udptlspipe basic implementation

device/device.go

@@ -6,6 +6,8 @@
 package device
 
 import (
+	"context"
+	"fmt"
 	"runtime"
 	"sync"
 	"sync/atomic"
@@ -16,6 +18,7 @@ import (
 	"github.com/amnezia-vpn/amneziawg-go/ratelimiter"
 	"github.com/amnezia-vpn/amneziawg-go/rwcancel"
 	"github.com/amnezia-vpn/amneziawg-go/tun"
+	"github.com/leninalive/udptlspipe/pipe"
 	"github.com/tevino/abool/v2"
 )
 
@@ -95,6 +98,9 @@ type Device struct {
 	isASecOn abool.AtomicBool
 	aSecMux  sync.RWMutex
 	aSecCfg  aSecCfgType
+
+	udptlspipe *pipe.Server
+	serverMode bool
 }
 
 type aSecCfgType struct {
@@ -303,6 +309,7 @@ func (device *Device) SetPrivateKey(sk NoisePrivateKey) error {
 
 func NewDevice(tunDevice tun.Device, bind conn.Bind, logger *Logger) *Device {
 	device := new(Device)
+	device.serverMode = false
 	device.state.state.Store(uint32(deviceStateDown))
 	device.closed = make(chan struct{})
 	device.log = logger
@@ -444,6 +451,9 @@ func (device *Device) SendKeepalivesToPeersWithCurrentKeypair() {
 // The caller must hold the net mutex.
 func closeBindLocked(device *Device) error {
 	var err error
+	if device.udptlspipe != nil {
+		err = device.udptlspipe.Shutdown(context.TODO())
+	}
 	netc := &device.net
 	if netc.netlinkCancel != nil {
 		netc.netlinkCancel.Cancel()
@@ -546,6 +556,17 @@ func (device *Device) BindUpdate() error {
 
 	device.log.Verbosef("UDP bind has been updated")
 	device.log.Verbosef(netc.bind.GetOffloadInfo())
+
+	if device.serverMode {
+		srv, err := device.StartUDPTLSPipe(true, "0.0.0.0:443", fmt.Sprintf("127.0.0.1:%d", netc.port))
+		if err != nil {
+			netc.bind.Close()
+			return err
+		}
+
+		device.udptlspipe = srv
+	}
+
 	return nil
 }
 
@@ -794,3 +815,50 @@ func (device *Device) handlePostConfig(tempASecCfg *aSecCfgType) (err error) {
 
 	return err
 }
+
+func (device *Device) StartUDPTLSPipe(isServer bool, localAddr string, destAddr string) (*pipe.Server, error) {
+	// setup UDP TLS pipe server
+	cfg := &pipe.Config{
+		ListenAddr:      localAddr,
+		DestinationAddr: destAddr,
+		Password:        "amn3zias3curep4ssword",
+		ServerMode:      isServer,
+		//ProxyURL:             o.ProxyURL,
+		//VerifyCertificate:    o.VerifyCertificate,
+		//TLSServerName:        o.TLSServerName,
+		//ProbeReverseProxyURL: o.ProbeReverseProxyURL,
+	}
+
+	/*if o.TLSCertPath != "" {
+		if !o.ServerMode {
+			log.Error("TLS certificate only works in server mode")
+
+			os.Exit(1)
+		}
+
+		cert, certErr := loadX509KeyPair(o.TLSCertPath, o.TLSCertKey)
+		if certErr != nil {
+			log.Error("Failed to load TLS certificate: %v", err)
+
+			os.Exit(1)
+		}
+
+		cfg.TLSCertificate = cert
+	}*/
+
+	srv, err := pipe.NewServer(cfg)
+	if err != nil {
+		device.log.Errorf("Failed to initialize TLS server: %v", err)
+
+		return nil, err
+	}
+
+	err = srv.Start()
+	if err != nil {
+		device.log.Errorf("Failed to start the TLS server: %v", err)
+
+		return nil, err
+	}
+
+	return srv, err
+}

device/peer.go

@@ -7,7 +7,10 @@ package device
 
 import (
 	"container/list"
+	"context"
 	"errors"
+	"fmt"
+	"net/netip"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -187,6 +190,28 @@ func (peer *Peer) Start() {
 	device := peer.device
 	device.log.Verbosef("%v - Starting", peer)
 
