main.go

@@ -50,6 +50,7 @@ const routingTableTemplate = `
 	<thead><tr>
 		<th>Network range</th>
 		<th>Extended?</th>
+		<th>Zone names</th>
 		<th>Distance</th>
 		<th>Last seen</th>
 		<th>Port</th>
@@ -58,7 +59,8 @@ const routingTableTemplate = `
 {{range $route := . }}
 	<tr>
 		<td>{{$route.NetStart}}{{if not (eq $route.NetStart $route.NetEnd)}} - {{$route.NetEnd}}{{end}}</td>
-		<td>{{if $route.Extended}}✅{{else}}❌{{end}}</td>
+		<td>{{if $route.Extended}}✅{{else}}-{{end}}</td>
+		<td>{{range $route.ZoneNames}}{{.}}<br>{{end}}</td>
 		<td>{{$route.Distance}}</td>
 		<td>{{$route.LastSeenAgo}}</td>
 		<td>
@@ -220,14 +222,14 @@ func main() {
 		return rs, nil
 	})
 
-	zones := router.NewZoneTable()
+	// zones := router.NewZoneTable()
-	status.AddItem(ctx, "Zone table", zoneTableTemplate, func(context.Context) (any, error) {
+	// status.AddItem(ctx, "Zone table", zoneTableTemplate, func(context.Context) (any, error) {
-		zs := zones.Dump()
+	// 	zs := zones.Dump()
-		slices.SortFunc(zs, func(za, zb router.Zone) int {
+	// 	slices.SortFunc(zs, func(za, zb router.Zone) int {
-			return cmp.Compare(za.Name, zb.Name)
+	// 		return cmp.Compare(za.Name, zb.Name)
-		})
+	// 	})
-		return zs, nil
+	// 	return zs, nil
-	})
+	// })
 
 	// -------------------------------- Peers ---------------------------------
 	var peersMu sync.Mutex
@@ -326,8 +328,7 @@ func main() {
 			ConfiguredAddr: peerStr,
 			RemoteAddr:     raddr,
 			ReceiveCh:      make(chan aurp.Packet, 1024),
-			RoutingTable:   routes,
+			RouteTable:     routes,
-			ZoneTable:      zones,
 		}
 		aurp.Inc(&nextConnID)
 		peersMu.Lock()
@@ -344,7 +345,7 @@ func main() {
 	rooter := &router.Router{
 		Config:     cfg,
 		RouteTable: routes,
-		ZoneTable:  zones,
+		// ZoneTable:  zones,
 	}
 
 	etherTalkPort := &router.EtherTalkPort{
@@ -360,9 +361,6 @@ func main() {
 	}
 	rooter.Ports = append(rooter.Ports, etherTalkPort)
 	routes.InsertEtherTalkDirect(etherTalkPort)
-	for _, az := range etherTalkPort.AvailableZones {
-		zones.Upsert(etherTalkPort.NetStart, az, etherTalkPort)
-	}
 
 	// --------------------------------- RTMP ---------------------------------
 	go etherTalkPort.RunRTMP(ctx)
@@ -437,8 +435,7 @@ func main() {
 					UDPConn:    ln,
 					RemoteAddr: raddr,
 					ReceiveCh:  make(chan aurp.Packet, 1024),
-					RoutingTable: routes,
+					RouteTable: routes,
-					ZoneTable:    zones,
 				}
 				aurp.Inc(&nextConnID)
 				peers[ra] = pr

router/nbp.go

@@ -74,10 +74,10 @@ func (port *EtherTalkPort) handleNBPBrRq(ctx context.Context, ddpkt *ddp.ExtPack
 	// 	tuple.Zone = port.DefaultZoneName
 	// }
 
-	zones := port.Router.ZoneTable.LookupName(tuple.Zone)
+	routes := port.Router.RouteTable.RoutesForZone(tuple.Zone)
 
-	for _, z := range zones {
+	for _, route := range routes {
-		if outPort := z.LocalPort; outPort != nil {
+		if outPort := route.EtherTalkDirect; outPort != nil {
 			// If it's for a local zone, translate it to a LkUp and broadcast
 			// out the corresponding EtherTalk port.
 			// "Note: On an internet, nodes on extended networks performing lookups in
@@ -147,7 +147,7 @@ func (port *EtherTalkPort) handleNBPBrRq(ctx context.Context, ddpkt *ddp.ExtPack
 				SrcNet:    ddpkt.SrcNet,
 				SrcNode:   ddpkt.SrcNode,
 				SrcSocket: ddpkt.SrcSocket,
-				DstNet:    z.Network,
+				DstNet:    route.NetStart,
 				DstNode:   0x00, // Any router for the dest network
 				DstSocket: 2,
 				Proto:     ddp.ProtoNBP,

router/peer_aurp.go

@@ -114,11 +114,8 @@ type AURPPeer struct {
 	// Incoming packet channel.
 	ReceiveCh chan aurp.Packet
 
