const github.com/refraction-networking/utls/dicttls.TLS_EMPTY_RENEGOTIATION_INFO_SCSV

one use

	github.com/refraction-networking/utls/dicttls (current package)
		cipher_suites.go#L155: 	TLS_EMPTY_RENEGOTIATION_INFO_SCSV uint16 = 0x00FF