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mrcsin merged 1 commit into from
Oct 16, 2026
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docs(xray): date the client compatibility check #9

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16 changes: 9 additions & 7 deletions docs/xray.md
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Expand Up @@ -94,13 +94,15 @@ files and fallbacks never reach `clients/` or the log.

## Client compatibility

Checked against Xray 26.10.10 and sing-box 1.14.3.

- Reality links work in Xray-core clients only: the server requires an `X25519MLKEM768` key
share, which sing-box does not send. Of the uTLS fingerprints, only `chrome`, `firefox` and
`safari` send it.
- xhttp is not in upstream sing-box.
- VLESS ws, Trojan, VMess and Hysteria2 with salamander work in sing-box.
Checked on 2026-10-14 with Xray-core 26.10.10 and sing-box 1.14.3. A new Xray, uTLS or sing-box
release can change this.

- Xray-core connects to every supported shape. Since Xray 26.9.8 the Reality server accepts a
ClientHello only with an `X25519MLKEM768` key share. The uTLS fingerprints `chrome`, `firefox`
and `safari` send it, and usher fails a Reality inbound with any other `x-usher.fingerprint`. A
client core before 26.3.27 sends `firefox` without the share and fails; `chrome` connects there.
- sing-box fails Reality on every fingerprint and has no xhttp transport. VLESS ws, Trojan, VMess
and Hysteria2 with salamander work.

## Removing a user

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