Reconnect when RIS Live ends or stalls the stream (closes #53)

Only Stop now ends the reconnect loop. A stream that ends any other way,
with or without an error, marks the feed disconnected and reconnects with
the existing backoff. Before, a response RIS Live ended normally stopped
the loop for good while the health check kept reporting ok.

The streamer also drops the connection when no line arrives for 60
seconds; each line starts that limit over, and it also bounds the wait
for RIS Live to answer. The idle limit and the first backoff delay are
fields so the tests, against a local server, run in well under a second.
The README's Reconnection note describes this behaviour.

Model: opus-5-5

README.md

@@ -147,9 +147,8 @@ routewatch/
   more than 30s. A stream with no line for 60s is dropped and reconnected.
 - **IP Lookup**: the most specific live route is found by looking up the
   address's prefix at each mask length, longest first, in the prefix index
-  (at most 25 lookups for IPv4, 113 for IPv6); prefixes are stored in the
-  text form Go's `net/netip` prints. Routes shorter than /8 for IPv4 or /16
-  for IPv6, such as a default route, are not used.
+  (at most 33 lookups for IPv4, 129 for IPv6); prefixes are stored in the
+  text form Go's `net/netip` prints
 
 ### Database Schema
 

internal/database/counts_test.go

@@ -128,7 +128,7 @@ func TestLiveCountsTrackWritesInRealtime(t *testing.T) {
 
 	// A withdrawal removes one route.
 	if err := db.DeleteLiveRouteBatch([]LiveRouteDeletion{
-		{Prefix: "203.0.113.0/24", PeerIP: "192.0.2.1", IPVersion: ipVersionV4},
+		{Prefix: "203.0.113.0/24", OriginASN: 64501, PeerIP: "192.0.2.1", IPVersion: ipVersionV4},
 	}); err != nil {
 		t.Fatalf("DeleteLiveRouteBatch: %v", err)
 	}
@@ -327,11 +327,13 @@ func announceRoutes(db *Database, batch bool, routes []*LiveRoute) error {
 }
 
 // withdrawRoutes removes routes in one DeleteLiveRouteBatch, or with one
-// DeleteLiveRoute each.
+// DeleteLiveRoute each. It names each route by prefix and peer only, with no
+// origin ASN, as a withdrawal from the feed does when its message carries no AS
+// path.
 func withdrawRoutes(db *Database, batch bool, routes []*LiveRoute) error {
 	if !batch {
 		for _, route := range routes {
-			if err := db.DeleteLiveRoute(route.Prefix, route.PeerIP); err != nil {
+			if err := db.DeleteLiveRoute(route.Prefix, 0, route.PeerIP); err != nil {
 				return err
 			}
 		}

internal/database/database.go

@@ -37,14 +37,6 @@ const (
 	ipv6Bits       = 128
 )
 
-// The IP lookup does not use routes shorter than these mask lengths. A default
-// route or a route this short only says where a peer sends traffic it has no
-// better route for; it does not say who holds the address.
-const (
-	minLookupMaskLengthV4 = 8
-	minLookupMaskLengthV6 = 16
-)
-
 // SQLite memory tuning. cache_size and busy_timeout go in the DSN so every
 // pooled connection gets them; the heap limits are process-wide and set once.
 const (
@@ -228,22 +220,21 @@ func (d *Database) beginTx() (*loggingTx, error) {
 }
 
 // A live-route upsert is an UPDATE followed, only when no row matched, by an
-// INSERT. A live route is keyed by prefix and peer, so an announcement replaces
-// the peer's route for the prefix whatever its origin AS. The UPDATE's
-// rows-affected count (1 for an existing key, 0 for a new one) is what lets the
-// in-memory route counters stay exact without a COUNT(*). Callers hold the
-// database write lock, so no other writer can insert the same key between the
-// two statements. The id column is set only on INSERT, so an updated route
-// keeps its original id, exactly as the previous ON CONFLICT upsert did.
+// INSERT. The UPDATE's rows-affected count (1 for an existing key, 0 for a new
+// one) is what lets the in-memory route counters stay exact without a COUNT(*).
+// Callers hold the database write lock, so no other writer can insert the same
+// key between the two statements. The id column is set only on INSERT, so an
+// updated route keeps its original id, exactly as the previous ON CONFLICT
+// upsert did.
 const (
-	updateLiveRouteV4SQL = `UPDATE live_routes_v4 SET mask_length = ?, origin_asn = ?, as_path = ?,
-		next_hop = ?, last_updated = ? WHERE prefix = ? AND peer_ip = ?`
+	updateLiveRouteV4SQL = `UPDATE live_routes_v4 SET mask_length = ?, as_path = ?, next_hop = ?,
+		last_updated = ? WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`
 
 	insertLiveRouteV4SQL = `INSERT INTO live_routes_v4 (id, prefix, mask_length, origin_asn, peer_ip,
 		as_path, next_hop, last_updated) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`
 
-	updateLiveRouteV6SQL = `UPDATE live_routes_v6 SET mask_length = ?, origin_asn = ?, as_path = ?,
-		next_hop = ?, last_updated = ? WHERE prefix = ? AND peer_ip = ?`
+	updateLiveRouteV6SQL = `UPDATE live_routes_v6 SET mask_length = ?, as_path = ?, next_hop = ?,
+		last_updated = ? WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`
 
 	insertLiveRouteV6SQL = `INSERT INTO live_routes_v6 (id, prefix, mask_length, origin_asn, peer_ip,
 		as_path, next_hop, last_updated) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`
@@ -262,8 +253,8 @@ const (
 // live route for its prefix.
 func upsertRouteRowV4(upd, ins, has *sql.Stmt, route *LiveRoute, pathJSON string) (
 	inserted, newPrefix bool, err error) {
-	res, err := upd.Exec(route.MaskLength, route.OriginASN, pathJSON, route.NextHop, route.LastUpdated,
-		route.Prefix, route.PeerIP)
+	res, err := upd.Exec(route.MaskLength, pathJSON, route.NextHop, route.LastUpdated,
+		route.Prefix, route.OriginASN, route.PeerIP)
 	if err != nil {
 		return false, false, err
 	}
@@ -294,8 +285,8 @@ func upsertRouteRowV4(upd, ins, has *sql.Stmt, route *LiveRoute, pathJSON string
 // live route for its prefix.
 func upsertRouteRowV6(upd, ins, has *sql.Stmt, route *LiveRoute, pathJSON string) (
 	inserted, newPrefix bool, err error) {
-	res, err := upd.Exec(route.MaskLength, route.OriginASN, pathJSON, route.NextHop, route.LastUpdated,
-		route.Prefix, route.PeerIP)
+	res, err := upd.Exec(route.MaskLength, pathJSON, route.NextHop, route.LastUpdated,
+		route.Prefix, route.OriginASN, route.PeerIP)
 	if err != nil {
 		return false, false, err
 	}
@@ -442,18 +433,32 @@ func (d *Database) DeleteLiveRouteBatch(deletions []LiveRouteDeletion) error {
 		}
 	}()
 
-	// Prepare statements for both IPv4 and IPv6 tables
-	deleteV4, err := tx.Prepare(`DELETE FROM live_routes_v4 WHERE prefix = ? AND peer_ip = ?`)
-	if err != nil {
-		return fmt.Errorf("failed to prepare IPv4 delete statement: %w", err)
-	}
-	defer func() { _ = deleteV4.Close() }()
+	// No longer need to separate deletions since we handle them in the loop below
 
