1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
// Copyright 2017 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 darwin dragonfly freebsd linux netbsd openbsd solaris
package net
import (
"bytes"
"syscall"
"testing"
)
func TestRawConn(t *testing.T) {
handler := func(ls *localServer, ln Listener) {
c, err := ln.Accept()
if err != nil {
t.Error(err)
return
}
defer c.Close()
var b [32]byte
n, err := c.Read(b[:])
if err != nil {
t.Error(err)
return
}
if _, err := c.Write(b[:n]); err != nil {
t.Error(err)
return
}
}
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()
cc, err := c.(*TCPConn).SyscallConn()
if err != nil {
t.Fatal(err)
}
var operr error
data := []byte("HELLO-R-U-THERE")
err = cc.Write(func(s uintptr) bool {
_, operr = syscall.Write(int(s), data)
if operr == syscall.EAGAIN {
return false
}
return true
})
if err != nil || operr != nil {
t.Fatal(err, operr)
}
var nr int
var b [32]byte
err = cc.Read(func(s uintptr) bool {
nr, operr = syscall.Read(int(s), b[:])
if operr == syscall.EAGAIN {
return false
}
return true
})
if err != nil || operr != nil {
t.Fatal(err, operr)
}
if bytes.Compare(b[:nr], data) != 0 {
t.Fatalf("got %#v; want %#v", b[:nr], data)
}
fn := func(s uintptr) {
operr = syscall.SetsockoptInt(int(s), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
}
err = cc.Control(fn)
if err != nil || operr != nil {
t.Fatal(err, operr)
}
c.Close()
err = cc.Control(fn)
if err == nil {
t.Fatal("should fail")
}
}
|
