<?php

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namespace Guzzle\Plugin\Backoff;

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use Guzzle\Http\Message\RequestInterface;

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use Guzzle\Http\Message\Response;

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use Guzzle\Http\Exception\HttpException;

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/**

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* Strategy used to retry HTTP requests based on the response code.

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*

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* Retries 500 and 503 error by default.

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*/

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class HttpBackoffStrategy extends AbstractErrorCodeBackoffStrategy

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{

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/** @var array Default cURL errors to retry */

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protected static $defaultErrorCodes = array(500, 503);

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protected function getDelay($retries, RequestInterface $request, Response $response = null, HttpException $e = null)

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{

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if ($response) {

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//Short circuit the rest of the checks if it was successful

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if ($response->isSuccessful()) {

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return false;

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} else {

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return isset($this->errorCodes[$response->getStatusCode()]) ? true : null;

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}

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}

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}

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}

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