-	// Routing table (the peer will add/remove/update routes)
+	// Route table (the peer will add/remove/update routes and zones)
-	RoutingTable *RouteTable
+	RouteTable *RouteTable
-
-	// Zone table (the peer will add/remove/update zones)
-	ZoneTable *ZoneTable
 
 	mu     sync.RWMutex
 	rstate ReceiverState
@@ -253,7 +250,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 				if sendRetries >= tickleRetryLimit {
 					log.Printf("AURP Peer: Send retry limit reached while waiting for Tickle-Ack, closing connection")
 					p.setRState(ReceiverUnconnected)
-					p.RoutingTable.DeleteAURPPeer(p)
+					p.RouteTable.DeleteAURPPeer(p)
 					break
 				}
 
@@ -272,7 +269,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 				if sendRetries >= sendRetryLimit {
 					log.Printf("AURP Peer: Send retry limit reached while waiting for RI-Rsp, closing connection")
 					p.setRState(ReceiverUnconnected)
-					p.RoutingTable.DeleteAURPPeer(p)
+					p.RouteTable.DeleteAURPPeer(p)
 					break
 				}
 
@@ -467,7 +464,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 				log.Printf("AURP Peer: Learned about these networks: %v", pkt.Networks)
 
 				for _, nt := range pkt.Networks {
-					p.RoutingTable.InsertAURPRoute(
+					p.RouteTable.InsertAURPRoute(
 						p,
 						nt.Extended,
 						ddp.Network(nt.RangeStart),
@@ -543,7 +540,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 						// Do nothing except respond with RI-Ack
 
 					case aurp.EventCodeNA:
-						if err := p.RoutingTable.InsertAURPRoute(
+						if err := p.RouteTable.InsertAURPRoute(
 							p,
 							et.Extended,
 							et.RangeStart,
@@ -555,10 +552,10 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 						ackFlag = aurp.RoutingFlagSendZoneInfo
 
 					case aurp.EventCodeND:
-						p.RoutingTable.DeleteAURPPeerNetwork(p, et.RangeStart)
+						p.RouteTable.DeleteAURPPeerNetwork(p, et.RangeStart)
 
 					case aurp.EventCodeNDC:
-						p.RoutingTable.UpdateAURPRouteDistance(p, et.RangeStart, et.Distance+1)
+						p.RouteTable.UpdateAURPRouteDistance(p, et.RangeStart, et.Distance+1)
 
 					case aurp.EventCodeNRC:
 						// "An exterior router sends a Network Route Change
@@ -566,7 +563,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 						// through its local internet changes to a path through
 						// a tunneling port, causing split-horizoned processing
 						// to eliminate that network’s routing information."
-						p.RoutingTable.DeleteAURPPeerNetwork(p, et.RangeStart)
+						p.RouteTable.DeleteAURPPeerNetwork(p, et.RangeStart)
 
 					case aurp.EventCodeZC:
 						// "This event is reserved for future use."
@@ -584,7 +581,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 				}
 
 				log.Printf("AURP Peer: Router Down: error code %d %s", pkt.ErrorCode, pkt.ErrorCode)
-				p.RoutingTable.DeleteAURPPeer(p)
+				p.RouteTable.DeleteAURPPeer(p)
 
 				// Respond with RI-Ack
 				if _, err := p.Send(p.Transport.NewRIAckPacket(pkt.ConnectionID, pkt.Sequence, 0)); err != nil {
@@ -596,7 +593,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 
 			case *aurp.ZIReqPacket:
 				// TODO: split ZI-Rsp packets similarly to ZIP Replies
-				zones := p.ZoneTable.Query(pkt.Networks)
+				zones := p.RouteTable.ZonesForNetworks(pkt.Networks)
 				if _, err := p.Send(p.Transport.NewZIRspPacket(zones)); err != nil {
 					log.Printf("AURP Peer: Couldn't send ZI-Rsp packet: %v", err)
 					return err
@@ -605,7 +602,7 @@ func (p *AURPPeer) Handle(ctx context.Context) error {
 			case *aurp.ZIRspPacket:
 				log.Printf("AURP Peer: Learned about these zones: %v", pkt.Zones)
 				for _, zt := range pkt.Zones {
-					p.ZoneTable.Upsert(ddp.Network(zt.Network), zt.Name, nil)
+					p.RouteTable.AddZoneToNetwork(zt.Network, zt.Name)
 				}
 
 			case *aurp.GDZLReqPacket:

router/route.go

@@ -34,6 +34,10 @@ type Route struct {
 
 	LastSeen time.Time
 
+	// ZoneNames may be empty between learning the existence of a route and
+	// receiving zone information.
+	ZoneNames []string
+
 	// Exactly one of the following should be set
 	AURPPeer        *AURPPeer      // Next hop is this peer router (over AURP)
 	EtherTalkPeer   *EtherTalkPeer // Next hop is this peer router (over EtherTalk)
@@ -47,6 +51,10 @@ func (r Route) LastSeenAgo() string {
 	return fmt.Sprintf("%v ago", time.Since(r.LastSeen).Truncate(time.Millisecond))
 }
 
