Use challenge straight away if available

This reverts commit 7231921b0b.

.github/workflows/ci.yml

@@ -7,10 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: [7.2, 7.3]
+        php: [7.4]
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
       run: composer install --no-interaction --no-progress
     - name: Run tests
       run: php${{ matrix.php }} vendor/bin/phpunit --configuration Tests/phpunit.xml --verbose --fail-on-warning
+    - name: Run psalm
+      run: php${{ matrix.php }} vendor/bin/psalm

Examples/View.php

@@ -17,6 +17,7 @@
 	$Info    = Array( );
 	$Rules   = Array( );
 	$Players = Array( );
+	$Exception = null;
 	
 	try
 	{
@@ -87,13 +88,11 @@
 	</div>
 		
 	<div class="container">
-<?php if( isset( $Exception ) ): ?>
-		<div class="panel panel-primary">
-			<div class="panel-heading"><?php echo Get_Class( $Exception ); ?> at line <?php echo $Exception->getLine( ); ?></div>
-			<p><b><?php echo htmlspecialchars( $Exception->getMessage( ) ); ?></b></p>
-			<p><?php echo nl2br( $e->getTraceAsString(), false ); ?></p>
+<?php if( $Exception !== null ): ?>
+		<div class="panel panel-error">
+			<pre class="panel-body"><?php echo htmlspecialchars( $Exception->__toString( ) ); ?></pre>
 		</div>
-<?php else: ?>
+<?php endif; ?>
 		<div class="row">
 			<div class="col-sm-6">
 				<table class="table table-bordered table-striped">
@@ -193,7 +192,6 @@
 				</table>
 			</div>
 		</div>
-<?php endif; ?>
 	</div>
 </body>
 </html>

README.md

@@ -1,7 +1,5 @@
 # PHP Source Query
 
-[![Build Status](https://img.shields.io/travis/com/xPaw/PHP-Source-Query.svg)](https://travis-ci.com/xPaw/PHP-Source-Query)
-[![Test Coverage](https://img.shields.io/coveralls/github/xPaw/PHP-Source-Query/master.svg)](https://coveralls.io/github/xPaw/PHP-Source-Query)
 [![Packagist Downloads](https://img.shields.io/packagist/dt/xpaw/php-source-query-class.svg)](https://packagist.org/packages/xpaw/php-source-query-class)
 [![Packagist Version](https://img.shields.io/packagist/v/xpaw/php-source-query-class.svg)](https://packagist.org/packages/xpaw/php-source-query-class)
 
@@ -14,7 +12,7 @@ The class also allows you to query servers using RCON although this only works f
 **:warning: Please do not create issues when you are unable to retrieve information from a server, unless you can prove that there is a bug within the library.**
 
 ## Requirements
-* [Modern PHP version](https://php.net/supported-versions.php) (5.5 or newer)
+* [Modern PHP version](https://php.net/supported-versions.php) (7.4 or newer)
 * 64-bit PHP or [gmp module](https://secure.php.net/manual/en/book.gmp.php)
 * Web server must allow UDP connections
 
@@ -39,6 +37,7 @@ AppID | Game | Query | RCON | Notes
 115300 | [Call of Duty: Modern Warfare 3](http://store.steampowered.com/app/115300/) | :white_check_mark: | :white_check_mark: | 
 211820 | [Starbound](http://store.steampowered.com/app/211820/) | :white_check_mark: | :white_check_mark: | Call `SetUseOldGetChallengeMethod` method after connecting
 244850 | [Space Engineers](http://store.steampowered.com/app/244850/) | :white_check_mark: | :x: | Add +1 to the server port
+251570 | [7 Days to Die](http://store.steampowered.com/app/251570) | :white_check_mark: | :x: |
 252490 | [Rust](http://store.steampowered.com/app/252490/) | :white_check_mark: | :x: |
 282440 | [Quake Live](http://store.steampowered.com/app/282440) | :white_check_mark: | :x: | Quake Live uses the ZMQ messaging queue protocol for rcon control.
 346110 | [ARK: Survival Evolved](http://store.steampowered.com/app/346110/) | :white_check_mark: | :white_check_mark: | 

SourceQuery/BaseSocket.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -13,6 +13,7 @@
 	namespace xPaw\SourceQuery;
 	
 	use xPaw\SourceQuery\Exception\InvalidPacketException;
+	use xPaw\SourceQuery\Exception\SocketException;
 
 	/**
 	 * Base socket interface
@@ -20,27 +21,29 @@
 	 * @package xPaw\SourceQuery
 	 *
 	 * @uses xPaw\SourceQuery\Exception\InvalidPacketException
+	 * @uses xPaw\SourceQuery\Exception\SocketException
 	 */
 	abstract class BaseSocket
 	{
+		/** @var resource */
 		public $Socket;
-		public $Engine;
+		public int $Engine;
 		
