion port-based netpoll. See fd_windows.go.
- t.Skipf("not supported on %s", runtime.GOOS)
- }
- ln, err := Listen("tcp", "127.0.0.1:0")
- if err != nil {
- t.Fatal(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.Fatal(err)
- }
- defer client.Close()
- if err := <-errc; err != nil {
- t.Fatal(err)
- }
- defer server.Close()
- var buf [128]byte
- allocs := testing.AllocsPerRun(1000, func() {
- _, err := server.Write(buf[:])
- if err != nil {
- t.Fatal(err)
- }
- _, err = io.ReadFull(client, buf[:])
- if err != nil {
- t.Fatal(err)
- }
- })
- if allocs > 0 {
- t.Fatalf("got %v; want 0", allocs)
- }
- }
- 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.Log(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.Log(err)
- return false
- }
- }
- return true
- }
- ln, err := Listen("tcp", "127.0.0.1:0")
- if err != nil {
- t.Fatal(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.Log(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
- }
- }