package socket

import (
	"time"
)

type Action int

const (
	// None indicates that no action should occur following an event.
	None Action = iota
	// Close closes the connection.
	Close
	// Shutdown shutdowns the engine.
	Shutdown
)

// ISocketServer 由应用层实现
type ISocketServer interface {
	OnOpen(ISocketConn) ([]byte, Action)  // 开启连接
	OnHandShake(ISocketConn)              // 开始握手
	OnMessage(ISocketConn, []byte) Action // 收到消息
	OnClose(ISocketConn, error) Action    // 关闭连接
	OnTick() (time.Duration, Action)
}

// ISocketConn 由网络层实现
type ISocketConn interface {
	GetParam(key string) string
	SetParam(key string, values string)
	Write(data []byte) error
	Close() error
}