-		public $Address;
-		public $Port;
-		public $Timeout;
+		public string $Address;
+		public int $Port;
+		public int $Timeout;
 		
 		public function __destruct( )
 		{
 			$this->Close( );
 		}
 		
-		abstract public function Close( );
-		abstract public function Open( $Address, $Port, $Timeout, $Engine );
-		abstract public function Write( $Header, $String = '' );
-		abstract public function Read( $Length = 1400 );
+		abstract public function Close( ) : void;
+		abstract public function Open( string $Address, int $Port, int $Timeout, int $Engine ) : void;
+		abstract public function Write( int $Header, string $String = '' ) : bool;
+		abstract public function Read( int $Length = 1400 ) : Buffer;
 		
-		protected function ReadInternal( $Buffer, $Length, $SherlockFunction )
+		protected function ReadInternal( Buffer $Buffer, int $Length, callable $SherlockFunction ) : Buffer
 		{
 			if( $Buffer->Remaining( ) === 0 )
 			{
@@ -58,6 +61,7 @@
 				$Packets      = [];
 				$IsCompressed = false;
 				$ReadMore     = false;
+				$PacketChecksum = null;
 				
 				do
 				{
@@ -92,6 +96,10 @@
 							
 							break;
 						}
+						default:
+						{
+							throw new SocketException( 'Unknown engine.', SocketException::INVALID_ENGINE );
+						}
 					}
 					
 					$Packets[ $PacketNumber ] = $Buffer->Get( );
@@ -113,7 +121,7 @@
 					
 					$Data = bzdecompress( $Data );
 					
-					if( CRC32( $Data ) !== $PacketChecksum )
+					if( !is_string( $Data ) || CRC32( $Data ) !== $PacketChecksum )
 					{
 						throw new InvalidPacketException( 'CRC32 checksum mismatch of uncompressed packet data.', InvalidPacketException::CHECKSUM_MISMATCH );
 					}

SourceQuery/Buffer.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -25,31 +25,23 @@
 	{
 		/**
 		 * Buffer
-		 * 
-		 * @var string
 		 */
-		private $Buffer;
+		private string $Buffer = '';
 		
 		/**
 		 * Buffer length
-		 * 
-		 * @var int
 		 */
-		private $Length;
+		private int $Length = 0;
 		
 		/**
 		 * Current position in buffer
-		 * 
-		 * @var int
 		 */
-		private $Position;
+		private int $Position = 0;
 		
 		/**
 		 * Sets buffer
-		 *
-		 * @param string $Buffer Buffer
 		 */
-		public function Set( $Buffer )
+		public function Set( string $Buffer ) : void
 		{
 			$this->Buffer   = $Buffer;
 			$this->Length   = StrLen( $Buffer );
@@ -61,7 +53,7 @@
 		 *
 		 * @return int Remaining bytes in buffer
 		 */
-		public function Remaining( )
+		public function Remaining( ) : int
 		{
 			return $this->Length - $this->Position;
 		}
@@ -70,10 +62,8 @@
 		 * Gets data from buffer
 		 *
 		 * @param int $Length Bytes to read
-		 *
-		 * @return string
 		 */
-		public function Get( $Length = -1 )
+		public function Get( int $Length = -1 ) : string
 		{
 			if( $Length === 0 )
 			{
@@ -100,20 +90,16 @@
 		
 		/**
 		 * Get byte from buffer
-		 *
-		 * @return int
 		 */
-		public function GetByte( )
+		public function GetByte( ) : int
 		{
 			return Ord( $this->Get( 1 ) );
 		}
 		
 		/**
 		 * Get short from buffer
-		 *
-		 * @return int
 		 */
-		public function GetShort( )
+		public function GetShort( ) : int
 		{
 			if( $this->Remaining( ) < 2 )
 			{
@@ -122,15 +108,13 @@
 			
 			$Data = UnPack( 'v', $this->Get( 2 ) );
 			
-			return $Data[ 1 ];
+			return (int)$Data[ 1 ];
 		}
 		
 		/**
 		 * Get long from buffer
-		 *
-		 * @return int
 		 */
-		public function GetLong( )
+		public function GetLong( ) : int
 		{
 			if( $this->Remaining( ) < 4 )
 			{
@@ -139,15 +123,13 @@
 			
 			$Data = UnPack( 'l', $this->Get( 4 ) );
 			
-			return $Data[ 1 ];
+			return (int)$Data[ 1 ];
 		}
 		
 		/**
 		 * Get float from buffer
-		 *
-		 * @return float
 		 */
-		public function GetFloat( )
+		public function GetFloat( ) : float
 		{
 			if( $this->Remaining( ) < 4 )
 			{
@@ -156,15 +138,13 @@
 			
