I think this is bad advice. Can you share the proxy code you used please @sidorares ? When you request a connection from a pool, you are either given a connection that is currently not being used or a new connection. The timezone used to store local dates. Ltd. All rights Reserved. at Protocol.end (C:\Users\ahmedm\WebstormProjects\webSocketTot\newMYSQL\node_modules\mysql\lib\protocol\Protocol.js:112:13) at TLSSocket.onend . This is important. Rather than creating and managing connections one by one, this module also provides built-in connection pooling using createPool. const mysql = require ('mysql'); const pool = mysql.createPool ( { connectionLimit: 10, host: 'XXX', user: 'XXX', password:'XXX', database: 'XXX' }) pool.getConnection ( (err, connection) => { if (err) { if (err.code === 'PROTOCOL_CONNECTION_LOST') { console.error ('Database connection was closed.') } if (err.code === 'ER_CON_COUNT_ERROR') { NaN / Infinity are left as-is. node.js - MySQL connection issue with Pomelo game framework - Stack I think the fact that we now know this is not a query issue is a step forward. I can confirm that this library ensures that connections are auto-released after each query. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Nested objects are cast to strings. The ssl option in the connection options takes a string or an object. This number will depend on the amount and size of your rows. at Socket.<anonymous> (/Users/VisualStudio/node_modules/mysql2/lib/connection.js:91:31) at Socket.emit (events.js:314:20) at TCP.<anonymous> (net.js:673:12) { fatal: true, code: 'PROTOCOL_CONNECTION_LOST' } No errors are reported by Apache. @jackieLin you can simulate the situation, restarting mysql service, on ubuntu sudo service mysql restart, Thank you @user3073745, this problem is solved by restart. Manually READ MORE, Hello @kartik, Generates stack traces on Error to include call site of library entrance ("long stack traces"). Hello, First of all, thank you for your work building this amazing library! A good way to handle such unexpected disconnects is shown below: As you can see in the example above, re-connecting a connection is done by establishing a new connection. If that is the case, would it be possible that I have a possible memory leak or forgot to apply a db.end()? What is Wario dropping at the end of Super Mario Land 2 and why? Nowadays, I cannot think of any valid use case. "Amazon RDS": this profile is for connecting to an Amazon RDS server and contains the ca from https://rds.amazonaws.com/doc/rds-ssl-ca-cert.pem, Booleans are converted to true / false strings, Date objects are converted to 'YYYY-mm-dd HH:ii:ss' strings, Buffers are converted to hex strings, e.g. Here is the way I wrote follow the solution: Try to use this code to handle server disconnect: In your code i am missing the parts after connection = mysql.createConnection(db_config); I do not recall my original use case for this mechanism. But after several hours later, server crashed with mysql issue. Re: nodejs/socket.io/mysql ERROR!!! The milliseconds before a timeout occurs during the connection acquisition. You can access the connection object if you want to use the built-in .escape() or any other connection function. The entire message is as follows: That is the answer. This support takes advantage of the efficient client/server binary protocol available since MySQL 4.1. at Protocol.end (/path/t. Although I need it to be a What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? (Default off) PROTOCOL_41 - Uses the 4.1 protocol. If you have a good use case for streaming large fields to and from MySQL, I'd love to get your thoughts and contributions on this. Using the pool mechanism is going to hide all the complicated details on how to handle connection time outs. [Solved] nodejs mysql Error: Connection lost The server | 9to5Answer If you haven't already done so, you can install it using the following command: Next, we need to create a MySQL connection using the mysql module. Next: Embedded hyperlinks in a thesis or research paper, Counting and finding real solutions of an equation. Here's an example of how to do this: This code listens for the error event and logs an error message to the console if the connection is lost.

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