Limited Availability
id: early-data
Early data
TLS 1.3 sessions may be resumed more quickly by sending so-called early data to servers before the TLS handshake has finished. Also known as zero round-trip time resumption or 0-RTT.
Baseline Status:
This feature is currently Limited and is missing in at least one major browser engine.
Desktop Browser Engine Support
Google Chrome
—
Unsupported
Mozilla Firefox
58
Supported
Apple Safari
—
Unsupported
Microsoft Edge
—
Unsupported
Mobile Browser Engine Support
Chrome Android
—
Firefox Android
58
Safari iOS
—
Specifications and References
MDN Browser Compat Data Keys: