WPT
wpt / webrtc-extensions / RTCConfiguration-alwaysNegotiateDataChannels.html
Spec: https://w3c.github.io/webrtc-extensions/ ↗
Runs: Chrome 155.0.8039.0 (wpt@a4fcd77aa, 2026-09-03) | Firefox 157.0a1 (wpt@cc4d45aa0, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@47d833bbc, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 9/11 | 11/11 | 1/11 | 0/11 | 0/11 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| alwaysNegotiateDataChannels defaults to false | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels is returned by getConfiguration | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels creates a datachannel m-line | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels puts the datachannel m-line first when createDataChannel is called after addTransceiver | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels adds the datachannel m-line after an associated m-line without negotiationneeded | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels requires negotiation when a datachannel is created after negotiating without one | PASS | PASS | PASS | FAIL | FAIL | — |
| alwaysNegotiateDataChannels does not require negotiation when creating a datachannel | PASS | PASS | FAIL | FAIL | FAIL | — |
| alwaysNegotiateDataChannels puts the datachannel m-line before other new m-lines in a reoffer | PASS | PASS | FAIL | FAIL | FAIL | — |
| setConfiguration cannot modify alwaysNegotiateDataChannels from false to true | FAIL | PASS | FAIL | FAIL | FAIL | — |
| setConfiguration cannot modify alwaysNegotiateDataChannels from true to false | FAIL | PASS | FAIL | FAIL | FAIL | — |
| setConfiguration with an unchanged alwaysNegotiateDataChannels is allowed | PASS | PASS | FAIL | FAIL | FAIL | — |