节点服务器未连接到 SQL Server

Question

This is my first time trying to setup a NodeJS API to connect my Vue webapp to my SQL database.

Running my server with this config:

const mysql = require("mysql"); const dbConfig = require("../config/db.config.js");

// Create a connection to the database const connection = mysql.createConnection({
    host: dbConfig.HOST, //localhost
    user: dbConfig.USER,    //LAPTOP-****\*****
    password: dbConfig.PASSWORD, // ""
    database: dbConfig.DB, //Applaudeme
    port: 1433 });

// open the MySQL connection connection.connect(error => {
    if (error) throw error;
    console.log("Successfully connected to the database."); });

Where dbConfig is:

module.exports = {
    HOST: "localhost",
    USER: "LAPTOP-*****\*****",
    PASSWORD: "",
    DB: "*****",
};

I'm getting this error after a minute or so when trying to open the connection:

    if (error) throw error;
               ^

Error: read ECONNRESET
    at TCP.onStreamRead (node:internal/stream_base_commons:220:20)
    --------------------
    at Protocol._enqueue (C:\Users\Tomas\Documents\WebServerv2\AppServer\node_modules\mysql\lib\protocol\Protocol.js:144:48)
    at Protocol.handshake (C:\Users\Tomas\Documents\WebServerv2\AppServer\node_modules\mysql\lib\protocol\Protocol.js:51:23)
    at Connection.connect (C:\Users\Tomas\Documents\WebServerv2\AppServer\node_modules\mysql\lib\Connection.js:116:18)
    at Object.<anonymous> (C:\Users\Tomas\Documents\WebServerv2\AppServer\models\index.js:14:12)

    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18) {   errno: -4077,   code: 'ECONNRESET',   syscall: 'read',   fatal: true } [1]+  Exit 127                SET DEBUG=webserver2:*

I've tried the following:

• SQL Config Manager Services

• SQL Config Manager Network Configuration Protocols

• I've reinstalled both SQL Server (SQL Server 2019 Developer) and SQL Server Management Studio (v17.9)

• I've allowed port 1433 on my firewall.

• Different ports or default ports didn't change anything (1433 wasn't set by default)

I'm clueless as to why this keeps happening. I'm sure it's something dumb I'm somehow missing but for the life of me I can't figure this out, so any and all suggestions are more than welcome.

Thanks in advance and sorry if something isn't clear, I'll clarify if needed!

Answer 1

1. Use SQL Server drivers , not MySql Drivers.

2. If you can connect on port 1433 then the config should be:

:

module.exports = {
    HOST: "localhost",
    USER: "LAPTOP-*****",
    PASSWORD: "",
    DB: "*****",
};

Using the instance name requires connecting to the SQL Browser on UDP port 1434, and the Browser must be running. But you can bypass this by using a port number (1433 is the default so may be omitted) instead of an instance name.

And Powershell's Test-NetConnection is your friend. eg

test-netconnection someserver -port 1433