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<?php
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namespace React\Socket;
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use React\Dns\Config\Config as DnsConfig;
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use React\Dns\Resolver\Factory as DnsFactory;
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use React\Dns\Resolver\ResolverInterface;
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use React\EventLoop\LoopInterface;
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/**
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* The `Connector` class is the main class in this package that implements the
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* `ConnectorInterface` and allows you to create streaming connections.
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*
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* You can use this connector to create any kind of streaming connections, such
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* as plaintext TCP/IP, secure TLS or local Unix connection streams.
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*
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* Under the hood, the `Connector` is implemented as a *higher-level facade*
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* or the lower-level connectors implemented in this package. This means it
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* also shares all of their features and implementation details.
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* If you want to typehint in your higher-level protocol implementation, you SHOULD
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* use the generic [`ConnectorInterface`](#connectorinterface) instead.
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*
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* @see ConnectorInterface for the base interface
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*/
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final class Connector implements ConnectorInterface
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{
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private $connectors = array();
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public function __construct(LoopInterface $loop, array $options = array())
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{
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// apply default options if not explicitly given
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$options += array(
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'tcp' => true,
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'tls' => true,
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'unix' => true,
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'dns' => true,
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'timeout' => true,
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'happy_eyeballs' => true,
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);
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if ($options['timeout'] === true) {
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$options['timeout'] = (float)\ini_get("default_socket_timeout");
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}
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if ($options['tcp'] instanceof ConnectorInterface) {
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$tcp = $options['tcp'];
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} else {
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$tcp = new TcpConnector(
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$loop,
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\is_array($options['tcp']) ? $options['tcp'] : array()
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);
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}
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if ($options['dns'] !== false) {
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if ($options['dns'] instanceof ResolverInterface) {
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$resolver = $options['dns'];
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} else {
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if ($options['dns'] !== true) {
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$server = $options['dns'];
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} else {
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// try to load nameservers from system config or default to Google's public DNS
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$config = DnsConfig::loadSystemConfigBlocking();
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$server = $config->nameservers ? \reset($config->nameservers) : '8.8.8.8';
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}
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$factory = new DnsFactory();
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$resolver = $factory->createCached(
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$server,
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$loop
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);
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}
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if ($options['happy_eyeballs'] === true) {
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$tcp = new HappyEyeBallsConnector($loop, $tcp, $resolver);
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} else {
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$tcp = new DnsConnector($tcp, $resolver);
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}
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}
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if ($options['tcp'] !== false) {
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$options['tcp'] = $tcp;
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if ($options['timeout'] !== false) {
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$options['tcp'] = new TimeoutConnector(
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$options['tcp'],
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$options['timeout'],
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$loop
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);
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}
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$this->connectors['tcp'] = $options['tcp'];
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}
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if ($options['tls'] !== false) {
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if (!$options['tls'] instanceof ConnectorInterface) {
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$options['tls'] = new SecureConnector(
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$tcp,
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$loop,
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\is_array($options['tls']) ? $options['tls'] : array()
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);
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}
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if ($options['timeout'] !== false) {
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$options['tls'] = new TimeoutConnector(
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$options['tls'],
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$options['timeout'],
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$loop
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);
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}
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$this->connectors['tls'] = $options['tls'];
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}
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if ($options['unix'] !== false) {
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if (!$options['unix'] instanceof ConnectorInterface) {
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$options['unix'] = new UnixConnector($loop);
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}
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$this->connectors['unix'] = $options['unix'];
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}
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}
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public function connect($uri)
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{
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$scheme = 'tcp';
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if (\strpos($uri, '://') !== false) {
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$scheme = (string)\substr($uri, 0, \strpos($uri, '://'));
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}
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if (!isset($this->connectors[$scheme])) {
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return \React\Promise\reject(new \RuntimeException(
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'No connector available for URI scheme "' . $scheme . '"'
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));
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}
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return $this->connectors[$scheme]->connect($uri);
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}
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}
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