【Mina】Session

client和server的连接： 叫session

 

Session State：

 

• Connected : the session has been created and is available
• Idle : the session hasn't processed any request for at least a period of time (this period is configurable)
  • Idle for read : no read has actually been made for a period of time
  • Idle for write : no write has actually been made for a period of time
  • Idle for both : no read nor write for a period of time
• Closing : the session is being closed (the remaining messages are being flushed, cleaning up is not terminated)
• Closed : The session is now closed, nothing else can be done to revive it.

状态转换图：

Session需要配置的参数：

Many different parameters can be set for a specific session :

• receive buffer size
• sending buffer size
• Idle time
• Write timeOut

Container

    在session中，有一个container，可以放置key/value属性（是个map结构）；

    如果要用自己的container，譬如不用map，或者大尺寸value要放在磁盘上，要能够自己替换这个container

实现这个接口：

public interface IoSessionDataStructureFactory {
    /**
     * Returns an {@link IoSessionAttributeMap} which is going to be associated
     * with the specified <tt>session</tt>.  Please note that the returned
     * implementation must be thread-safe.
     */
    IoSessionAttributeMap getAttributeMap(IoSession session) throws Exception;
}

 

Filter chain

 

Handler