+func (r *Route) Valid() bool {
+	return r.EtherTalkPeer == nil || time.Since(r.LastSeen) <= maxRouteAge
+}
+
 type RouteTable struct {
 	mu     sync.Mutex
 	routes map[*Route]struct{}
@@ -65,6 +73,7 @@ func (rt *RouteTable) InsertEtherTalkDirect(port *EtherTalkPort) {
 		NetEnd:          port.NetEnd,
 		Distance:        0, // we're connected directly
 		LastSeen:        time.Now(),
+		ZoneNames:       port.AvailableZones,
 		EtherTalkDirect: port,
 	}
 
@@ -93,8 +102,7 @@ func (rt *RouteTable) LookupRoute(network ddp.Network) *Route {
 		if network < r.NetStart || network > r.NetEnd {
 			continue
 		}
-		// Exclude EtherTalk routes that are too old
+		if !r.Valid() {
-		if r.EtherTalkPeer != nil && time.Since(r.LastSeen) > maxRouteAge {
 			continue
 		}
 		if bestRoute == nil {
@@ -213,11 +221,9 @@ func (rt *RouteTable) ValidRoutes() []*Route {
 	defer rt.mu.Unlock()
 	valid := make([]*Route, 0, len(rt.routes))
 	for r := range rt.routes {
-		// Exclude EtherTalk routes that are too old
+		if r.Valid() {
-		if r.EtherTalkPeer != nil && time.Since(r.LastSeen) > maxRouteAge {
-			continue
-		}
 			valid = append(valid, r)
 		}
+	}
 	return valid
 }

router/router.go

@@ -26,7 +26,6 @@ import (
 type Router struct {
 	Config     *Config
 	RouteTable *RouteTable
-	ZoneTable  *ZoneTable
 	Ports      []*EtherTalkPort
 }
 

router/zip.go

@@ -62,7 +62,7 @@ func (port *EtherTalkPort) handleZIPZIP(ctx context.Context, ddpkt *ddp.ExtPacke
 
 func (port *EtherTalkPort) handleZIPQuery(ctx context.Context, ddpkt *ddp.ExtPacket, zipkt *zip.QueryPacket) error {
 	log.Printf("ZIP: Got Query for networks %v", zipkt.Networks)
-	networks := port.Router.ZoneTable.Query(zipkt.Networks)
+	networks := port.Router.RouteTable.ZonesForNetworks(zipkt.Networks)
 
 	sendReply := func(resp *zip.ReplyPacket) error {
 		respRaw, err := resp.Marshal()
@@ -258,7 +258,7 @@ func (port *EtherTalkPort) handleZIPTReq(ctx context.Context, ddpkt *ddp.ExtPack
 
 	switch gzl.Function {
 	case zip.FunctionGetZoneList:
-		resp.Zones = port.Router.ZoneTable.AllNames()
+		resp.Zones = port.Router.RouteTable.AllZoneNames()
 
 	case zip.FunctionGetLocalZones:
 		resp.Zones = port.AvailableZones

router/zones.go

@@ -17,145 +17,79 @@
 package router
 
 import (
-	"fmt"
 	"slices"
-	"sort"
-	"sync"
-	"time"
 
 	"github.com/sfiera/multitalk/pkg/ddp"
 )
 
