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-rw-r--r--src/net/timeout_test.go1092
1 files changed, 1092 insertions, 0 deletions
diff --git a/src/net/timeout_test.go b/src/net/timeout_test.go
new file mode 100644
index 0000000..205aaa4
--- /dev/null
+++ b/src/net/timeout_test.go
@@ -0,0 +1,1092 @@
+// 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.
+
+// +build !js
+
+package net
+
+import (
+ "errors"
+ "fmt"
+ "internal/testenv"
+ "io"
+ "net/internal/socktest"
+ "os"
+ "runtime"
+ "sync"
+ "testing"
+ "time"
+)
+
+var dialTimeoutTests = []struct {
+ timeout time.Duration
+ delta time.Duration // for deadline
+
+ guard time.Duration
+ max time.Duration
+}{
+ // Tests that dial timeouts, deadlines in the past work.
+ {-5 * time.Second, 0, -5 * time.Second, 100 * time.Millisecond},
+ {0, -5 * time.Second, -5 * time.Second, 100 * time.Millisecond},
+ {-5 * time.Second, 5 * time.Second, -5 * time.Second, 100 * time.Millisecond}, // timeout over deadline
+ {-1 << 63, 0, time.Second, 100 * time.Millisecond},
+ {0, -1 << 63, time.Second, 100 * time.Millisecond},
+
+ {50 * time.Millisecond, 0, 100 * time.Millisecond, time.Second},
+ {0, 50 * time.Millisecond, 100 * time.Millisecond, time.Second},
+ {50 * time.Millisecond, 5 * time.Second, 100 * time.Millisecond, time.Second}, // timeout over deadline
+}
+
+func TestDialTimeout(t *testing.T) {
+ // Cannot use t.Parallel - modifies global hooks.
+ origTestHookDialChannel := testHookDialChannel
+ defer func() { testHookDialChannel = origTestHookDialChannel }()
+ defer sw.Set(socktest.FilterConnect, nil)
+
+ for i, tt := range dialTimeoutTests {
+ switch runtime.GOOS {
+ case "plan9", "windows":
+ testHookDialChannel = func() { time.Sleep(tt.guard) }
+ if runtime.GOOS == "plan9" {
+ break
+ }
+ fallthrough
+ default:
+ sw.Set(socktest.FilterConnect, func(so *socktest.Status) (socktest.AfterFilter, error) {
+ time.Sleep(tt.guard)
+ return nil, errTimedout
+ })
+ }
+
+ ch := make(chan error)
+ d := Dialer{Timeout: tt.timeout}
+ if tt.delta != 0 {
+ d.Deadline = time.Now().Add(tt.delta)
+ }
+ max := time.NewTimer(tt.max)
+ defer max.Stop()
+ go func() {
+ // This dial never starts to send any TCP SYN
+ // segment because of above socket filter and
+ // test hook.
+ c, err := d.Dial("tcp", "127.0.0.1:0")
+ if err == nil {
+ err = fmt.Errorf("unexpectedly established: tcp:%s->%s", c.LocalAddr(), c.RemoteAddr())
+ c.Close()
+ }
+ ch <- err
+ }()
+
+ select {
+ case <-max.C:
+ t.Fatalf("#%d: Dial didn't return in an expected time", i)
+ case err := <-ch:
+ if perr := parseDialError(err); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
+ t.Fatalf("#%d: %v", i, err)
+ }
+ }
+ }
+}
+
+var dialTimeoutMaxDurationTests = []struct {
+ timeout time.Duration
+ delta time.Duration // for deadline
+}{
+ // Large timeouts that will overflow an int64 unix nanos.
