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<?php |
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/** |
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* This file is part of Dedipanel project |
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* |
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* (c) 2010-2015 Dedipanel <http://www.dedicated-panel.net> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace DP\GameServer\GameServerBundle\Socket; |
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use DP\GameServer\GameServerBundle\Socket\Packet; |
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use DP\GameServer\GameServerBundle\Socket\Exception\CreateSocketException; |
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use DP\GameServer\GameServerBundle\Socket\Exception\ConnectionFailedException; |
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use DP\GameServer\GameServerBundle\Socket\Exception\NotConnectedException; |
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use DP\GameServer\GameServerBundle\Socket\Exception\SendDataException; |
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use DP\GameServer\GameServerBundle\Socket\Exception\RecvDataException; |
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use DP\GameServer\GameServerBundle\Socket\Exception\RecvTimeoutException; |
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/** |
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* @author Albin Kerouanton |
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* |
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* @todo ajout support IPv6 |
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* @todo ajout callbacks pre/postSend, preRecv & del 1 callback postRecv |
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*/ |
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class Socket |
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{ |
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private $ip; |
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private $port; |
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private $type; |
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private $timeout; |
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private $socket; |
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private $connected; |
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private $callbacks; |
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const MTU = 1400; |
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const MULTI_DETECTOR = 'isMultiResp'; |
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const MULTI_RECEIVER = 'recvMultiResp'; |
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/** |
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* Constructor |
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* |
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* @param string $ip |
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* @param int $port |
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* @param string $type (tcp/udp) |
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* @param array $timeout (0 => timeout sec, 1 => timeout usec) |
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* @param array $callbacks Array of callbacks |
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*/ |
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public function __construct( |
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$ip, $port, $type, array $timeout, $callbacks = null) |
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{ |
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$this->ip = $ip; |
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$this->port = $port; |
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$this->type = $type; |
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$this->timeout = $timeout; |
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$this->connected = false; |
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$this->callbacks = $callbacks; |
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View Code Duplication |
if (isset($callbacks[self::MULTI_DETECTOR]) && is_callable($callbacks[self::MULTI_DETECTOR])) { |
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$this->callbacks[self::MULTI_DETECTOR] = $callbacks[self::MULTI_DETECTOR]; |
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} |
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View Code Duplication |
if (isset($callbacks[self::MULTI_RECEIVER]) && is_callable($callbacks[self::MULTI_RECEIVER])) { |
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$this->callbacks[self::MULTI_RECEIVER] = $callbacks[self::MULTI_RECEIVER]; |
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} |
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} |
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/** |
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* Connect to the server |
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* |
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* @throws CreateSocketException |
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* @throws ConnectionFailedException |
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*/ |
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public function connect() |
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{ |
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$domain = AF_INET; |
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if ($this->isIPv6()) $domain = AF_INET6; |
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if ($this->type == 'tcp') { |
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$type = SOCK_STREAM; |
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$proto = SOL_TCP; |
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} |
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elseif ($this->type == 'udp') { |
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$type = SOCK_DGRAM; |
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$proto = SOL_UDP; |
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} |
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else { |
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$type = SOCK_RAW; |
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$proto = SOL_ICMP; |
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} |
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$this->socket = socket_create($domain, $type, $proto); |
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if ($this->socket === false) { |
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throw new CreateSocketException($type, $this->getLastError()); |
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} |
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// On défini la socket comme étant bloquante |
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// Et on défini le timeout |
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socket_set_block($this->socket); |
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socket_set_option($this->socket, SOL_SOCKET, SO_SNDTIMEO, array('sec' => $this->timeout[0], 'usec' => $this->timeout[1])); |
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socket_set_option($this->socket, SOL_SOCKET, SO_RCVTIMEO, array('sec' => $this->timeout[0], 'usec' => $this->timeout[1])); |
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$connect = @socket_connect($this->socket, $this->ip, $this->port); |
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if (!$connect) { |
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throw new ConnectionFailedException($this->getLastError()); |
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} |
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else { |
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$this->connected = true; |
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} |
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return true; |
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} |
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/** |
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* Disconnect the socket |
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*/ |
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public function disconnect() |
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{ |
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if (!$this->connected) { |
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throw new NotConnectedException('The socket is already disconnected.'); |
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} |
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$this->connected = false; |
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socket_close($this->socket); |
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unset($this->socket); |
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} |
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/** |
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* Send a packet |
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* |
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* @param Packet $packet |
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* |
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* @return integer Data length sended |
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* |
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* @throws NotConnectedException |
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* @throws SendDataException |
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*/ |
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public function send(Packet $packet) |
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{ |
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if (!$this->connected) { |
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throw new NotConnectedException('Can\'t send data when the socket is disconnected.'); |
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} |
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$len = $packet->getLength(); |
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$send = socket_send($this->socket, $packet, $len, 0); |
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if ($send === null || $send != $len) { |
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throw new SendDataException($this->getLastError()); |
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} |
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return $send; |
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} |
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/** |
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* Receive a packet |
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* |
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* @param bool $multiPacket |
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* @param double $packetLength |
