As of 2026, AnyTLS lacks a standardized subscription link format (unlike VLESS/Trojan/Hysteria2), requires manual JSON configuration distribution, and is supported primarily by sing-box with limited support in v2rayNG and Shadowrocket. The guide explicitly warns it is unsuitable for production environments and recommends VLESS or Hysteria2 for production deployments and Hysteria2 for high-performance needs.

AnyTLS's default padding scheme operates across 8 levels (stop=8), with initial padding fixed at 30 bytes, small-data padding 100–400 bytes, and medium-to-large data padding chains of 400–500 bytes continuing through multiple 500–1000 byte segments. The 'c' (continue) marker allows multi-stage padding sequences within a single connection burst.

§2.3 defense

AnyTLS implements a persistent idle-session pool with configurable parameters: idle_session_check_interval (default 30s), idle_session_timeout (default 30s), and min_idle_session (default 5). The client maintains at least 5 pre-established TLS sessions at all times to enable fast connection reuse without a new TLS handshake per request.

§2.4, §5.3 defense

Compared to peer protocols, AnyTLS rates 'medium' performance (vs. VLESS 'high', Hysteria2 'very high', TUIC 'high'), uses TCP/TLS transport (vs. UDP/QUIC for Hysteria2 and TUIC), and relies on padding-based obfuscation vs. REALITY/WebSocket (VLESS) or HTTP/3 framing (Hysteria2). Client ecosystem support is currently limited primarily to sing-box, vs. broad cross-client support for VLESS, Trojan, and Hysteria2.

§1.5, Table 1.5 evaluation

AnyTLS is a TLS-based proxy protocol maintained by the sing-box team, designed in 2024 and first released in the sing-box dev-next branch. Its core mechanism wraps arbitrary proxy traffic in standard TLS and applies a configurable padding scheme (Padding Scheme) to enhance traffic concealment while maintaining compatibility with standard TLS infrastructure.

§1.1–1.3 defense