+ {1<<63 - 1, 0},
+ {0, 1<<63 - 1},
+}
+
+func TestDialTimeoutMaxDuration(t *testing.T) {
+ if runtime.GOOS == "openbsd" {
+ testenv.SkipFlaky(t, 15157)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ for i, tt := range dialTimeoutMaxDurationTests {
+ ch := make(chan error)
+ max := time.NewTimer(250 * time.Millisecond)
+ defer max.Stop()
+ go func() {
+ d := Dialer{Timeout: tt.timeout}
+ if tt.delta != 0 {
+ d.Deadline = time.Now().Add(tt.delta)
+ }
+ c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
+ if err == nil {
+ c.Close()
+ }
+ ch <- err
+ }()
+
+ select {
+ case <-max.C:
+ t.Fatalf("#%d: Dial didn't return in an expected time", i)
+ case err := <-ch:
+ if perr := parseDialError(err); perr != nil {
+ t.Error(perr)
+ }
+ if err != nil {
+ t.Errorf("#%d: %v", i, err)
+ }
+ }
+ }
+}
+
+var acceptTimeoutTests = []struct {
+ timeout time.Duration
+ xerrs [2]error // expected errors in transition
+}{
+ // Tests that accept deadlines in the past work, even if
+ // there's incoming connections available.
+ {-5 * time.Second, [2]error{os.ErrDeadlineExceeded, os.ErrDeadlineExceeded}},
+
+ {50 * time.Millisecond, [2]error{nil, os.ErrDeadlineExceeded}},
+}
+
+func TestAcceptTimeout(t *testing.T) {
+ testenv.SkipFlaky(t, 17948)
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ var wg sync.WaitGroup
+ for i, tt := range acceptTimeoutTests {
+ if tt.timeout < 0 {
+ wg.Add(1)
+ go func() {
+ defer wg.Done()
+ d := Dialer{Timeout: 100 * time.Millisecond}
+ c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ c.Close()
+ }()
+ }
+
+ if err := ln.(*TCPListener).SetDeadline(time.Now().Add(tt.timeout)); err != nil {
+ t.Fatalf("$%d: %v", i, err)
+ }
+ for j, xerr := range tt.xerrs {
+ for {
+ c, err := ln.Accept()
+ if xerr != nil {
+ if perr := parseAcceptError(err); perr != nil {
+ t.Errorf("#%d/%d: %v", i, j, perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("#%d/%d: %v", i, j, err)
+ }
+ }
+ if err == nil {
+ c.Close()
+ time.Sleep(10 * time.Millisecond)
+ continue
+ }
+ break
+ }
+ }
+ }
+ wg.Wait()
+}
+
+func TestAcceptTimeoutMustReturn(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ max := time.NewTimer(time.Second)
+ defer max.Stop()
+ ch := make(chan error)
+ go func() {
+ if err := ln.(*TCPListener).SetDeadline(noDeadline); err != nil {
+ t.Error(err)
+ }
+ if err := ln.(*TCPListener).SetDeadline(time.Now().Add(10 * time.Millisecond)); err != nil {
+ t.Error(err)
+ }
+ c, err := ln.Accept()
+ if err == nil {
+ c.Close()
+ }
+ ch <- err
+ }()
+
+ select {
+ case <-max.C:
+ ln.Close()
+ <-ch // wait for tester goroutine to stop
+ t.Fatal("Accept didn't return in an expected time")
+ case err := <-ch:
+ if perr := parseAcceptError(err); perr != nil {
+ t.Error(perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatal(err)
+ }
+ }
+}
+
+func TestAcceptTimeoutMustNotReturn(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ max := time.NewTimer(100 * time.Millisecond)
+ defer max.Stop()
+ ch := make(chan error)
+ go func() {
+ if err := ln.(*TCPListener).SetDeadline(time.Now().Add(-5 * time.Second)); err != nil {
+ t.Error(err)
+ }
+ if err := ln.(*TCPListener).SetDeadline(noDeadline); err != nil {
+ t.Error(err)
+ }
+ _, err := ln.Accept()
+ ch <- err
+ }()
+
+ select {
+ case err := <-ch:
+ if perr := parseAcceptError(err); perr != nil {
+ t.Error(perr)
+ }
+ t.Fatalf("expected Accept to not return, but it returned with %v", err)
+ case <-max.C:
+ ln.Close()
+ <-ch // wait for tester goroutine to stop
+ }
+}
+
+var readTimeoutTests = []struct {
+ timeout time.Duration
+ xerrs [2]error // expected errors in transition
+}{
+ // Tests that read deadlines work, even if there's data ready
+ // to be read.
