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<?php |
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declare(strict_types=1); |
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namespace Buzz\Client; |
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use Buzz\Configuration\ParameterBag; |
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use Buzz\Exception\CallbackException; |
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use Buzz\Exception\ClientException; |
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use Buzz\Exception\NetworkException; |
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use Buzz\Exception\RequestException; |
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use Buzz\Message\HeaderConverter; |
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use Buzz\Message\ResponseBuilder; |
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use Psr\Http\Message\RequestInterface; |
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use Symfony\Component\OptionsResolver\OptionsResolver; |
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/** |
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* Base client class with helpers for working with cURL. |
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*/ |
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abstract class AbstractCurl extends AbstractClient |
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{ |
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private $handles = []; |
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private $maxHandles = 5; |
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protected function configureOptions(OptionsResolver $resolver): void |
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{ |
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parent::configureOptions($resolver); |
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$resolver->setDefault('curl', []); |
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$resolver->setAllowedTypes('curl', ['array']); |
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$resolver->setDefault('expose_curl_info', false); |
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$resolver->setAllowedTypes('expose_curl_info', ['boolean']); |
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} |
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/** |
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* Creates a new cURL resource. |
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* |
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* @return resource A new cURL resource |
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* |
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* @throws ClientException If unable to create a cURL resource |
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*/ |
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protected function createHandle() |
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{ |
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$curl = $this->handles ? array_pop($this->handles) : curl_init(); |
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if (false === $curl) { |
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throw new ClientException('Unable to create a new cURL handle'); |
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} |
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return $curl; |
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} |
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/** |
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* Release a cUrl resource. This function is from Guzzle. |
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* |
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* @param resource $curl |
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*/ |
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protected function releaseHandle($curl): void |
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{ |
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if (\count($this->handles) >= $this->maxHandles) { |
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curl_close($curl); |
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} else { |
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// Remove all callback functions as they can hold onto references |
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// and are not cleaned up by curl_reset. Using curl_setopt_array |
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// does not work for some reason, so removing each one |
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// individually. |
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curl_setopt($curl, CURLOPT_HEADERFUNCTION, null); |
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curl_setopt($curl, CURLOPT_READFUNCTION, null); |
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curl_setopt($curl, CURLOPT_WRITEFUNCTION, null); |
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curl_setopt($curl, CURLOPT_PROGRESSFUNCTION, null); |
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curl_reset($curl); |
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if (!\in_array($curl, $this->handles)) { |
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$this->handles[] = $curl; |
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} |
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} |
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} |
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/** |
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* Prepares a cURL resource to send a request. |
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* |
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* @param resource $curl |
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*/ |
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protected function prepare($curl, RequestInterface $request, ParameterBag $options): ResponseBuilder |
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{ |
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if (\defined('CURLOPT_PROTOCOLS')) { |
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curl_setopt($curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS); |
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curl_setopt($curl, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS); |
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} |
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curl_setopt($curl, CURLOPT_HEADER, false); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, false); |
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curl_setopt($curl, CURLOPT_FAILONERROR, false); |
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$this->setOptionsFromParameterBag($curl, $options); |
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$this->setOptionsFromRequest($curl, $request); |
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$responseBuilder = new ResponseBuilder($this->responseFactory); |
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curl_setopt($curl, CURLOPT_HEADERFUNCTION, function ($ch, $data) use ($responseBuilder) { |
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$str = trim($data); |
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if ('' !== $str) { |
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if (0 === strpos(strtolower($str), 'http/')) { |
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$responseBuilder->setStatus($str); |
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} else { |
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$responseBuilder->addHeader($str); |
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} |
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} |
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return \strlen($data); |
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}); |
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curl_setopt($curl, CURLOPT_WRITEFUNCTION, function ($ch, $data) use ($responseBuilder) { |
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return $responseBuilder->writeBody($data); |
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}); |
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// apply additional options |
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curl_setopt_array($curl, $options->get('curl')); |
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return $responseBuilder; |
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} |
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/** |
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* Sets options on a cURL resource based on a request. |
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* |
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* @param resource $curl A cURL resource |
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* @param RequestInterface $request A request object |
