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-rw-r--r--src/net/sendfile_test.go380
1 files changed, 380 insertions, 0 deletions
diff --git a/src/net/sendfile_test.go b/src/net/sendfile_test.go
new file mode 100644
index 0000000..d6057fd
--- /dev/null
+++ b/src/net/sendfile_test.go
@@ -0,0 +1,380 @@
+// Copyright 2016 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 (
+ "bytes"
+ "crypto/sha256"
+ "encoding/hex"
+ "errors"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "os"
+ "runtime"
+ "sync"
+ "testing"
+ "time"
+)
+
+const (
+ newton = "../testdata/Isaac.Newton-Opticks.txt"
+ newtonLen = 567198
+ newtonSHA256 = "d4a9ac22462b35e7821a4f2706c211093da678620a8f9997989ee7cf8d507bbd"
+)
+
+func TestSendfile(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ errc := make(chan error, 1)
+ go func(ln Listener) {
+ // Wait for a connection.
+ conn, err := ln.Accept()
+ if err != nil {
+ errc <- err
+ close(errc)
+ return
+ }
+
+ go func() {
+ defer close(errc)
+ defer conn.Close()
+
+ f, err := os.Open(newton)
+ if err != nil {
+ errc <- err
+ return
+ }
+ defer f.Close()
+
+ // Return file data using io.Copy, which should use
+ // sendFile if available.
+ sbytes, err := io.Copy(conn, f)
+ if err != nil {
+ errc <- err
+ return
+ }
+
+ if sbytes != newtonLen {
+ errc <- fmt.Errorf("sent %d bytes; expected %d", sbytes, newtonLen)
+ return
+ }
+ }()
+ }(ln)
+
+ // Connect to listener to retrieve file and verify digest matches
+ // expected.
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ h := sha256.New()
+ rbytes, err := io.Copy(h, c)
+ if err != nil {
+ t.Error(err)
+ }
+
+ if rbytes != newtonLen {
+ t.Errorf("received %d bytes; expected %d", rbytes, newtonLen)
+ }
+
+ if res := hex.EncodeToString(h.Sum(nil)); res != newtonSHA256 {
+ t.Error("retrieved data hash did not match")
+ }
+
+ for err := range errc {
+ t.Error(err)
+ }
+}
+
+func TestSendfileParts(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ errc := make(chan error, 1)
+ go func(ln Listener) {
+ // Wait for a connection.
+ conn, err := ln.Accept()
+ if err != nil {
+ errc <- err
+ close(errc)
+ return
+ }
+
+ go func() {
+ defer close(errc)
+ defer conn.Close()
+
+ f, err := os.Open(newton)
+ if err != nil {
+ errc <- err
+ return
+ }
+ defer f.Close()
+
+ for i := 0; i < 3; i++ {
+ // Return file data using io.CopyN, which should use
+ // sendFile if available.
+ _, err = io.CopyN(conn, f, 3)
+ if err != nil {
+ errc <- err
+ return
+ }
+ }
+ }()
+ }(ln)
+
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ buf := new(bytes.Buffer)
+ buf.ReadFrom(c)
+
+ if want, have := "Produced ", buf.String(); have != want {
+ t.Errorf("unexpected server reply %q, want %q", have, want)
+ }
+
+ for err := range errc {
+ t.Error(err)
+ }
+}
+
+func TestSendfileSeeked(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ const seekTo = 65 << 10
+ const sendSize = 10 << 10
+
+ errc := make(chan error, 1)
+ go func(ln Listener) {
+ // Wait for a connection.
+ conn, err := ln.Accept()
+ if err != nil {
+ errc <- err
+ close(errc)
+ return
+ }
+
+ go func() {
+ defer close(errc)
+ defer conn.Close()
+
+ f, err := os.Open(newton)
+ if err != nil {
+ errc <- err
+ return
+ }
+ defer f.Close()
+ if _, err := f.Seek(seekTo, os.SEEK_SET); err != nil {
+ errc <- err
+ return
+ }
+
+ _, err = io.CopyN(conn, f, sendSize)
+ if err != nil {
+ errc <- err
+ return
+ }
+ }()
+ }(ln)
+
+ c, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ buf := new(bytes.Buffer)
+ buf.ReadFrom(c)
+
+ if buf.Len() != sendSize {
+ t.Errorf("Got %d bytes; want %d", buf.Len(), sendSize)
+ }
+
+ for err := range errc {
+ t.Error(err)
+ }
+}
+
+// Test that sendfile doesn't put a pipe into blocking mode.