+ {-5 * time.Second, [2]error{os.ErrDeadlineExceeded, os.ErrDeadlineExceeded}},
+
+ {50 * time.Millisecond, [2]error{nil, os.ErrDeadlineExceeded}},
+}
+
+func TestReadTimeout(t *testing.T) {
+ handler := func(ls *localServer, ln Listener) {
+ c, err := ln.Accept()
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ c.Write([]byte("READ TIMEOUT TEST"))
+ defer c.Close()
+ }
+ ls, err := newLocalServer("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ls.teardown()
+ if err := ls.buildup(handler); err != nil {
+ t.Fatal(err)
+ }
+
+ c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ for i, tt := range readTimeoutTests {
+ if err := c.SetReadDeadline(time.Now().Add(tt.timeout)); err != nil {
+ t.Fatalf("#%d: %v", i, err)
+ }
+ var b [1]byte
+ for j, xerr := range tt.xerrs {
+ for {
+ n, err := c.Read(b[:])
+ if xerr != nil {
+ if perr := parseReadError(err); perr != nil {
+ t.Errorf("#%d/%d: %v", i, j, perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("#%d/%d: %v", i, j, err)
+ }
+ }
+ if err == nil {
+ time.Sleep(tt.timeout / 3)
+ continue
+ }
+ if n != 0 {
+ t.Fatalf("#%d/%d: read %d; want 0", i, j, n)
+ }
+ break
+ }
+ }
+ }
+}
+
+func TestReadTimeoutMustNotReturn(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ max := time.NewTimer(100 * time.Millisecond)
+ defer max.Stop()
+ ch := make(chan error)
+ go func() {
+ if err := c.SetDeadline(time.Now().Add(-5 * time.Second)); err != nil {
+ t.Error(err)
+ }
+ if err := c.SetWriteDeadline(time.Now().Add(-5 * time.Second)); err != nil {
+ t.Error(err)
+ }
+ if err := c.SetReadDeadline(noDeadline); err != nil {
+ t.Error(err)
+ }
+ var b [1]byte
+ _, err := c.Read(b[:])
+ ch <- err
+ }()
+
+ select {
+ case err := <-ch:
+ if perr := parseReadError(err); perr != nil {
+ t.Error(perr)
+ }
+ t.Fatalf("expected Read to not return, but it returned with %v", err)
+ case <-max.C:
+ c.Close()
+ err := <-ch // wait for tester goroutine to stop
+ if perr := parseReadError(err); perr != nil {
+ t.Error(perr)
+ }
+ if nerr, ok := err.(Error); !ok || nerr.Timeout() || nerr.Temporary() {
+ t.Fatal(err)
+ }
+ }
+}
+
+var readFromTimeoutTests = []struct {
+ timeout time.Duration
+ xerrs [2]error // expected errors in transition
+}{
+ // Tests that read deadlines work, even if there's data ready
+ // to be read.