-//const maxZoneAge = 10 * time.Minute // TODO: confirm
+func (rt *RouteTable) AddZoneToNetwork(n ddp.Network, z string) {
-
+	rt.mu.Lock()
-type Zone struct {
+	defer rt.mu.Unlock()
-	Network   ddp.Network
+	for r := range rt.routes {
-	Name      string
+		if n < r.NetStart || n > r.NetEnd {
-	LocalPort *EtherTalkPort // nil if remote (local to another router)
-	LastSeen  time.Time
-}
-
-func (z Zone) LastSeenAgo() string {
-	if z.LastSeen.IsZero() {
-		return "never"
-	}
-	return fmt.Sprintf("%v ago", time.Since(z.LastSeen).Truncate(time.Millisecond))
-}
-
-type zoneKey struct {
-	network ddp.Network
-	name    string
-}
-
-type ZoneTable struct {
-	mu    sync.Mutex
-	zones map[zoneKey]*Zone
-}
-
-func NewZoneTable() *ZoneTable {
-	return &ZoneTable{
-		zones: make(map[zoneKey]*Zone),
-	}
-}
-
-func (zt *ZoneTable) Dump() []Zone {
-	zt.mu.Lock()
-	defer zt.mu.Unlock()
-	zs := make([]Zone, 0, len(zt.zones))
-	for _, z := range zt.zones {
-		zs = append(zs, *z)
-	}
-	return zs
-}
-
-func (zt *ZoneTable) Upsert(network ddp.Network, name string, localPort *EtherTalkPort) {
-	zt.mu.Lock()
-	defer zt.mu.Unlock()
-	key := zoneKey{network, name}
-	z := zt.zones[key]
-	if z != nil {
-		z.LocalPort = localPort
-		z.LastSeen = time.Now()
-		return
-	}
-	zt.zones[key] = &Zone{
-		Network:   network,
-		Name:      name,
-		LocalPort: localPort,
-		LastSeen:  time.Now(),
-	}
-}
-
-func (zt *ZoneTable) Query(ns []ddp.Network) map[ddp.Network][]string {
-	slices.Sort(ns)
-	zs := make(map[ddp.Network][]string)
-
-	zt.mu.Lock()
-	defer zt.mu.Unlock()
-	for _, z := range zt.zones {
-		// if time.Since(z.LastSeen) > maxZoneAge {
-		// 	continue
-		// }
-		if _, ok := slices.BinarySearch(ns, z.Network); ok {
-			zs[z.Network] = append(zs[z.Network], z.Name)
-		}
-	}
-	return zs
-}
-
-func (zt *ZoneTable) LookupName(name string) []*Zone {
-	zt.mu.Lock()
-	defer zt.mu.Unlock()
-
-	var zs []*Zone
-	for _, z := range zt.zones {
-		if z.Name == name {
-			zs = append(zs, z)
-		}
-	}
-	return zs
-}
-
-// func (zt *ZoneTable) LocalNames() []string {
-// 	zt.mu.Lock()
-// 	seen := make(map[string]struct{})
-// 	zs := make([]string, 0, len(zt.zones))
-// 	for _, z := range zt.zones {
-// 		// if time.Since(z.LastSeen) > maxZoneAge {
-// 		// 	continue
-// 		// }
-// 		if z.Local != nil {
-// 			continue
-// 		}
-// 		if _, s := seen[z.Name]; s {
-// 			continue
-// 		}
-// 		seen[z.Name] = struct{}{}
-// 		zs = append(zs, z.Name)
-
-// 	}
-// 	zt.mu.Unlock()
-
-// 	sort.Strings(zs)
-// 	return zs
-// }
-
-func (zt *ZoneTable) AllNames() []string {
-	zt.mu.Lock()
-	seen := make(map[string]struct{})
-	zs := make([]string, 0, len(zt.zones))
-	for _, z := range zt.zones {
-		// if time.Since(z.LastSeen) > maxZoneAge {
-		// 	continue
-		// }
-		if _, s := seen[z.Name]; s {
 			continue
 		}
-		seen[z.Name] = struct{}{}
+		if !r.Valid() {
-		zs = append(zs, z.Name)
+			continue
+		}
+		if slices.Contains(r.ZoneNames, z) {
+			continue
+		}
+		r.ZoneNames = append(r.ZoneNames, z)
+	}
 }
-	zt.mu.Unlock()
 
-	sort.Strings(zs)
+func (rt *RouteTable) ZonesForNetworks(ns []ddp.Network) map[ddp.Network][]string {
+	zs := make(map[ddp.Network][]string)
+
+	rt.mu.Lock()
+	defer rt.mu.Unlock()
+	for r := range rt.routes {
+		if !r.Valid() {
+			continue
+		}
+		if _, ok := slices.BinarySearch(ns, r.NetStart); ok {
+			zs[r.NetStart] = append(zs[r.NetStart], r.ZoneNames...)
+		}
+	}
 	return zs
 }
+
+func (rt *RouteTable) RoutesForZone(zone string) []*Route {
+	rt.mu.Lock()
+	defer rt.mu.Unlock()
+
+	var routes []*Route
+	for r := range rt.routes {
+		if !r.Valid() {
+			continue
+		}
+		if slices.Contains(r.ZoneNames, zone) {
+			routes = append(routes, r)
+		}
+	}
+	return routes
+}
+
+func (rt *RouteTable) AllZoneNames() (zones []string) {
+	defer slices.Sort(zones)
+
+	rt.mu.Lock()
+	defer rt.mu.Unlock()
+
+	seen := make(map[string]struct{})
+	for r := range rt.routes {
+		if !r.Valid() {
+			continue
+		}
+		for _, z := range r.ZoneNames {
+			if _, s := seen[z]; s {
+				continue
+			}
+			seen[z] = struct{}{}
+			zones = append(zones, z)
+		}
+	}
+
+	return zones
+}