详细mysql协议的ping命令包及解析

git

https://github.com/sea-boat/mysql-protocol

概况

mysql客户端可以用ping命令来检查服务端的状态，正常会返回ok包。

mysql通信报文结构

ping命令包

Payload

1 [0e] COM_PING

更多详情 ： http://dev.mysql.com/doc/internals/en/com-ping.html

ping命令包类

/**
 * 
 * @author seaboat
 * @date 2016-09-25
 * @version 1.0
 * <pre><b>email: </b>849586227@qq.com</pre>
 * <pre><b>blog: </b>http://www.gxlcms.com/;/pre>
 * <p>ping command packet.</p>
 */public class PingPacket extends MySQLPacket {
 // payload length is 1,packet id is 0,payload is 0e
 public static final byte[] PING = new byte[] { 1, 0, 0, 0, 14 }; 
 @Override
 public int calcPacketSize() { 
 return 1;
 } @Override
 protected String getPacketInfo() { 
 return "MySQL Ping Packet";
 }

}