package tls import ( "context" "crypto/tls" "net" "github.com/sagernet/sing-box/adapter" E "github.com/sagernet/sing/common/exceptions" ) type ( STDConfig = tls.Config STDConn = tls.Conn ) type Config interface { Config() (*STDConfig, error) Client(conn net.Conn) Conn } type ServerConfig interface { Config adapter.Service Server(conn net.Conn) Conn } type Conn interface { net.Conn HandshakeContext(ctx context.Context) error } func ParseTLSVersion(version string) (uint16, error) { switch version { case "1.0": return tls.VersionTLS10, nil case "1.1": return tls.VersionTLS11, nil case "1.2": return tls.VersionTLS12, nil case "1.3": return tls.VersionTLS13, nil default: return 0, E.New("unknown tls version:", version) } }