From bf777e65132e393aa286bccf0463d6fd8c6d31be Mon Sep 17 00:00:00 2001
From: Raja Subramanian <raja.gobi@tutanota.com>
Date: Sun, 5 Jul 2026 16:08:10 +0530
Subject: [PATCH] Make IsConnectionCanceled available at LocalParticipant
 interface. (#4643)

Can be used to keep track of pariticpants failing connection in a room
by checking this when room closes the participant.
---
 pkg/rtc/participant.go                        | 14 ++--
 pkg/rtc/types/interfaces.go                   |  1 +
 .../typesfakes/fake_local_participant.go      | 72 +++++++++++++++++++
 3 files changed, 82 insertions(+), 5 deletions(-)

diff --git a/pkg/rtc/participant.go b/pkg/rtc/participant.go
index 915a7022e..780deea9c 100644
--- a/pkg/rtc/participant.go
+++ b/pkg/rtc/participant.go
@@ -1427,19 +1427,23 @@ func (p *ParticipantImpl) IsReconnect() bool {
 }
 
 func (p *ParticipantImpl) maybeRecordRTCanceled(closeReason types.ParticipantCloseReason) {
-	if p.State() >= livekit.ParticipantInfo_ACTIVE {
+	if p.HasConnected() {
 		return
 	}
 
-	if closeReason == types.ParticipantCloseReasonClientRequestLeave ||
+	if p.IsConnectionCanceled(closeReason) {
+		prometheus.IncrementParticipantRtcCanceled(1)
+	}
+}
+
+func (p *ParticipantImpl) IsConnectionCanceled(closeReason types.ParticipantCloseReason) bool {
+	return closeReason == types.ParticipantCloseReasonClientRequestLeave ||
 		closeReason == types.ParticipantCloseReasonDuplicateIdentity ||
 		closeReason == types.ParticipantCloseReasonRoomClosed ||
 		closeReason == types.ParticipantCloseReasonMigrationRequested ||
 		closeReason == types.ParticipantCloseReasonMigrationComplete ||
 		// client closing signal connection too quickly, there is a time check to handle clients timing out and leaving without sending a leave message
-		(time.Since(p.params.SessionStartTime) < 3*time.Second && closeReason == types.ParticipantCloseReasonSignalSourceClose) {
-		prometheus.IncrementParticipantRtcCanceled(1)
-	}
+		(time.Since(p.params.SessionStartTime) < 3*time.Second && closeReason == types.ParticipantCloseReasonSignalSourceClose)
 }
 
 func (p *ParticipantImpl) Close(sendLeave bool, reason types.ParticipantCloseReason, isExpectedToResume bool) error {
diff --git a/pkg/rtc/types/interfaces.go b/pkg/rtc/types/interfaces.go
index 5d0c702ed..c47802ce5 100644
--- a/pkg/rtc/types/interfaces.go
+++ b/pkg/rtc/types/interfaces.go
@@ -414,6 +414,7 @@ type LocalParticipant interface {
 	IsReady() bool
 	ActiveAt() time.Time
 	Disconnected() <-chan struct{}
+	IsConnectionCanceled(closeReason ParticipantCloseReason) bool
 	IsIdle() bool
 	SubscriberAsPrimary() bool
 	GetClientInfo() *livekit.ClientInfo
diff --git a/pkg/rtc/types/typesfakes/fake_local_participant.go b/pkg/rtc/types/typesfakes/fake_local_participant.go
index d4198c2de..b7461f9ff 100644
--- a/pkg/rtc/types/typesfakes/fake_local_participant.go
+++ b/pkg/rtc/types/typesfakes/fake_local_participant.go
@@ -841,6 +841,17 @@ type FakeLocalParticipant struct {
 	isClosedReturnsOnCall map[int]struct {
 		result1 bool
 	}
+	IsConnectionCanceledStub        func(types.ParticipantCloseReason) bool
+	isConnectionCanceledMutex       sync.RWMutex
+	isConnectionCanceledArgsForCall []struct {
+		arg1 types.ParticipantCloseReason
+	}
+	isConnectionCanceledReturns struct {
+		result1 bool
+	}
+	isConnectionCanceledReturnsOnCall map[int]struct {
+		result1 bool
+	}
 	IsDependentStub        func() bool
 	isDependentMutex       sync.RWMutex
 	isDependentArgsForCall []struct {
@@ -5946,6 +5957,67 @@ func (fake *FakeLocalParticipant) IsClosedReturnsOnCall(i int, result1 bool) {
 	}{result1}
 }
 
+func (fake *FakeLocalParticipant) IsConnectionCanceled(arg1 types.ParticipantCloseReason) bool {
+	fake.isConnectionCanceledMutex.Lock()
+	ret, specificReturn := fake.isConnectionCanceledReturnsOnCall[len(fake.isConnectionCanceledArgsForCall)]
+	fake.isConnectionCanceledArgsForCall = append(fake.isConnectionCanceledArgsForCall, struct {
+		arg1 types.ParticipantCloseReason
+	}{arg1})
+	stub := fake.IsConnectionCanceledStub
+	fakeReturns := fake.isConnectionCanceledReturns
+	fake.recordInvocation("IsConnectionCanceled", []interface{}{arg1})
+	fake.isConnectionCanceledMutex.Unlock()
+	if stub != nil {
+		return stub(arg1)
+	}
+	if specificReturn {
+		return ret.result1
+	}
+	return fakeReturns.result1
+}
+
+func (fake *FakeLocalParticipant) IsConnectionCanceledCallCount() int {
+	fake.isConnectionCanceledMutex.RLock()
+	defer fake.isConnectionCanceledMutex.RUnlock()
+	return len(fake.isConnectionCanceledArgsForCall)
+}
+
+func (fake *FakeLocalParticipant) IsConnectionCanceledCalls(stub func(types.ParticipantCloseReason) bool) {
+	fake.isConnectionCanceledMutex.Lock()
+	defer fake.isConnectionCanceledMutex.Unlock()
+	fake.IsConnectionCanceledStub = stub
+}
+
+func (fake *FakeLocalParticipant) IsConnectionCanceledArgsForCall(i int) types.ParticipantCloseReason {
+	fake.isConnectionCanceledMutex.RLock()
+	defer fake.isConnectionCanceledMutex.RUnlock()
+	argsForCall := fake.isConnectionCanceledArgsForCall[i]
+	return argsForCall.arg1
+}
+
+func (fake *FakeLocalParticipant) IsConnectionCanceledReturns(result1 bool) {
+	fake.isConnectionCanceledMutex.Lock()
+	defer fake.isConnectionCanceledMutex.Unlock()
+	fake.IsConnectionCanceledStub = nil
+	fake.isConnectionCanceledReturns = struct {
+		result1 bool
+	}{result1}
+}
+
+func (fake *FakeLocalParticipant) IsConnectionCanceledReturnsOnCall(i int, result1 bool) {
+	fake.isConnectionCanceledMutex.Lock()
+	defer fake.isConnectionCanceledMutex.Unlock()
+	fake.IsConnectionCanceledStub = nil
+	if fake.isConnectionCanceledReturnsOnCall == nil {
+		fake.isConnectionCanceledReturnsOnCall = make(map[int]struct {
+			result1 bool
+		})
+	}
+	fake.isConnectionCanceledReturnsOnCall[i] = struct {
+		result1 bool
+	}{result1}
+}
+
 func (fake *FakeLocalParticipant) IsDependent() bool {
 	fake.isDependentMutex.Lock()
 	ret, specificReturn := fake.isDependentReturnsOnCall[len(fake.isDependentArgsForCall)]