mirror of
https://git.zx2c4.com/wireguard-go
synced 2024-11-15 09:15:14 +01:00
b9669b734e
Provide a PacketConn interface for netstack's ICMP endpoint; netstack currently only provides EchoRequest/EchoResponse ICMP support, so this code exposes only an interface for doing ping. Signed-off-by: Thomas Ptacek <thomas@sockpuppet.org> [Jason: rework structure, match std go interfaces, add example code] Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
//go:build ignore
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// +build ignore
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
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*/
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package main
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import (
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"bytes"
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"log"
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"math/rand"
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"time"
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"golang.org/x/net/icmp"
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"golang.org/x/net/ipv4"
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"golang.zx2c4.com/go118/netip"
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"golang.zx2c4.com/wireguard/conn"
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"golang.zx2c4.com/wireguard/device"
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"golang.zx2c4.com/wireguard/tun/netstack"
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)
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func main() {
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tun, tnet, err := netstack.CreateNetTUN(
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[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
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[]netip.Addr{netip.MustParseAddr("8.8.8.8")},
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1420)
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if err != nil {
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log.Panic(err)
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}
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dev := device.NewDevice(tun, conn.NewDefaultBind(), device.NewLogger(device.LogLevelVerbose, ""))
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dev.IpcSet(`private_key=a8dac1d8a70a751f0f699fb14ba1cff7b79cf4fbd8f09f44c6e6a90d0369604f
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public_key=25123c5dcd3328ff645e4f2a3fce0d754400d3887a0cb7c56f0267e20fbf3c5b
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endpoint=163.172.161.0:12912
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allowed_ip=0.0.0.0/0
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`)
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err = dev.Up()
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if err != nil {
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log.Panic(err)
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}
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socket, err := tnet.Dial("ping4", "zx2c4.com")
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if err != nil {
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log.Panic(err)
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}
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requestPing := icmp.Echo{
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Seq: rand.Intn(1 << 16),
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Data: []byte("gopher burrow"),
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}
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icmpBytes, _ := (&icmp.Message{Type: ipv4.ICMPTypeEcho, Code: 0, Body: &requestPing}).Marshal(nil)
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socket.SetReadDeadline(time.Now().Add(time.Second * 10))
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start := time.Now()
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_, err = socket.Write(icmpBytes)
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if err != nil {
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log.Panic(err)
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}
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n, err := socket.Read(icmpBytes[:])
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if err != nil {
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log.Panic(err)
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}
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replyPacket, err := icmp.ParseMessage(1, icmpBytes[:n])
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if err != nil {
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log.Panic(err)
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}
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replyPing, ok := replyPacket.Body.(*icmp.Echo)
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if !ok {
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log.Panicf("invalid reply type: %v", replyPacket)
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}
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if !bytes.Equal(replyPing.Data, requestPing.Data) || replyPing.Seq != requestPing.Seq {
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log.Panicf("invalid ping reply: %v", replyPing)
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}
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log.Printf("Ping latency: %v", time.Since(start))
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}
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