协议数据包乱序

Posted 2023-02-26

【中文标题】协议数据包乱序

【英文标题】：protocol packets out of order

【发布时间】：2018-02-18 19:43:28

【问题描述】：

我最近在 A2 Hosting 上上传了我的 node.js 应用程序，我收到了这个错误：

 Error: Packets out of order. Got: 80 Expected: 0
    at Parser.write (/home/westudec/public_html/myapp/node_modules/mysql/lib/protocol/Parser.js:42:19)
    at Protocol.write (/home/westudec/public_html/myapp/node_modules/mysql/lib/protocol/Protocol.js:39:16)
    at Socket.<anonymous> (/home/westudec/public_html/myapp/node_modules/mysql/lib/Connection.js:103:28)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at TCP.onread (net.js:547:20)
    --------------------
    at Protocol._enqueue (/home/westudec/public_html/myapp/node_modules/mysql/lib/protocol/Protocol.js:145:48)
    at Protocol.handshake (/home/westudec/public_html/myapp/node_modules/mysql/lib/protocol/Protocol.js:52:23)
    at Connection.connect (/home/westudec/public_html/myapp/node_modules/mysql/lib/Connection.js:130:18)
    at Object.<anonymous> (/home/westudec/public_html/myapp/app2.js:22:7)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.runMain (module.js:604:10) code: 'PROTOCOL_PACKETS_OUT_OF_ORDER', fatal: true 

我从这段代码中得到了那个错误：

var connection = mysql.createConnection(connDB);
connection.connect();
connection.query(`SELECT * FROM action`, function(err, data)
    if(err) return console.error(err);
    else 
        console.log("data : ", data);
    
)

在我的本地主机上它工作得很好，但在服务器上我得到了那个错误。关于这个错误的文档很差。 有人有想法吗？

谢谢

【参考方案1】：

需要在mysql配置文件（my.cnf）中增加mysqlmax_allowed_packet参数，方法如下：

max_allowed_packet=500M