91 lines
1.6 KiB
Go
91 lines
1.6 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"testing"
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)
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const (
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twain = "testdata/Mark.Twain-Tom.Sawyer.txt"
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twainLen = 387851
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twainSHA256 = "461eb7cb2d57d293fc680c836464c9125e4382be3596f7d415093ae9db8fcb0e"
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)
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func TestSendfile(t *testing.T) {
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ln, err := newLocalListener("tcp")
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if err != nil {
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t.Fatal(err)
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}
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defer ln.Close()
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errc := make(chan error, 1)
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go func(ln Listener) {
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// Wait for a connection.
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conn, err := ln.Accept()
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if err != nil {
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errc <- err
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close(errc)
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return
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}
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go func() {
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defer close(errc)
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defer conn.Close()
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f, err := os.Open(twain)
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if err != nil {
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errc <- err
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return
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}
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defer f.Close()
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// Return file data using io.Copy, which should use
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// sendFile if available.
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sbytes, err := io.Copy(conn, f)
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if err != nil {
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errc <- err
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return
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}
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if sbytes != twainLen {
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errc <- fmt.Errorf("sent %d bytes; expected %d", sbytes, twainLen)
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return
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}
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}()
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}(ln)
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// Connect to listener to retrieve file and verify digest matches
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// expected.
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c, err := Dial("tcp", ln.Addr().String())
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if err != nil {
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t.Fatal(err)
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}
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defer c.Close()
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h := sha256.New()
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rbytes, err := io.Copy(h, c)
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if err != nil {
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t.Error(err)
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}
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if rbytes != twainLen {
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t.Errorf("received %d bytes; expected %d", rbytes, twainLen)
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}
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if res := hex.EncodeToString(h.Sum(nil)); res != twainSHA256 {
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t.Error("retrieved data hash did not match")
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}
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for err := range errc {
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t.Error(err)
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}
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}
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