ShadowsocksR — not supported by Xray-core

Xray-core does not implement the ShadowsocksR (SSR) variant. SSR is a legacy fork that adds obfuscation and protocol-layer plugins to the original Shadowsocks; Xray follows the upstream Shadowsocks lineage including the modern Shadowsocks-2022 family.

Workaround

For SSR connectivity, use:

• ShadowsocksR — sing-box — full outbound support (client only).
• ShadowsocksR — mihomo — full outbound support.

If you need an Xray instance to consume an SSR server, run sing-box or mihomo as a sidecar process and chain Xray's outbound through it via SOCKS5.

Why Xray skipped it

SSR's obfuscation and protocol-plugin layers (obfs, protocol) were designed around DPI conditions in 2014–2015 and have not aged well — they leak distinguishable patterns on modern stateful firewalls. Xray's recommended path forward is VLESS + REALITY for the camouflage role and Shadowsocks-2022 for the cipher role.