Protocols Practice PRO

3x-ui: Hysteria2

Hysteria2 flies where TCP dies — on lossy, jittery, packet-drop-ridden networks. It's TLS-over-QUIC, meaning UDP. In 3x-ui it's stood up via the connection-creation form with protocol=hysteria2. Below is the whole path: cert, inbound, obfuscation, and the three gotchas everyone trips over. Enter the domain and email in the builder above.

This material is about engineering your own infrastructure and is educational in nature. Complying with the laws of your own jurisdiction is your responsibility.

Why Hysteria2 and the main thing about UDP

Hysteria2 is a protocol over QUIC, i.e. over UDP, not TCP. Hence its superpower: on bad networks (lossy mobile internet, high latency, jittery Wi-Fi) it holds speed where TCP-Reality sags or breaks. Its own built-in congestion control (BBR-like) squeezes the channe…

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