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liveuser |
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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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use InvalidArgumentException;
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use RuntimeException;
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/**
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* The `UnixServer` class implements the `ServerInterface` and
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* is responsible for accepting plaintext connections on unix domain sockets.
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*
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* ```php
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* $server = new React\Socket\UnixServer('unix:///tmp/app.sock', $loop);
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* ```
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*
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* See also the `ServerInterface` for more details.
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*
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* @see ServerInterface
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* @see ConnectionInterface
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*/
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final class UnixServer extends EventEmitter implements ServerInterface
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{
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private $master;
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private $loop;
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private $listening = false;
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/**
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* Creates a plaintext socket server and starts listening on the given unix socket
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*
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* This starts accepting new incoming connections on the given address.
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* See also the `connection event` documented in the `ServerInterface`
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* for more details.
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*
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* ```php
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* $server = new React\Socket\UnixServer('unix:///tmp/app.sock', $loop);
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* ```
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*
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* @param string $path
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* @param LoopInterface $loop
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* @param array $context
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* @throws InvalidArgumentException if the listening address is invalid
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* @throws RuntimeException if listening on this address fails (already in use etc.)
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*/
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public function __construct($path, LoopInterface $loop, array $context = array())
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{
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$this->loop = $loop;
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if (\strpos($path, '://') === false) {
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$path = 'unix://' . $path;
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} elseif (\substr($path, 0, 7) !== 'unix://') {
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throw new \InvalidArgumentException('Given URI "' . $path . '" is invalid');
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}
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$this->master = @\stream_socket_server(
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$path,
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$errno,
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$errstr,
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\STREAM_SERVER_BIND | \STREAM_SERVER_LISTEN,
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\stream_context_create(array('socket' => $context))
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);
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if (false === $this->master) {
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// PHP does not seem to report errno/errstr for Unix domain sockets (UDS) right now.
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// This only applies to UDS server sockets, see also https://3v4l.org/NAhpr.
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// Parse PHP warning message containing unknown error, HHVM reports proper info at least.
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if ($errno === 0 && $errstr === '') {
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$error = \error_get_last();
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if (\preg_match('/\(([^\)]+)\)|\[(\d+)\]: (.*)/', $error['message'], $match)) {
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$errstr = isset($match[3]) ? $match['3'] : $match[1];
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$errno = isset($match[2]) ? (int)$match[2] : 0;
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}
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}
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throw new \RuntimeException('Failed to listen on Unix domain socket "' . $path . '": ' . $errstr, $errno);
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}
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\stream_set_blocking($this->master, 0);
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$this->resume();
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}
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public function getAddress()
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{
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if (!\is_resource($this->master)) {
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return null;
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}
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return 'unix://' . \stream_socket_get_name($this->master, false);
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}
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public function pause()
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{
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if (!$this->listening) {
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return;
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}
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$this->loop->removeReadStream($this->master);
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$this->listening = false;
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}
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public function resume()
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{
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if ($this->listening || !is_resource($this->master)) {
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return;
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}
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$that = $this;
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$this->loop->addReadStream($this->master, function ($master) use ($that) {
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$newSocket = @\stream_socket_accept($master, 0);
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if (false === $newSocket) {
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$that->emit('error', array(new \RuntimeException('Error accepting new connection')));
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return;
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}
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$that->handleConnection($newSocket);
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});
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$this->listening = true;
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}
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public function close()
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{
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if (!\is_resource($this->master)) {
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return;
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}
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$this->pause();
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\fclose($this->master);
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$this->removeAllListeners();
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}
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/** @internal */
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public function handleConnection($socket)
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{
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$connection = new Connection($socket, $this->loop);
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$connection->unix = true;
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$this->emit('connection', array(
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$connection
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));
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}
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}
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