Added API to allow getting player latency

src/pocketmine/Player.php

@@ -300,6 +300,12 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	/** @var string */
 	protected $locale = "en_US";
 
+	/**
+	 * @var int
+	 * Last measurement of player's latency in milliseconds.
+	 */
+	protected $lastPingMeasure = 1;
+
 	/**
 	 * @return TranslationContainer|string
 	 */
@@ -802,6 +808,27 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 		return $this->port;
 	}
 
+	/**
+	 * Returns the last measured latency for this player, in milliseconds. This is measured automatically and reported
+	 * back by the network interface.
+	 *
+	 * @return int
+	 */
+	public function getPing() : int{
+		return $this->lastPingMeasure;
+	}
+
+	/**
+	 * Updates the player's last ping measurement.
+	 *
+	 * @internal Plugins should not use this method.
+	 *
+	 * @param int $pingMS
+	 */
+	public function updatePing(int $pingMS){
+		$this->lastPingMeasure = $pingMS;
+	}
+
 	/**
 	 * @return Position
 	 */

src/pocketmine/PocketMine.php

@@ -167,8 +167,8 @@ namespace pocketmine {
 		exit(1);
 	}
 
-	if(version_compare(RakLib::VERSION, "0.8.1") < 0){
-		echo "[CRITICAL] RakLib version 0.8.1 is required, while you have version " . RakLib::VERSION . "." . PHP_EOL;
+	if(version_compare(RakLib::VERSION, "0.8.2") < 0){
+		echo "[CRITICAL] RakLib version 0.8.2 is required, while you have version " . RakLib::VERSION . "." . PHP_EOL;
 		echo "[CRITICAL] Please update your submodules or use provided builds." . PHP_EOL;
 		exit(1);
 	}

src/pocketmine/network/mcpe/RakLibInterface.php

@@ -237,6 +237,12 @@ class RakLibInterface implements ServerInstance, AdvancedSourceInterface{
 		return null;
 	}
 
+	public function updatePing(string $identifier, int $pingMS){
+		if(isset($this->players[$identifier])){
+			$this->players[$identifier]->updatePing($pingMS);
+		}
+	}
+
 	private function getPacket($buffer){
 		$pid = ord($buffer{0});
 		if(($data = PacketPool::getPacketById($pid)) === null){

src/raklib

@@ -1 +1 @@
-Subproject commit d6317312eb058402ee39e25e1d55bd08f5b35532
+Subproject commit 268a93c575c3ffa699e8a66b854834989245bb05