protocol

type Action string

type CommonReq struct {
	ID string `json:"id"`
}

type ConnectionReq struct {
	CommonReq
}

type HandshakeReq struct {
	// SecretKeySelector is the selector of the secret key, 4 bytes use hex string(8 bytes in total).
	//
	// If there is no key verification, this field is not needed
	SecretKeySelector string `json:"secretKeySelector"`
	// AuthFieldB64 is encrypted with secret key,["AUTH"+RANDOM_STRING(16)]
	//
	// If there is no key verification, this field is not needed
	AuthFieldB64 string `json:"authFieldB64"`
	// AuthAAD is the additional authentication data
	//
	// If there is no key verification, this field is not needed
	AuthAAD string `json:"authAAD"`
	// KDFSalt is the salt of the KDF
	//
	// If there is no key verification, this field is not needed
	KDFSaltB64 string `json:"kdfSaltB64"`
	// EcdhPublicKey is the public key of the ECDH X25519 key exchange
	EcdhPublicKeyB64 string `json:"ecdhPublicKeyB64"`
}

type HandshakeResp struct {
	// RandomSharedKeyB64 string `json:"randomSharedKey"`
	Code StatusCode `json:"code"`
	Msg  string     `json:"msg"`
	// EcdhPublicKey is the public key of the ECDH X25519 key exchange
	EcdhPublicKeyB64 string `json:"ecdhPublicKeyB64"`
	// KDFSalt is the salt of the KDF
	KDFSaltB64 string `json:"kdfSaltB64"`
}

type HeartbeatReq struct {
	CommonReq
	NeedResp bool `json:"needResp"`
}

type RelayReq struct {
	CommonReq
}

type ReqHead struct {
	Action  Action `json:"action"`
	DataLen int    `json:"dataLen"`
}

type RespHead struct {
	Code    StatusCode `json:"code"`
	Msg     string     `json:"msg"`
	Action  Action     `json:"action"`
	DataLen int        `json:"dataLen"`
}

type StatusCode int32