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Merge branch 'release-branch.go1.23' of https://go.googlesource.com/go …
…into tailscale.go1.23 Bump Go from 1.23.1 to 1.23.3.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| go1.23.1 | ||
| time 2024-08-29T20:56:24Z | ||
| go1.23.3 | ||
| time 2024-11-06T18:46:45Z |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| // Copyright 2024 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 os_test | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "errors" | ||
| "io" | ||
| "math/rand/v2" | ||
| "net" | ||
| "os" | ||
| "runtime" | ||
| "sync" | ||
| "testing" | ||
|
|
||
| "golang.org/x/net/nettest" | ||
| ) | ||
|
|
||
| // Exercise sendfile/splice fast paths with a moderately large file. | ||
| // | ||
| // https://go.dev/issue/70000 | ||
|
|
||
| func TestLargeCopyViaNetwork(t *testing.T) { | ||
| const size = 10 * 1024 * 1024 | ||
| dir := t.TempDir() | ||
|
|
||
| src, err := os.Create(dir + "/src") | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| defer src.Close() | ||
| if _, err := io.CopyN(src, newRandReader(), size); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if _, err := src.Seek(0, 0); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| dst, err := os.Create(dir + "/dst") | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| defer dst.Close() | ||
|
|
||
| client, server := createSocketPair(t, "tcp") | ||
| var wg sync.WaitGroup | ||
| wg.Add(2) | ||
| go func() { | ||
| defer wg.Done() | ||
| if n, err := io.Copy(dst, server); n != size || err != nil { | ||
| t.Errorf("copy to destination = %v, %v; want %v, nil", n, err, size) | ||
| } | ||
| }() | ||
| go func() { | ||
| defer wg.Done() | ||
| defer client.Close() | ||
| if n, err := io.Copy(client, src); n != size || err != nil { | ||
| t.Errorf("copy from source = %v, %v; want %v, nil", n, err, size) | ||
| } | ||
| }() | ||
| wg.Wait() | ||
|
|
||
| if _, err := dst.Seek(0, 0); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if err := compareReaders(dst, io.LimitReader(newRandReader(), size)); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| } | ||
|
|
||
| func compareReaders(a, b io.Reader) error { | ||
| bufa := make([]byte, 4096) | ||
| bufb := make([]byte, 4096) | ||
| for { | ||
| na, erra := io.ReadFull(a, bufa) | ||
| if erra != nil && erra != io.EOF { | ||
| return erra | ||
| } | ||
| nb, errb := io.ReadFull(b, bufb) | ||
| if errb != nil && errb != io.EOF { | ||
| return errb | ||
| } | ||
| if !bytes.Equal(bufa[:na], bufb[:nb]) { | ||
| return errors.New("contents mismatch") | ||
| } | ||
| if erra == io.EOF && errb == io.EOF { | ||
| break | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| type randReader struct { | ||
| rand *rand.Rand | ||
| } | ||
|
|
||
| func newRandReader() *randReader { | ||
| return &randReader{rand.New(rand.NewPCG(0, 0))} | ||
| } | ||
|
|
||
| func (r *randReader) Read(p []byte) (int, error) { | ||
| var v uint64 | ||
| var n int | ||
| for i := range p { | ||
| if n == 0 { | ||
| v = r.rand.Uint64() | ||
| n = 8 | ||
| } | ||
| p[i] = byte(v & 0xff) | ||
| v >>= 8 | ||
| n-- | ||
| } | ||
| return len(p), nil | ||
| } | ||
|
|
||
| func createSocketPair(t *testing.T, proto string) (client, server net.Conn) { | ||
| t.Helper() | ||
| if !nettest.TestableNetwork(proto) { | ||
| t.Skipf("%s does not support %q", runtime.GOOS, proto) | ||
| } | ||
|
|
||
| ln, err := nettest.NewLocalListener(proto) | ||
| if err != nil { | ||
| t.Fatalf("NewLocalListener error: %v", err) | ||
| } | ||
| t.Cleanup(func() { | ||
| if ln != nil { | ||
| ln.Close() | ||
| } | ||
| if client != nil { | ||
| client.Close() | ||
| } | ||
| if server != nil { | ||
| server.Close() | ||
| } | ||
| }) | ||
| ch := make(chan struct{}) | ||
| go func() { | ||
| var err error | ||
| server, err = ln.Accept() | ||
| if err != nil { | ||
| t.Errorf("Accept new connection error: %v", err) | ||
| } | ||
| ch <- struct{}{} | ||
| }() | ||
| client, err = net.Dial(proto, ln.Addr().String()) | ||
| <-ch | ||
| if err != nil { | ||
| t.Fatalf("Dial new connection error: %v", err) | ||
| } | ||
| return client, server | ||
| } |
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