Add "IfTAPMode" configuration option to allow selecting TAP mode on supported platforms

src/yggdrasil/debug.go

@@ -205,14 +205,14 @@ func (c *Core) DEBUG_getAddr() *address {
 	return address_addrForNodeID(&c.dht.nodeID)
 }
 
-func (c *Core) DEBUG_startTun(ifname string) {
+func (c *Core) DEBUG_startTun(ifname string, iftapmode bool) {
-	c.DEBUG_startTunWithMTU(ifname, 1280)
+	c.DEBUG_startTunWithMTU(ifname, iftapmode, 1280)
 }
 
-func (c *Core) DEBUG_startTunWithMTU(ifname string, mtu int) {
+func (c *Core) DEBUG_startTunWithMTU(ifname string, iftapmode bool, mtu int) {
 	addr := c.DEBUG_getAddr()
 	straddr := fmt.Sprintf("%s/%v", net.IP(addr[:]).String(), 8*len(address_prefix))
-	err := c.tun.setup(ifname, straddr, mtu)
+	err := c.tun.setup(ifname, iftapmode, straddr, mtu)
 	if err != nil {
 		panic(err)
 	}

src/yggdrasil/tun_darwin.go

@@ -10,7 +10,10 @@ import "golang.org/x/sys/unix"
 
 import water "github.com/songgao/water"
 
-func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
+func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
+	if iftapmode {
+		tun.core.log.Printf("TAP mode is not supported on this platform, defaulting to TUN")
+	}
 	config := water.Config{DeviceType: water.TUN}
 	iface, err := water.New(config)
 	if err != nil {

src/yggdrasil/tun_linux.go

@@ -9,8 +9,13 @@ import "strings"
 
 import water "github.com/songgao/water"
 
-func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
+func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
-	config := water.Config{DeviceType: water.TUN}
+	var config water.Config
+	if iftapmode {
+		config = water.Config{DeviceType: water.TAP}
+	} else {
+		config = water.Config{DeviceType: water.TUN}
+	}
 	if ifname != "" && ifname != "auto" {
 		config.Name = ifname
 	}

src/yggdrasil/tun_other.go

@@ -9,8 +9,13 @@ import water "github.com/songgao/water"
 // This is to catch unsupported platforms
 // If your platform supports tun devices, you could try configuring it manually
 
-func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
+func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
-	config := water.Config{DeviceType: water.TUN}
+	var config water.Config
+	if iftapmode {
+		config = water.Config{DeviceType: water.TAP}
+	} else {
+		config = water.Config{DeviceType: water.TUN}
+	}
 	iface, err := water.New(config)
 	if err != nil {
 		panic(err)

src/yggdrasil/tun_windows.go

@@ -7,7 +7,10 @@ import "fmt"
 
 // This is to catch Windows platforms
 
-func (tun *tunDevice) setup(ifname string, addr string, mtu int) error {
+func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
+	if !iftapmode {
+		tun.core.log.Printf("TUN mode is not supported on this platform, defaulting to TAP")
+	}
 	config := water.Config{DeviceType: water.TAP}
 	config.PlatformSpecificParams.ComponentID = "tap0901"
 	config.PlatformSpecificParams.Network = "169.254.0.1/32"

yggdrasil.go

@@ -39,6 +39,7 @@ type nodeConfig struct {
 	Multicast   bool
 	LinkLocal   string
 	IfName      string
+	IfTAPMode   bool
 }
 
 type node struct {
@@ -104,7 +105,7 @@ func generateConfig() *nodeConfig {
 	spub, spriv := core.DEBUG_newSigKeys()
 	cfg := nodeConfig{}
 	cfg.Listen = "[::]:0"
-	cfg.AdminListen = "localhost:9001"
+	cfg.AdminListen = "[::1]:9001"
 	cfg.BoxPub = hex.EncodeToString(bpub[:])
 	cfg.BoxPriv = hex.EncodeToString(bpriv[:])
 	cfg.SigPub = hex.EncodeToString(spub[:])
@@ -113,6 +114,11 @@ func generateConfig() *nodeConfig {
 	cfg.Multicast = true
 	cfg.LinkLocal = ""
 	cfg.IfName = "auto"
+	if runtime.GOOS == "windows" {
+		cfg.IfTAPMode = true
+	} else {
+		cfg.IfTAPMode = false
+	}
 	return &cfg
 }
 
@@ -258,7 +264,7 @@ func main() {
 	n.init(cfg, logger)
 	logger.Println("Starting tun...")
 	//n.core.DEBUG_startTun(cfg.IfName) // 1280, the smallest supported MTU
-	n.core.DEBUG_startTunWithMTU(cfg.IfName, 65535) // Largest supported MTU
+	n.core.DEBUG_startTunWithMTU(cfg.IfName, cfg.IfTAPMode, 65535) // Largest supported MTU
 	defer func() {
 		logger.Println("Closing...")
 		n.core.DEBUG_stopTun()