pub const C2S_CLIENT_FEATURES: u8 = 0x2D;Expand description
Client feature/capability advertisement: [0x2D][payload:N] Currently defined payload bytes: [0] codec_support — bitmask of CODEC_SUPPORT_* flags the client can decode. 0 = accept anything (legacy). Sent once after connection when capability probing completes. The message is extensible: the server ignores trailing bytes it doesn’t understand, and missing bytes default to 0.