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RESOLVED FIXED
212668
Missing WebRTC Metrics in iOS Safari
https://bugs.webkit.org/show_bug.cgi?id=212668
Summary
Missing WebRTC Metrics in iOS Safari
charob
Reported
2020-06-02 16:31:18 PDT
WebRTC getStats API is missing critical metric values in iOS Safari
https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/getStats
Comparing WebRTC metrics from Chrome and iOS Safari there are many missing metrics that are not available in Safari. There is a sample that prints all stats for example available here:
https://webrtc.github.io/samples/src/content/peerconnection/constraints/
For the video "inbound-rtp" type with id RTCInboundRTPVideoStream_..., it is missing the following critical metrics: "kind" "keyFramesDecoded" "totalDecodeTime" "totalInterFrameDelay" "totalSquaredInterFrameDelay" Also missing but not as critical to have: "lastPacketReceivedTimestamp" "headerBytesReceived" "decoderImplementation" "estimatedPlayoutTimestamp" For the audio "inbound-rtp" type with id RTCInboundRTPAudioStream_..., it is missing the following critical metrics: "kind" Also missing but not as critical to have: "estimatedPlayoutTimestamp" "fecPacketsDiscarded" "fecPacketsReceived" "headerBytesReceived" "lastPacketReceivedTimestamp" For the audio "track" type with id RTCMediaStreamTrack_..., it is missing the following critical metrics: "kind" "jitterBufferDelay" "jitterBufferEmittedCount" Also missing but not as critical to have: "concealedSamples" "concealmentEvents" "insertedSamplesForDeceleration" "removedSamplesForAcceleration" "silentConcealedSamples" "totalAudioEnergy" "totalSamplesDuration" "totalSamplesReceived" For the video "track" type with id RTCMediaStreamTrack_..., it is missing the following critical metrics: "kind" "jitterBufferDelay" "jitterBufferEmittedCount" For the transport type with id RTCTransport_0_1, it is missing the following metrics: "dtlsCipher" "dtlsState" "selectedCandidatePairChanges" "srtpCipher" "tlsVersion" Below is an example of metrics returned from Chrome: [ { "bytesReceived": 54184, "bytesSent": 14599, "datachannelid": 1, "id": "RTCDataChannel_1", "label": "messageChannel", "messagesReceived": 22, "messagesSent": 888, "protocol": "", "state": "open", "timestamp": 1589957352309.487, "type": "data-channel" }, { "availableOutgoingBitrate": 300000, "bytesReceived": 1652430303, "bytesSent": 2128818, "consentRequestsSent": 321, "currentRoundTripTime": 0.035, "id": "RTCIceCandidatePair_pNUroWhv_ZdfFPSAc", "localCandidateId": "RTCIceCandidate_pNUroWhv", "nominated": true, "priority": 7926369428982087000, "remoteCandidateId": "RTCIceCandidate_ZdfFPSAc", "requestsReceived": 309, "requestsSent": 1, "responsesReceived": 311, "responsesSent": 309, "state": "succeeded", "timestamp": 1589957352309.487, "totalRoundTripTime": 30.956, "transportId": "RTCTransport_0_1", "type": "candidate-pair", "writable": true }, { "bytesReceived": 9177296, "codecId": "RTCCodec_0_Inbound_111", "estimatedPlayoutTimestamp": 3798946151845, "fecPacketsDiscarded": 0, "fecPacketsReceived": 0, "headerBytesReceived": 761600, "id": "RTCInboundRTPAudioStream_2203124396", "jitter": 0.003, "kind": "audio", "lastPacketReceivedTimestamp": 128419.069, "packetsLost": 810, "packetsReceived": 38080, "ssrc": 2203124396, "timestamp": 1589957352309.487, "trackId": "RTCMediaStreamTrack_receiver_1", "transportId": "RTCTransport_0_1", "type": "inbound-rtp" }, { "bytesReceived": 1576355386, "codecId": "RTCCodec_1_Inbound_125", "decoderImplementation": "ExternalDecoder", "estimatedPlayoutTimestamp": 3798940646910, "firCount": 0, "framesDecoded": 42358, "headerBytesReceived": 28137124, "id": "RTCInboundRTPVideoStream_953546951", "keyFramesDecoded": 69, "kind": "video", "lastPacketReceivedTimestamp": 128419.083, "nackCount": 1197, "packetsLost": 14015, "packetsReceived": 1371017, "pliCount": 132, "ssrc": 953546951, "timestamp": 1589957352309.487, "totalDecodeTime": 196.967, "totalInterFrameDelay": 776.6529999999717, "totalSquaredInterFrameDelay": 166.27712900002587, "trackId": "RTCMediaStreamTrack_receiver_2", "transportId": "RTCTransport_0_1", "type": "inbound-rtp" }, { "audioLevel": 0.10235908078249459, "concealedSamples": 1202746, "concealmentEvents": 236, "detached": false, "ended": false, "id": "RTCMediaStreamTrack_receiver_1", "insertedSamplesForDeceleration": 38876, "jitterBufferDelay": 