 			$Data = UnPack( 'f', $this->Get( 4 ) );
 			
-			return $Data[ 1 ];
+			return (float)$Data[ 1 ];
 		}
 		
 		/**
 		 * Get unsigned long from buffer
-		 *
-		 * @return int
 		 */
-		public function GetUnsignedLong( )
+		public function GetUnsignedLong( ) : int
 		{
 			if( $this->Remaining( ) < 4 )
 			{
@@ -173,15 +153,13 @@
 			
 			$Data = UnPack( 'V', $this->Get( 4 ) );
 			
-			return $Data[ 1 ];
+			return (int)$Data[ 1 ];
 		}
 		
 		/**
 		 * Read one string from buffer ending with null byte
-		 *
-		 * @return string
 		 */
-		public function GetString( )
+		public function GetString( ) : string
 		{
 			$ZeroBytePosition = StrPos( $this->Buffer, "\0", $this->Position );
 			

SourceQuery/Exception/AuthenticationException.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query

SourceQuery/Exception/InvalidArgumentException.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query

SourceQuery/Exception/InvalidPacketException.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query

SourceQuery/Exception/SocketException.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -17,4 +17,5 @@
 		const COULD_NOT_CREATE_SOCKET = 1;
 		const NOT_CONNECTED = 2;
 		const CONNECTION_FAILED = 3;
+		const INVALID_ENGINE = 3;
 	}

SourceQuery/Exception/SourceQueryException.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query

SourceQuery/GoldSourceRcon.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -13,6 +13,7 @@
 	namespace xPaw\SourceQuery;
 	
 	use xPaw\SourceQuery\Exception\AuthenticationException;
+	use xPaw\SourceQuery\Exception\InvalidPacketException;
 
 	/**
 	 * Class GoldSourceRcon
@@ -20,38 +21,37 @@
 	 * @package xPaw\SourceQuery
 	 *
 	 * @uses xPaw\SourceQuery\Exception\AuthenticationException
+	 * @uses xPaw\SourceQuery\Exception\InvalidPacketException
 	 */
 	class GoldSourceRcon
 	{
 		/**
 		 * Points to socket class
 		 * 
-		 * @var Socket
+		 * @var BaseSocket
 		 */
 		private $Socket;
 		
-		private $RconPassword;
-		private $RconRequestId;
-		private $RconChallenge;
+		private string $RconPassword = '';
+		private string $RconChallenge = '';
 		
-		public function __construct( $Socket )
+		public function __construct( BaseSocket $Socket )
 		{
 			$this->Socket = $Socket;
 		}
 		
-		public function Close( )
+		public function Close( ) : void
 		{
-			$this->RconChallenge = 0;
-			$this->RconRequestId = 0;
-			$this->RconPassword  = 0;
+			$this->RconChallenge = '';
+			$this->RconPassword  = '';
 		}
 		
-		public function Open( )
+		public function Open( ) : void
 		{
 			//
 		}
 		
-		public function Write( $Header, $String = '' )
+		public function Write( int $Header, string $String = '' ) : bool
 		{
 			$Command = Pack( 'cccca*', 0xFF, 0xFF, 0xFF, 0xFF, $String );
 			$Length  = StrLen( $Command );
@@ -62,9 +62,9 @@
 		/**
 		 * @param int $Length
 		 * @throws AuthenticationException
-		 * @return bool
+		 * @return Buffer
 		 */
-		public function Read( $Length = 1400 )
+		public function Read( int $Length = 1400 ) : Buffer
 		{
 			// GoldSource RCON has same structure as Query
 			$Buffer = $this->Socket->Read( );
@@ -115,7 +115,7 @@
 			return $Buffer;
 		}
 		
-		public function Command( $Command )
+		public function Command( string $Command ) : string
 		{
 			if( !$this->RconChallenge )
 			{
@@ -128,7 +128,7 @@
 			return $Buffer->Get( );
 		}
 		
-		public function Authorize( $Password )
+		public function Authorize( string $Password ) : void
 		{
 			$this->RconPassword = $Password;
 			

SourceQuery/Socket.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -25,9 +25,9 @@
 	 */
 	class Socket extends BaseSocket
 	{
-		public function Close( )
+		public function Close( ) : void
 		{
-			if( $this->Socket )
+			if( $this->Socket !== null )
 			{
 				FClose( $this->Socket );
 				
@@ -35,7 +35,7 @@
 			}
 		}
 		
-		public function Open( $Address, $Port, $Timeout, $Engine )
+		public function Open( string $Address, int $Port, int $Timeout, int $Engine ) : void
 		{
 			$this->Timeout = $Timeout;
 			$this->Engine  = $Engine;
@@ -53,7 +53,7 @@
 			Stream_Set_Blocking( $this->Socket, true );
 		}
 		