+func TestSendfilePipe(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9", "windows":
+ // These systems don't support deadlines on pipes.
+ t.Skipf("skipping on %s", runtime.GOOS)
+ }
+
+ t.Parallel()
+
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ r, w, err := os.Pipe()
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer w.Close()
+ defer r.Close()
+
+ copied := make(chan bool)
+
+ var wg sync.WaitGroup
+ wg.Add(1)
+ go func() {
+ // Accept a connection and copy 1 byte from the read end of
+ // the pipe to the connection. This will call into sendfile.
+ defer wg.Done()
+ conn, err := ln.Accept()
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ defer conn.Close()
+ _, err = io.CopyN(conn, r, 1)
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ // Signal the main goroutine that we've copied the byte.
+ close(copied)
+ }()
+
+ wg.Add(1)
+ go func() {
+ // Write 1 byte to the write end of the pipe.
+ defer wg.Done()
+ _, err := w.Write([]byte{'a'})
+ if err != nil {
+ t.Error(err)
+ }
+ }()
+
+ wg.Add(1)
+ go func() {
+ // Connect to the server started two goroutines up and
+ // discard any data that it writes.
+ defer wg.Done()
+ conn, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Error(err)
+ return
+ }
+ defer conn.Close()
+ io.Copy(io.Discard, conn)
+ }()
+
+ // Wait for the byte to be copied, meaning that sendfile has
+ // been called on the pipe.
+ <-copied
+
+ // Set a very short deadline on the read end of the pipe.
+ if err := r.SetDeadline(time.Now().Add(time.Microsecond)); err != nil {
+ t.Fatal(err)
+ }
+
+ wg.Add(1)
+ go func() {
+ // Wait for much longer than the deadline and write a byte
+ // to the pipe.
+ defer wg.Done()
+ time.Sleep(50 * time.Millisecond)
+ w.Write([]byte{'b'})
+ }()
+
+ // If this read does not time out, the pipe was incorrectly
+ // put into blocking mode.
+ _, err = r.Read(make([]byte, 1))
+ if err == nil {
+ t.Error("Read did not time out")
+ } else if !os.IsTimeout(err) {
+ t.Errorf("got error %v, expected a time out", err)
+ }
+
+ wg.Wait()
+}
+
+// Issue 43822: tests that returns EOF when conn write timeout.
+func TestSendfileOnWriteTimeoutExceeded(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+
+ errc := make(chan error, 1)
+ go func(ln Listener) (retErr error) {
+ defer func() {
+ errc <- retErr
+ close(errc)
+ }()
+
+ conn, err := ln.Accept()
+ if err != nil {
+ return err
+ }
+ defer conn.Close()
+
+ // Set the write deadline in the past(1h ago). It makes
+ // sure that it is always write timeout.
+ if err := conn.SetWriteDeadline(time.Now().Add(-1 * time.Hour)); err != nil {
+ return err
+ }
+
+ f, err := os.Open(newton)
+ if err != nil {
+ return err
+ }
+ defer f.Close()
+
+ _, err = io.Copy(conn, f)
+ if errors.Is(err, os.ErrDeadlineExceeded) {
+ return nil
+ }
+
+ if err == nil {
+ err = fmt.Errorf("expected ErrDeadlineExceeded, but got nil")
+ }
+ return err
+ }(ln)
+
+ conn, err := Dial("tcp", ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer conn.Close()
+
+ n, err := io.Copy(ioutil.Discard, conn)
+ if err != nil {
+ t.Fatalf("expected nil error, but got %v", err)
+ }
+ if n != 0 {
+ t.Fatalf("expected receive zero, but got %d byte(s)", n)
+ }
+
+ if err := <-errc; err != nil {
+ t.Fatal(err)
+ }
+}
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