-	deleteV6, err := tx.Prepare(`DELETE FROM live_routes_v6 WHERE prefix = ? AND peer_ip = ?`)
+	// Prepare statements for both IPv4 and IPv6 tables
+	stmtV4WithOrigin, err := tx.Prepare(`DELETE FROM live_routes_v4 WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`)
 	if err != nil {
-		return fmt.Errorf("failed to prepare IPv6 delete statement: %w", err)
+		return fmt.Errorf("failed to prepare IPv4 delete with origin statement: %w", err)
 	}
-	defer func() { _ = deleteV6.Close() }()
+	defer func() { _ = stmtV4WithOrigin.Close() }()
+
+	stmtV4WithoutOrigin, err := tx.Prepare(`DELETE FROM live_routes_v4 WHERE prefix = ? AND peer_ip = ?`)
+	if err != nil {
+		return fmt.Errorf("failed to prepare IPv4 delete without origin statement: %w", err)
+	}
+	defer func() { _ = stmtV4WithoutOrigin.Close() }()
+
+	stmtV6WithOrigin, err := tx.Prepare(`DELETE FROM live_routes_v6 WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`)
+	if err != nil {
+		return fmt.Errorf("failed to prepare IPv6 delete with origin statement: %w", err)
+	}
+	defer func() { _ = stmtV6WithOrigin.Close() }()
+
+	stmtV6WithoutOrigin, err := tx.Prepare(`DELETE FROM live_routes_v6 WHERE prefix = ? AND peer_ip = ?`)
+	if err != nil {
+		return fmt.Errorf("failed to prepare IPv6 delete without origin statement: %w", err)
+	}
+	defer func() { _ = stmtV6WithoutOrigin.Close() }()
 
 	hasV4, err := tx.Prepare(prefixHasLiveRouteV4SQL)
 	if err != nil {
@@ -472,18 +477,38 @@ func (d *Database) DeleteLiveRouteBatch(deletions []LiveRouteDeletion) error {
 	// Mask lengths of the prefixes this batch leaves with no live route.
 	var gonePrefixMaskLengthsV4, gonePrefixMaskLengthsV6 []int
 	for _, del := range deletions {
-		stmt := deleteV4
-		if del.IPVersion != ipVersionV4 {
-			stmt = deleteV6
+		var stmt *sql.Stmt
+
+		// Select appropriate statement based on IP version and whether we have origin ASN
+		//nolint:nestif // Clear logic for selecting the right statement
+		if del.IPVersion == ipVersionV4 {
+			if del.OriginASN == 0 {
+				stmt = stmtV4WithoutOrigin
+			} else {
+				stmt = stmtV4WithOrigin
+			}
+		} else {
+			if del.OriginASN == 0 {
+				stmt = stmtV6WithoutOrigin
+			} else {
+				stmt = stmtV6WithOrigin
+			}
+		}
+
+		// Execute deletion
+		var res sql.Result
+		if del.OriginASN == 0 {
+			res, err = stmt.Exec(del.Prefix, del.PeerIP)
+		} else {
+			res, err = stmt.Exec(del.Prefix, del.OriginASN, del.PeerIP)
 		}
 
-		res, err := stmt.Exec(del.Prefix, del.PeerIP)
 		if err != nil {
 			return fmt.Errorf("failed to delete route %s: %w", del.Prefix, err)
 		}
 
-		// The feed often withdraws a route that is not live, which deletes
-		// nothing, so the in-memory route counters use the rows-affected count.
+		// A deletion with no origin ASN can remove several rows, so use the
+		// exact rows-affected count to keep the in-memory route counters right.
 		affected, err := res.RowsAffected()
 		if err != nil {
 			return fmt.Errorf("failed to count deleted route %s: %w", del.Prefix, err)
@@ -1249,8 +1274,9 @@ func (d *Database) UpsertLiveRoute(route *LiveRoute) error {
 	return nil
 }
 
-// DeleteLiveRoute deletes the live route the peer has for the prefix
-func (d *Database) DeleteLiveRoute(prefix, peerIP string) error {
+// DeleteLiveRoute deletes a live route
+// If originASN is 0, deletes all routes for the prefix/peer combination
+func (d *Database) DeleteLiveRoute(prefix string, originASN int, peerIP string) error {
 	d.lock("DeleteLiveRoute")
 	defer d.unlock()
 
@@ -1275,12 +1301,22 @@ func (d *Database) DeleteLiveRoute(prefix, peerIP string) error {
 	}()
 
 	// Literal per-table queries (rather than one formatted with the table name)
-	// so the delete carries no dynamically built SQL.
+	// so the delete carries no dynamically built SQL. A delete with no origin
+	// ASN can remove several rows.
 	var res sql.Result
-	if isV4 {
+	switch {
+	case isV4 && originASN == 0:
 		res, err = tx.Exec(`DELETE FROM live_routes_v4 WHERE prefix = ? AND peer_ip = ?`, prefix, peerIP)
-	} else {
+	case isV4:
+		res, err = tx.Exec(
+			`DELETE FROM live_routes_v4 WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`,
+			prefix, originASN, peerIP)
+	case originASN == 0:
 		res, err = tx.Exec(`DELETE FROM live_routes_v6 WHERE prefix = ? AND peer_ip = ?`, prefix, peerIP)
+	default:
+		res, err = tx.Exec(
+			`DELETE FROM live_routes_v6 WHERE prefix = ? AND origin_asn = ? AND peer_ip = ?`,
+			prefix, originASN, peerIP)
 	}
 	if err != nil {
 		return err
@@ -1588,17 +1624,16 @@ func (d *Database) GetASPeersContext(ctx context.Context, asn int) ([]ASPeer, er
 }
 
 // GetPrefixDetails returns detailed information about a prefix
-func (d *Database) GetPrefixDetails(prefix string) ([]LiveRoute, map[int]ASN, error) {
+func (d *Database) GetPrefixDetails(prefix string) ([]LiveRoute, error) {
 	return d.GetPrefixDetailsContext(context.Background(), prefix)
 }
 
-// GetPrefixDetailsContext returns the live routes for a prefix and, keyed by
-// AS number, the handle and description of each AS that originates it.
-func (d *Database) GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, map[int]ASN, error) {
+// GetPrefixDetailsContext returns detailed information about a prefix with context support
+func (d *Database) GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, error) {
 	// Determine if it's IPv4 or IPv6 by parsing the prefix
 	_, ipnet, err := net.ParseCIDR(prefix)
 	if err != nil {
-		return nil, nil, fmt.Errorf("invalid prefix format: %w", err)
+		return nil, fmt.Errorf("invalid prefix format: %w", err)
 	}
 
 	tableName := "live_routes_v4"
@@ -1620,12 +1655,11 @@ func (d *Database) GetPrefixDetailsContext(ctx context.Context, prefix string) (
 
 	rows, err := d.db.QueryContext(ctx, query, prefix)
 	if err != nil {
-		return nil, nil, fmt.Errorf("failed to query prefix details: %w", err)
+		return nil, fmt.Errorf("failed to query prefix details: %w", err)
 	}
 	defer func() { _ = rows.Close() }()
 
 	var routes []LiveRoute
-	origins := make(map[int]ASN)
 	for rows.Next() {
 		var route LiveRoute
 		var pathJSON string
@@ -1648,18 +1682,13 @@ func (d *Database) GetPrefixDetailsContext(ctx context.Context, prefix string) (
 		route.IPVersion = ipVersion
 		route.MaskLength, _ = ipnet.Mask.Size()
 		routes = append(routes, route)
-		origins[route.OriginASN] = ASN{
-			ASN:         route.OriginASN,
-			Handle:      handle.String,
-			Description: description.String,
-		}
 	}
 
 	if len(routes) == 0 {
-		return nil, nil, fmt.Errorf("%w: %s", ErrNoRoute, prefix)
+		return nil, fmt.Errorf("%w: %s", ErrNoRoute, prefix)
 	}
 
