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-rw-r--r--src/net/tcpsock_test.go825
1 files changed, 825 insertions, 0 deletions
diff --git a/src/net/tcpsock_test.go b/src/net/tcpsock_test.go
new file mode 100644
index 0000000..d6172bc
--- /dev/null
+++ b/src/net/tcpsock_test.go
@@ -0,0 +1,825 @@
+// 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.
+
+// +build !js
+
+package net
+
+import (
+ "fmt"
+ "internal/testenv"
+ "io"
+ "os"
+ "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")},
+
+ {"tcp", "127.0.0.1:http", &TCPAddr{IP: ParseIP("127.0.0.1"), Port: 80}, nil},
+ {"tcp", "[::ffff:127.0.0.1]:http", &TCPAddr{IP: ParseIP("::ffff:127.0.0.1"), Port: 80}, nil},
+ {"tcp", "[2001:db8::1]:http", &TCPAddr{IP: ParseIP("2001:db8::1"), Port: 80}, nil},
+ {"tcp4", "127.0.0.1:http", &TCPAddr{IP: ParseIP("127.0.0.1"), Port: 80}, nil},
+ {"tcp4", "[::ffff:127.0.0.1]:http", &TCPAddr{IP: ParseIP("127.0.0.1"), Port: 80}, nil},
+ {"tcp6", "[2001:db8::1]:http", &TCPAddr{IP: ParseIP("2001:db8::1"), Port: 80}, nil},
+
+ {"tcp4", "[2001:db8::1]:http", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "2001:db8::1"}},
+ {"tcp6", "127.0.0.1:http", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "127.0.0.1"}},
+ {"tcp6", "[::ffff:127.0.0.1]:http", nil, &AddrError{Err: errNoSuitableAddress.Error(), Addr: "::ffff:127.0.0.1"}},
+}
+
+func TestResolveTCPAddr(t *testing.T) {
+ origTestHookLookupIP := testHookLookupIP
+ defer func() { testHookLookupIP = origTestHookLookupIP }()
+ testHookLookupIP = lookupLocalhost
+
+ for _, tt := range resolveTCPAddrTests {
+ addr, err := ResolveTCPAddr(tt.network, tt.litAddrOrName)
+ if !reflect.DeepEqual(addr, tt.addr) || !reflect.DeepEqual(err, tt.err) {
+ t.Errorf("ResolveTCPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr, err, tt.addr, tt.err)
+ continue
+ }
+ if err == nil {
+ addr2, err := ResolveTCPAddr(addr.Network(), addr.String())
+ if !reflect.DeepEqual(addr2, tt.addr) || err != tt.err {
+ t.Errorf("(%q, %q): ResolveTCPAddr(%q, %q) = %#v, %v, want %#v, %v", tt.network, tt.litAddrOrName, addr.Network(), addr.String(), addr2, err, tt.addr, tt.err)
+ }
+ }
+ }
+}
+
+var tcpListenerNameTests = []struct {
+ net string
+ laddr *TCPAddr
+}{
+ {"tcp4", &TCPAddr{IP: IPv4(127, 0, 0, 1)}},
+ {"tcp4", &TCPAddr{}},
+ {"tcp4", nil},
+}
+
+func TestTCPListenerName(t *testing.T) {
+ testenv.MustHaveExternalNetwork(t)
+
+ 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) {
+ testenv.MustHaveExternalNetwork(t)
+
+ 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) { ls.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) {
+ switch runtime.GOOS {
+ case "plan9":
+ // The implementation of asynchronous cancelable
+ // I/O on Plan 9 allocates memory.
+ // See net/fd_io_plan9.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, 1)
+ 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)
+ }
+
+ var bufwrt [128]byte
+ ch := make(chan bool)
+ defer close(ch)
+ go func() {
+ for <-ch {
+ _, err := server.Write(bufwrt[:])
+ errc <- err
+ }
+ }()
+ allocs = testing.AllocsPerRun(1000, func() {
+ ch <- true
+ if _, err = io.ReadFull(client, buf[:]); err != nil {
+ t.Fatal(err)
+ }
+ if err := <-errc; 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)
+ }
+ done := make(chan bool)
+ // Acceptor.
+ go func() {
+ defer func() {
+ done <- true
+ }()
+ 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)
+ }
+ }()
+ 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
+ }
+ ln.Close()
+ <-done
+}
+
+func TestTCPSelfConnect(t *testing.T) {
+ if runtime.GOOS == "windows" {
+ // TODO(brainman): do not know why it hangs.
