Move add peer loop into Core, refresh it from active config

cmd/yggdrasil/main.go

@@ -12,7 +12,6 @@ import (
 	"regexp"
 	"strings"
 	"syscall"
-	"time"
 
 	"golang.org/x/text/encoding/unicode"
 
@@ -243,27 +242,6 @@ func main() {
 	for _, pBoxStr := range cfg.AllowedEncryptionPublicKeys {
 		n.core.AddAllowedEncryptionPublicKey(pBoxStr)
 	}
-	// If any static peers were provided in the configuration above then we should
-	// configure them. The loop ensures that disconnected peers will eventually
-	// be reconnected with.
-	go func() {
-		if len(cfg.Peers) == 0 && len(cfg.InterfacePeers) == 0 {
-			return
-		}
-		for {
-			for _, peer := range cfg.Peers {
-				n.core.AddPeer(peer, "")
-				time.Sleep(time.Second)
-			}
-			for intf, intfpeers := range cfg.InterfacePeers {
-				for _, peer := range intfpeers {
-					n.core.AddPeer(peer, intf)
-					time.Sleep(time.Second)
-				}
-			}
-			time.Sleep(time.Minute)
-		}
-	}()
 	// The Stop function ensures that the TUN/TAP adapter is correctly shut down
 	// before the program exits.
 	defer func() {

src/yggdrasil/core.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"regexp"
 	"sync"
+	"time"
 
 	"github.com/yggdrasil-network/yggdrasil-go/src/address"
 	"github.com/yggdrasil-network/yggdrasil-go/src/config"
@@ -91,12 +92,37 @@ func (c *Core) init() error {
 	c.router.init(c)
 	c.switchTable.init(c) // TODO move before peers? before router?
 
-	if err := c.tcp.init(c); err != nil {
-		c.log.Println("Failed to start TCP interface")
-		return err
+	return nil
+}
+
+// If any static peers were provided in the configuration above then we should
+// configure them. The loop ensures that disconnected peers will eventually
+// be reconnected with.
+func (c *Core) addPeerLoop() {
+	for {
+		// Get the peers from the config - these could change!
+		c.configMutex.RLock()
+		peers := c.config.Peers
+		interfacepeers := c.config.InterfacePeers
+		c.configMutex.RUnlock()
+
+		// Add peers from the Peers section
+		for _, peer := range peers {
+			c.AddPeer(peer, "")
+			time.Sleep(time.Second)
 		}
 
-	return nil
+		// Add peers from the InterfacePeers section
+		for intf, intfpeers := range interfacepeers {
+			for _, peer := range intfpeers {
+				c.AddPeer(peer, intf)
+				time.Sleep(time.Second)
+			}
+		}
+
+		// Sit for a while
+		time.Sleep(time.Minute)
+	}
 }
 
 // UpdateConfig updates the configuration in Core and then signals the
@@ -245,6 +271,8 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 		return err
 	}
 
+	go c.addPeerLoop()
+
 	c.log.Println("Startup complete")
 	return nil
 }