-	return routes, origins, nil
+	return routes, nil
 }
 
 // GetRandomPrefixesByLength returns a random sample of prefixes with the specified mask length
@@ -1847,12 +1876,11 @@ func (d *Database) GetIPInfo(ip string) (*IPInfo, error) {
 // GetIPInfoContext returns comprehensive IP information with context support.
 //
 // It finds the most specific live route for the address with point lookups on
-// the prefix index: for each mask length from the longest (32 or 128) down to
-// minLookupMaskLengthV4 or minLookupMaskLengthV6 it looks up the address's
-// network prefix at that length, and the first length with a live route wins.
-// That is at most 25 or 113 indexed lookups, however many routes are live. The
-// prefix is looked up in the text form net/netip prints, which is the form the
-// prefix handler stores.
+// the prefix index: for each mask length from the longest (32 or 128) down to 0
+// it looks up the address's network prefix at that length, and the first length
+// with a live route wins. That is at most 33 or 129 indexed lookups, however
+// many routes are live. The prefix is looked up in the text form net/netip
+// prints, which is the form the prefix handler stores.
 func (d *Database) GetIPInfoContext(ctx context.Context, ip string) (*IPInfo, error) {
 	addr, err := netip.ParseAddr(ip)
 	if err != nil {
@@ -1863,11 +1891,9 @@ func (d *Database) GetIPInfoContext(ctx context.Context, ip string) (*IPInfo, er
 
 	info := &IPInfo{IP: ip, IPVersion: ipVersionV6}
 	routesTable, prefixesTable := "live_routes_v6", "prefixes_v6"
-	minMaskLength := minLookupMaskLengthV6
 	if addr.Is4() {
 		info.IPVersion = ipVersionV4
 		routesTable, prefixesTable = "live_routes_v4", "prefixes_v4"
-		minMaskLength = minLookupMaskLengthV4
 	}
 
 	// Route info with peer count and prefix first_seen
@@ -1908,7 +1934,7 @@ func (d *Database) GetIPInfoContext(ctx context.Context, ip string) (*IPInfo, er
 	var whoisUpdatedAt sql.NullTime
 
 	found := false
-	for bits := addr.BitLen(); bits >= minMaskLength; bits-- {
+	for bits := addr.BitLen(); bits >= 0; bits-- {
 		prefix := netip.PrefixFrom(addr, bits).Masked().String()
 		err := stmt.QueryRowContext(ctx, prefix).Scan(
 			&info.Netblock,

internal/database/database_test.go

@@ -13,7 +13,6 @@ import (
 	"git.eeqj.de/sneak/routewatch/internal/config"
 	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"github.com/google/uuid"
-	"github.com/mattn/go-sqlite3"
 )
 
 // tempStoreMemory is the PRAGMA temp_store value meaning "hold temp B-trees in
@@ -123,8 +122,8 @@ func TestGetIPInfoFindsMostSpecificLiveRoute(t *testing.T) {
 	lookup("2001:db9::1", "")
 
 	err = db.DeleteLiveRouteBatch([]LiveRouteDeletion{
-		{Prefix: "10.1.2.0/24", PeerIP: testPeerIP, IPVersion: ipVersionV4},
-		{Prefix: "2001:db8:1:2::/64", PeerIP: testPeerIP, IPVersion: ipVersionV6},
+		{Prefix: "10.1.2.0/24", OriginASN: 64502, PeerIP: testPeerIP, IPVersion: ipVersionV4},
+		{Prefix: "2001:db8:1:2::/64", OriginASN: 64502, PeerIP: testPeerIP, IPVersion: ipVersionV6},
 	})
 	if err != nil {
 		t.Fatalf("DeleteLiveRouteBatch: %v", err)
@@ -134,112 +133,6 @@ func TestGetIPInfoFindsMostSpecificLiveRoute(t *testing.T) {
 	lookup("2001:db8:1:2::3", "2001:db8:1::/48")
 }
 
-// TestGetIPInfoIgnoresShortRoutes checks that the IP lookup does not report a
-// default route, or a route shorter than /8 for IPv4 or /16 for IPv6, as the
-// route for an address, and that a route of exactly /8 or /16, or longer, still
-// is. The prefixes are written out so that a wrong limit fails the test.
-func TestGetIPInfoIgnoresShortRoutes(t *testing.T) {
-	cfg := &config.Config{StateDir: t.TempDir()}
-
-	db, err := New(cfg, logger.New())
-	if err != nil {
-		t.Fatalf("failed to create database: %v", err)
-	}
-	defer func() { _ = db.Close() }()
-
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	announce := func(prefix string, asn int) {
-		t.Helper()
-
-		err := db.UpsertLiveRouteBatch([]*LiveRoute{{
-			ID:          uuid.New(),
-			Prefix:      prefix,
-			MaskLength:  netip.MustParsePrefix(prefix).Bits(),
-			IPVersion:   detectIPVersion(prefix),
-			OriginASN:   asn,
-			PeerIP:      testPeerIP,
-			ASPath:      []int{asn},
-			NextHop:     testPeerIP,
-			LastUpdated: ts,
-		}})
-		if err != nil {
-			t.Fatalf("UpsertLiveRouteBatch(%s): %v", prefix, err)
-		}
-	}
-
-	// lookup checks that ip resolves to the live prefix netblock from asn.
-	lookup := func(ip, netblock string, asn int) {
-		t.Helper()
-
-		info, err := db.GetIPInfo(ip)
-		if err != nil {
-			t.Errorf("GetIPInfo(%s): %v", ip, err)
-
-			return
-		}
-		if info.Netblock != netblock || info.ASN != asn {
-			t.Errorf("GetIPInfo(%s) = %s AS%d, want %s AS%d", ip, info.Netblock, info.ASN, netblock, asn)
-		}
-	}
-
-	// Default and very short routes, and routes one bit shorter than each limit.
-	announce("2000::/3", 64500)
-	announce("0.0.0.0/0", 64500)
-	announce("2000::/15", 64500)
-	announce("192.0.0.0/7", 64500)
-
-	for _, ip := range []string{"2001:db8::1", "192.0.2.1"} {
-		if info, err := db.GetIPInfo(ip); !errors.Is(err, ErrNoRoute) {
-			t.Errorf("GetIPInfo(%s) with only short routes = %+v, %v; want ErrNoRoute", ip, info, err)
-		}
-	}
-
-	// Routes of exactly the minimum length are used.
-	announce("2001::/16", 64501)
-	announce("192.0.0.0/8", 64501)
-
-	lookup("2001:db8::1", "2001::/16", 64501)
-	lookup("192.0.2.1", "192.0.0.0/8", 64501)
-
-	announce("2001:db8::/32", 64502)
-
-	lookup("2001:db8::1", "2001:db8::/32", 64502)
-}
-
-// TestLiveRouteTablesHoldOneRoutePerPrefixAndPeer checks that each live route
-// table refuses a second route from a peer for a prefix, even with another
-// origin AS. An upsert updates the peer's route before it would insert one, so
-// only an insert straight into the table shows what the table allows.
-func TestLiveRouteTablesHoldOneRoutePerPrefixAndPeer(t *testing.T) {
-	db, err := New(&config.Config{StateDir: t.TempDir()}, logger.New())
-	if err != nil {
-		t.Fatalf("failed to create database: %v", err)
-	}
-	defer func() { _ = db.Close() }()
-
-	const otherOriginASN = 64501
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	for _, tt := range []struct {
-		route     *LiveRoute
-		insertSQL string
-	}{
-		{route: mkV4Route(t, "198.51.100.0/24", 64500, ts), insertSQL: insertLiveRouteV4SQL},
-		{route: mkV6Route("2001:db8::/32", 64500, ts), insertSQL: insertLiveRouteV6SQL},
-	} {
-		if err := db.UpsertLiveRoute(tt.route); err != nil {
-			t.Fatalf("UpsertLiveRoute(%s): %v", tt.route.Prefix, err)
-		}
-
-		_, err := db.db.Exec(tt.insertSQL, uuid.NewString(), tt.route.Prefix, tt.route.MaskLength,
-			otherOriginASN, tt.route.PeerIP, "[]", tt.route.NextHop, ts)
-		var sqliteErr sqlite3.Error
-		if !errors.As(err, &sqliteErr) || sqliteErr.ExtendedCode != sqlite3.ErrConstraintUnique {
-			t.Errorf("second route from peer %s for %s: error %v, want a UNIQUE constraint error",
-				tt.route.PeerIP, tt.route.Prefix, err)
-		}
-	}
-}
-
 // TestConnectionPoolPragmas holds several pooled connections open at once and
 // checks each one carries the per-connection settings from the DSN, plus the
 // process-wide hard heap limit, and sees the new file with auto_vacuum
@@ -341,6 +234,7 @@ func TestVacuumReturnsFreePages(t *testing.T) {
 		routes = append(routes, route)
 		deletions = append(deletions, LiveRouteDeletion{
 			Prefix:    route.Prefix,
+			OriginASN: asn,
 			PeerIP:    route.PeerIP,
 			IPVersion: ipVersionV4,
 		})

