use mcping-js, prevent ping loops while the last is still running

lib/ping.js

@@ -1,4 +1,4 @@
-const minecraftJavaPing = require('mc-ping-updated')
+const minecraftJavaPing = require('mcping-js')
 const minecraftBedrockPing = require('mcpe-ping-fixed')
 
 const logger = require('./logger')
@@ -10,7 +10,9 @@ function ping (serverRegistration, timeout, callback, version) {
   switch (serverRegistration.data.type) {
     case 'PC':
       serverRegistration.unfurlSrv((host, port) => {
-        minecraftJavaPing(host, port || 25565, (err, res) => {
+        const server = new minecraftJavaPing.MinecraftServer(host, port || 25565)
+
+        server.ping(timeout, version, (err, res) => {
           if (err) {
             callback(err)
           } else {
@@ -28,7 +30,7 @@ function ping (serverRegistration, timeout, callback, version) {
 
             callback(null, payload)
           }
-        }, timeout, version)
+        })
       })
       break
 
@@ -71,6 +73,7 @@ function capPlayerCount (host, playerCount) {
 class PingController {
   constructor (app) {
     this._app = app
+    this._isRunningTasks = false
   }
 
   schedule () {
@@ -113,8 +116,15 @@ class PingController {
   }
 
   startPingTasks = (callback) => {
+    if (this._isRunningTasks) {
+      logger.log('warn', 'Started re-pinging servers before the last loop has finished! You may need to increase "rates.pingAll" in config.json')
+
+      return
+    }
+
+    this._isRunningTasks = true
+
     const results = []
-    let remainingTasks = this._app.serverRegistrations.length
 
     for (const serverRegistration of this._app.serverRegistrations) {
       const version = serverRegistration.getNextProtocolVersion()
@@ -130,7 +140,10 @@ class PingController {
           version
         }
 
-        if (--remainingTasks === 0) {
+        if (Object.keys(results).length === this._app.serverRegistrations.length) {
+          // Loop has completed, release the locking flag
+          this._isRunningTasks = false
+
           callback(results)
         }
       }, version.protocolId)

lib/servers.js

@@ -223,11 +223,7 @@ class ServerRegistration {
 
       // Generate an updated hash
       // This is used by #getFaviconUrl
-      if (!this._faviconHasher) {
-        this._faviconHasher = crypto.createHash('md5')
-      }
-
-      this.faviconHash = this._faviconHasher.update(favicon).digest('hex').toString()
+      this.faviconHash = crypto.createHash('md5').update(favicon).digest('hex').toString()
 
       return true
     }