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
|
//go:build ignore
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main
import (
"bytes"
"log"
"math/rand"
"net/netip"
"time"
"golang.org/x/net/icmp"
"golang.org/x/net/ipv4"
"golang.zx2c4.com/wireguard/conn"
"golang.zx2c4.com/wireguard/device"
"golang.zx2c4.com/wireguard/tun/netstack"
)
func main() {
tun, tnet, err := netstack.CreateNetTUN(
[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
[]netip.Addr{netip.MustParseAddr("8.8.8.8")},
1420)
if err != nil {
log.Panic(err)
}
dev := device.NewDevice(tun, conn.NewDefaultBind(), device.NewLogger(device.LogLevelVerbose, ""))
dev.IpcSet(`private_key=a8dac1d8a70a751f0f699fb14ba1cff7b79cf4fbd8f09f44c6e6a90d0369604f
public_key=25123c5dcd3328ff645e4f2a3fce0d754400d3887a0cb7c56f0267e20fbf3c5b
endpoint=163.172.161.0:12912
allowed_ip=0.0.0.0/0
`)
err = dev.Up()
if err != nil {
log.Panic(err)
}
socket, err := tnet.Dial("ping4", "zx2c4.com")
if err != nil {
log.Panic(err)
}
requestPing := icmp.Echo{
Seq: rand.Intn(1 << 16),
Data: []byte("gopher burrow"),
}
icmpBytes, _ := (&icmp.Message{Type: ipv4.ICMPTypeEcho, Code: 0, Body: &requestPing}).Marshal(nil)
socket.SetReadDeadline(time.Now().Add(time.Second * 10))
start := time.Now()
_, err = socket.Write(icmpBytes)
if err != nil {
log.Panic(err)
}
n, err := socket.Read(icmpBytes[:])
if err != nil {
log.Panic(err)
}
replyPacket, err := icmp.ParseMessage(1, icmpBytes[:n])
if err != nil {
log.Panic(err)
}
replyPing, ok := replyPacket.Body.(*icmp.Echo)
if !ok {
log.Panicf("invalid reply type: %v", replyPacket)
}
if !bytes.Equal(replyPing.Data, requestPing.Data) || replyPing.Seq != requestPing.Seq {
log.Panicf("invalid ping reply: %v", replyPing)
}
log.Printf("Ping latency: %v", time.Since(start))
}
|
