const net/http.http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384

one use

	net/http (current package)
		h2_bundle.go#L256: 	http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384      uint16 = 0xC02C