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mail
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addrselect.go
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addrselect_test.go
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conn_test.go
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dial.go
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dial_test.go
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dial_unix_test.go
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dnsclient.go
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dnsclient_test.go
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dnsclient_unix.go
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dnsclient_unix_test.go
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dnsconfig_unix.go
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dnsname_test.go
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example_test.go
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external_test.go
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fd_plan9.go
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file.go
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hosts.go
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ip.go
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lookup.go
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lookup_windows.go
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mockserver_test.go
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net.go
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net_fake.go
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net_test.go
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packetconn_test.go
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parse.go
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parse_test.go
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pipe.go
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pipe_test.go
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platform_test.go
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port.go
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rawconn.go
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rawconn_test.go
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sendfile_linux.go
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sendfile_stub.go
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sendfile_test.go
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sendfile_unix_alt.go
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sendfile_windows.go
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server_test.go
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sock_bsd.go
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sock_cloexec.go
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sock_linux.go
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splice_linux.go
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splice_test.go
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sys_cloexec.go
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tcpsock.go
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Code Editor : sendfile_test.go
// 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" "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(ioutil.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() }
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