From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: wireguard@lists.zx2c4.com
Subject: Re: Userspace Networking Stack + WireGuard + Go
Date: Fri, 15 Jan 2021 00:25:37 +0100 [thread overview]
Message-ID: <YADS8ehdQltHFpum@zx2c4.com> (raw)
In-Reply-To: <X/8aDfdkod+rCPqK@zx2c4.com>
Another example, for the curious. This one hosts a web server entirely in
userspace. All the kernel sees are incoming and outgoing encrypted
WireGuard UDP packets.
package main
import (
"io"
"log"
"net"
"net/http"
"golang.zx2c4.com/wireguard/device"
"golang.zx2c4.com/wireguard/tun"
)
func main() {
tun, tnet, err := tun.CreateNetTUN(
[]net.IP{net.ParseIP("192.168.4.29")},
[]net.IP{net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4")},
1420,
)
if err != nil {
log.Panic(err)
}
dev := device.NewDevice(tun, &device.Logger{log.Default(), log.Default(), log.Default()})
dev.IpcSet(`private_key=a8dac1d8a70a751f0f699fb14ba1cff7b79cf4fbd8f09f44c6e6a90d0369604f
public_key=25123c5dcd3328ff645e4f2a3fce0d754400d3887a0cb7c56f0267e20fbf3c5b
endpoint=163.172.161.0:12912
allowed_ip=0.0.0.0/0
persistent_keepalive_interval=25
`)
dev.Up()
listener, err := tnet.ListenTCP(&net.TCPAddr{Port: 80})
if err != nil {
log.Panicln(err)
}
http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
log.Printf("> %s - %s - %s", request.RemoteAddr, request.URL.String(), request.UserAgent())
io.WriteString(writer, "Hello from userspace TCP!")
})
err = http.Serve(listener, nil)
if err != nil {
log.Panicln(err)
}
}
Here's a gif: https://data.zx2c4.com/wireguard-go-userspace-networking-to-host-a-server.gif
prev parent reply other threads:[~2021-01-14 23:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-13 16:04 Jason A. Donenfeld
2021-01-13 16:26 ` Julian Orth
2021-01-13 16:33 ` network namespace wireguard routing [Was: Re: Userspace Networking Stack + WireGuard + Go] Jason A. Donenfeld
2021-01-13 16:40 ` Julian Orth
2021-01-13 16:46 ` Toke Høiland-Jørgensen
2021-01-13 16:49 ` Jason A. Donenfeld
2021-01-14 10:44 ` Toke Høiland-Jørgensen
2021-01-15 8:12 ` Userspace Networking Stack + WireGuard + Go Marc-André Lureau
2021-01-14 23:25 ` Jason A. Donenfeld [this message]
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