peer: report direct-sharing relayed bytes in a snapshot

backend/peer_share.go

@@ -22,6 +22,7 @@ type peerController interface {
 	Stop(ctx context.Context) error
 	IsActive() bool
 	CurrentStatus() peer.Status
+	RelaySnapshot() peer.Snapshot
 }
 
 // peerToggleTimeout caps blocking time on a slow router; UPnP M-SEARCH +
@@ -197,3 +198,13 @@ func (r *LocalBackend) PeerStatus() peer.Status {
 	}
 	return r.peerClient.CurrentStatus()
 }
+
+// PeerRelaySnapshot returns the bytes the current or most recent direct-sharing
+// session has relayed, for the IPC /peer/snapshot endpoint. A nil peerClient
+// reports an empty snapshot, as PeerStatus does.
+func (r *LocalBackend) PeerRelaySnapshot() peer.Snapshot {
+	if r.peerClient == nil {
+		return peer.Snapshot{Peers: []string{}, PeerBytes: []peer.PeerBytes{}}
+	}
+	return r.peerClient.RelaySnapshot()
+}

backend/radiance_test.go

@@ -398,8 +398,9 @@ func (f *fakePeerController) Stop(_ context.Context) error {
 	return nil
 }
 
-func (f *fakePeerController) IsActive() bool             { return f.active.Load() }
-func (f *fakePeerController) CurrentStatus() peer.Status { return peer.Status{Active: f.active.Load()} }
+func (f *fakePeerController) IsActive() bool               { return f.active.Load() }
+func (f *fakePeerController) CurrentStatus() peer.Status   { return peer.Status{Active: f.active.Load()} }
+func (f *fakePeerController) RelaySnapshot() peer.Snapshot { return peer.Snapshot{} }
 
 // newPeerTestBackend wires a minimal LocalBackend with only the fields
 // applyPeerShare touches. settings is initialized to a fresh tempdir per test
@@ -699,8 +700,9 @@ func (f *slowStartFake) Stop(_ context.Context) error {
 	f.active.Store(false)
 	return nil
 }
-func (f *slowStartFake) IsActive() bool             { return f.active.Load() }
-func (f *slowStartFake) CurrentStatus() peer.Status { return peer.Status{Active: f.active.Load()} }
+func (f *slowStartFake) IsActive() bool               { return f.active.Load() }
+func (f *slowStartFake) CurrentStatus() peer.Status   { return peer.Status{Active: f.active.Load()} }
+func (f *slowStartFake) RelaySnapshot() peer.Snapshot { return peer.Snapshot{} }
 
 // newCloseableTestBackend mirrors newPeerTestBackend but provides the fields
 // Close needs (closeOnce, cancel) so we can exercise the shutdown path

go.mod

@@ -4,7 +4,7 @@ go 1.26.9
 
 // replace github.com/sagernet/sing => github.com/getlantern/sing v0.7.18-lantern
 
-replace github.com/sagernet/sing-box => github.com/getlantern/sing-box-minimal v1.13.20-0.20261017021932-5a256d757969
+replace github.com/sagernet/sing-box => github.com/getlantern/sing-box-minimal v1.13.20-0.20261019115333-624aa48e0252
 
 // replace github.com/sagernet/wireguard-go => github.com/getlantern/wireguard-go v0.0.1-beta.7.0.20251208214020-d78e69f1eff4
 
