minecraft-java-core/utils/status/statusserver.js

/**
 * @author Luuxis
 * @license CC-BY-NC 4.0 - https://creativecommons.org/licenses/by-nc/4.0/
 */

const net = require('net');

module.exports = class status {
    constructor(ip = '0.0.0.0', port = 25565) {
        this.ip = ip
        this.port = port
    }

    getStatus() {
        return new Promise((resolve) => {
            let start = new Date();
            let client = net.connect(this.port, this.ip, () => {
                client.write(Buffer.from([0xFE, 0x01]))
            });

            client.setTimeout(5 * 1000)

            client.on('data', (data) => {
                if (data != null && data != '') {
                    let infos = data.toString().split("\x00\x00\x00")
                    resolve({
                        error: false,
                        ms: Math.round(new Date() - start),
                        version: infos[2].replace(/\u0000/g, ''),
                        nameServer: infos[3].replace(/\u0000/g, ''),
                        playersConnect: infos[4].replace(/\u0000/g, ''),
                        playersMax: infos[5].replace(/\u0000/g, '')
                    })
                }
                client.end()
            });

            client.on('timeout', () => {
                resolve({ error: true })
                client.end()
            });

            client.on('err', (err) => {
                resolve({ error: true })
                console.error(err)
            })
        })
    }
}