+ t.Skip("known-broken test on windows")
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ var d Dialer
+ c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ ln.Close()
+ t.Fatal(err)
+ }
+ network := c.LocalAddr().Network()
+ laddr := *c.LocalAddr().(*TCPAddr)
+ c.Close()
+ ln.Close()
+
+ // Try to connect to that address repeatedly.
+ n := 100000
+ if testing.Short() {
+ n = 1000
+ }
+ switch runtime.GOOS {
+ case "darwin", "ios", "dragonfly", "freebsd", "netbsd", "openbsd", "plan9", "illumos", "solaris", "windows":
+ // Non-Linux systems take a long time to figure
+ // out that there is nothing listening on localhost.
+ n = 100
+ }
+ for i := 0; i < n; i++ {
+ d.Timeout = time.Millisecond
+ c, err := d.Dial(network, laddr.String())
+ if err == nil {
+ addr := c.LocalAddr().(*TCPAddr)
+ if addr.Port == laddr.Port || addr.IP.Equal(laddr.IP) {
+ t.Errorf("Dial %v should fail", addr)
+ } else {
+ t.Logf("Dial %v succeeded - possibly racing with other listener", addr)
+ }
+ c.Close()
+ }
+ }
+}
+
+// Test that >32-bit reads work on 64-bit systems.
+// On 32-bit systems this tests that maxint reads work.
+func TestTCPBig(t *testing.T) {
+ if !*testTCPBig {
+ t.Skip("test disabled; use -tcpbig to enable")
+ }
+
+ for _, writev := range []bool{false, true} {
+ t.Run(fmt.Sprintf("writev=%v", writev), func(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ x := int(1 << 30)
+ x = x*5 + 1<<20 // just over 5 GB on 64-bit, just over 1GB on 32-bit
+ done := make(chan int)
+ go func() {
+ defer close(done)
+ c, err := ln.Accept()
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ buf := make([]byte, x)
+ var n int
+ if writev {
+ var n64 int64
+ n64, err = (&Buffers{buf}).WriteTo(c)
+ n = int(n64)
+ } else {
+ n, err = c.Write(buf)
+ }
+ if n != len(buf) || err != nil {
+ t.Errorf("Write(buf) = %d, %v, want %d, nil", n, err, x)
+ }
+ c.Close()
+ }()
+
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ buf := make([]byte, x)
+ n, err := io.ReadFull(c, buf)
+ if n != len(buf) || err != nil {
+ t.Errorf("Read(buf) = %d, %v, want %d, nil", n, err, x)
+ }
+ c.Close()
+ <-done
+ })
+ }
+}
+
+func TestCopyPipeIntoTCP(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ errc := make(chan error, 1)
+ defer func() {
+ if err := <-errc; err != nil {
+ t.Error(err)
+ }
+ }()
+ go func() {
+ c, err := ln.Accept()
+ if err != nil {
+ errc <- err
+ return
+ }
+ defer c.Close()
+
+ buf := make([]byte, 100)
+ n, err := io.ReadFull(c, buf)
+ if err != io.ErrUnexpectedEOF || n != 2 {
+ errc <- fmt.Errorf("got err=%q n=%v; want err=%q n=2", err, n, io.ErrUnexpectedEOF)
+ return
+ }
+
+ errc <- nil
+ }()
+
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ r, w, err := os.Pipe()
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer r.Close()
+
+ errc2 := make(chan error, 1)
+ defer func() {
+ if err := <-errc2; err != nil {
+ t.Error(err)
+ }
+ }()
+
+ defer w.Close()
+
+ go func() {
+ _, err := io.Copy(c, r)
+ errc2 <- err
+ }()
+
+ // Split write into 2 packets. That makes Windows TransmitFile
+ // drop second packet.
+ packet := make([]byte, 1)
+ _, err = w.Write(packet)
+ if err != nil {
+ t.Fatal(err)
+ }
+ time.Sleep(100 * time.Millisecond)
+ _, err = w.Write(packet)
+ if err != nil {
+ t.Fatal(err)
+ }
+}
+
+func BenchmarkSetReadDeadline(b *testing.B) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ b.Fatal(err)
+ }
+ defer ln.Close()
+ var serv Conn
+ done := make(chan error)
+ go func() {
+ var err error
+ serv, err = ln.Accept()
+ done <- err
+ }()
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ b.Fatal(err)
+ }
+ defer c.Close()
+ if err := <-done; err != nil {
+ b.Fatal(err)
+ }
+ defer serv.Close()
+ c.SetWriteDeadline(time.Now().Add(2 * time.Hour))
+ deadline := time.Now().Add(time.Hour)
+ b.ResetTimer()
+ for i := 0; i < b.N; i++ {
+ c.SetReadDeadline(deadline)
+ deadline = deadline.Add(1)
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 09:14:42 +0000