Move TCP under link.go

src/yggdrasil/admin.go

@@ -577,9 +577,9 @@ func (a *admin) addPeer(addr string, sintf string) error {
 	if err == nil {
 		switch strings.ToLower(u.Scheme) {
 		case "tcp":
-			a.core.tcp.connect(u.Host, sintf)
+			a.core.link.tcp.connect(u.Host, sintf)
 		case "socks":
-			a.core.tcp.connectSOCKS(u.Host, u.Path[1:])
+			a.core.link.tcp.connectSOCKS(u.Host, u.Path[1:])
 		default:
 			return errors.New("invalid peer: " + addr)
 		}

src/yggdrasil/core.go

@@ -44,7 +44,6 @@ type Core struct {
 	admin       admin
 	searches    searches
 	multicast   multicast
-	tcp         tcpInterface
 	link        link
 	log         *log.Logger
 }
@@ -144,7 +143,7 @@ func (c *Core) UpdateConfig(config *config.NodeConfig) {
 		c.router.tun.reconfigure,
 		c.router.cryptokey.reconfigure,
 		c.switchTable.reconfigure,
-		c.tcp.reconfigure,
+		//	c.link.reconfigure,
 		c.multicast.reconfigure,
 	}
 
@@ -205,11 +204,6 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 
 	c.init()
 
-	if err := c.tcp.init(c); err != nil {
-		c.log.Errorln("Failed to start TCP interface")
-		return err
-	}
-
 	if err := c.link.init(c); err != nil {
 		c.log.Errorln("Failed to start link interfaces")
 		return err

src/yggdrasil/link.go

@@ -8,6 +8,7 @@ import (
 	"net"
 	"strings"
 	"sync"
+
 	//"sync/atomic"
 	"time"
 
@@ -20,7 +21,8 @@ type link struct {
 	core       *Core
 	mutex      sync.RWMutex // protects interfaces below
 	interfaces map[linkInfo]*linkInterface
-	awdl       awdl // AWDL interface support
+	awdl       awdl         // AWDL interface support
+	tcp        tcpInterface // TCP interface support
 	// TODO timeout (to remove from switch), read from config.ReadTimeout
 }
 
@@ -58,6 +60,11 @@ func (l *link) init(c *Core) error {
 	l.interfaces = make(map[linkInfo]*linkInterface)
 	l.mutex.Unlock()
 
+	if err := l.tcp.init(l); err != nil {
+		c.log.Errorln("Failed to start TCP interface")
+		return err
+	}
+
 	if err := l.awdl.init(l); err != nil {
 		l.core.log.Errorln("Failed to start AWDL interface")
 		return err

src/yggdrasil/multicast.go

@@ -27,7 +27,7 @@ func (m *multicast) init(core *Core) {
 		for {
 			e := <-m.reconfigure
 			m.myAddrMutex.Lock()
-			m.myAddr = m.core.tcp.getAddr()
+			m.myAddr = m.core.link.tcp.getAddr()
 			m.myAddrMutex.Unlock()
 			e <- nil
 		}
@@ -109,7 +109,7 @@ func (m *multicast) interfaces() []net.Interface {
 func (m *multicast) announce() {
 	var anAddr net.TCPAddr
 	m.myAddrMutex.Lock()
-	m.myAddr = m.core.tcp.getAddr()
+	m.myAddr = m.core.link.tcp.getAddr()
 	m.myAddrMutex.Unlock()
 	groupAddr, err := net.ResolveUDPAddr("udp6", m.groupAddr)
 	if err != nil {
@@ -183,6 +183,6 @@ func (m *multicast) listen() {
 		}
 		addr.Zone = from.Zone
 		saddr := addr.String()
-		m.core.tcp.connect(saddr, addr.Zone)
+		m.core.link.tcp.connect(saddr, addr.Zone)
 	}
 }

src/yggdrasil/tcp.go

@@ -32,7 +32,7 @@ const tcp_ping_interval = (default_timeout * 2 / 3)
 
 // The TCP listener and information about active TCP connections, to avoid duplication.
 type tcpInterface struct {
-	core        *Core
+	link        *link
 	reconfigure chan chan error
 	serv        net.Listener
 	stop        chan bool
@@ -77,16 +77,16 @@ func (iface *tcpInterface) connectSOCKS(socksaddr, peeraddr string) {
 }
 
 // Initializes the struct.
-func (iface *tcpInterface) init(core *Core) (err error) {
+func (iface *tcpInterface) init(l *link) (err error) {
-	iface.core = core
+	iface.link = l
 	iface.stop = make(chan bool, 1)
 	iface.reconfigure = make(chan chan error, 1)
 	go func() {
 		for {
 			e := <-iface.reconfigure
-			iface.core.configMutex.RLock()
+			iface.link.core.configMutex.RLock()
-			updated := iface.core.config.Listen != iface.core.configOld.Listen
+			updated := iface.link.core.config.Listen != iface.link.core.configOld.Listen
-			iface.core.configMutex.RUnlock()
+			iface.link.core.configMutex.RUnlock()
 			if updated {
 				iface.stop <- true
 				iface.serv.Close()
@@ -103,9 +103,9 @@ func (iface *tcpInterface) init(core *Core) (err error) {
 func (iface *tcpInterface) listen() error {
 	var err error
 
-	iface.core.configMutex.RLock()
+	iface.link.core.configMutex.RLock()
-	iface.addr = iface.core.config.Listen
+	iface.addr = iface.link.core.config.Listen
-	iface.core.configMutex.RUnlock()
+	iface.link.core.configMutex.RUnlock()
 
 	ctx := context.Background()
 	lc := net.ListenConfig{
@@ -127,16 +127,16 @@ func (iface *tcpInterface) listen() error {
 // Runs the listener, which spawns off goroutines for incoming connections.
 func (iface *tcpInterface) listener() {
 	defer iface.serv.Close()
-	iface.core.log.Infoln("Listening for TCP on:", iface.serv.Addr().String())
+	iface.link.core.log.Infoln("Listening for TCP on:", iface.serv.Addr().String())
 	for {
 		sock, err := iface.serv.Accept()
 		if err != nil {
-			iface.core.log.Errorln("Failed to accept connection:", err)
+			iface.link.core.log.Errorln("Failed to accept connection:", err)
 			return
 		}
 		select {
 		case <-iface.stop:
-			iface.core.log.Errorln("Stopping listener")
+			iface.link.core.log.Errorln("Stopping listener")
 			return
 		default:
 			if err != nil {
@@ -280,12 +280,12 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
 	remote, _, _ := net.SplitHostPort(sock.RemoteAddr().String())
 	remotelinklocal := net.ParseIP(remote).IsLinkLocalUnicast()
 	name := "tcp://" + sock.RemoteAddr().String()
-	link, err := iface.core.link.create(&stream, name, "tcp", local, remote, incoming, remotelinklocal)
+	link, err := iface.link.core.link.create(&stream, name, "tcp", local, remote, incoming, remotelinklocal)
 	if err != nil {
-		iface.core.log.Println(err)
+		iface.link.core.log.Println(err)
 		panic(err)
 	}
-	iface.core.log.Debugln("DEBUG: starting handler for", name)
+	iface.link.core.log.Debugln("DEBUG: starting handler for", name)
 	err = link.handler()
-	iface.core.log.Debugln("DEBUG: stopped handler for", name, err)
+	iface.link.core.log.Debugln("DEBUG: stopped handler for", name, err)
 }