COLITU LABProbes starting

TCP + TLS (Reality)

VLESS Reality

VLESS over TCP with REALITY: a TLS 1.3 connection that presents a real, unrelated website. The handshake names a well-known site and a passive observer sees that site's certificate; only clients holding the server's key reach the proxy. XTLS Vision avoids the tell-tale TLS-inside-TLS pattern.

Where it does well

Hard to tell apart from ordinary HTTPS to a popular site; TCP passes where UDP is blocked.

Where it struggles

A TCP connection per session; addresses that only ever carry such connections can be blocked by address, and large handshakes can be cut by filters that inspect the first packets.

CSVJSONAPI
Success, 90 days—Not enough data
Tunnel tests00 vantage points
Median time to first answer—successful tests only
Server locations0tested

VLESS Reality over time

All vantage points and servers.

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By network

Where the test ran from.

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By server location

Where the server was. A location that fails from every network points at the server, not at censorship.

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Compared with the other transports

Same window, same vantage points.

Open in Compare

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