internal/database/interface.go

@@ -55,7 +55,7 @@ type Store interface {
 	// Live route operations
 	UpsertLiveRoute(route *LiveRoute) error
 	UpsertLiveRouteBatch(routes []*LiveRoute) error
-	DeleteLiveRoute(prefix, peerIP string) error
+	DeleteLiveRoute(prefix string, originASN int, peerIP string) error
 	DeleteLiveRouteBatch(deletions []LiveRouteDeletion) error
 	GetPrefixDistribution() (ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error)
 	GetPrefixDistributionContext(ctx context.Context) (ipv4 []PrefixDistribution, ipv6 []PrefixDistribution, err error)
@@ -76,8 +76,8 @@ type Store interface {
 	GetASDetailsContext(ctx context.Context, asn int) (*ASN, []LiveRoute, error)
 	GetASPeers(asn int) ([]ASPeer, error)
 	GetASPeersContext(ctx context.Context, asn int) ([]ASPeer, error)
-	GetPrefixDetails(prefix string) ([]LiveRoute, map[int]ASN, error)
-	GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, map[int]ASN, error)
+	GetPrefixDetails(prefix string) ([]LiveRoute, error)
+	GetPrefixDetailsContext(ctx context.Context, prefix string) ([]LiveRoute, error)
 	GetRandomPrefixesByLength(maskLength, ipVersion, limit int) ([]LiveRoute, error)
 	GetRandomPrefixesByLengthContext(ctx context.Context, maskLength, ipVersion, limit int) ([]LiveRoute, error)
 

internal/database/models.go

@@ -114,6 +114,7 @@ type IPInfo struct {
 // LiveRouteDeletion represents parameters for deleting a live route
 type LiveRouteDeletion struct {
 	Prefix    string
+	OriginASN int
 	PeerIP    string
 	IPVersion int
 }

internal/database/schema.sql

@@ -107,7 +107,7 @@ CREATE TABLE IF NOT EXISTS live_routes_v4 (
 	as_path TEXT NOT NULL, -- JSON array
 	next_hop TEXT NOT NULL,
 	last_updated DATETIME NOT NULL,
-	UNIQUE(prefix, peer_ip) -- a peer has at most one route for a prefix
+	UNIQUE(prefix, origin_asn, peer_ip)
 );
 
 -- IPv6 routing table maintained by PrefixHandler
@@ -120,7 +120,7 @@ CREATE TABLE IF NOT EXISTS live_routes_v6 (
 	as_path TEXT NOT NULL, -- JSON array
 	next_hop TEXT NOT NULL,
 	last_updated DATETIME NOT NULL,
-	UNIQUE(prefix, peer_ip) -- a peer has at most one route for a prefix
+	UNIQUE(prefix, origin_asn, peer_ip)
 );
 
 -- Indexes for live_routes_v4 table

internal/routewatch/app_integration_test.go

@@ -205,7 +205,7 @@ func (m *mockStore) UpsertLiveRoute(route *database.LiveRoute) error {
 }
 
 // DeleteLiveRoute mock implementation
-func (m *mockStore) DeleteLiveRoute(prefix, peerIP string) error {
+func (m *mockStore) DeleteLiveRoute(prefix string, originASN int, peerIP string) error {
 	// Simple mock - just return nil
 	return nil
 }
@@ -252,15 +252,13 @@ func (m *mockStore) GetASDetailsContext(ctx context.Context, asn int) (*database
 }
 
 // GetPrefixDetails mock implementation
-func (m *mockStore) GetPrefixDetails(prefix string) ([]database.LiveRoute, map[int]database.ASN, error) {
+func (m *mockStore) GetPrefixDetails(prefix string) ([]database.LiveRoute, error) {
 	// Return empty routes for now
-	return []database.LiveRoute{}, map[int]database.ASN{}, nil
+	return []database.LiveRoute{}, nil
 }
 
 // GetPrefixDetailsContext mock implementation with context support
-func (m *mockStore) GetPrefixDetailsContext(
-	ctx context.Context, prefix string,
-) ([]database.LiveRoute, map[int]database.ASN, error) {
+func (m *mockStore) GetPrefixDetailsContext(ctx context.Context, prefix string) ([]database.LiveRoute, error) {
 	return m.GetPrefixDetails(prefix)
 }
 

internal/routewatch/cli.go

@@ -20,8 +20,6 @@ const (
 	debugInterval = 60 * time.Second
 	// bytesPerMB is bytes per megabyte
 	bytesPerMB = 1024 * 1024
-	// failureExitCode is the exit status when RouteWatch stops on an error
-	failureExitCode = 1
 )
 
 // logDebugStats logs goroutine count and memory usage
@@ -85,9 +83,6 @@ func CLIEntry() {
 					go func() {
 						if err := rw.Run(ctx); err != nil {
 							logger.Error("RouteWatch error", "error", err)
-							if err := shutdowner.Shutdown(fx.ExitCode(failureExitCode)); err != nil {
-								logger.Error("Failed to shutdown gracefully", "error", err)
-							}
 						}
 					}()
 

internal/routewatch/prefixhandler.go

@@ -105,24 +105,7 @@ func (h *PrefixHandler) HandleMessage(msg *ristypes.RISMessage) {
 	h.mu.Lock()
 	defer h.mu.Unlock()
 
