3 files changed, 93 insertions, 17 deletions
diff --git a/tun/netstack/examples/http_client.go b/tun/netstack/examples/http_client.go
index 39b1c6d..ccd32ed 100644
--- a/tun/netstack/examples/http_client.go
+++ b/tun/netstack/examples/http_client.go
@@ -1,8 +1,8 @@
-// +build ignore
+//go:build ignore
 
 /* SPDX-License-Identifier: MIT
  *
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
  */
 
 package main
@@ -10,8 +10,8 @@ package main
 import (
 	"io"
 	"log"
-	"net"
 	"net/http"
+	"net/netip"
 
 	"golang.zx2c4.com/wireguard/conn"
 	"golang.zx2c4.com/wireguard/device"
@@ -20,17 +20,17 @@ import (
 
 func main() {
 	tun, tnet, err := netstack.CreateNetTUN(
-		[]net.IP{net.ParseIP("192.168.4.29")},
-		[]net.IP{net.ParseIP("8.8.8.8")},
+		[]netip.Addr{netip.MustParseAddr("192.168.4.28")},
+		[]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
+	err = dev.IpcSet(`private_key=087ec6e14bbed210e7215cdc73468dfa23f080a1bfb8665b2fd809bd99d28379
+public_key=c4c8e984c5322c8184c72265b92b250fdb63688705f504ba003c88f03393cf28
 allowed_ip=0.0.0.0/0
+endpoint=127.0.0.1:58120
 `)
 	err = dev.Up()
 	if err != nil {
@@ -42,7 +42,7 @@ allowed_ip=0.0.0.0/0
 			DialContext: tnet.DialContext,
 		},
 	}
-	resp, err := client.Get("https://www.zx2c4.com/ip")
+	resp, err := client.Get("http://192.168.4.29/")
 	if err != nil {
 		log.Panic(err)
 	}
diff --git a/tun/netstack/examples/http_server.go b/tun/netstack/examples/http_server.go
index c1fc753..f5b7a8f 100644
--- a/tun/netstack/examples/http_server.go
+++ b/tun/netstack/examples/http_server.go
@@ -1,8 +1,8 @@
-// +build ignore
+//go:build ignore
 
 /* SPDX-License-Identifier: MIT
  *
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
  */
 
 package main
@@ -12,6 +12,7 @@ import (
 	"log"
 	"net"
 	"net/http"
+	"net/netip"
 
 	"golang.zx2c4.com/wireguard/conn"
 	"golang.zx2c4.com/wireguard/device"
@@ -20,18 +21,18 @@ import (
 
 func main() {
 	tun, tnet, err := netstack.CreateNetTUN(
-		[]net.IP{net.ParseIP("192.168.4.29")},
-		[]net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")},
+		[]netip.Addr{netip.MustParseAddr("192.168.4.29")},
+		[]netip.Addr{netip.MustParseAddr("8.8.8.8"), netip.MustParseAddr("8.8.4.4")},
 		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
+	dev.IpcSet(`private_key=003ed5d73b55806c30de3f8a7bdab38af13539220533055e635690b8b87ad641
+listen_port=58120
+public_key=f928d4f6c1b86c12f2562c10b07c555c5c57fd00f59e90c8d8d88767271cbf7c
+allowed_ip=192.168.4.28/32
 persistent_keepalive_interval=25
 `)
 	dev.Up()
diff --git a/tun/netstack/examples/ping_client.go b/tun/netstack/examples/ping_client.go
new file mode 100644
index 0000000..2eef0fb
--- /dev/null
+++ b/tun/netstack/examples/ping_client.go
@@ -0,0 +1,75 @@
+//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))
+}