-		public function Write( $Header, $String = '' )
+		public function Write( int $Header, string $String = '' ) : bool
 		{
 			$Command = Pack( 'ccccca*', 0xFF, 0xFF, 0xFF, 0xFF, $Header, $String );
 			$Length  = StrLen( $Command );
@@ -68,7 +68,7 @@
 		 *
 		 * @return Buffer Buffer
 		 */
-		public function Read( $Length = 1400 )
+		public function Read( int $Length = 1400 ) : Buffer
 		{
 			$Buffer = new Buffer( );
 			$Buffer->Set( FRead( $this->Socket, $Length ) );
@@ -78,7 +78,7 @@
 			return $Buffer;
 		}
 		
-		public function Sherlock( $Buffer, $Length )
+		public function Sherlock( Buffer $Buffer, int $Length ) : bool
 		{
 			$Data = FRead( $this->Socket, $Length );
 			

SourceQuery/SourceQuery.php

@@ -2,7 +2,7 @@
 	/**
 	 * This class provides the public interface to the PHP-Source-Query library.
 	 *
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -12,6 +12,7 @@
 
 	namespace xPaw\SourceQuery;
 
+	use xPaw\SourceQuery\Exception\AuthenticationException;
 	use xPaw\SourceQuery\Exception\InvalidArgumentException;
 	use xPaw\SourceQuery\Exception\InvalidPacketException;
 	use xPaw\SourceQuery\Exception\SocketException;
@@ -21,6 +22,7 @@
 	 *
 	 * @package xPaw\SourceQuery
 	 *
+	 * @uses xPaw\SourceQuery\Exception\AuthenticationException
 	 * @uses xPaw\SourceQuery\Exception\InvalidArgumentException
 	 * @uses xPaw\SourceQuery\Exception\InvalidPacketException
 	 * @uses xPaw\SourceQuery\Exception\SocketException
@@ -68,37 +70,29 @@
 		/**
 		 * Points to rcon class
 		 * 
-		 * @var SourceRcon
+		 * @var SourceRcon|GoldSourceRcon|null
 		 */
 		private $Rcon;
 		
 		/**
 		 * Points to socket class
-		 * 
-		 * @var Socket
 		 */
-		private $Socket;
+		private BaseSocket $Socket;
 		
 		/**
 		 * True if connection is open, false if not
-		 * 
-		 * @var bool
 		 */
-		private $Connected;
+		private bool $Connected = false;
 		
 		/**
 		 * Contains challenge
-		 * 
-		 * @var string
 		 */
-		private $Challenge;
+		private string $Challenge = '';
 		
 		/**
 		 * Use old method for getting challenge number
-		 * 
-		 * @var bool
 		 */
-		private $UseOldGetChallengeMethod;
+		private bool $UseOldGetChallengeMethod = false;
 		
 		public function __construct( BaseSocket $Socket = null )
 		{
@@ -121,16 +115,16 @@
 		 * @throws InvalidArgumentException
 		 * @throws SocketException
 		 */
-		public function Connect( $Address, $Port, $Timeout = 3, $Engine = self::SOURCE )
+		public function Connect( string $Address, int $Port, int $Timeout = 3, int $Engine = self::SOURCE ) : void
 		{
 			$this->Disconnect( );
 			
-			if( !is_int( $Timeout ) || $Timeout < 0 )
+			if( $Timeout < 0 )
 			{
-				throw new InvalidArgumentException( 'Timeout must be an integer.', InvalidArgumentException::TIMEOUT_NOT_INTEGER );
+				throw new InvalidArgumentException( 'Timeout must be a positive integer.', InvalidArgumentException::TIMEOUT_NOT_INTEGER );
 			}
 			
-			$this->Socket->Open( $Address, (int)$Port, $Timeout, (int)$Engine );
+			$this->Socket->Open( $Address, $Port, $Timeout, $Engine );
 			
 			$this->Connected = true;
 		}
@@ -142,7 +136,7 @@
 		 *
 		 * @returns bool Previous value
 		 */
-		public function SetUseOldGetChallengeMethod( $Value )
+		public function SetUseOldGetChallengeMethod( bool $Value ) : bool
 		{
 			$Previous = $this->UseOldGetChallengeMethod;
 			
@@ -154,10 +148,10 @@
 		/**
 		 * Closes all open connections
 		 */
-		public function Disconnect( )
+		public function Disconnect( ) : void
 		{
 			$this->Connected = false;
-			$this->Challenge = 0;
+			$this->Challenge = '';
 			
 			$this->Socket->Close( );
 			
