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<?php |
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/** |
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* Async sockets |
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* |
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* @copyright Copyright (c) 2015-2017, Efimov Evgenij <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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namespace AsyncSockets\Socket; |
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use AsyncSockets\Exception\ConnectionException; |
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use AsyncSockets\Frame\FramePickerInterface; |
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use AsyncSockets\Socket\Io\AbstractIo; |
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use AsyncSockets\Socket\Io\Context; |
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use AsyncSockets\Socket\Io\DisconnectedIo; |
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use AsyncSockets\Socket\Io\IoInterface; |
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/** |
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* Class AbstractSocket |
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*/ |
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abstract class AbstractSocket implements SocketInterface |
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{ |
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/** |
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* Tcp socket type |
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*/ |
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const SOCKET_TYPE_TCP = 'tcp'; |
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/** |
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* Udp socket type |
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*/ |
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const SOCKET_TYPE_UDP = 'udp'; |
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/** |
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* Unix socket type |
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*/ |
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const SOCKET_TYPE_UNIX = 'unix'; |
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/** |
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* Unix datagram socket type |
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*/ |
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const SOCKET_TYPE_UDG = 'udg'; |
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/** |
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* Unknown type of socket |
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*/ |
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const SOCKET_TYPE_UNKNOWN = ''; |
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/** |
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* This socket resource |
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* |
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* @var resource |
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*/ |
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private $resource; |
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/** |
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* I/O interface |
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* |
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* @var IoInterface |
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*/ |
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private $ioInterface; |
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/** |
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* Socket address |
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* |
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* @var string |
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*/ |
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private $remoteAddress; |
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/** |
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* Context for this socket |
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* |
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* @var Context |
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*/ |
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private $context; |
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/** |
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* AbstractSocket constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->setDisconnectedState(); |
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$this->context = new Context(); |
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} |
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/** |
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* Set disconnected state for socket |
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* |
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* @return void |
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*/ |
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private function setDisconnectedState() |
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{ |
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$this->ioInterface = new DisconnectedIo($this); |
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} |
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/** {@inheritdoc} */ |
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public function open($address, $context = null) |
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{ |
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$this->resource = $this->createSocketResource( |
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$address, |
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$context ?: stream_context_get_default() |
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); |
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if (!is_resource($this->resource)) { |
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throw new ConnectionException( |
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$this, |
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'Can not allocate socket resource.' |
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); |
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} |
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$this->remoteAddress = $address; |
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// https://bugs.php.net/bug.php?id=51056 |
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stream_set_blocking($this->resource, 0); |
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// https://bugs.php.net/bug.php?id=52602 |
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stream_set_timeout($this->resource, 0, 0); |
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stream_set_chunk_size($this->resource, AbstractIo::SOCKET_BUFFER_SIZE); |
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$this->ioInterface = $this->createIoInterface( |
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$this->resolveSocketType(), |
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$address |
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); |
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$this->context->reset(); |
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} |
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/** {@inheritdoc} */ |
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public function close() |
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{ |
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if ($this->resource) { |
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$this->setDisconnectedState(); |
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stream_socket_shutdown($this->resource, STREAM_SHUT_RDWR); |
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fclose($this->resource); |
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$this->resource = null; |
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$this->remoteAddress = null; |
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} |
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} |
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/** {@inheritdoc} */ |
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public function read(FramePickerInterface $picker, $isOutOfBand = false) |
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{ |
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try { |
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return $this->ioInterface->read($picker, $this->context, $isOutOfBand); |
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} catch (ConnectionException $e) { |
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$this->setDisconnectedState(); |
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throw $e; |
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} |
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} |
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/** {@inheritdoc} */ |
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public function write($data, $isOutOfBand = false) |
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{ |
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try { |
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return $this->ioInterface->write($data, $this->context, $isOutOfBand); |
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} catch (ConnectionException $e) { |
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$this->setDisconnectedState(); |
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throw $e; |
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} |
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} |
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/** {@inheritdoc} */ |
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public function getStreamResource() |
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{ |
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return $this->resource; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function __toString() |
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{ |
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return $this->remoteAddress ? |
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sprintf( |
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'[#%s, %s]', |
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preg_replace('/Resource id #(\d+)/i', '$1', (string) $this->resource), |
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$this->remoteAddress |
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) : |
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'[closed socket]'; |
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} |
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/** |
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* Create certain socket resource |
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* |
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* @param string $address Network address to open in form transport://path:port |
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* @param resource $context Valid stream context created by function stream_context_create or null |
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* |
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* @return resource |
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*/ |
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abstract protected function createSocketResource($address, $context); |
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/** |
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* Create I/O interface for socket |
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* |
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* @param string $type Type of this socket, one of SOCKET_TYPE_* consts |
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* @param string $address Address passed to open method |
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* |
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* @return IoInterface |
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*/ |
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abstract protected function createIoInterface($type, $address); |
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/** |
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* Get current socket type |
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* |
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* @return string One of SOCKET_TYPE_* consts |
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*/ |
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private function resolveSocketType() |
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{ |
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$info = stream_get_meta_data($this->resource); |
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if (!isset($info['stream_type'])) { |
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return self::SOCKET_TYPE_UNKNOWN; |
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} |
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$parts = explode('/', $info['stream_type']); |
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$map = [ |
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'tcp' => self::SOCKET_TYPE_TCP, |
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'udp' => self::SOCKET_TYPE_UDP, |
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'udg' => self::SOCKET_TYPE_UDG, |
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'unix' => self::SOCKET_TYPE_UNIX, |
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]; |
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$regexp = '#^('. implode('|', array_keys($map)) . ')_socket$#'; |
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foreach ($parts as $part) { |
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if (preg_match($regexp, $part, $pockets)) { |
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return $map[$pockets[1]]; |
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} |
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} |
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return self::SOCKET_TYPE_UNKNOWN; |
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} |
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} |
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|
edefimov /
async-sockets