+ {-5 * time.Second, [2]error{os.ErrDeadlineExceeded, os.ErrDeadlineExceeded}},
+
+ {50 * time.Millisecond, [2]error{nil, os.ErrDeadlineExceeded}},
+}
+
+func TestReadFromTimeout(t *testing.T) {
+ ch := make(chan Addr)
+ defer close(ch)
+ handler := func(ls *localPacketServer, c PacketConn) {
+ if dst, ok := <-ch; ok {
+ c.WriteTo([]byte("READFROM TIMEOUT TEST"), dst)
+ }
+ }
+ ls, err := newLocalPacketServer("udp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ls.teardown()
+ if err := ls.buildup(handler); err != nil {
+ t.Fatal(err)
+ }
+
+ host, _, err := SplitHostPort(ls.PacketConn.LocalAddr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ c, err := ListenPacket(ls.PacketConn.LocalAddr().Network(), JoinHostPort(host, "0"))
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+ ch <- c.LocalAddr()
+
+ for i, tt := range readFromTimeoutTests {
+ if err := c.SetReadDeadline(time.Now().Add(tt.timeout)); err != nil {
+ t.Fatalf("#%d: %v", i, err)
+ }
+ var b [1]byte
+ for j, xerr := range tt.xerrs {
+ for {
+ n, _, err := c.ReadFrom(b[:])
+ if xerr != nil {
+ if perr := parseReadError(err); perr != nil {
+ t.Errorf("#%d/%d: %v", i, j, perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("#%d/%d: %v", i, j, err)
+ }
+ }
+ if err == nil {
+ time.Sleep(tt.timeout / 3)
+ continue
+ }
+ if nerr, ok := err.(Error); ok && nerr.Timeout() && n != 0 {
+ t.Fatalf("#%d/%d: read %d; want 0", i, j, n)
+ }
+ break
+ }
+ }
+ }
+}
+
+var writeTimeoutTests = []struct {
+ timeout time.Duration
+ xerrs [2]error // expected errors in transition
+}{
+ // Tests that write deadlines work, even if there's buffer
+ // space available to write.
+ {-5 * time.Second, [2]error{os.ErrDeadlineExceeded, os.ErrDeadlineExceeded}},
+
+ {10 * time.Millisecond, [2]error{nil, os.ErrDeadlineExceeded}},
+}
+
+func TestWriteTimeout(t *testing.T) {
+ t.Parallel()
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ for i, tt := range writeTimeoutTests {
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ if err := c.SetWriteDeadline(time.Now().Add(tt.timeout)); err != nil {
+ t.Fatalf("#%d: %v", i, err)
+ }
+ for j, xerr := range tt.xerrs {
+ for {
+ n, err := c.Write([]byte("WRITE TIMEOUT TEST"))
+ if xerr != nil {
+ if perr := parseWriteError(err); perr != nil {
+ t.Errorf("#%d/%d: %v", i, j, perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("#%d/%d: %v", i, j, err)
+ }
+ }
+ if err == nil {
+ time.Sleep(tt.timeout / 3)
+ continue
+ }
+ if n != 0 {
+ t.Fatalf("#%d/%d: wrote %d; want 0", i, j, n)
+ }
+ break
+ }
+ }
+ }
+}
+
+func TestWriteTimeoutMustNotReturn(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ max := time.NewTimer(100 * time.Millisecond)
+ defer max.Stop()
+ ch := make(chan error)
+ go func() {
+ if err := c.SetDeadline(time.Now().Add(-5 * time.Second)); err != nil {
+ t.Error(err)
+ }
+ if err := c.SetReadDeadline(time.Now().Add(-5 * time.Second)); err != nil {
+ t.Error(err)
+ }
+ if err := c.SetWriteDeadline(noDeadline); err != nil {
+ t.Error(err)
+ }
+ var b [1]byte
+ for {
+ if _, err := c.Write(b[:]); err != nil {
+ ch <- err
+ break
+ }
+ }
+ }()
+
+ select {
+ case err := <-ch:
+ if perr := parseWriteError(err); perr != nil {
+ t.Error(perr)
+ }
+ t.Fatalf("expected Write to not return, but it returned with %v", err)
+ case <-max.C:
+ c.Close()
+ err := <-ch // wait for tester goroutine to stop
+ if perr := parseWriteError(err); perr != nil {
+ t.Error(perr)
+ }
+ if nerr, ok := err.(Error); !ok || nerr.Timeout() || nerr.Temporary() {
+ t.Fatal(err)
+ }
+ }
+}
+
+var writeToTimeoutTests = []struct {
+ timeout time.Duration
+ xerrs [2]error // expected errors in transition
+}{
+ // Tests that write deadlines work, even if there's buffer
+ // space available to write.
