#### 10.2 链接属性方法实现 > zinx/znet/connction.go ```go type Connection struct { //当前Conn属于哪个Server TcpServer ziface.IServer //当前连接的socket TCP套接字 Conn *net.TCPConn //当前连接的ID 也可以称作为SessionID，ID全局唯一 ConnID uint32 //当前连接的关闭状态 isClosed bool //消息管理MsgId和对应处理方法的消息管理模块 MsgHandler ziface.IMsgHandle //告知该链接已经退出/停止的channel ExitBuffChan chan bool //无缓冲管道，用于读、写两个goroutine之间的消息通信 msgChan chan []byte //有关冲管道，用于读、写两个goroutine之间的消息通信 msgBuffChan chan []byte // ================================ //链接属性 property map[string]interface{} //保护链接属性修改的锁 propertyLock sync.RWMutex // ================================ } //创建连接的方法 func NewConntion(server ziface.IServer, conn *net.TCPConn, connID uint32, msgHandler ziface.IMsgHandle) *Connection { //初始化Conn属性 c := &Connection{ TcpServer: server, Conn: conn, ConnID: connID, isClosed: false, MsgHandler: msgHandler, ExitBuffChan: make(chan bool, 1), msgChan: make(chan []byte), msgBuffChan: make(chan []byte, utils.GlobalObject.MaxMsgChanLen), property: make(map[string]interface{}), //对链接属性map初始化 } //将新创建的Conn添加到链接管理中 c.TcpServer.GetConnMgr().Add(c) return c } // ... //设置链接属性 func (c *Connection) SetProperty(key string, value interface{}) { c.propertyLock.Lock() defer c.propertyLock.Unlock() c.property[key] = value } //获取链接属性 func (c *Connection) GetProperty(key string) (interface{}, error) { c.propertyLock.RLock() defer c.propertyLock.RUnlock() if value, ok := c.property[key]; ok { return value, nil } else { return nil, errors.New("no property found") } } //移除链接属性 func (c *Connection) RemoveProperty(key string) { c.propertyLock.Lock() defer c.propertyLock.Unlock() delete(c.property, key) } ```