Bug 266669 – REGRESSION(271863@main): imported/w3c/web-platform-tests/webrtc-extensions/RTCRtpSynchronizationSource-captureTimestamp.html is a flaky text failure

• Component: WebRTC
• Status: RESOLVED FIXED

[Robert Jenner]

imported/w3c/web-platform-tests/webrtc-extensions/RTCRtpSynchronizationSource-captureTimestamp.html

is a flaky text failure on Monterey and higher, as well as on iOS 17. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebrtc-extensions%2FRTCRtpSynchronizationSource-captureTimestamp.html

DIFF URL:
https://build.webkit.org/results/Apple-iOS-17-Simulator-Release-WK2-Tests/272281@main%20(1197)/imported/w3c/web-platform-tests/webrtc-extensions/RTCRtpSynchronizationSource-captureTimestamp-pretty-diff.html

TEXT DIFF:
+++ /Volumes/Data/worker/Apple-iOS-17-Simulator-Release-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/webrtc-extensions/RTCRtpSynchronizationSource-captureTimestamp-actual.txt
@@ -1,4 +1,6 @@
 
+
+Harness Error (FAIL), message = Unhandled rejection: Failed to set local offer sdp: A BUNDLE group contains a codec collision for header extension id=5. The id must be the same across all bundled media descriptions
 
 PASS [audio] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is not offered
 PASS [audio] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is offered, but not answered
@@ -6,5 +8,15 @@
 PASS [video] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is not offered
 PASS [video] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is offered, but not answered
 FAIL [video] getSynchronizationSources() should contain captureTimestamp if absolute capture time RTP header extension is negotiated step_wait_func: No abs-capture-time capture time header extension. Timed out waiting on condition
-FAIL Audio and video RTCRtpSynchronizationSource.captureTimestamp are comparable step_wait_func: No abs-capture-time capture time header extension. Timed out waiting on condition
+TIMEOUT Audio and video RTCRtpSynchronizationSource.captureTimestamp are comparable Test timed out
 
+Harness Error (FAIL), message = Unhandled rejection: Failed to set local offer sdp: A BUNDLE group contains a codec collision for header extension id=5. The id must be the same across all bundled media descriptions
+
+PASS [audio] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is not offered
+PASS [audio] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is offered, but not answered
+FAIL [audio] getSynchronizationSources() should contain captureTimestamp if absolute capture time RTP header extension is negotiated step_wait_func: No abs-capture-time capture time header extension. Timed out waiting on condition
+PASS [video] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is not offered
+PASS [video] getSynchronizationSources() should not contain captureTimestamp if absolute capture time RTP header extension is offered, but not answered
+FAIL [video] getSynchronizationSources() should contain captureTimestamp if absolute capture time RTP header extension is negotiated step_wait_func: No abs-capture-time capture time header extension. Timed out waiting on condition
+TIMEOUT Audio and video RTCRtpSynchronizationSource.captureTimestamp are comparable Test timed out
+

[Radar WebKit Bug Importer]

<rdar://problem/119899602>

[Robert Jenner]

I was able to reproduce this failure at iOS 17 ToT running the test as follows:


run-webkit-tests --iOS-simulator imported/w3c/web-platform-tests/webrtc-extensions/RTCRtpSynchronizationSource-captureTimestamp.html --iterations 10.


It looks like there's a fairly easily tradable regression point at https://commits.webkit.org/271863@main

[EWS]

Test gardening commit 272312@main (ccbbc011cb23): <https://commits.webkit.org/272312@main>

Reviewed commits have been landed. Closing PR #22075 and removing active labels.

[youenn fablet]

*** This bug has been marked as a duplicate of bug 269088 ***

[EWS]

Committed 275963@main (ee8def8950ff): <https://commits.webkit.org/275963@main>

Reviewed commits have been landed. Closing PR #25715 and removing active labels.