@@ -40,7 +40,7 @@ require (
 	github.com/getlantern/common v1.2.1-0.20260910154003-08e030318f24
 	github.com/getlantern/domainfront v0.0.0-20260915172349-4984689a8667
 	github.com/getlantern/kindling v0.0.0-20261014210827-0f4a89dbe1ee
-	github.com/getlantern/lantern-box v0.0.154
+	github.com/getlantern/lantern-box v0.0.166-0.20261019183056-40233a904dcc
 	github.com/getlantern/pluriconfig v0.0.0-20251126214241-8cc8bc561535
 	github.com/getlantern/publicip v0.0.0-20260328175246-2c460fe80c6b
 	github.com/getlantern/semconv v0.0.0-20261011133221-f5e57ec9c1c5
@@ -126,7 +126,7 @@ require (
 	github.com/getlantern/algeneva v0.0.0-20260731172949-952f13725b7b // indirect
 	github.com/getlantern/keepcurrent v0.0.0-20261009194109-22f33eaeac6e // indirect
 	github.com/getlantern/lantern-water v0.0.0-20260520145825-958775d51395 // indirect
-	github.com/getlantern/samizdat v0.0.3-0.20260819153658-ebc74116a064 // indirect
+	github.com/getlantern/samizdat v0.0.3-0.20261019142234-18bd41c612f1 // indirect
 	github.com/getlantern/twiddle v0.0.0-20260914204124-f698a0d67d2f // indirect
 	github.com/go-chi/chi/v5 v5.2.5 // indirect
 	github.com/go-json-experiment/json v0.0.0-20250813024750-ebf49471dced // indirect

go.sum

@@ -249,8 +249,8 @@ github.com/getlantern/keepcurrent v0.0.0-20261009194109-22f33eaeac6e h1:iJfNXnhg
 github.com/getlantern/keepcurrent v0.0.0-20261009194109-22f33eaeac6e/go.mod h1:ag5g9aWUw2FJcX5RVRpJ9EBQBy5yJuy2WXDouIn/m4w=
 github.com/getlantern/kindling v0.0.0-20261014210827-0f4a89dbe1ee h1:FXod6NjAD/KDl6Aj5mP1MVCLf2AAJv8qU4kmUrYcMZk=
 github.com/getlantern/kindling v0.0.0-20261014210827-0f4a89dbe1ee/go.mod h1:98jp1v8UyXJRGn8slpvzNz2tKnyzvSqtlVYkQ+kYapQ=
-github.com/getlantern/lantern-box v0.0.154 h1:EPQjjBqNC1gbDb2SlpbWg1wo7pNM/TccZ/UV+yhVQjI=
-github.com/getlantern/lantern-box v0.0.154/go.mod h1:gy3dGHMTQXaFi5DYIJJrMNT3WS2E7GOxuZl2jebcbuw=
+github.com/getlantern/lantern-box v0.0.166-0.20261019183056-40233a904dcc h1:2e5iz37jcWhubxK214Rz/zaZfwPNU/1X2P+GZKI+dNA=
+github.com/getlantern/lantern-box v0.0.166-0.20261019183056-40233a904dcc/go.mod h1:RK7qWraZxaDGC6iJYJV6KEUyQvOy2njF5iEENZ1bl/k=
 github.com/getlantern/lantern-water v0.0.0-20260520145825-958775d51395 h1:grfGavAUp2E9w9ZoJuM3FyWyQ0sCJ64V4ZMKtZKRqTc=