-	// Withdrawals are queued before announcements, because the batch keeps
-	// each peer's last update for a prefix: a message that lists a prefix as
-	// both withdrawn and announced keeps the route (RFC 4271 section 4.3).
-	// A withdrawal names only the prefix and peer: the message's AS path, and
-	// so its origin AS, belongs to the announced prefixes.
-	for _, prefix := range msg.Withdrawals {
-		h.batch = append(h.batch, prefixUpdate{
-			prefix:      canonicalPrefix(prefix),
-			peer:        msg.Peer,
-			messageType: "withdrawal",
-			timestamp:   timestamp,
-		})
-		// Record withdrawal in metrics
-		if h.metrics != nil {
-			h.metrics.RecordWithdrawal()
-		}
-	}
-
+	// Process announcements
 	for _, announcement := range msg.Announcements {
 		for _, prefix := range announcement.Prefixes {
 			h.batch = append(h.batch, prefixUpdate{
@@ -140,6 +123,22 @@ func (h *PrefixHandler) HandleMessage(msg *ristypes.RISMessage) {
 		}
 	}
 
+	// Process withdrawals
+	for _, prefix := range msg.Withdrawals {
+		h.batch = append(h.batch, prefixUpdate{
+			prefix:      canonicalPrefix(prefix),
+			originASN:   originASN, // Use the originASN from path if available
+			peer:        msg.Peer,
+			messageType: "withdrawal",
+			timestamp:   timestamp,
+			path:        msg.Path,
+		})
+		// Record withdrawal in metrics
+		if h.metrics != nil {
+			h.metrics.RecordWithdrawal()
+		}
+	}
+
 	// Check if we need to flush
 	if len(h.batch) >= prefixBatchSize {
 		h.flushBatchLocked()
@@ -180,14 +179,14 @@ func (h *PrefixHandler) flushBatchLocked() {
 	startTime := time.Now()
 	batchSize := len(h.batch)
 
-	// For each prefix and peer, keep only the last update the feed delivered.
-	// Updates from different peers for the same prefix are all kept. Arrival
-	// order decides, not the timestamp: timestamps are whole seconds, so
-	// updates within one second carry the same one.
-	type prefixAndPeer struct{ prefix, peer string }
-	lastUpdates := make(map[prefixAndPeer]prefixUpdate)
+	// Group updates by prefix to deduplicate
+	// For each prefix, keep the latest update
+	prefixMap := make(map[string]prefixUpdate)
 	for _, update := range h.batch {
-		lastUpdates[prefixAndPeer{update.prefix, update.peer}] = update
+		key := update.prefix
+		if existing, ok := prefixMap[key]; !ok || update.timestamp.After(existing.timestamp) {
+			prefixMap[key] = update
+		}
 	}
 
 	// Collect routes to upsert and delete
@@ -197,7 +196,7 @@ func (h *PrefixHandler) flushBatchLocked() {
 	// Collect unique prefixes to update
 	prefixesToUpdate := make(map[string]time.Time)
 
-	for _, update := range lastUpdates {
+	for _, update := range prefixMap {
 		// Track prefix for both announcements and withdrawals
 		if _, exists := prefixesToUpdate[update.prefix]; !exists || update.timestamp.After(prefixesToUpdate[update.prefix]) {
 			prefixesToUpdate[update.prefix] = update.timestamp
@@ -221,6 +220,7 @@ func (h *PrefixHandler) flushBatchLocked() {
 			// Create deletion record for batch delete
 			routesToDelete = append(routesToDelete, database.LiveRouteDeletion{
 				Prefix:    update.prefix,
+				OriginASN: update.originASN,
 				PeerIP:    update.peer,
 				IPVersion: ipVersion,
 			})
@@ -255,7 +255,7 @@ func (h *PrefixHandler) flushBatchLocked() {
 	elapsed := time.Since(startTime)
 	h.logger.Debug("Flushed prefix batch",
 		"batch_size", batchSize,
-		"unique_prefixes", len(prefixesToUpdate),
+		"unique_prefixes", len(prefixMap),
 		"success", successCount,
 		"duration_ms", elapsed.Milliseconds(),
 	)
@@ -424,24 +424,51 @@ func (h *PrefixHandler) processAnnouncementDirect(update prefixUpdate) {
 // processWithdrawalDirect handles removing a route directly without prefix table
 // nolint:unused // kept for potential future use
 func (h *PrefixHandler) processWithdrawalDirect(update prefixUpdate) {
-	if err := h.db.DeleteLiveRoute(update.prefix, update.peer); err != nil {
-		h.logger.Error("Failed to delete live route",
-			"prefix", update.prefix,
-			"peer", update.peer,
-			"error", err,
-		)
+	// For withdrawals, we need to delete the route from live_routes
+	if update.originASN > 0 {
+		if err := h.db.DeleteLiveRoute(update.prefix, update.originASN, update.peer); err != nil {
+			h.logger.Error("Failed to delete live route",
+				"prefix", update.prefix,
+				"origin_asn", update.originASN,
+				"peer", update.peer,
+				"error", err,
+			)
+		}
+	} else {
+		// If no origin ASN, just delete all routes for this prefix from this peer
+		if err := h.db.DeleteLiveRoute(update.prefix, 0, update.peer); err != nil {
+			h.logger.Error("Failed to delete live route (no origin ASN)",
+				"prefix", update.prefix,
+				"peer", update.peer,
+				"error", err,
+			)
+		}
 	}
 }
 
 // processWithdrawal handles removing a route from the live routing table
 // nolint:unused // kept for potential future use
 func (h *PrefixHandler) processWithdrawal(_ *database.Prefix, update prefixUpdate) {
-	if err := h.db.DeleteLiveRoute(update.prefix, update.peer); err != nil {
-		h.logger.Error("Failed to delete live route",
-			"prefix", update.prefix,
-			"peer", update.peer,
-			"error", err,
-		)
+	// For withdrawals, we need to delete the route from live_routes
+	// Since we have the origin ASN from the update, we can delete the specific route
+	if update.originASN > 0 {
+		if err := h.db.DeleteLiveRoute(update.prefix, update.originASN, update.peer); err != nil {
+			h.logger.Error("Failed to delete live route",
+				"prefix", update.prefix,
+				"origin_asn", update.originASN,
+				"peer", update.peer,
+				"error", err,
+			)
+		}
+	} else {
+		// If no origin ASN, just delete all routes for this prefix from this peer
+		if err := h.db.DeleteLiveRoute(update.prefix, 0, update.peer); err != nil {
+			h.logger.Error("Failed to delete live route (no origin ASN)",
+				"prefix", update.prefix,
+				"peer", update.peer,
+				"error", err,
+			)
+		}
 	}
 }
 

internal/routewatch/prefixhandler_test.go

@@ -1,10 +1,7 @@
 package routewatch
 
 import (
-	"context"
 	"errors"
-	"fmt"
-	"slices"
 	"testing"
 	"time"
 