@@ -178,7 +172,7 @@
 		 *
 		 * @return bool True on success, false on failure
 		 */
-		public function Ping( )
+		public function Ping( ) : bool
 		{
 			if( !$this->Connected )
 			{
@@ -199,17 +193,34 @@
 		 *
 		 * @return array Returns an array with information on success
 		 */
-		public function GetInfo( )
+		public function GetInfo( ) : array
 		{
 			if( !$this->Connected )
 			{
 				throw new SocketException( 'Not connected.', SocketException::NOT_CONNECTED );
 			}
 			
+			if( $this->Challenge )
+			{
+				$this->Socket->Write( self::A2S_INFO, "Source Engine Query\0" . $this->Challenge );
+			}
+			else
+			{
 				$this->Socket->Write( self::A2S_INFO, "Source Engine Query\0" );
-			$Buffer = $this->Socket->Read( );
+			}
 
+			$Buffer = $this->Socket->Read( );
 			$Type = $Buffer->GetByte( );
+			$Server = [];
+			
+			if( $Type === self::S2A_CHALLENGE )
+			{
+				$this->Challenge = $Buffer->Get( 4 );
+
+				$this->Socket->Write( self::A2S_INFO, "Source Engine Query\0" . $this->Challenge );
+				$Buffer = $this->Socket->Read( );
+				$Type = $Buffer->GetByte( );
+			}
 
 			// Old GoldSource protocol, HLTV still uses it
 			if( $Type === self::S2A_INFO_OLD && $this->Socket->Engine === self::GOLDSOURCE )
@@ -235,6 +246,7 @@
 				
 				if( $Server[ 'IsMod' ] )
 				{
+					$Mod = [];
 					$Mod[ 'Url' ]        = $Buffer->GetString( );
 					$Mod[ 'Download' ]   = $Buffer->GetString( );
 					$Buffer->Get( 1 ); // NULL byte
@@ -242,16 +254,12 @@
 					$Mod[ 'Size' ]       = $Buffer->GetLong( );
 					$Mod[ 'ServerSide' ] = $Buffer->GetByte( ) === 1;
 					$Mod[ 'CustomDLL' ]  = $Buffer->GetByte( ) === 1;
+					$Server[ 'Mod' ] = $Mod;
 				}
 				
 				$Server[ 'Secure' ]   = $Buffer->GetByte( ) === 1;
 				$Server[ 'Bots' ]     = $Buffer->GetByte( );
 				
-				if( isset( $Mod ) )
-				{
-					$Server[ 'Mod' ] = $Mod;
-				}
-				
 				return $Server;
 			}
 			
@@ -289,13 +297,13 @@
 			{
 				$Server[ 'ExtraDataFlags' ] = $Flags = $Buffer->GetByte( );
 				
-				// The server's game port
+				// S2A_EXTRA_DATA_HAS_GAME_PORT - Next 2 bytes include the game port.
 				if( $Flags & 0x80 )
 				{
 					$Server[ 'GamePort' ] = $Buffer->GetShort( );
 				}
 				
-				// The server's steamid
+				// S2A_EXTRA_DATA_HAS_STEAMID - Next 8 bytes are the steamID
 				// Want to play around with this?
 				// You can use https://github.com/xPaw/SteamID.php
 				if( $Flags & 0x10 )
@@ -327,20 +335,20 @@
 					unset( $SteamIDLower, $SteamIDInstance, $SteamID );
 				}
 				
-				// The spectator port and then the spectator server name
+				// S2A_EXTRA_DATA_HAS_SPECTATOR_DATA - Next 2 bytes include the spectator port, then the spectator server name.
 				if( $Flags & 0x40 )
 				{
 					$Server[ 'SpecPort' ] = $Buffer->GetShort( );
 					$Server[ 'SpecName' ] = $Buffer->GetString( );
 				}
 				
-				// The game tag data string for the server
+				// S2A_EXTRA_DATA_HAS_GAMETAG_DATA - Next bytes are the game tag string
 				if( $Flags & 0x20 )
 				{
 					$Server[ 'GameTags' ] = $Buffer->GetString( );
 				}
 				
-				// GameID -- alternative to AppID?
+				// S2A_EXTRA_DATA_GAMEID - Next 8 bytes are the gameID of the server
 				if( $Flags & 0x01 )
 				{
 					$Server[ 'GameID' ] = $Buffer->GetUnsignedLong( ) | ( $Buffer->GetUnsignedLong( ) << 32 ); 
@@ -364,7 +372,7 @@
 		 * 
 		 * @return array Returns an array with players on success
 		 */
-		public function GetPlayers( )
+		public function GetPlayers( ) : array
 		{
 			if( !$this->Connected )
 			{
@@ -389,6 +397,7 @@
 			