 github.com/getlantern/lantern-water v0.0.0-20260520145825-958775d51395/go.mod h1:3JpJgwi4KEI6rS9loOAvcBp+F2jP65d0tTg2GQcTPBU=
 github.com/getlantern/ops v0.0.0-20231025133620-f368ab734534 h1:3BwvWj0JZzFEvNNiMhCu4bf60nqcIuQpTYb00Ezm1ag=
@@ -261,12 +261,12 @@ github.com/getlantern/pluriconfig v0.0.0-20251126214241-8cc8bc561535 h1:rtDmW8YL
 github.com/getlantern/pluriconfig v0.0.0-20251126214241-8cc8bc561535/go.mod h1:WKJEdjMOD4IuTRYwjQHjT4bmqDl5J82RShMLxPAvi0Q=
 github.com/getlantern/publicip v0.0.0-20260328175246-2c460fe80c6b h1:gMYJzEhLrmIqQ+JnjiYNm+UyUDalK3WUmVyecFwmV5g=
 github.com/getlantern/publicip v0.0.0-20260328175246-2c460fe80c6b/go.mod h1:NpfXdK4ldEKkjQ4P1R+DBF4ua5VFOlxmgHROTnYrApg=
-github.com/getlantern/samizdat v0.0.3-0.20260819153658-ebc74116a064 h1:NhCyQAWGEWjok/jg4gRD6fzCZvyOQy/4dVSFYhzU5xk=
-github.com/getlantern/samizdat v0.0.3-0.20260819153658-ebc74116a064/go.mod h1:uEeykQSW2/6rTjfPlj3MTTo59poSHXfAHTGgzYDkbr0=
+github.com/getlantern/samizdat v0.0.3-0.20261019142234-18bd41c612f1 h1:Q1AHHHTd3eiHXn0HR0mltq6/4cGnv9cQFKYmoRuXWQo=
+github.com/getlantern/samizdat v0.0.3-0.20261019142234-18bd41c612f1/go.mod h1:uEeykQSW2/6rTjfPlj3MTTo59poSHXfAHTGgzYDkbr0=
 github.com/getlantern/semconv v0.0.0-20261011133221-f5e57ec9c1c5 h1:oF5kQTI7RwMvjMnr4WhmQ1beAjSMl1zoQ4I7Cx5nm6I=
 github.com/getlantern/semconv v0.0.0-20261011133221-f5e57ec9c1c5/go.mod h1:GkPT5P9JoOTIRXRmFWxYgu1hhXgTFFTNc2hoG7WQc3g=
-github.com/getlantern/sing-box-minimal v1.13.20-0.20261017021932-5a256d757969 h1:xDlY1aEy5FILPxlncY5ciHQQY5FdyiNNZ2RC86ACfsw=
-github.com/getlantern/sing-box-minimal v1.13.20-0.20261017021932-5a256d757969/go.mod h1:4E8WvF7Vi60N1NtPw1CeG994J/yiJZZkty5dKKwG+V0=
+github.com/getlantern/sing-box-minimal v1.13.20-0.20261019115333-624aa48e0252 h1:p6tbxiX1SHqo1FwO9l1uYerSSaMLt/R78QtLIScpP54=
+github.com/getlantern/sing-box-minimal v1.13.20-0.20261019115333-624aa48e0252/go.mod h1:4E8WvF7Vi60N1NtPw1CeG994J/yiJZZkty5dKKwG+V0=
 github.com/getlantern/soar v0.2.3 h1:BAahWy3b4J6wtrAJD7WgoO2O+x2Q3T6KN2r0E3ogNgs=
 github.com/getlantern/soar v0.2.3/go.mod h1:6T2+Kbx0GVqYIHqfEaUqlYI5ZRRVZYYhuoMWcxHC+xA=
 github.com/getlantern/twiddle v0.0.0-20260914204124-f698a0d67d2f h1:8WL/o8hKl27jpHunB4nO5dJZKSTfyMwvS7J72ix6vqQ=