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* @return \DP\GameServer\GameServerBundle\Socket\Packet |
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* @throws NotConnectedException |
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* @throws RecvTimeoutException |
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* @throws RecvDataException |
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*/ |
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public function recv($multiPacket = true, $packetLength = Socket::MTU) |
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{ |
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if (!$this->connected) { |
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throw new NotConnectedException('Can\'t recv data when the socket is disconnected.'); |
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} |
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// On souhaite uniquement lire la socket actuelle |
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$read = array($this->socket); |
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$write = array(); |
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$except = array(); |
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// On attend la modif de celle-ci jusqu'au timeout (en sec et usec) |
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// socket_select renvoie le nombre de socket modifiés |
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// N'ayant passé qu'une socket, si celle-ci est modifié |
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// C'est que des données sont arrivés. |
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$select = socket_select($read, $write, $except, $this->timeout[0], $this->timeout[1]); |
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// select() renvoie toujours les sockets udp (puisqu'elles sont connectionless) |
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// On doit donc vérifier que l'on reçoit bien des données |
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// S'il a bien des données d'arrivés, on les récupères |
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// Et on exécute les 2 callbacks de post réception si nécessaire (et si possible) |
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// Ceux-ci servant à traiter les cas de réception multi-packets (notamment pour l'UDP) |
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if ($select == 1) { |
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if ($packetLength > Socket::MTU) $packetLength = Socket::MTU; |
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$content = @socket_read($this->socket, $packetLength, PHP_BINARY_READ); |
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View Code Duplication |
if ($this->type == 'udp' && $content == null) { |
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$this->connected = false; |
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throw new RecvTimeoutException($this->getLastError()); |
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} |
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$read = new Packet($content); |
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if ($multiPacket && is_array($this->callbacks) && !empty($this->callbacks)) { |
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if (count($this->callbacks) == 2 |
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&& is_callable($this->callbacks[self::MULTI_DETECTOR]) |
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&& is_callable($this->callbacks[self::MULTI_RECEIVER])) { |
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$isMultiPacketResp = call_user_func($this->callbacks[self::MULTI_DETECTOR], $read); |
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if ($isMultiPacketResp) { |
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$read = call_user_func($this->callbacks[self::MULTI_RECEIVER], $read, $this); |
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} |
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} |
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} |
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return $read; |
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} |
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View Code Duplication |
elseif ($select === 0) { |
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if ($this->type == 'udp') { |
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$this->connected = false; |
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} |
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throw new RecvTimeoutException($this->getLastError()); |
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} |
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else { |
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$this->connected = false; |
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throw new RecvDataException($this->getLastError()); |
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} |
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} |
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/** |
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* Get socket buffer size |
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* @return int |
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*/ |
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public function getSocketBufferSize() |
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{ |
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return socket_get_option($this->socket, SOL_SOCKET, SO_RCVBUF); |
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} |
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/** |
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* Get the last error message |
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* @return string |
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*/ |
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private function getLastError() |
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{ |
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return socket_strerror(socket_last_error()); |
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} |
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/** |
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* Set IP |
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* |
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* @param string $ip |
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*/ |
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public function setIp($ip) |
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{ |
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$this->ip = $ip; |
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} |
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/** |
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* Get IP |
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* |
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* @return string |
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*/ |
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public function getIp() |
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{ |
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return $this->ip; |
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} |
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/** |
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* Verify if IP is v6 |
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* |
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* @todo Add IPv6 support |
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* @return bool |
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*/ |
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public function isIPv6() |
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{ |
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return false; |
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} |
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/** |
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* Set port |
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* |
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* @param int $port |
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*/ |
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public function setPort($port) |
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{ |
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$this->port = $port; |
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} |
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/** |
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* Get port |
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* |
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* @return int |
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*/ |
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public function getPort() |
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{ |
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return $this->port; |
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} |
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/** |
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* Set type (tcp or udp) |
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* |
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* @param int $type |
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*/ |
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public function setType($type) |
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{ |
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$this->type = $type; |
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} |
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/** |
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* Get type (tcp or udp) |
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* |
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* @return int |
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*/ |
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public function getType() |
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{ |
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return $this->type; |
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} |
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/** |
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* Get socket status (connected or not) |
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* |
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* @return bool |
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*/ |
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public function isConnected() |
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{ |
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return $this->connected; |
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} |
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} |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.