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conformance · v150

v150 · webrtc-diagnostic-logging-api — conformance probe

9 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: … spec: https://w3c.github.io/webrtc-extensions/#diagnostic-logging chromestatus: #5091582546149376 generated 2026-10-06T10:30:00Z by fleet-hardening-lane
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pass
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fail
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blocked
9
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id contract kind verdict detail
pco-start-static-method RTCPeerConnection.startDiagnosticLogging is a static function — the rewritten surface moved the API off navigator.rtc onto the RTCPeerConnection interface. spec ↗ typeof …
pco-stop-static-method RTCPeerConnection.stopDiagnosticLogging is a static function — the rewrite renamed the finalising method from finishDiagnosticLogging to stopDiagnosticLogging. spec ↗ typeof …
pco-cancel-static-method RTCPeerConnection.cancelDiagnosticLogging is a static function — the rewrite keeps cancelDiagnosticLogging as the discard method. spec ↗ typeof …
legacy-navigator-rtc-removed The pre-rewrite Navigator binding is gone: navigator.rtc must not exist on the current surface (the API lives only as RTCPeerConnection statics). spec ↗ script …
start-returns-session-id-synchronously startDiagnosticLogging() returns a non-empty session-ID string synchronously (a DOMString, never a Promise), and a session started this way is closed with stopDiagnosticLogging(). spec ↗ script …
start-while-active-throws-invalid-state Calling startDiagnosticLogging() while a session is already active throws InvalidStateError (the spec's first of three InvalidStateError contracts). spec ↗ script …
stop-while-idle-throws-invalid-state Calling stopDiagnosticLogging() with no active session throws InvalidStateError (the spec's second InvalidStateError contract). spec ↗ script …
cancel-while-idle-throws-invalid-state Calling cancelDiagnosticLogging() with no active session throws InvalidStateError (the spec's third InvalidStateError contract). spec ↗ script …
metadata-over-limit-throws-type-error startDiagnosticLogging() with more than 5 metadata entries, or with any key/value longer than 100 characters, throws a TypeError before any session starts (the rewrite made this a synchronous throw, and dropped allowUpload). spec ↗ script …