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
|
// Copyright 2014 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 icmp
import (
"encoding/binary"
"net"
"reflect"
"runtime"
"testing"
"golang.org/x/net/internal/socket"
"golang.org/x/net/ipv4"
)
type ipv4HeaderTest struct {
wireHeaderFromKernel [ipv4.HeaderLen]byte
wireHeaderFromTradBSDKernel [ipv4.HeaderLen]byte
Header *ipv4.Header
}
var ipv4HeaderLittleEndianTest = ipv4HeaderTest{
// TODO(mikio): Add platform dependent wire header formats when
// we support new platforms.
wireHeaderFromKernel: [ipv4.HeaderLen]byte{
0x45, 0x01, 0xbe, 0xef,
0xca, 0xfe, 0x45, 0xdc,
0xff, 0x01, 0xde, 0xad,
172, 16, 254, 254,
192, 168, 0, 1,
},
wireHeaderFromTradBSDKernel: [ipv4.HeaderLen]byte{
0x45, 0x01, 0xef, 0xbe,
0xca, 0xfe, 0x45, 0xdc,
0xff, 0x01, 0xde, 0xad,
172, 16, 254, 254,
192, 168, 0, 1,
},
Header: &ipv4.Header{
Version: ipv4.Version,
Len: ipv4.HeaderLen,
TOS: 1,
TotalLen: 0xbeef,
ID: 0xcafe,
Flags: ipv4.DontFragment,
FragOff: 1500,
TTL: 255,
Protocol: 1,
Checksum: 0xdead,
Src: net.IPv4(172, 16, 254, 254),
Dst: net.IPv4(192, 168, 0, 1),
},
}
func TestParseIPv4Header(t *testing.T) {
tt := &ipv4HeaderLittleEndianTest
if socket.NativeEndian != binary.LittleEndian {
t.Skip("no test for non-little endian machine yet")
}
var wh []byte
switch runtime.GOOS {
case "darwin":
wh = tt.wireHeaderFromTradBSDKernel[:]
case "freebsd":
if freebsdVersion >= 1000000 {
wh = tt.wireHeaderFromKernel[:]
} else {
wh = tt.wireHeaderFromTradBSDKernel[:]
}
default:
wh = tt.wireHeaderFromKernel[:]
}
h, err := ParseIPv4Header(wh)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(h, tt.Header) {
t.Fatalf("got %#v; want %#v", h, tt.Header)
}
}
|