 			while( $Count-- > 0 && $Buffer->Remaining( ) > 0 )
 			{
+				$Player = [];
 				$Player[ 'Id' ]    = $Buffer->GetByte( ); // PlayerID, is it just always 0?
 				$Player[ 'Name' ]  = $Buffer->GetString( );
 				$Player[ 'Frags' ] = $Buffer->GetLong( );
@@ -409,7 +418,7 @@
 		 *
 		 * @return array Returns an array with rules on success
 		 */
-		public function GetRules( )
+		public function GetRules( ) : array
 		{
 			if( !$this->Connected )
 			{
@@ -448,12 +457,9 @@
 		/**
 		 * Get challenge (used for players/rules packets)
 		 *
-		 * @param $Header
-		 * @param $ExpectedResult
-		 *
 		 * @throws InvalidPacketException
 		 */
-		private function GetChallenge( $Header, $ExpectedResult )
+		private function GetChallenge( int $Header, int $ExpectedResult ) : void
 		{
 			if( $this->Challenge )
 			{
@@ -504,7 +510,7 @@
 		 * @throws InvalidPacketException
 		 * @throws SocketException
 		 */
-		public function SetRconPassword( $Password )
+		public function SetRconPassword( string $Password ) : void
 		{
 			if( !$this->Connected )
 			{
@@ -525,6 +531,10 @@
 					
 					break;
 				}
+				default:
+				{
+					throw new SocketException( 'Unknown engine.', SocketException::INVALID_ENGINE );
+				}
 			}
 			
 			$this->Rcon->Open( );
@@ -542,7 +552,7 @@
 		 *
 		 * @return string Answer from server in string
 		 */
-		public function Rcon( $Command )
+		public function Rcon( string $Command ) : string
 		{
 			if( !$this->Connected )
 			{

SourceQuery/SourceRcon.php

@@ -1,6 +1,6 @@
 <?php
 	/**
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query
@@ -29,20 +29,19 @@
 	{
 		/**
 		 * Points to socket class
-		 * 
-		 * @var Socket
 		 */
-		private $Socket;
+		private BaseSocket $Socket;
 		
+		/** @var resource */
 		private $RconSocket;
-		private $RconRequestId;
+		private int $RconRequestId = 0;
 		
-		public function __construct( $Socket )
+		public function __construct( BaseSocket $Socket )
 		{
 			$this->Socket = $Socket;
 		}
 		
-		public function Close( )
+		public function Close( ) : void
 		{
 			if( $this->RconSocket )
 			{
@@ -54,7 +53,7 @@
 			$this->RconRequestId = 0;
 		}
 		
-		public function Open( )
+		public function Open( ) : void
 		{
 			if( !$this->RconSocket )
 			{
@@ -70,7 +69,7 @@
 			}
 		}
 		
-		public function Write( $Header, $String = '' )
+		public function Write( int $Header, string $String = '' ) : bool
 		{
 			// Pack the packet together
 			$Command = Pack( 'VV', ++$this->RconRequestId, $Header ) . $String . "\x00\x00"; 
@@ -82,7 +81,7 @@
 			return $Length === FWrite( $this->RconSocket, $Command, $Length );
 		}
 		
-		public function Read( )
+		public function Read( ) : Buffer
 		{
 			$Buffer = new Buffer( );
 			$Buffer->Set( FRead( $this->RconSocket, 4 ) );
@@ -122,7 +121,7 @@
 			return $Buffer;
 		}
 		
-		public function Command( $Command )
+		public function Command( string $Command ) : string
 		{
 			$this->Write( SourceQuery::SERVERDATA_EXECCOMMAND, $Command );
 			$Buffer = $this->Read( );
@@ -174,7 +173,7 @@
 			return rtrim( $Data, "\0" );
 		}
 		
-		public function Authorize( $Password )
+		public function Authorize( string $Password ) : void
 		{
 			$this->Write( SourceQuery::SERVERDATA_AUTH, $Password );
 			$Buffer = $this->Read( );

SourceQuery/bootstrap.php

@@ -5,7 +5,7 @@
 	 * Special thanks to koraktor for his awesome Steam Condenser class,
 	 * I used it as a reference at some points.
 	 *
-	 * @author Pavel Djundik <sourcequery@xpaw.me>
+	 * @author Pavel Djundik
 	 *
 	 * @link https://xpaw.me
 	 * @link https://github.com/xPaw/PHP-Source-Query

Tests/Tests.php

@@ -1,13 +1,12 @@
 <?php
 	use PHPUnit\Framework\TestCase;
 	use xPaw\SourceQuery\BaseSocket;
-	use xPaw\SourceQuery\Exception\InvalidPacketException;
 	use xPaw\SourceQuery\SourceQuery;
 	use xPaw\SourceQuery\Buffer;
 	
 	class TestableSocket extends BaseSocket
 	{
-		private $PacketQueue;
+		private \SplQueue $PacketQueue;
 		
 		public function __construct( )
 		{
@@ -16,17 +15,17 @@
 			
 		}
 		
-		public function Queue( $Data )
+		public function Queue( string $Data ) : void
 		{
 			$this->PacketQueue->push( $Data );
 		}
 		
