handshake

type ClientLogin struct {
	Capabilities         int // int<2>
	ExtendedCapabilities int // int<2>
	MaxPacketSize        int // int<4>
	Charset              byte
	// 23 bytes zero
	UserName   string // string<nul>
	PasswdLen  byte
	Passwd     []byte // string<len> len=$PasswdLen
	Database   string
	AuthPlugin string
	Attr       map[string]string
}

type ServerGreeting struct {
	ProtocolVersion byte   // 1
	MySQLVersion    string // string<nul>
	ThreadID        int    // int<4>
	Salt_1          []byte // 8 bytes
	// filter 0x00
	Capabilities               int // int<2>
	ServerLanguage             byte
	StatusFlag                 int // 2 bytes
	ExtendedServerCapabilities int // 2 bytes
	AuthPluginLen              int // 1 byte
	// 10 bytes reserved
	Salt_2     []byte
	AuthPlugin string
}