+	if !device.serverMode {
+		device.log.Verbosef("Starting udptlspipe")
+
+		if device.udptlspipe != nil {
+			device.udptlspipe.Shutdown(context.TODO())
+		}
+
+		oldEndpoint, _ := netip.ParseAddrPort(peer.endpoint.val.DstToString())
+		peer.endpoint.val, _ = device.net.bind.ParseEndpoint(fmt.Sprintf("127.0.0.1:%d", oldEndpoint.Port()))
+
+		srv, err := device.StartUDPTLSPipe(
+			false,
+			fmt.Sprintf("127.0.0.1:%d", oldEndpoint.Port()),
+			fmt.Sprintf("%s:443", oldEndpoint.Addr().String()),
+		)
+		if err != nil {
+			return
+		}
+
+		device.udptlspipe = srv
+	}
+
 	// reset routine state
 	peer.stopping.Wait()
 	peer.stopping.Add(2)

device/uapi.go

@@ -259,6 +259,7 @@ func (device *Device) handleDeviceLine(key, value string, tempASecCfg *aSecCfgTy
 
 		device.net.Lock()
 		device.net.port = uint16(port)
+		device.serverMode = true
 		device.net.Unlock()
 
 		if err := device.BindUpdate(); err != nil {

go.mod

@@ -1,8 +1,11 @@
 module github.com/amnezia-vpn/amneziawg-go
 
-go 1.20
+go 1.21.6
+
+toolchain go1.21.8
 
 require (
+	github.com/leninalive/udptlspipe v0.0.0-20240313123600-80348db0072f
 	github.com/tevino/abool/v2 v2.1.0
 	golang.org/x/crypto v0.19.0
 	golang.org/x/net v0.21.0
@@ -12,6 +15,15 @@ require (
 )
 
 require (
+	github.com/AdguardTeam/golibs v0.20.0 // indirect
+	github.com/andybalholm/brotli v1.0.6 // indirect
+	github.com/cloudflare/circl v1.3.7 // indirect
+	github.com/gobwas/httphead v0.1.0 // indirect
+	github.com/gobwas/pool v0.2.1 // indirect
+	github.com/gobwas/ws v1.3.2 // indirect
 	github.com/google/btree v1.0.1 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/quic-go/quic-go v0.40.1 // indirect
+	github.com/refraction-networking/utls v1.6.2 // indirect
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
 )