-		public function Close( )
+		public function Close( ) : void
 		{
 			//
 		}
 		
-		public function Open( $Address, $Port, $Timeout, $Engine )
+		public function Open( string $Address, int $Port, int $Timeout, int $Engine ) : void
 		{
 			$this->Timeout = $Timeout;
 			$this->Engine  = $Engine;
@@ -34,85 +33,77 @@
 			$this->Address = $Address;
 		}
 		
-		public function Write( $Header, $String = '' )
+		public function Write( int $Header, string $String = '' ) : bool
 		{
-			//
+			return true;
 		}
 		
-		public function Read( $Length = 1400 )
+		public function Read( int $Length = 1400 ) : Buffer
 		{
 			$Buffer = new Buffer( );
-			$Buffer->Set( $this->PacketQueue->shift() );
+			$Buffer->Set( (string)$this->PacketQueue->shift() );
 			
 			$this->ReadInternal( $Buffer, $Length, [ $this, 'Sherlock' ] );
 			
 			return $Buffer;
 		}
 		
-		public function Sherlock( $Buffer, $Length )
+		public function Sherlock( Buffer $Buffer, int $Length ) : bool
 		{
 			if( $this->PacketQueue->isEmpty() )
 			{
 				return false;
 			}
 			
-			$Buffer->Set( $this->PacketQueue->shift() );
+			$Buffer->Set( (string)$this->PacketQueue->shift() );
 			
 			return $Buffer->GetLong( ) === -2;
 		}
 	}
 	
-	class SourceQueryTests extends TestCase
+	class Tests extends \PHPUnit\Framework\TestCase
 	{
-		private $Socket;
-		private $SourceQuery;
+		private TestableSocket $Socket;
+		private SourceQuery $SourceQuery;
 		
-		public function setUp()
+		public function setUp() : void
 		{
 			$this->Socket = new TestableSocket();
 			$this->SourceQuery = new SourceQuery( $this->Socket );
-			$this->SourceQuery->Connect( 1, 2 );
+			$this->SourceQuery->Connect( '', 2 );
 		}
 		
-		public function tearDown()
+		public function tearDown() : void
 		{
 			$this->SourceQuery->Disconnect();
 			
 			unset( $this->Socket, $this->SourceQuery );
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\InvalidArgumentException
-		 */
-		public function testInvalidTimeout()
+		public function testInvalidTimeout() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\InvalidArgumentException::class );
 			$SourceQuery = new SourceQuery( );
-			$SourceQuery->Connect( 1, 2, -1 );
+			$SourceQuery->Connect( '', 2, -1 );
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testNotConnectedGetInfo()
+		public function testNotConnectedGetInfo() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->GetInfo();
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testNotConnectedPing()
+		public function testNotConnectedPing() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->Ping();
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testNotConnectedGetPlayers()
+		public function testNotConnectedGetPlayers() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->GetPlayers();
 		}
@@ -120,42 +111,37 @@
 		/**
 		 * @expectedException xPaw\SourceQuery\Exception\SocketException
 		 */
-		public function testNotConnectedGetRules()
+		public function testNotConnectedGetRules() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->GetRules();
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testNotConnectedSetRconPassword()
+		public function testNotConnectedSetRconPassword() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->SetRconPassword('a');
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testNotConnectedRcon()
+		public function testNotConnectedRcon() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Disconnect();
 			$this->SourceQuery->Rcon('a');
 		}
 		
-		/**
-		 * @expectedException xPaw\SourceQuery\Exception\SocketException
-		 */
-		public function testRconWithoutPassword()
+		public function testRconWithoutPassword() : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\SocketException::class );
 			$this->SourceQuery->Rcon('a');
 		}
 		
 		/**
 		 * @dataProvider InfoProvider
 		 */
-		public function testGetInfo( $RawInput, $ExpectedOutput )
+		public function testGetInfo( string $RawInput, array $ExpectedOutput ) : void
 		{
 			if( isset( $ExpectedOutput[ 'IsMod' ] ) )
 			{
@@ -169,7 +155,7 @@
 			$this->assertEquals( $ExpectedOutput, $RealOutput );
 		}
 		
-		public function InfoProvider()
+		public function InfoProvider() : array
 		{
 			$DataProvider = [];
 			
@@ -188,33 +174,33 @@
 		}
 		
 		/**
-		 * @expectedException xPaw\SourceQuery\Exception\InvalidPacketException
 		 * @dataProvider BadPacketProvider
 		 */
-		public function testBadGetInfo( $Data )
+		public function testBadGetInfo( string $Data ) : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\InvalidPacketException::class );
 			$this->Socket->Queue( $Data );
 			