+ {-5 * time.Second, [2]error{os.ErrDeadlineExceeded, os.ErrDeadlineExceeded}},
+
+ {10 * time.Millisecond, [2]error{nil, os.ErrDeadlineExceeded}},
+}
+
+func TestWriteToTimeout(t *testing.T) {
+ t.Parallel()
+
+ c1, err := newLocalPacketListener("udp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c1.Close()
+
+ host, _, err := SplitHostPort(c1.LocalAddr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ for i, tt := range writeToTimeoutTests {
+ c2, err := ListenPacket(c1.LocalAddr().Network(), JoinHostPort(host, "0"))
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c2.Close()
+
+ if err := c2.SetWriteDeadline(time.Now().Add(tt.timeout)); err != nil {
+ t.Fatalf("#%d: %v", i, err)
+ }
+ for j, xerr := range tt.xerrs {
+ for {
+ n, err := c2.WriteTo([]byte("WRITETO TIMEOUT TEST"), c1.LocalAddr())
+ if xerr != nil {
+ if perr := parseWriteError(err); perr != nil {
+ t.Errorf("#%d/%d: %v", i, j, perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatalf("#%d/%d: %v", i, j, err)
+ }
+ }
+ if err == nil {
+ time.Sleep(tt.timeout / 3)
+ continue
+ }
+ if n != 0 {
+ t.Fatalf("#%d/%d: wrote %d; want 0", i, j, n)
+ }
+ break
+ }
+ }
+ }
+}
+
+func TestReadTimeoutFluctuation(t *testing.T) {
+ t.Parallel()
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ max := time.NewTimer(time.Second)
+ defer max.Stop()
+ ch := make(chan error)
+ go timeoutReceiver(c, 100*time.Millisecond, 50*time.Millisecond, 250*time.Millisecond, ch)
+
+ select {
+ case <-max.C:
+ t.Fatal("Read took over 1s; expected 0.1s")
+ case err := <-ch:
+ if perr := parseReadError(err); perr != nil {
+ t.Error(perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatal(err)
+ }
+ }
+}
+
+func TestReadFromTimeoutFluctuation(t *testing.T) {
+ t.Parallel()
+
+ c1, err := newLocalPacketListener("udp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c1.Close()
+
+ c2, err := Dial(c1.LocalAddr().Network(), c1.LocalAddr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c2.Close()
+
+ max := time.NewTimer(time.Second)
+ defer max.Stop()
+ ch := make(chan error)
+ go timeoutPacketReceiver(c2.(PacketConn), 100*time.Millisecond, 50*time.Millisecond, 250*time.Millisecond, ch)
+
+ select {
+ case <-max.C:
+ t.Fatal("ReadFrom took over 1s; expected 0.1s")
+ case err := <-ch:
+ if perr := parseReadError(err); perr != nil {
+ t.Error(perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatal(err)
+ }
+ }
+}
+
+func TestWriteTimeoutFluctuation(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ d := time.Second
+ if iOS() {
+ d = 3 * time.Second // see golang.org/issue/10775
+ }
+ max := time.NewTimer(d)
+ defer max.Stop()
+ ch := make(chan error)
+ go timeoutTransmitter(c, 100*time.Millisecond, 50*time.Millisecond, 250*time.Millisecond, ch)
+
+ select {
+ case <-max.C:
+ t.Fatalf("Write took over %v; expected 0.1s", d)
+ case err := <-ch:
+ if perr := parseWriteError(err); perr != nil {
+ t.Error(perr)
+ }
+ if !isDeadlineExceeded(err) {
+ t.Fatal(err)
+ }
+ }
+}
+
+func TestVariousDeadlines(t *testing.T) {
+ t.Parallel()
+ testVariousDeadlines(t)
+}
+
+func TestVariousDeadlines1Proc(t *testing.T) {
+ // Cannot use t.Parallel - modifies global GOMAXPROCS.
