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<?php |
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/** |
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* vipnytt/RobotsTxtParser |
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* |
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* @link https://github.com/VIPnytt/RobotsTxtParser |
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* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
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*/ |
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namespace vipnytt\RobotsTxtParser; |
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use Composer\CaBundle\CaBundle; |
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use vipnytt\RobotsTxtParser\Parser\StatusCodeParser; |
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use vipnytt\RobotsTxtParser\Parser\UriParser; |
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/** |
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* Class UriClient |
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* |
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* @see https://github.com/VIPnytt/RobotsTxtParser/blob/master/docs/methods/UriClient.md for documentation |
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* @package vipnytt\RobotsTxtParser |
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*/ |
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class UriClient extends TxtClient |
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{ |
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/** |
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* User-agent |
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*/ |
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const CURL_USER_AGENT = 'RobotsTxtParser-VIPnytt/2.1 (+https://github.com/VIPnytt/RobotsTxtParser/blob/master/README.md)'; |
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/** |
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* Base uri |
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* @var string |
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*/ |
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private $base; |
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/** |
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* Header parser |
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* @var Parser\HeaderParser |
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*/ |
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private $headerParser; |
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/** |
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* RequestClient timestamp |
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* @var int |
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*/ |
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private $time; |
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/** |
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* Status code |
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* @var int|null |
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*/ |
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private $rawStatusCode; |
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/** |
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* Effective uri |
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* @var string |
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*/ |
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private $effective; |
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/** |
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* Cache-Control max-age |
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* @var int |
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*/ |
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private $rawMaxAge; |
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/** |
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* Robots.txt contents |
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* @var string |
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*/ |
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private $rawContents; |
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/** |
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* Robots.txt character encoding |
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* @var string |
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*/ |
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private $rawEncoding; |
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/** |
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* RequestClient constructor. |
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* |
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* @param string $baseUri |
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* @param array $curlOptions |
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* @param int|null $byteLimit |
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*/ |
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public function __construct($baseUri, array $curlOptions = [], $byteLimit = self::BYTE_LIMIT) |
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{ |
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$uriParser = new UriParser($baseUri); |
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$this->base = $uriParser->base(); |
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if ($this->request($curlOptions) === false) { |
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$this->time = time(); |
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$this->effective = $this->base; |
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$this->rawStatusCode = null; |
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$this->rawContents = ''; |
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$this->rawEncoding = self::ENCODING; |
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$this->rawMaxAge = 0; |
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} |
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parent::__construct($this->base, $this->rawStatusCode, $this->rawContents, $this->rawEncoding, $this->effective, $byteLimit); |
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} |
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/** |
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* cURL request |
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* |
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* @param array $options |
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* @return bool |
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*/ |
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private function request($options = []) |
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{ |
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$curl = curl_init(); |
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$caPathOrFile = CaBundle::getSystemCaRootBundlePath(); |
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// Set default cURL options |
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curl_setopt_array($curl, [ |
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CURLOPT_AUTOREFERER => true, |
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CURLOPT_CONNECTTIMEOUT => 30, |
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CURLOPT_ENCODING => 'identity', |
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CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_NONE, |
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CURLOPT_IPRESOLVE => CURL_IPRESOLVE_WHATEVER, |
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CURLOPT_SSL_VERIFYHOST => 2, |
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CURLOPT_SSL_VERIFYPEER => true, |
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CURLOPT_TIMEOUT => 120, |
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CURLOPT_USERAGENT => self::CURL_USER_AGENT, |
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(is_dir($caPathOrFile) || |
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( |
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is_link($caPathOrFile) && |
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is_dir(readlink($caPathOrFile)) |
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) |
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) ? CURLOPT_CAPATH : CURLOPT_CAINFO => $caPathOrFile |
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]); |
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// Apply custom cURL options |
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curl_setopt_array($curl, $options); |
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// Initialize the header parser |
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$this->headerParser = new Parser\HeaderParser($curl); |
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// Make sure these cURL options stays untouched |
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curl_setopt_array($curl, [ |
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CURLOPT_FAILONERROR => false, |
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CURLOPT_FOLLOWLOCATION => true, |
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CURLOPT_FTPSSLAUTH => CURLFTPAUTH_DEFAULT, |
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CURLOPT_HEADER => false, |
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CURLOPT_HEADERFUNCTION => [$this->headerParser, 'curlCallback'], |
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CURLOPT_HTTPAUTH => CURLAUTH_BASIC, |
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CURLOPT_MAXREDIRS => self::MAX_REDIRECTS, |
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CURLOPT_NOBODY => false, |
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CURLOPT_PROTOCOLS => CURLPROTO_FTP | CURLPROTO_FTPS | CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_SFTP, |
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CURLOPT_REDIR_PROTOCOLS => CURLPROTO_FTP | CURLPROTO_FTPS | CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_SFTP, |
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CURLOPT_RETURNTRANSFER => true, |
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CURLOPT_URL => $this->base . self::PATH, |
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CURLOPT_USERPWD => 'anonymous:anonymous@', |
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]); |
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// Execute cURL request |
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if (($this->rawContents = curl_exec($curl)) === false) { |
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// Request failed |
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return false; |
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} |
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$this->time = time(); |
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$this->rawStatusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE); // also works with FTP status codes |
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$uriParser = new UriParser(curl_getinfo($curl, CURLINFO_EFFECTIVE_URL)); |
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$this->effective = $uriParser->base(); |
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curl_close($curl); |
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$this->rawEncoding = $this->headerParser->getCharset(); |
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$this->rawMaxAge = $this->headerParser->getMaxAge(); |
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return true; |
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} |
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/** |
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* Base uri |
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* |
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* @return string |
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*/ |
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public function getBaseUri() |
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{ |
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return $this->base; |
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} |
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/** |
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* Effective uri |
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* |
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* @return string|null |
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*/ |
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public function getEffectiveUri() |
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{ |
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return $this->effective; |
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} |
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/** |
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* Status code |
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* |
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* @return int|null |
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*/ |
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public function getStatusCode() |
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{ |
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$statusCodeParser = new StatusCodeParser($this->rawStatusCode, parse_url($this->effective, PHP_URL_SCHEME)); |
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return $statusCodeParser->isValid() ? $this->rawStatusCode : null; |
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} |
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/** |
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* Body content |
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* |
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* @return string |
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*/ |
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public function getContents() |
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{ |
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return $this->rawContents; |
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} |
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/** |
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* Encoding |
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* |
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* @return string |
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*/ |
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public function getEncoding() |
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{ |
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return $this->rawEncoding; |
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} |
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/** |
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* Next update timestamp |
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* |
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* @return int |
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*/ |
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public function nextUpdate() |
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{ |
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if ($this->rawStatusCode === 503 && |
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strpos($this->base, 'http') === 0 |
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) { |
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return $this->time + min(self::CACHE_TIME, $this->headerParser->getRetryAfter($this->time)); |
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} |
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return $this->time + self::CACHE_TIME; |
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} |
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/** |
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* Valid until timestamp |
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* |
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* @return int |
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*/ |
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public function validUntil() |
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{ |
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return $this->time + max(self::CACHE_TIME, $this->rawMaxAge); |
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} |
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} |
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