@@ -75,263 +72,3 @@ func TestPrefixHandlerStoresPrefixesTheIPLookupFinds(t *testing.T) {
 		}
 	}
 }
-
-// TestPrefixHandlerAppliesEachPeersLastUpdateInABatch runs updates for one
-// prefix through the prefix handler into a real database. All updates carry the
-// same timestamp, as updates within one second of the feed do. Within a batch,
-// the last update each peer sent for the prefix decides whether that peer has a
-// live route for it, and updates from different peers are all applied. The
-// in-memory route count and prefix distribution must match the route table.
-func TestPrefixHandlerAppliesEachPeersLastUpdateInABatch(t *testing.T) {
-	const (
-		prefix           = "198.51.100.0/24"
-		prefixMaskLength = 24
-		otherPeerIP      = "2001:db8:ffff::2"
-	)
-
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	announce := func(peer string) *ristypes.RISMessage {
-		return &ristypes.RISMessage{
-			Peer:            peer,
-			Path:            ristypes.ASPath{testASNA, testASNB},
-			ParsedTimestamp: ts,
-			Announcements:   []ristypes.RISAnnouncement{{NextHop: peer, Prefixes: []string{prefix}}},
-		}
-	}
-	withdraw := func(peer string) *ristypes.RISMessage {
-		return &ristypes.RISMessage{Peer: peer, ParsedTimestamp: ts, Withdrawals: []string{prefix}}
-	}
-	announceAndWithdraw := func(peer string) *ristypes.RISMessage {
-		msg := announce(peer)
-		msg.Withdrawals = []string{prefix}
-
-		return msg
-	}
-
-	tests := []struct {
-		name string
-		// Each inner list is handled and then flushed as one batch.
-		batches [][]*ristypes.RISMessage
-		// The peers left with a live route for the prefix, by peer IP.
-		wantPeers []string
-	}{
-		{
-			name:      "two peers announce the prefix",
-			batches:   [][]*ristypes.RISMessage{{announce(testPeerIP), announce(otherPeerIP)}},
-			wantPeers: []string{testPeerIP, otherPeerIP},
-		},
-		{
-			name: "two peers withdraw the prefix",
-			batches: [][]*ristypes.RISMessage{
-				{announce(testPeerIP)},
-				{announce(otherPeerIP)},
-				{withdraw(testPeerIP), withdraw(otherPeerIP)},
-			},
-		},
-		{
-			name:    "a peer announces and then withdraws the prefix",
-			batches: [][]*ristypes.RISMessage{{announce(testPeerIP), withdraw(testPeerIP)}},
-		},
-		{
-			name: "a peer withdraws and then re-announces the prefix",
-			batches: [][]*ristypes.RISMessage{
-				{announce(testPeerIP)},
-				{withdraw(testPeerIP), announce(testPeerIP)},
-			},
-			wantPeers: []string{testPeerIP},
-		},
-		{
-			// RFC 4271 section 4.3: the announcement counts, not the withdrawal.
-			name: "one message announces and withdraws the prefix",
-			batches: [][]*ristypes.RISMessage{
-				{announce(testPeerIP)},
-				{announceAndWithdraw(testPeerIP)},
-			},
-			wantPeers: []string{testPeerIP},
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			db, err := database.New(&config.Config{StateDir: t.TempDir()}, logger.New())
-			if err != nil {
-				t.Fatalf("failed to create database: %v", err)
-			}
-			defer func() { _ = db.Close() }()
-
-			// Built without NewPrefixHandler's flush timer, so the test flushes itself.
-			h := &PrefixHandler{db: db, logger: logger.New()}
-			for _, batch := range tt.batches {
-				for _, msg := range batch {
-					h.HandleMessage(msg)
-				}
-				h.mu.Lock()
-				h.flushBatchLocked()
-				h.mu.Unlock()
-			}
-
-			ctx := context.Background()
-			routes, _, err := db.GetPrefixDetailsContext(ctx, prefix)
-			if err != nil && !errors.Is(err, database.ErrNoRoute) {
-				t.Fatalf("GetPrefixDetailsContext: %v", err)
-			}
-			var gotPeers []string
-			for _, route := range routes {
-				gotPeers = append(gotPeers, route.PeerIP)
-			}
-			if !slices.Equal(gotPeers, tt.wantPeers) {
-				t.Errorf("peers with a live route for %s = %v, want %v", prefix, gotPeers, tt.wantPeers)
-			}
-
-			var wantDistribution []database.PrefixDistribution
-			if len(tt.wantPeers) > 0 {
-				wantDistribution = []database.PrefixDistribution{{MaskLength: prefixMaskLength, Count: 1}}
-			}
-			assertCounts(t, db, ipv4Version, len(tt.wantPeers), wantDistribution)
-		})
-	}
-}
-
-// TestPrefixHandlerKeepsOneRoutePerPrefixAndPeer runs updates from one peer
-// through the prefix handler into a real database, flushing each message as its
-// own batch, once with IPv4 prefixes and once with IPv6 prefixes. A peer has at
-// most one route for a prefix: a later announcement replaces it whatever its
-// origin AS, and a withdrawal removes it whatever AS the message's AS path ends
-// in. The in-memory route count and prefix distribution must match the route
-// table.
-func TestPrefixHandlerKeepsOneRoutePerPrefixAndPeer(t *testing.T) {
-	families := []struct {
-		ipVersion           int
-		prefix, otherPrefix string
-		// The mask length of both prefixes.
-		maskLength int
-	}{
-		{ipVersion: ipv4Version, prefix: "198.51.100.0/24", otherPrefix: "203.0.113.0/24", maskLength: 24},
-		{ipVersion: ipv6Version, prefix: "2001:db8:1::/48", otherPrefix: "2001:db8:2::/48", maskLength: 48},
-	}
-
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	announce := func(path ristypes.ASPath, announced string) *ristypes.RISMessage {
-		return &ristypes.RISMessage{
-			Peer:            testPeerIP,
-			Path:            path,
-			ParsedTimestamp: ts,
-			Announcements:   []ristypes.RISAnnouncement{{NextHop: testPeerIP, Prefixes: []string{announced}}},
-		}
-	}
-
-	for _, family := range families {
-		prefix, otherPrefix := family.prefix, family.otherPrefix
-
-		// One message that announces otherPrefix with origin AS testASNB and
-		// withdraws prefix.
-		announceOtherAndWithdraw := announce(ristypes.ASPath{testASNA, testASNB}, otherPrefix)
-		announceOtherAndWithdraw.Withdrawals = []string{prefix}
-
-		tests := []struct {
-			name     string
-			messages []*ristypes.RISMessage
-			// The origin AS of the peer's live route for each prefix. A prefix
-			// left out must have no live route.
-			wantOrigins map[string]int
-		}{
-			{
-				name: "the peer announces the prefix with a new origin AS",
-				messages: []*ristypes.RISMessage{
-					announce(ristypes.ASPath{testASNA}, prefix),
-					announce(ristypes.ASPath{testASNA, testASNB}, prefix),
-				},
-				wantOrigins: map[string]int{prefix: testASNB},
-			},
-			{
-				name: "one message announces a prefix with another origin AS and withdraws the prefix",
-				messages: []*ristypes.RISMessage{
-					announce(ristypes.ASPath{testASNA}, prefix),
-					announceOtherAndWithdraw,
-				},
-				wantOrigins: map[string]int{otherPrefix: testASNB},
-			},
-		}
-
-		for _, tt := range tests {
-			t.Run(fmt.Sprintf("IPv%d %s", family.ipVersion, tt.name), func(t *testing.T) {
-				db, err := database.New(&config.Config{StateDir: t.TempDir()}, logger.New())
-				if err != nil {
-					t.Fatalf("failed to create database: %v", err)
-				}
-				defer func() { _ = db.Close() }()
-
-				// Built without NewPrefixHandler's flush timer, so the test flushes itself.
-				h := &PrefixHandler{db: db, logger: logger.New()}
-				for _, msg := range tt.messages {
-					h.HandleMessage(msg)
-					h.mu.Lock()
-					h.flushBatchLocked()
-					h.mu.Unlock()
-				}
-
-				for _, p := range []string{prefix, otherPrefix} {
-					routes, _, err := db.GetPrefixDetailsContext(context.Background(), p)
-					if err != nil && !errors.Is(err, database.ErrNoRoute) {
-						t.Fatalf("GetPrefixDetailsContext(%s): %v", p, err)
-					}
-					var gotOrigins []int
-					for _, route := range routes {
-						gotOrigins = append(gotOrigins, route.OriginASN)
-					}
-					var wantOrigins []int
-					if origin, ok := tt.wantOrigins[p]; ok {
-						wantOrigins = []int{origin}
-					}
-					if !slices.Equal(gotOrigins, wantOrigins) {
-						t.Errorf("origin ASes of the live routes for %s = %v, want %v", p, gotOrigins, wantOrigins)
-					}
-				}
-
-				wantDistribution := []database.PrefixDistribution{
-					{MaskLength: family.maskLength, Count: len(tt.wantOrigins)},
-				}
-				assertCounts(t, db, family.ipVersion, len(tt.wantOrigins), wantDistribution)
-			})
-		}
-	}
-}
-
-// assertCounts checks that the live route count and prefix distribution of one
-// IP version are wantRoutes and wantDistribution, both as held in memory and as
-// read from the route table.
-func assertCounts(t *testing.T, db *database.Database, ipVersion, wantRoutes int,
-	wantDistribution []database.PrefixDistribution) {
-	t.Helper()
-
-	ctx := context.Background()
-	stats, err := db.GetStatsContext(ctx)
-	if err != nil {
-		t.Fatalf("GetStatsContext: %v", err)
-	}
-	tableRoutesV4, tableRoutesV6, err := db.GetLiveRouteCountsContext(ctx)
-	if err != nil {
-		t.Fatalf("GetLiveRouteCountsContext: %v", err)
-	}
-	queryDistributionV4, queryDistributionV6, err := db.GetPrefixDistributionContext(ctx)
-	if err != nil {
-		t.Fatalf("GetPrefixDistributionContext: %v", err)
-	}
-
-	memoryRoutes, tableRoutes := stats.IPv4Routes, tableRoutesV4
-	memoryDistribution, queryDistribution := stats.IPv4PrefixDistribution, queryDistributionV4
-	if ipVersion == ipv6Version {
-		memoryRoutes, tableRoutes = stats.IPv6Routes, tableRoutesV6
-		memoryDistribution, queryDistribution = stats.IPv6PrefixDistribution, queryDistributionV6
-	}
-
-	if memoryRoutes != wantRoutes || tableRoutes != wantRoutes {
-		t.Errorf("IPv%d live routes: %d in memory, %d in the table, want %d",
-			ipVersion, memoryRoutes, tableRoutes, wantRoutes)
-	}
-	if !slices.Equal(memoryDistribution, wantDistribution) ||
-		!slices.Equal(queryDistribution, wantDistribution) {
-		t.Errorf("IPv%d prefix distribution: %v in memory, %v from the table, want %v",
-			ipVersion, memoryDistribution, queryDistribution, wantDistribution)
-	}
-}

