ja3

type ClientHello struct {
	ServerName        string
	SupportedProtos   []string      // 列出客户端支持的应用协议。[h2 http/1.1]
	SupportedPoints   []uint8       // 列出了客户端支持的点格式[0]
	SupportedCurves   []tls.CurveID // 列出了客户端支持的椭圆曲线。 [CurveID(2570) X25519 CurveP256 CurveP384]
	SupportedVersions []uint16      // 列出了客户端支持的TLS版本。[2570 772 771]

	CipherSuites     []uint16              // 客户端支持的密码套件 [14906 4865 4866 4867 49195 49199 49196 49200 52393 52392 49171 49172 156 157 47 53]
	SignatureSchemes []tls.SignatureScheme // 列出了客户端愿意验证的签名和散列方案[ECDSAWithP256AndSHA256 PSSWithSHA256 PKCS1WithSHA256 ECDSAWithP384AndSHA384 PSSWithSHA384 PKCS1WithSHA384 PSSWithSHA512 PKCS1WithSHA512]
}

type ClientHelloId = utls.ClientHelloID

type ClientHelloSpec utls.ClientHelloSpec

type H2Ja3Spec struct {
	InitialSetting []Setting
	ConnFlow       uint32   // WINDOW_UPDATE:15663105
	OrderHeaders   []string // 伪标头顺序,例如：[]string{":method",":authority",":scheme",":path"}
}

type Ja3ContextData struct {
	ClientHello ClientHello `json:"clientHello"`
	Init        bool        `json:"init"`
}

type Setting struct {
	// ID is which setting is being set.
	// See https://httpwg.org/specs/rfc7540.html#SettingFormat
	Id uint16
	// Val is the value.
	Val uint32
}