 			$this->SourceQuery->GetInfo();
 		}
 		
 		/**
-		 * @expectedException xPaw\SourceQuery\Exception\InvalidPacketException
 		 * @dataProvider BadPacketProvider
 		 */
-		public function testBadGetChallengeViaPlayers( $Data )
+		public function testBadGetChallengeViaPlayers( string $Data ) : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\InvalidPacketException::class );
 			$this->Socket->Queue( $Data );
 			
 			$this->SourceQuery->GetPlayers();
 		}
 		
 		/**
-		 * @expectedException xPaw\SourceQuery\Exception\InvalidPacketException
 		 * @dataProvider BadPacketProvider
 		 */
-		public function testBadGetPlayersAfterCorrectChallenge( $Data )
+		public function testBadGetPlayersAfterCorrectChallenge( string $Data ) : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\InvalidPacketException::class );
 			$this->Socket->Queue( "\xFF\xFF\xFF\xFF\x41\x11\x11\x11\x11" );
 			$this->Socket->Queue( $Data );
 			
@@ -222,18 +208,18 @@
 		}
 		
 		/**
-		 * @expectedException xPaw\SourceQuery\Exception\InvalidPacketException
 		 * @dataProvider BadPacketProvider
 		 */
-		public function testBadGetRulesAfterCorrectChallenge( $Data )
+		public function testBadGetRulesAfterCorrectChallenge( string $Data ) : void
 		{
+			$this->expectException( xPaw\SourceQuery\Exception\InvalidPacketException::class );
 			$this->Socket->Queue( "\xFF\xFF\xFF\xFF\x41\x11\x11\x11\x11" );
 			$this->Socket->Queue( $Data );
 			
 			$this->SourceQuery->GetRules();
 		}
 		
-		public function BadPacketProvider( )
+		public function BadPacketProvider( ) : array
 		{
 			return
 			[
@@ -247,7 +233,7 @@
 			];
 		}
 		
-		public function testGetChallengeTwice( )
+		public function testGetChallengeTwice( ) : void
 		{
 			$this->Socket->Queue( "\xFF\xFF\xFF\xFF\x41\x11\x11\x11\x11" );
 			$this->Socket->Queue( "\xFF\xFF\xFF\xFF\x45\x01\x00ayy\x00lmao\x00" );
@@ -260,7 +246,7 @@
 		/**
 		 * @dataProvider RulesProvider
 		 */
-		public function testGetRules( $RawInput, $ExpectedOutput )
+		public function testGetRules( array $RawInput, array $ExpectedOutput ) : void
 		{
 			$this->Socket->Queue( hex2bin( "ffffffff4104fce20e" ) ); // Challenge
 			
@@ -274,7 +260,7 @@
 			$this->assertEquals( $ExpectedOutput, $RealOutput );
 		}
 		
-		public function RulesProvider()
+		public function RulesProvider() : array
 		{
 			$DataProvider = [];
 			
@@ -295,7 +281,7 @@
 		/**
 		 * @dataProvider PlayersProvider
 		 */
-		public function testGetPlayers( $RawInput, $ExpectedOutput )
+		public function testGetPlayers( array $RawInput, array $ExpectedOutput ) : void
 		{
 			$this->Socket->Queue( hex2bin( "ffffffff4104fce20e" ) ); // Challenge
 			
@@ -309,7 +295,7 @@
 			$this->assertEquals( $ExpectedOutput, $RealOutput );
 		}
 		
-		public function PlayersProvider()
+		public function PlayersProvider() : array
 		{
 			$DataProvider = [];
 			
@@ -327,7 +313,7 @@
 			return $DataProvider;
 		}
 		
-		public function testPing()
+		public function testPing() : void
 		{
 			$this->Socket->Queue( "\xFF\xFF\xFF\xFF\x6A\x00");
 			$this->assertTrue( $this->SourceQuery->Ping() );

composer.json

@@ -4,13 +4,6 @@
 	"homepage": "https://github.com/xPaw/PHP-Source-Query",
 	"type": "library",
 	"license": "LGPL-2.1",
-	"authors":
-	[
-		{
-			"name": "Pavel Djundik",
-			"email": "sourcequery@xpaw.me"
-		}
-	],
 	"keywords":
 	[
 		"rcon",
@@ -25,12 +18,12 @@
 	],
 	"require":
 	{
-		"php": ">=7.2"
+		"php": ">=7.4"
 	},
 	"require-dev":
 	{
-		"phpunit/phpunit": "^6.0",
-		"php-coveralls/php-coveralls": "^2.1"
+		"phpunit/phpunit": "9.2",
+		"vimeo/psalm": "^3.12"
 	},
 	"autoload":
 	{

psalm.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="1"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="SourceQuery" />
+        <directory name="Tests" />
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>