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<?php |
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namespace React\Socket; |
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use Evenement\EventEmitter; |
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use React\EventLoop\LoopInterface; |
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final class SocketServer extends EventEmitter implements ServerInterface |
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{ |
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private $server; |
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/** |
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* The `SocketServer` class is the main class in this package that implements the `ServerInterface` and |
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* allows you to accept incoming streaming connections, such as plaintext TCP/IP or secure TLS connection streams. |
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* |
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* ```php |
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* $socket = new React\Socket\SocketServer('127.0.0.1:0'); |
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* $socket = new React\Socket\SocketServer('127.0.0.1:8000'); |
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* $socket = new React\Socket\SocketServer('127.0.0.1:8000', $context); |
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* ``` |
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* |
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* This class takes an optional `LoopInterface|null $loop` parameter that can be used to |
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* pass the event loop instance to use for this object. You can use a `null` value |
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* here in order to use the [default loop](https://github.com/reactphp/event-loop#loop). |
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* This value SHOULD NOT be given unless you're sure you want to explicitly use a |
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* given event loop instance. |
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* |
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* @param string $uri |
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* @param array $context |
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* @param ?LoopInterface $loop |
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* @throws \InvalidArgumentException if the listening address is invalid |
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* @throws \RuntimeException if listening on this address fails (already in use etc.) |
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*/ |
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public function __construct($uri, array $context = array(), LoopInterface $loop = null) |
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{ |
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// apply default options if not explicitly given |
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$context += array( |
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'tcp' => array(), |
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'tls' => array(), |
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'unix' => array() |
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); |
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$scheme = 'tcp'; |
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$pos = \strpos($uri, '://'); |
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if ($pos !== false) { |
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$scheme = \substr($uri, 0, $pos); |
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} |
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if ($scheme === 'unix') { |
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$server = new UnixServer($uri, $loop, $context['unix']); |
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} elseif ($scheme === 'php') { |
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$server = new FdServer($uri, $loop); |
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} else { |
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if (preg_match('#^(?:\w+://)?\d+$#', $uri)) { |
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throw new \InvalidArgumentException( |
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'Invalid URI given (EINVAL)', |
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\defined('SOCKET_EINVAL') ? \SOCKET_EINVAL : 22 |
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); |
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} |
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$server = new TcpServer(str_replace('tls://', '', $uri), $loop, $context['tcp']); |
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if ($scheme === 'tls') { |
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$server = new SecureServer($server, $loop, $context['tls']); |
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} |
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} |
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$this->server = $server; |
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$that = $this; |
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$server->on('connection', function (ConnectionInterface $conn) use ($that) { |
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$that->emit('connection', array($conn)); |
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}); |
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$server->on('error', function (\Exception $error) use ($that) { |
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$that->emit('error', array($error)); |
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}); |
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} |
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public function getAddress() |
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{ |
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return $this->server->getAddress(); |
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} |
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public function pause() |
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{ |
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$this->server->pause(); |
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} |
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public function resume() |
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{ |
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$this->server->resume(); |
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} |
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public function close() |
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{ |
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$this->server->close(); |
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} |
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/** |
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* [internal] Internal helper method to accept new connection from given server socket |
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* |
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* @param resource $socket server socket to accept connection from |
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* @return resource new client socket if any |
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* @throws \RuntimeException if accepting fails |
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* @internal |
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*/ |
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public static function accept($socket) |
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{ |
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$newSocket = @\stream_socket_accept($socket, 0); |
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if (false === $newSocket) { |
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// Match errstr from PHP's warning message. |
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// stream_socket_accept(): accept failed: Connection timed out |
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$error = \error_get_last(); |
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$errstr = \preg_replace('#.*: #', '', $error['message']); |
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$errno = self::errno($errstr); |
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throw new \RuntimeException( |
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'Unable to accept new connection: ' . $errstr . self::errconst($errno), |
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$errno |
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); |
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} |
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return $newSocket; |
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} |
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/** |
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* [Internal] Returns errno value for given errstr |
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* |
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* The errno and errstr values describes the type of error that has been |
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* encountered. This method tries to look up the given errstr and find a |
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* matching errno value which can be useful to provide more context to error |
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* messages. It goes through the list of known errno constants when |
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* ext-sockets is available to find an errno matching the given errstr. |
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* |
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* @param string $errstr |
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* @return int errno value (e.g. value of `SOCKET_ECONNREFUSED`) or 0 if not found |
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* @internal |
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* @copyright Copyright (c) 2018 Christian Lück, taken from https://github.com/clue/errno with permission |
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* @codeCoverageIgnore |
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*/ |
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public static function errno($errstr) |
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{ |
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if (\function_exists('socket_strerror')) { |
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foreach (\get_defined_constants(false) as $name => $value) { |
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if (\strpos($name, 'SOCKET_E') === 0 && \socket_strerror($value) === $errstr) { |
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return $value; |
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} |
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} |
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} |
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return 0; |
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} |
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/** |
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* [Internal] Returns errno constant name for given errno value |
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* |
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* The errno value describes the type of error that has been encountered. |
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* This method tries to look up the given errno value and find a matching |
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* errno constant name which can be useful to provide more context and more |
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* descriptive error messages. It goes through the list of known errno |
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* constants when ext-sockets is available to find the matching errno |
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* constant name. |
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* |
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* Because this method is used to append more context to error messages, the |
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* constant name will be prefixed with a space and put between parenthesis |
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* when found. |
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* |
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* @param int $errno |
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* @return string e.g. ` (ECONNREFUSED)` or empty string if no matching const for the given errno could be found |
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* @internal |
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* @copyright Copyright (c) 2018 Christian Lück, taken from https://github.com/clue/errno with permission |
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* @codeCoverageIgnore |
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*/ |
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public static function errconst($errno) |
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{ |
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if (\function_exists('socket_strerror')) { |
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foreach (\get_defined_constants(false) as $name => $value) { |
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if ($value === $errno && \strpos($name, 'SOCKET_E') === 0) { |
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return ' (' . \substr($name, 7) . ')'; |
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} |
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} |
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} |
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return ''; |
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} |
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} |
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deployphp /
deployer