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*/ |
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private function setOptionsFromRequest($curl, RequestInterface $request): void |
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{ |
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$options = [ |
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CURLOPT_CUSTOMREQUEST => $request->getMethod(), |
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CURLOPT_URL => $request->getUri()->__toString(), |
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CURLOPT_HTTPHEADER => HeaderConverter::toBuzzHeaders($request->getHeaders()), |
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]; |
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if (0 !== $version = $this->getProtocolVersion($request)) { |
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$options[CURLOPT_HTTP_VERSION] = $version; |
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} |
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if ($request->getUri()->getUserInfo()) { |
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$options[CURLOPT_USERPWD] = $request->getUri()->getUserInfo(); |
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} |
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switch (strtoupper($request->getMethod())) { |
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case 'HEAD': |
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$options[CURLOPT_NOBODY] = true; |
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break; |
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case 'GET': |
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$options[CURLOPT_HTTPGET] = true; |
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break; |
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case 'POST': |
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case 'PUT': |
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case 'DELETE': |
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case 'PATCH': |
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case 'OPTIONS': |
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$body = $request->getBody(); |
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$bodySize = $body->getSize(); |
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if (0 !== $bodySize) { |
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if ($body->isSeekable()) { |
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$body->rewind(); |
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} |
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// Message has non empty body. |
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if (null === $bodySize || $bodySize > 1024 * 1024) { |
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// Avoid full loading large or unknown size body into memory |
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$options[CURLOPT_UPLOAD] = true; |
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if (null !== $bodySize) { |
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$options[CURLOPT_INFILESIZE] = $bodySize; |
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} |
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$options[CURLOPT_READFUNCTION] = function ($ch, $fd, $length) use ($body) { |
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return $body->read($length); |
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}; |
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} else { |
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// Small body can be loaded into memory |
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$options[CURLOPT_POSTFIELDS] = (string) $body; |
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} |
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} |
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} |
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curl_setopt_array($curl, $options); |
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} |
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/** |
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* @param resource $curl |
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*/ |
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private function setOptionsFromParameterBag($curl, ParameterBag $options): void |
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{ |
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if (null !== $proxy = $options->get('proxy')) { |
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curl_setopt($curl, CURLOPT_PROXY, $proxy); |
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} |
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$canFollow = !ini_get('safe_mode') && !ini_get('open_basedir') && $options->get('allow_redirects'); |
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, $canFollow); |
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curl_setopt($curl, CURLOPT_MAXREDIRS, $canFollow ? $options->get('max_redirects') : 0); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, $options->get('verify') ? 1 : 0); |
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curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, $options->get('verify') ? 2 : 0); |
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if (0 < $options->get('timeout')) { |
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curl_setopt($curl, CURLOPT_TIMEOUT, $options->get('timeout')); |
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} |
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} |
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/** |
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* @param resource $curl |
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* |
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* @throws NetworkException |
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* @throws RequestException |
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* @throws CallbackException |
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*/ |
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protected function parseError(RequestInterface $request, int $errno, $curl): void |
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{ |
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switch ($errno) { |
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case CURLE_OK: |
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// All OK, create a response object |
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break; |
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case CURLE_COULDNT_RESOLVE_PROXY: |
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case CURLE_COULDNT_RESOLVE_HOST: |
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case CURLE_COULDNT_CONNECT: |
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case CURLE_OPERATION_TIMEOUTED: |
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case CURLE_SSL_CONNECT_ERROR: |
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throw new NetworkException($request, curl_error($curl), $errno); |
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case CURLE_ABORTED_BY_CALLBACK: |
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throw new CallbackException($request, curl_error($curl), $errno); |
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default: |
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throw new RequestException($request, curl_error($curl), $errno); |
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} |
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} |
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private function getProtocolVersion(RequestInterface $request): int |
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{ |
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switch ($request->getProtocolVersion()) { |
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case '1.0': |
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return CURL_HTTP_VERSION_1_0; |
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case '1.1': |
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return CURL_HTTP_VERSION_1_1; |
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case '2.0': |
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if (\defined('CURL_HTTP_VERSION_2_0')) { |
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return CURL_HTTP_VERSION_2_0; |
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} |
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throw new \UnexpectedValueException('libcurl 7.33 needed for HTTP 2.0 support'); |
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default: |
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return 0; |
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} |
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} |
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} |
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