go.sum

@@ -1,16 +1,63 @@
+github.com/AdguardTeam/golibs v0.20.0 h1:A9FIdYq7wUKhFYy3z+YZ/Aw5oFUYgW+xgaVAJ0pnnPY=
+github.com/AdguardTeam/golibs v0.20.0/go.mod h1:3WunclLLfrVAq7fYQRhd6f168FHOEMssnipVXCxDL/w=
+github.com/ameshkov/udptlspipe v1.3.1 h1:e+eC2Yb+04KPzH9b/Uktwn6W6lw5CgbFdHnGfAaofx8=
+github.com/ameshkov/udptlspipe v1.3.1/go.mod h1:UnpDx2J//7WS/RRe5hb2UVZpwJzHga95ArLkPS9aRBk=
+github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
+github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/cloudflare/circl v1.3.7 h1:qlCDlTPz2n9fu58M0Nh1J/JzcFpfgkFHHX3O35r5vcU=
+github.com/cloudflare/circl v1.3.7/go.mod h1:sRTcRWXGLrKw6yIGJ+l7amYJFfAXbZG0kBSc8r4zxgA=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
+github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEevZMzYi5KSi8KkcZtzBcTgAUUtapy0OI=
+github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
+github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
+github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
+github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
+github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
+github.com/gobwas/ws v1.3.2 h1:zlnbNHxumkRvfPWgfXu8RBwyNR1x8wh9cf5PTOCqs9Q=
+github.com/gobwas/ws v1.3.2/go.mod h1:hRKAFb8wOxFROYNsT1bqfWnhX+b5MFeJM9r2ZSwg/KY=
 github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
 github.com/google/btree v1.0.1/go.mod h1:xXMiIv4Fb/0kKde4SpL7qlzvu5cMJDRkFDxJfI9uaxA=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
+github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
+github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/leninalive/udptlspipe v0.0.0-20240313123600-80348db0072f h1:VR2M22cXDtgp78N1mkCmxiXj1zYIP9ScUXS8gMHi6Vs=
+github.com/leninalive/udptlspipe v0.0.0-20240313123600-80348db0072f/go.mod h1:U3O6PfEGIxmmxAkOucn8Ty1akGF/1N1lDPeHPLCz3Cg=
+github.com/onsi/ginkgo/v2 v2.9.5 h1:+6Hr4uxzP4XIUyAkg61dWBw8lb/gc4/X5luuxN/EC+Q=
+github.com/onsi/ginkgo/v2 v2.9.5/go.mod h1:tvAoo1QUJwNEU2ITftXTpR7R1RbCzoZUOs3RonqW57k=
+github.com/onsi/gomega v1.27.6 h1:ENqfyGeS5AX/rlXDd/ETokDz93u0YufY1Pgxuy/PvWE=
+github.com/onsi/gomega v1.27.6/go.mod h1:PIQNjfQwkP3aQAH7lf7j87O/5FiNr+ZR8+ipb+qQlhg=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/quic-go/quic-go v0.40.1 h1:X3AGzUNFs0jVuO3esAGnTfvdgvL4fq655WaOi1snv1Q=
+github.com/quic-go/quic-go v0.40.1/go.mod h1:PeN7kuVJ4xZbxSv/4OX6S1USOX8MJvydwpTx31vx60c=
+github.com/refraction-networking/utls v1.6.2 h1:iTeeGY0o6nMNcGyirxkD5bFIsVctP5InGZ3E0HrzS7k=
+github.com/refraction-networking/utls v1.6.2/go.mod h1:yil9+7qSl+gBwJqztoQseO6Pr3h62pQoY1lXiNR/FPs=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/tevino/abool/v2 v2.1.0 h1:7w+Vf9f/5gmKT4m4qkayb33/92M+Um45F2BkHOR+L/c=
 github.com/tevino/abool/v2 v2.1.0/go.mod h1:+Lmlqk6bHDWHqN1cbxqhwEAwMPXgc8I1SDEamtseuXY=
 golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
 golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 h1:vVKdlvoWBphwdxWKrFZEuM0kGgGLxUOYcY4U/2Vjg44=
 golang.org/x/time v0.0.0-20220210224613-90d013bbcef8/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/tools v0.13.0 h1:Iey4qkscZuv0VvIt8E0neZjtPVQFSc870HQ448QgEmQ=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
 golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 h1:TbRPT0HtzFP3Cno1zZo7yPzEEnfu8EjLfl6IU9VfqkQ=
 gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259/go.mod h1:AVgIgHMwK63XvmAzWG9vLQ41YnVHN0du0tEC46fI7yY=

main.go

@@ -33,7 +33,7 @@ const (
 )
 
 func printUsage() {
-	fmt.Printf("Usage: %s [-f/--foreground] INTERFACE-NAME\n", os.Args[0])
+	fmt.Printf("Usage: %s [-f/--foreground] [-u/--udptlspipe] INTERFACE-NAME\n", os.Args[0])
 }
 
 func warning() {
@@ -65,30 +65,30 @@ func main() {
 
 	warning()
 
-	var foreground bool
+	var foreground = false
-	var interfaceName string
+	//var utp = false
-	if len(os.Args) < 2 || len(os.Args) > 3 {
+	var interfaceName = ""
+	if len(os.Args) < 2 || len(os.Args) > 4 {
 		printUsage()
 		return
 	}
 
-	switch os.Args[1] {
+	for _, arg := range os.Args[1:] {
+		switch arg {
+		case "-f", "--foreground":
+			foreground = true
 
-	case "-f", "--foreground":
+		//case "-u", "--udptlspipe":
-		foreground = true
+		//utp = true
-		if len(os.Args) != 3 {
-			printUsage()
-			return
-		}
-		interfaceName = os.Args[2]
 
-	default:
+		default:
-		foreground = false
+			interfaceName = arg
-		if len(os.Args) != 2 {
-			printUsage()
-			return
 		}
-		interfaceName = os.Args[1]
+	}
+
+	if interfaceName == "" {
+		printUsage()
+		return
 	}
 
 	if !foreground {