ipc/client.go

@@ -111,6 +111,14 @@ func (c *Client) PeerStatus(ctx context.Context) (peer.Status, error) {
 	return status, err
 }
 
+// PeerRelaySnapshot reads the bytes the current or most recent direct-sharing
+// session has relayed, in the shape of UnboundedSnapshot.
+func (c *Client) PeerRelaySnapshot(ctx context.Context) (peer.Snapshot, error) {
+	var s peer.Snapshot
+	err := c.doJSON(ctx, http.MethodGet, peerSnapshotEndpoint, nil, &s)
+	return s, err
+}
+
 /////////////
 //   VPN   //
 /////////////

ipc/server.go

@@ -81,6 +81,7 @@ const (
 	peerStatusEndpoint           = "/peer/status"
 	peerStatusEventsEndpoint     = "/peer/status/events"
 	peerConnectionEventsEndpoint = "/peer/connection/events"
+	peerSnapshotEndpoint         = "/peer/snapshot"
 
 	// Unbounded ("Basic mode") endpoints. Connection events have the same
 	// JSON shape as /peer/connection/events but are emitted from a
@@ -276,6 +277,9 @@ func newLocalAPI(b *backend.LocalBackend, withAuth bool) *localapi {
 	// SSE skips the tracer middleware since it buffers the entire response body.
 	mux.HandleFunc("GET "+peerStatusEventsEndpoint, s.peerStatusEventsHandler)
 	mux.HandleFunc("GET "+peerConnectionEventsEndpoint, s.peerConnectionEventsHandler)
+	mux.HandleFunc("GET "+peerSnapshotEndpoint, traced(func(w http.ResponseWriter, r *http.Request) {
+		writeJSON(w, http.StatusOK, s.backend(r.Context()).PeerRelaySnapshot())
+	}))
 	mux.HandleFunc("GET "+unboundedConnectionEventsEndpoint, s.unboundedConnectionEventsHandler)
 
 	mux.HandleFunc("GET "+unboundedSnapshotEndpoint, traced(func(w http.ResponseWriter, r *http.Request) {

peer/peer.go

@@ -203,6 +203,14 @@ type Client struct {
 	// streams over one TCP conn, so several can share a source. Guarded by
 	// connsMu.
 	verifierConns map[string]int
+	// verifierCounters holds the byte counters of open verifier streams. When
+	// events carry a counter it identifies the stream, so a close is hidden
+	// exactly when its own accept was; verifierConns is the fallback for
+	// events without one. Guarded by connsMu.
+	verifierCounters map[*peerconn.Counter]struct{}
+
+	// relay totals the bytes each session relays, for RelaySnapshot.
+	relay relayStats
 
 	// rejections tallies destinations refused by reject rules, across
 	// sessions, so allowlist gaps are visible. Flushed on each heartbeat and
@@ -330,6 +338,7 @@ func (c *Client) Start(ctx context.Context) (retErr error) {
 	// silence the disconnect cascade during box.Close; if we don't reset
 	// here, a Stop→Start cycle would leave the wrapper permanently muted.
 	c.listenerDraining.Store(false)
+	relayGen := c.relay.begin()
 
 	var (
 		success   bool
@@ -362,6 +371,7 @@ func (c *Client) Start(ctx context.Context) (retErr error) {
 		c.listenerDraining.Store(true)
 		peerconn.SetListener(nil)
 		c.resetConnTracking()
+		c.relay.end()
 		if box != nil {
 			_ = c.closeBox(box)
 		}
@@ -520,14 +530,15 @@ func (c *Client) Start(ctx context.Context) (retErr error) {
 		if evt.Rejected {
 			c.rejections.record(evt.Destination)
 		}
-		if c.isVerifierConn(state, source, evt.Destination) {
+		if c.isVerifierConn(state, source, evt.Destination, evt.Bytes) {
 			slog.Debug("peer listener: hiding verifier connection",
 				"state", state, "source", source)
 			return
 		}
 		slog.Debug("peer listener: forwarding connection event",
 			"state", state, "source", source)
 		c.trackConn(state, source)
+		c.relay.recordFor(relayGen, state, source, evt.Bytes)
 		events.Emit(ConnectionEvent{State: state, Source: source, Timestamp: time.Now().UnixMilli()})
 	})
 	slog.Info("peer listener: registered with peerconn", "route_id", regResp.RouteID)
@@ -700,6 +711,7 @@ func (c *Client) stopHeld(ctx context.Context, target stopTarget) (bool, error)
 	c.listenerDraining.Store(true)
 	peerconn.SetListener(nil)
 	c.resetConnTracking()
+	c.relay.end()
 
 	cancel()
 	<-done
@@ -833,6 +845,7 @@ func (c *Client) resetConnTracking() {
 	defer c.connsMu.Unlock()
 	c.connsByIP = nil
 	c.verifierConns = nil
+	c.verifierCounters = nil
 }
 