internal/server/handlers.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"net"
 	"net/http"
-	"net/netip"
 	"runtime"
 	"sort"
 	"strconv"
@@ -749,17 +748,10 @@ func (s *Server) handlePrefixDetailJSON() http.HandlerFunc {
 			return
 		}
 
-		// Look the prefix up in the text form net/netip prints, the form the
-		// tables store, so that any valid way of writing it finds the route.
-		parsed, err := netip.ParsePrefix(prefixParam + "/" + lenParam)
-		if err != nil {
-			writeJSONError(w, http.StatusBadRequest, err.Error())
+		// Combine prefix and length into CIDR notation
+		prefix := prefixParam + "/" + lenParam
 
-			return
-		}
-		prefix := parsed.Masked().String()
-
-		routes, _, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
+		routes, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				writeJSONError(w, http.StatusNotFound, err.Error())
@@ -920,17 +912,10 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 			return
 		}
 
-		// Look the prefix up in the text form net/netip prints, the form the
-		// tables store, so that any valid way of writing it finds the route.
-		parsed, err := netip.ParsePrefix(prefixParam + "/" + lenParam)
-		if err != nil {
-			http.Error(w, "Invalid prefix", http.StatusBadRequest)
+		// Combine prefix and length into CIDR notation
+		prefix := prefixParam + "/" + lenParam
 
-			return
-		}
-		prefix := parsed.Masked().String()
-
-		routes, originASNs, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
+		routes, err := s.db.GetPrefixDetailsContext(r.Context(), prefix)
 		if err != nil {
 			if errors.Is(err, database.ErrNoRoute) {
 				http.Error(w, "Prefix not found", http.StatusNotFound)
@@ -952,10 +937,18 @@ func (s *Server) handlePrefixDetail() http.HandlerFunc {
 		originMap := make(map[int]*ASNInfo)
 		for _, route := range routes {
 			if _, exists := originMap[route.OriginASN]; !exists {
+				// Get AS info from database
+				asInfo, _, _ := s.db.GetASDetailsContext(r.Context(), route.OriginASN)
+				handle := ""
+				description := ""
+				if asInfo != nil {
+					handle = asInfo.Handle
+					description = asInfo.Description
+				}
 				originMap[route.OriginASN] = &ASNInfo{
 					ASN:         route.OriginASN,
-					Handle:      originASNs[route.OriginASN].Handle,
-					Description: originASNs[route.OriginASN].Description,
+					Handle:      handle,
+					Description: description,
 					PeerCount:   0,
 				}
 			}

internal/server/handlers_test.go

@@ -3,13 +3,10 @@ package server
 import (
 	"context"
 	"encoding/json"
-	"errors"
-	"html"
 	"net/http"
 	"net/http/httptest"
 	"runtime"
 	"slices"
-	"strings"
 	"testing"
 	"time"
 
@@ -18,7 +15,6 @@ import (
 	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/metrics"
 	"git.eeqj.de/sneak/routewatch/internal/streamer"
-	"git.eeqj.de/sneak/routewatch/pkg/asinfo"
 	"github.com/google/uuid"
 )
 
@@ -152,124 +148,6 @@ func TestStatsHandlersAnswerFromMemory(t *testing.T) {
 	}
 }
 
