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<?php |
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namespace Freyo\Flysystem\QcloudCOSv4\Client; |
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// A simple wrapper for libcurl using multi interface to do transfers in parallel. |
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class LibcurlWrapper |
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{ |
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private $sequence; // integer: sequence id for each request. |
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private $curlMultiHandle; // curl handle: curl multi handle. |
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private $curlHandleInfo; // array: array of active curl handle. |
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private $idleCurlHandle; // array: idle curl handle which can be reused. |
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public function __construct() |
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{ |
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$this->sequence = 0; |
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$this->curlMultiHandle = curl_multi_init(); |
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$this->idleCurlHandle = []; |
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} |
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public function __destruct() |
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{ |
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curl_multi_close($this->curlMultiHandle); |
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foreach ($this->idleCurlHandle as $handle) { |
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curl_close($handle); |
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} |
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$this->idleCurlHandle = []; |
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} |
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public function startSendingRequest($httpRequest, $done) |
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{ |
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$this->sequence += 1; |
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if (count($this->idleCurlHandle) !== 0) { |
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$curlHandle = array_pop($this->idleCurlHandle); |
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} else { |
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$curlHandle = curl_init(); |
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if ($curlHandle === false) { |
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return false; |
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} |
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} |
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curl_setopt($curlHandle, CURLOPT_TIMEOUT_MS, $httpRequest->timeoutMs); |
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curl_setopt($curlHandle, CURLOPT_URL, $httpRequest->url); |
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curl_setopt($curlHandle, CURLOPT_HEADER, 1); |
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curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, 1); |
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$headers = $httpRequest->customHeaders; |
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array_push($headers, 'User-Agent:'.Conf::getUserAgent()); |
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if ($httpRequest->method === 'POST') { |
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if (defined('CURLOPT_SAFE_UPLOAD')) { |
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curl_setopt($curlHandle, CURLOPT_SAFE_UPLOAD, true); |
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} |
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curl_setopt($curlHandle, CURLOPT_POST, true); |
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$arr = LibcurlHelper::buildCustomPostFields($httpRequest->dataToPost); |
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array_push($headers, 'Expect: 100-continue'); |
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array_push($headers, 'Content-Type: multipart/form-data; boundary='.$arr[0]); |
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curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $arr[1]); |
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} |
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curl_setopt($curlHandle, CURLOPT_HTTPHEADER, $headers); |
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curl_multi_add_handle($this->curlMultiHandle, $curlHandle); |
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$this->curlHandleInfo[$this->sequence]['handle'] = $curlHandle; |
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$this->curlHandleInfo[$this->sequence]['done'] = $done; |
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$this->curlHandleInfo[$this->sequence]['request'] = $httpRequest; |
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} |
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public function performSendingRequest() |
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{ |
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for (; ;) { |
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$active = null; |
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$mrc = $this->doCurlMulti(); |
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while ($active && $mrc == CURLM_OK) { |
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if (curl_multi_select($this->curlMultiHandle) == -1) { |
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usleep(1); |
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} |
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$this->doCurlMulti(); |
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} |
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if (count($this->curlHandleInfo) == 0) { |
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break; |
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} |
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} |
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} |
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private function processResult($info) |
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{ |
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$result = $info['result']; |
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$handle = $info['handle']; |
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$sequence = 0; |
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foreach ($this->curlHandleInfo as $key => $info) { |
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if ($info['handle'] === $handle) { |
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$sequence = $key; |
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break; |
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} |
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} |
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$request = $this->curlHandleInfo[$sequence]['request']; |
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$done = $this->curlHandleInfo[$sequence]['done']; |
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$response = new HttpResponse(); |
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if ($result !== CURLE_OK) { |
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$response->curlErrorCode = $result; |
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$response->curlErrorMessage = curl_error($handle); |
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call_user_func($done, $request, $response); |
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} else { |
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$responseStr = curl_multi_getcontent($handle); |
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$headerSize = curl_getinfo($handle, CURLINFO_HEADER_SIZE); |
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$headerStr = substr($responseStr, 0, $headerSize); |
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$body = substr($responseStr, $headerSize); |
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$response->curlErrorCode = curl_errno($handle); |
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$response->curlErrorMessage = curl_error($handle); |
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$response->statusCode = curl_getinfo($handle, CURLINFO_HTTP_CODE); |
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$headLines = explode("\r\n", $headerStr); |
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foreach ($headLines as $head) { |
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$arr = explode(':', $head); |
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if (count($arr) >= 2) { |
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$response->headers[trim($arr[0])] = trim($arr[1]); |
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} |
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} |
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$response->body = $body; |
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call_user_func($done, $request, $response); |
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} |
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unset($this->curlHandleInfo[$sequence]); |
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curl_multi_remove_handle($this->curlMultiHandle, $handle); |
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array_push($this->idleCurlHandle, $handle); |
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} |
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private function resetCurl($handle) |
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{ |
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if (function_exists('curl_reset')) { |
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curl_reset($handle); |
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} else { |
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LibcurlHelper::my_curl_reset($handle); |
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} |
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} |
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private function doCurlMulti() |
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{ |
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do { |
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$mrc = curl_multi_exec($this->curlMultiHandle, $active); |
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$info = curl_multi_info_read($this->curlMultiHandle); |
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if ($info !== false) { |
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$this->processResult($info); |
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} |
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} while ($mrc == CURLM_CALL_MULTI_PERFORM); |
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return $mrc; |
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} |
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} |
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