+ if testing.Short() {
+ t.Skip("skipping in short mode")
+ }
+ defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(1))
+ testVariousDeadlines(t)
+}
+
+func TestVariousDeadlines4Proc(t *testing.T) {
+ // Cannot use t.Parallel - modifies global GOMAXPROCS.
+ if testing.Short() {
+ t.Skip("skipping in short mode")
+ }
+ defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(4))
+ testVariousDeadlines(t)
+}
+
+type neverEnding byte
+
+func (b neverEnding) Read(p []byte) (int, error) {
+ for i := range p {
+ p[i] = byte(b)
+ }
+ return len(p), nil
+}
+
+func testVariousDeadlines(t *testing.T) {
+ if runtime.GOOS == "plan9" {
+ t.Skip("skipping test on plan9; see golang.org/issue/26945")
+ }
+ type result struct {
+ n int64
+ err error
+ d time.Duration
+ }
+
+ handler := func(ls *localServer, ln Listener) {
+ for {
+ c, err := ln.Accept()
+ if err != nil {
+ break
+ }
+ c.Read(make([]byte, 1)) // wait for client to close connection
+ c.Close()
+ }
+ }
+ ls, err := newLocalServer("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ls.teardown()
+ if err := ls.buildup(handler); err != nil {
+ t.Fatal(err)
+ }
+
+ for _, timeout := range []time.Duration{
+ 1 * time.Nanosecond,
+ 2 * time.Nanosecond,
+ 5 * time.Nanosecond,
+ 50 * time.Nanosecond,
+ 100 * time.Nanosecond,
+ 200 * time.Nanosecond,
+ 500 * time.Nanosecond,
+ 750 * time.Nanosecond,
+ 1 * time.Microsecond,
+ 5 * time.Microsecond,
+ 25 * time.Microsecond,
+ 250 * time.Microsecond,
+ 500 * time.Microsecond,
+ 1 * time.Millisecond,
+ 5 * time.Millisecond,
+ 100 * time.Millisecond,
+ 250 * time.Millisecond,
+ 500 * time.Millisecond,
+ 1 * time.Second,
+ } {
+ numRuns := 3
+ if testing.Short() {
+ numRuns = 1
+ if timeout > 500*time.Microsecond {
+ continue
+ }
+ }
+ for run := 0; run < numRuns; run++ {
+ name := fmt.Sprintf("%v %d/%d", timeout, run, numRuns)
+ t.Log(name)
+
+ tooSlow := time.NewTimer(5 * time.Second)
+ defer tooSlow.Stop()
+
+ c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ ch := make(chan result, 1)
+ go func() {
+ t0 := time.Now()
+ if err := c.SetDeadline(t0.Add(timeout)); err != nil {
+ t.Error(err)
+ }
+ n, err := io.Copy(io.Discard, c)
+ dt := time.Since(t0)
+ c.Close()
+ ch <- result{n, err, dt}
+ }()
+
+ select {
+ case res := <-ch:
+ if nerr, ok := res.err.(Error); ok && nerr.Timeout() {
+ t.Logf("%v: good timeout after %v; %d bytes", name, res.d, res.n)
+ } else {
+ t.Fatalf("%v: Copy = %d, %v; want timeout", name, res.n, res.err)
+ }
+ case <-tooSlow.C:
+ t.Fatalf("%v: client stuck in Dial+Copy", name)
+ }
+ }
+ }
+}
+
+// TestReadWriteProlongedTimeout tests concurrent deadline
+// modification. Known to cause data races in the past.