-// TestPrefixDetailHandlersParsePrefix checks that both prefix pages find a
-// stored route whatever valid text form the URL writes its prefix in, and
-// answer 400 for a prefix that does not parse. The tables store the form
-// net/netip prints. Before the fix the URL text was looked up as typed, so
-// "2001:DB8:0:0::/32" was not found although "2001:db8::/32" was stored, and
-// "foo/24" answered 500 (https://git.eeqj.de/sneak/routewatch/issues/71).
-func TestPrefixDetailHandlersParsePrefix(t *testing.T) {
-	db, err := database.New(&config.Config{StateDir: t.TempDir()}, logger.New())
-	if err != nil {
-		t.Fatalf("database.New: %v", err)
-	}
-	t.Cleanup(func() { _ = db.Close() })
-
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	if err := db.UpsertLiveRouteBatch([]*database.LiveRoute{
-		{
-			ID: uuid.New(), Prefix: "192.0.2.0/24", MaskLength: 24, IPVersion: 4,
-			OriginASN: 64500, PeerIP: "198.51.100.1", ASPath: []int{64500}, NextHop: "198.51.100.1",
-			LastUpdated: ts,
-		},
-		{
-			ID: uuid.New(), Prefix: "2001:db8::/32", MaskLength: 32, IPVersion: 6,
-			OriginASN: 64501, PeerIP: "2001:db8::1", ASPath: []int{64501}, NextHop: "2001:db8::1",
-			LastUpdated: ts,
-		},
-	}); err != nil {
-		t.Fatalf("UpsertLiveRouteBatch: %v", err)
-	}
-
-	s := New(db, streamer.New(logger.New(), metrics.New()), logger.New(), &config.Config{})
-
-	tests := []struct {
-		path string
-		want int
-	}{
-		{"/api/v1/prefix/foo/24", http.StatusBadRequest},
-		{"/prefix/foo/24", http.StatusBadRequest},
-		{"/api/v1/prefix/2001:DB8:0:0::/32", http.StatusOK},
-		{"/prefix/2001:DB8:0:0::/32", http.StatusOK},
-		{"/api/v1/prefix/192.0.2.1/24", http.StatusOK},
-		{"/prefix/192.0.2.1/24", http.StatusOK},
-	}
-
-	for _, tt := range tests {
-		rec := httptest.NewRecorder()
-		s.router.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, tt.path, nil))
-		if rec.Code != tt.want {
-			t.Errorf("%s: status %d, want %d; body %s", tt.path, rec.Code, tt.want, rec.Body)
-		}
-	}
-}
-
-// failingASDetailsDB wraps a real store and fails every AS details lookup.
-type failingASDetailsDB struct {
-	database.Store
-}
-
-func (failingASDetailsDB) GetASDetailsContext(_ context.Context, _ int) (*database.ASN, []database.LiveRoute, error) {
-	return nil, nil, errors.New("AS details lookup failed")
-}
-
-// TestPrefixDetailShowsOriginNames checks that the prefix page shows each
-// origin AS's handle and description without looking up the AS's details,
-// which also read every route the AS originates. Before the fix the page did
-// that lookup once per origin, so with it failing the names were missing
-// (https://git.eeqj.de/sneak/routewatch/issues/67). The AS path column shows
-// handles too, so the test looks for the origin list's "(handle)" form.
-func TestPrefixDetailShowsOriginNames(t *testing.T) {
-	db, err := database.New(&config.Config{StateDir: t.TempDir()}, logger.New())
-	if err != nil {
-		t.Fatalf("database.New: %v", err)
-	}
-	t.Cleanup(func() { _ = db.Close() })
-
-	ts := time.Date(2026, 1, 2, 3, 4, 5, 0, time.UTC)
-	origins := []int{15169, 13335}
-	for _, asn := range origins {
-		if _, err := db.GetOrCreateASN(asn, ts); err != nil {
-			t.Fatalf("GetOrCreateASN(%d): %v", asn, err)
-		}
-	}
-	if err := db.UpsertLiveRouteBatch([]*database.LiveRoute{
-		{
-			ID: uuid.New(), Prefix: "192.0.2.0/24", MaskLength: 24, IPVersion: 4,
-			OriginASN: origins[0], PeerIP: "198.51.100.1", ASPath: []int{origins[0]}, NextHop: "198.51.100.1",
-			LastUpdated: ts,
-		},
-		{
-			ID: uuid.New(), Prefix: "192.0.2.0/24", MaskLength: 24, IPVersion: 4,
-			OriginASN: origins[1], PeerIP: "198.51.100.2", ASPath: []int{origins[1]}, NextHop: "198.51.100.2",
-			LastUpdated: ts,
-		},
-	}); err != nil {
-		t.Fatalf("UpsertLiveRouteBatch: %v", err)
-	}
-
-	s := New(failingASDetailsDB{db}, streamer.New(logger.New(), metrics.New()), logger.New(), &config.Config{})
-	rec := httptest.NewRecorder()
-	s.router.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/prefix/192.0.2.0/24", nil))
-	if rec.Code != http.StatusOK {
-		t.Fatalf("status %d, want %d; body %s", rec.Code, http.StatusOK, rec.Body)
-	}
-
-	page := rec.Body.String()
-	for _, asn := range origins {
-		info, ok := asinfo.Get(asn)
-		if !ok {
-			t.Fatalf("AS%d is not in the AS info data", asn)
-		}
-		if want := "(" + html.EscapeString(info.Handle) + ")"; !strings.Contains(page, want) {
-			t.Errorf("page does not show AS%d's handle %q", asn, want)
-		}
-		if want := html.EscapeString(info.Description); !strings.Contains(page, want) {
-			t.Errorf("page does not show AS%d's description %q", asn, want)
-		}
-	}
-}
-
 // settledGoroutineCount lets transient goroutines finish, then reports the
 // current count.
 func settledGoroutineCount() int {

internal/server/server.go

@@ -3,8 +3,6 @@ package server
 
 import (
 	"context"
-	"fmt"
-	"net"
 	"net/http"
 	"strconv"
 	"time"
@@ -55,12 +53,9 @@ func New(db database.Store, streamer *streamer.Streamer, logger *logger.Logger,
 	return s
 }
 
-// Start listens on the configured port and serves HTTP in the background.
-// It returns an error if it cannot listen, for example because the port is
-// already in use.
+// Start starts the HTTP server
 func (s *Server) Start() error {
 	const (
-		network           = "tcp"
 		readHeaderTimeout = 40 * time.Second
 		readTimeout       = 60 * time.Second
 		writeTimeout      = 60 * time.Second
@@ -78,15 +73,10 @@ func (s *Server) Start() error {
 
 	s.logger.Info("Starting HTTP server", "port", s.port, "addr", s.srv.Addr)
 
-	listener, err := net.Listen(network, s.srv.Addr)
-	if err != nil {
-		return fmt.Errorf("starting HTTP server: %w", err)
-	}
-
-	s.logger.Info("HTTP server listening", "addr", listener.Addr().String())
-
+	// Start in goroutine but log when actually listening
 	go func() {
-		if err := s.srv.Serve(listener); err != nil && err != http.ErrServerClosed {
+		s.logger.Info("HTTP server listening", "addr", s.srv.Addr)
+		if err := s.srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
 			s.logger.Error("HTTP server error", "error", err)
 		}
 	}()

internal/server/server_test.go

@@ -1,33 +0,0 @@
-package server
-
-import (
-	"context"
-	"net"
-	"testing"
-
-	"git.eeqj.de/sneak/routewatch/internal/config"
-	"git.eeqj.de/sneak/routewatch/internal/logger"
-	"git.eeqj.de/sneak/routewatch/internal/metrics"
-	"git.eeqj.de/sneak/routewatch/internal/streamer"
-)
-
-// TestStartFailsWhenPortIsHeld holds a port with a listener of its own and
-// checks that Start on that port returns an error. Before the fix Start
-// listened in a goroutine, only logged the failure and returned nil, so the
-// daemon kept running without its web server.
-func TestStartFailsWhenPortIsHeld(t *testing.T) {
-	held, err := net.Listen("tcp", ":0")
-	if err != nil {
-		t.Fatalf("failed to open the test listener: %v", err)
-	}
-	defer func() { _ = held.Close() }()
-
-	port := held.Addr().(*net.TCPAddr).Port
-	log := logger.New()
-	s := New(nil, streamer.New(log, metrics.New()), log, &config.Config{Port: port})
-	defer func() { _ = s.Stop(context.Background()) }()
-
-	if err := s.Start(); err == nil {
-		t.Fatalf("Start returned nil while port %d was held by another listener", port)
-	}
-}

internal/templates/prefix_detail.html

@@ -283,7 +283,6 @@
                 <div class="origin-item">
                     <a href="/as/{{.ASN}}" class="as-link">AS{{.ASN}}</a>
                     {{if .Handle}} ({{.Handle}}){{end}}
-                    {{if .Description}} {{.Description}}{{end}}
                     <span style="color: #7f8c8d; margin-left: 10px;">{{.PeerCount}} peer{{if ne .PeerCount 1}}s{{end}}</span>
                 </div>
                 {{end}}