LatencyTracker class

Tracks and calculates latency metrics for WebRTC call establishment.

This class provides detailed timing information for:

  • Registration latency: Time from login to CLIENT_READY
  • Inbound call latency: Time from acceptCall() to first RTP packet
  • Outbound call latency: Time from newInvite() to first RTP packet

Constructors

LatencyTracker()

Properties

hashCode → int
The hash code for this object.
no setterinherited
isTrackingRegistration → bool
Whether registration tracking is currently in progress.
no setter
latencyMetricsStream → Stream<LatencyMetrics>
Stream of latency metrics updates.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

calculateAnswerDelay(String callId) → int?
Calculates the answer delay for inbound calls. This is the time from invite received to user answering.
calculateRemoteAnswerTime(String callId) → int?
Calculates the time for remote side to answer (outbound calls). This is from invite sent to call answered.
cancelCallTracking(String callId) → void
Cancels tracking for a call (e.g., if call fails).
completeCallTracking(String callId) → void
Completes call tracking and emits the final metrics. Call this when the call reaches ACTIVE state.
completeRegistrationTracking() → void
Completes registration tracking and emits metrics. Call this when CLIENT_READY is received.
dispose() → void
Disposes resources.
getCurrentCallMetrics(String callId) → LatencyMetrics?
Gets current metrics snapshot for a call in progress.
markAnswerInitiated(String callId) → void
Marks when the user initiates answering an inbound call. Call this at the start of acceptCall().
markCallAnsweredByRemote(String callId) → void
Marks when the remote side answers the call (outbound calls). Call this when SIP 200 OK or equivalent is received.
markCallMilestone(String callId, String milestone) → void
Records a milestone for a specific call.
markFirstRtp(String callId, {bool isSent = false}) → void
Marks when the first RTP packet is sent or received.
markFirstSrflxRelayCandidate(String callId, String candidateType) → void
Marks when the first server-reflexive or relay ICE candidate is found.
markInviteReceived(String callId) → void
Marks when an inbound call invite is received. Call this when the invite arrives, before user answers.
markMediaDevicesAcquired(String callId) → void
Marks when media devices (microphone/camera) are acquired.
markPeerSetupComplete(String callId) → void
Marks when peer setup is complete.
markRegistrationMilestone(String milestone) → void
Records a milestone during registration.
markRemoteRinging(String callId) → void
Marks when the remote side starts ringing (outbound calls). Call this when SIP 180 Ringing or equivalent is received.
markSdpNegotiationStarted(String callId) → void
Marks when SDP negotiation starts (createOffer/createAnswer).
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reset() → void
Clears all tracking state.
setLatencyMetricsListener(LatencyMetricsCallback? listener) → void
Sets the callback for latency metrics updates.
startCallTracking(String callId, {bool isOutbound = false}) → void
Starts tracking latency for a new call. callId The unique identifier for the call. isOutbound True for outbound calls, false for inbound.
startRegistrationTracking() → void
Starts tracking registration latency. Call this when login/connect is initiated.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited