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prettyify code

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Lee
2023-12-30 23:03:54 +00:00
parent 6fd5fdb7fe
commit ea15b979d5
28 changed files with 2179 additions and 1688 deletions
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83
lib/dns.js
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@ -1,78 +1,97 @@
const dns = require('dns')
const dns = require("dns");
const logger = require('./logger')
const logger = require("./logger");
const { TimeTracker } = require('./time')
const { TimeTracker } = require("./time");
const config = require('../config')
const config = require("../config");
const SKIP_SRV_TIMEOUT = config.skipSrvTimeout || 60 * 60 * 1000
const SKIP_SRV_TIMEOUT = config.skipSrvTimeout || 60 * 60 * 1000;
class DNSResolver {
constructor (ip, port) {
this._ip = ip
this._port = port
constructor(ip, port) {
this._ip = ip;
this._port = port;
}
_skipSrv () {
this._skipSrvUntil = TimeTracker.getEpochMillis() + SKIP_SRV_TIMEOUT
_skipSrv() {
this._skipSrvUntil = TimeTracker.getEpochMillis() + SKIP_SRV_TIMEOUT;
}
_isSkipSrv () {
return this._skipSrvUntil && TimeTracker.getEpochMillis() <= this._skipSrvUntil
_isSkipSrv() {
return (
this._skipSrvUntil && TimeTracker.getEpochMillis() <= this._skipSrvUntil
);
}
resolve (callback) {
resolve(callback) {
if (this._isSkipSrv()) {
callback(this._ip, this._port, config.rates.connectTimeout)
callback(this._ip, this._port, config.rates.connectTimeout);
return
return;
}
const startTime = TimeTracker.getEpochMillis()
const startTime = TimeTracker.getEpochMillis();
let callbackFired = false
let callbackFired = false;
const fireCallback = (ip, port) => {
if (!callbackFired) {
callbackFired = true
callbackFired = true;
// Send currentTime - startTime to provide remaining connectionTime allowance
const remainingTime = config.rates.connectTimeout - (TimeTracker.getEpochMillis() - startTime)
const remainingTime =
config.rates.connectTimeout -
(TimeTracker.getEpochMillis() - startTime);
callback(ip || this._ip, port || this._port, remainingTime)
callback(ip || this._ip, port || this._port, remainingTime);
}
}
};
const timeoutCallback = setTimeout(fireCallback, config.rates.connectTimeout)
const timeoutCallback = setTimeout(
fireCallback,
config.rates.connectTimeout
);
dns.resolveSrv('_minecraft._tcp.' + this._ip, (err, records) => {
dns.resolveSrv("_minecraft._tcp." + this._ip, (err, records) => {
// Cancel the timeout handler if not already fired
if (!callbackFired) {
clearTimeout(timeoutCallback)
clearTimeout(timeoutCallback);
}
// Test if the error indicates a miss, or if the records returned are empty
if ((err && (err.code === 'ENOTFOUND' || err.code === 'ENODATA')) || !records || records.length === 0) {
if (
(err && (err.code === "ENOTFOUND" || err.code === "ENODATA")) ||
!records ||
records.length === 0
) {
// Compare config.skipSrvTimeout directly since SKIP_SRV_TIMEOUT has an or'd value
// isSkipSrvTimeoutDisabled == whether the config has a valid skipSrvTimeout value set
const isSkipSrvTimeoutDisabled = typeof config.skipSrvTimeout === 'number' && config.skipSrvTimeout === 0
const isSkipSrvTimeoutDisabled =
typeof config.skipSrvTimeout === "number" &&
config.skipSrvTimeout === 0;
// Only activate _skipSrv if the skipSrvTimeout value is either NaN or > 0
// 0 represents a disabled flag
if (!this._isSkipSrv() && !isSkipSrvTimeoutDisabled) {
this._skipSrv()
this._skipSrv();
logger.log('warn', 'No SRV records were resolved for %s. Minetrack will skip attempting to resolve %s SRV records for %d minutes.', this._ip, this._ip, SKIP_SRV_TIMEOUT / (60 * 1000))
logger.log(
"warn",
"No SRV records were resolved for %s. Minetrack will skip attempting to resolve %s SRV records for %d minutes.",
this._ip,
this._ip,
SKIP_SRV_TIMEOUT / (60 * 1000)
);
}
fireCallback()
fireCallback();
} else {
// Only fires if !err && records.length > 0
fireCallback(records[0].name, records[0].port)
fireCallback(records[0].name, records[0].port);
}
})
});
}
}
module.exports = DNSResolver
module.exports = DNSResolver;