+func TestReadWriteProlongedTimeout(t *testing.T) {
+ t.Parallel()
+
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ handler := func(ls *localServer, ln Listener) {
+ c, err := ln.Accept()
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ defer c.Close()
+
+ var wg sync.WaitGroup
+ wg.Add(2)
+ go func() {
+ defer wg.Done()
+ var b [1]byte
+ for {
+ if err := c.SetReadDeadline(time.Now().Add(time.Hour)); err != nil {
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ t.Error(err)
+ return
+ }
+ if _, err := c.Read(b[:]); err != nil {
+ if perr := parseReadError(err); perr != nil {
+ t.Error(perr)
+ }
+ return
+ }
+ }
+ }()
+ go func() {
+ defer wg.Done()
+ var b [1]byte
+ for {
+ if err := c.SetWriteDeadline(time.Now().Add(time.Hour)); err != nil {
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ t.Error(err)
+ return
+ }
+ if _, err := c.Write(b[:]); err != nil {
+ if perr := parseWriteError(err); perr != nil {
+ t.Error(perr)
+ }
+ return
+ }
+ }
+ }()
+ wg.Wait()
+ }
+ ls, err := newLocalServer("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ls.teardown()
+ if err := ls.buildup(handler); err != nil {
+ t.Fatal(err)
+ }
+
+ c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ var b [1]byte
+ for i := 0; i < 1000; i++ {
+ c.Write(b[:])
+ c.Read(b[:])
+ }
+}
+
+func TestReadWriteDeadlineRace(t *testing.T) {
+ t.Parallel()
+
+ N := 1000
+ if testing.Short() {
+ N = 50
+ }
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ var wg sync.WaitGroup
+ wg.Add(3)
+ go func() {
+ defer wg.Done()
+ tic := time.NewTicker(2 * time.Microsecond)
+ defer tic.Stop()
+ for i := 0; i < N; i++ {
+ if err := c.SetReadDeadline(time.Now().Add(2 * time.Microsecond)); err != nil {
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ break
+ }
+ if err := c.SetWriteDeadline(time.Now().Add(2 * time.Microsecond)); err != nil {
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ break
+ }
+ <-tic.C
+ }
+ }()
+ go func() {
+ defer wg.Done()
+ var b [1]byte
+ for i := 0; i < N; i++ {
+ c.Read(b[:]) // ignore possible timeout errors
+ }
+ }()
+ go func() {
+ defer wg.Done()
+ var b [1]byte
+ for i := 0; i < N; i++ {
+ c.Write(b[:]) // ignore possible timeout errors
+ }
+ }()
+ wg.Wait() // wait for tester goroutine to stop
+}
+
+// Issue 35367.
+func TestConcurrentSetDeadline(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ const goroutines = 8
+ const conns = 10
+ const tries = 100
+
+ var c [conns]Conn
+ for i := 0; i < conns; i++ {
+ c[i], err = Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c[i].Close()
+ }
+
+ var wg sync.WaitGroup
+ wg.Add(goroutines)
+ now := time.Now()
+ for i := 0; i < goroutines; i++ {
+ go func(i int) {
+ defer wg.Done()
+ // Make the deadlines steadily earlier,
+ // to trigger runtime adjusttimers calls.
+ for j := tries; j > 0; j-- {
+ for k := 0; k < conns; k++ {
+ c[k].SetReadDeadline(now.Add(2*time.Hour + time.Duration(i*j*k)*time.Second))
+ c[k].SetWriteDeadline(now.Add(1*time.Hour + time.Duration(i*j*k)*time.Second))
+ }
+ }
+ }(i)
+ }
+ wg.Wait()
+}
+
+// isDeadlineExceeded reports whether err is or wraps os.ErrDeadlineExceeded.
+// We also check that the error implements net.Error, and that the
+// Timeout method returns true.
+func isDeadlineExceeded(err error) bool {
+ nerr, ok := err.(Error)
+ if !ok {
+ return false
+ }
+ if !nerr.Timeout() {
+ return false
+ }
+ if !errors.Is(err, os.ErrDeadlineExceeded) {
+ return false
+ }
+ return true
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 15:56:33 +0000