 // verifierCallbackHosts are the hosts lantern-cloud's verifier fetches through
@@ -844,11 +857,12 @@ var verifierCallbackHosts = []string{"api.iantem.io", "api.staging.iantem.io"}
 // isVerifierConn reports whether a connection event belongs to lantern-cloud's
 // verifier, which re-verifies serving peers too, so that it is neither shown
 // as a person helped nor reported to the server as a client. An accept is
-// matched by destination. A close carries no destination, so each hidden
-// accept hides one later close from the same source. When ordinary and
-// verifier streams share a source, which close is hidden may not be the
-// verifier's own, but the per-IP totals still balance.
-func (c *Client) isVerifierConn(state int, source, destination string) bool {
+// matched by destination. A close carries no destination, so it is matched by
+// its byte counter, which identifies the stream. Without a counter, each
+// hidden accept hides one later close from the same source; when ordinary and
+// verifier streams share a source that may not be the verifier's own close,
+// but the per-IP totals still balance.
+func (c *Client) isVerifierConn(state int, source, destination string, bytes *peerconn.Counter) bool {
 	c.connsMu.Lock()
 	defer c.connsMu.Unlock()
 	// Same reason as trackConn: a late accept must not repopulate the set
@@ -857,6 +871,13 @@ func (c *Client) isVerifierConn(state int, source, destination string) bool {
 		return false
 	}
 	if state < 0 {
+		if bytes != nil {
+			if _, ok := c.verifierCounters[bytes]; !ok {
+				return false
+			}
+			delete(c.verifierCounters, bytes)
+			return true
+		}
 		n := c.verifierConns[source]
 		if n == 0 {
 			return false
@@ -877,6 +898,13 @@ func (c *Client) isVerifierConn(state int, source, destination string) bool {
 	}) {
 		return false
 	}
+	if bytes != nil {
+		if c.verifierCounters == nil {
+			c.verifierCounters = make(map[*peerconn.Counter]struct{})
+		}
+		c.verifierCounters[bytes] = struct{}{}
+		return true
+	}
 	if c.verifierConns == nil {
 		c.verifierConns = make(map[string]int)
 	}

peer/peer_test.go

@@ -1236,17 +1236,17 @@ func TestTrackConn_IgnoresUnmatchedClose(t *testing.T) {
 func TestIsVerifierConn_PairsCloseWithAccept(t *testing.T) {
 	c := &Client{}
 
-	assert.True(t, c.isVerifierConn(1, "35.233.177.182:33792", "api.iantem.io:443"))
-	assert.True(t, c.isVerifierConn(1, "35.233.177.183:1000", "API.staging.iantem.io:443"))
-	assert.False(t, c.isVerifierConn(1, "35.233.177.182:33793", "google.com:443"))
+	assert.True(t, c.isVerifierConn(1, "35.233.177.182:33792", "api.iantem.io:443", nil))
+	assert.True(t, c.isVerifierConn(1, "35.233.177.183:1000", "API.staging.iantem.io:443", nil))
+	assert.False(t, c.isVerifierConn(1, "35.233.177.182:33793", "google.com:443", nil))
 
-	assert.True(t, c.isVerifierConn(-1, "35.233.177.182:33792", ""))
-	assert.False(t, c.isVerifierConn(-1, "35.233.177.182:33792", ""),
+	assert.True(t, c.isVerifierConn(-1, "35.233.177.182:33792", "", nil))
+	assert.False(t, c.isVerifierConn(-1, "35.233.177.182:33792", "", nil),
 		"a second close for the same source is not the verifier's")
-	assert.False(t, c.isVerifierConn(-1, "35.233.177.182:33793", ""))
+	assert.False(t, c.isVerifierConn(-1, "35.233.177.182:33793", "", nil))
 
 	c.resetConnTracking()
-	assert.False(t, c.isVerifierConn(-1, "35.233.177.183:1000", ""),
+	assert.False(t, c.isVerifierConn(-1, "35.233.177.183:1000", "", nil),
 		"a reset forgets verifier connections from the old session")
 }