13059292.8, "jitterBufferEmittedCount": 36538560, "kind": "audio", "remoteSource": true, "removedSamplesForAcceleration": 439913, "silentConcealedSamples": 508944, "timestamp": 1589957352309.487, "totalAudioEnergy": 17.751000586229022, "totalSamplesDuration": 778.1299999994374, "totalSamplesReceived": 37339680, "trackIdentifier": "544e5453-fa2d-4914-afd2-16080d6240ca", "type": "track" }, { "detached": false, "ended": false, "frameHeight": 1080, "frameWidth": 1920, "framesDecoded": 42358, "framesDropped": 1200, "framesReceived": 43887, "id": "RTCMediaStreamTrack_receiver_2", "jitterBufferDelay": 1428.346, "jitterBufferEmittedCount": 42947, "kind": "video", "remoteSource": true, "timestamp": 1589957352309.487, "trackIdentifier": "fefe92b8-d7e5-4577-bf16-136be909f486", "type": "track" }, { "bytesReceived": 1652430303, "bytesSent": 2128818, "dtlsCipher": "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", "dtlsState": "connected", "id": "RTCTransport_0_1", "selectedCandidatePairChanges": 1, "srtpCipher": "AES_CM_128_HMAC_SHA1_80", "timestamp": 1589957352309.487, "tlsVersion": "FEFD", "type": "transport" } ] Below is the metrics returned from Safari: [ { "bytesReceived": 0, "bytesSent": 0, "datachannelid": 1, "id": "RTCDataChannel_1", "label": "messageChannel", "messagesReceived": 0, "messagesSent": 0, "protocol": "", "state": "open", "timestamp": 1589993832656.0002, "type": "data-channel" }, { "availableOutgoingBitrate": 300000, "bytesReceived": 44177732, "bytesSent": 58331, "currentRoundTripTime": 0.037, "id": "RTCIceCandidatePair_HBXVYpSl_DPb1XCeX", "localCandidateId": "RTCIceCandidate_HBXVYpSl", "nominated": true, "priority": 7926369428982087000, "remoteCandidateId": "RTCIceCandidate_DPb1XCeX", "requestsReceived": 12, "requestsSent": 1, "responsesReceived": 12, "responsesSent": 12, "state": "succeeded", "timestamp": 1589993832656.0002, "totalRoundTripTime": 0.533, "transportId": "RTCTransport_0_1", "type": "candidate-pair", "writable": true }, { "bytesReceived": 279170, "codecId": "RTCCodec_1_Inbound_111", "id": "RTCInboundRTPAudioStream_2925745122", "jitter": 0.008, "packetsLost": 1, "packetsReceived": 1069, "qpSum": 0, "ssrc": 2925745122, "timestamp": 1589993832656.0002, "trackId": "RTCMediaStreamTrack_receiver_2", "transportId": "RTCTransport_0_1", "type": "inbound-rtp" }, { "bytesReceived": 42806229, "codecId": "RTCCodec_0_Inbound_98", "firCount": 0, "framesDecoded": 1205, "id": "RTCInboundRTPVideoStream_622671342", "nackCount": 49, "packetsLost": 15, "packetsReceived": 36620, "pliCount": 0, "qpSum": 0, "ssrc": 622671342, "timestamp": 1589993832656.0002, "trackId": "RTCMediaStreamTrack_receiver_1", "transportId": "RTCTransport_0_1", "type": "inbound-rtp" }, { "detached": false, "ended": false, "frameHeight": 1080, "frameWidth": 1920, "framesDecoded": 1205, "framesDropped": 0, "framesReceived": 1206, "id": "RTCMediaStreamTrack_receiver_1", "remoteSource": true, "timestamp": 1589993832656.0002, "trackIdentifier": "270fa8d0-a679-442a-a2c0-90172ff7bc33", "type": "track" }, { "audioLevel": 0.020386364329966124, "detached": false, "ended": false, "id": "RTCMediaStreamTrack_receiver_2", "remoteSource": true, "timestamp": 1589993832656.0002, "trackIdentifier": "0c66a784-d5d1-4557-bd39-9b66a1c9c49e", "type": "track" }, { "bytesReceived": 44177732, "bytesSent": 58331, "id": "RTCTransport_0_1", "timestamp": 1589993832656.0002, "type": "transport" } ]
Attachments
Patch
(6.44 KB, patch)
2020-06-08 06:58 PDT
,
youenn fablet
no flags
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Radar WebKit Bug Importer
Comment 1
2020-06-02 18:21:36 PDT
<
rdar://problem/63902458
>
youenn fablet
Comment 2
2020-06-04 02:47:14 PDT
https://bugs.webkit.org/show_bug.cgi?id=212702
is adding media source stats.
youenn fablet
Comment 3
2020-06-08 06:40:26 PDT
Adding other missing stats at
bug 206645
.
youenn fablet
Comment 4
2020-06-08 06:43:03 PDT
After
bug 206645
, the missing stats will be transport stats: "dtlsCipher" "dtlsState" "selectedCandidatePairChanges" "srtpCipher" "tlsVersion"
youenn fablet
Comment 5
2020-06-08 06:58:30 PDT
Created
attachment 401331
[details]
Patch
EWS
Comment 6
2020-06-08 11:14:23 PDT
Committed
r262728
: <
https://trac.webkit.org/changeset/262728
> All reviewed patches have been landed. Closing bug and clearing flags on
attachment 401331
[details]
.
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