WPT
wpt / websockets / extended-payload-length.html?wpt_flags=h2
Spec: WebSockets ↗
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@9b4cabf6d, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | 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 | 4/4 | 4/4 | 4/4 | 0/4 | 0/4 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Application data is 125 byte which means any 'Extended payload length' field isn't used at all. | PASS | PASS | PASS | FAIL | FAIL | — |
| Application data is 126 byte which starts to use the 16 bit 'Extended payload length' field. | PASS | PASS | PASS | FAIL | FAIL | — |
| Application data is 0xFFFF byte which means the upper bound of the 16 bit 'Extended payload length' field. | PASS | PASS | PASS | FAIL | FAIL | — |
| Application data is (0xFFFF + 1) byte which starts to use the 64 bit 'Extended payload length' field | PASS | PASS | PASS | FAIL | FAIL | — |