PHP RequestInterface::removeHeader方法代码示例

 /**
  * Add cookies to a request based on the destination of the request and
  * the cookies stored in the storage backend.  Any previously set cookies
  * will be removed.
  *
  * @param RequestInterface $request Request to add cookies to.  If the
  *      request object already has a cookie header, then no further cookies
  *      will be added.
  *
  * @return array Returns an array of the cookies that were added
  */
 public function addCookies(RequestInterface $request)
 {
     $request->removeHeader('Cookie');
     // Find cookies that match this request
     $cookies = $this->jar->getCookies($request->getHost(), $request->getPath());
     $match = false;
     if ($cookies) {
         foreach ($cookies as $cookie) {
             $match = true;
             // If a port restriction is set, validate the port
             if (!empty($cookie['port'])) {
                 if (!in_array($request->getPort(), $cookie['port'])) {
                     $match = false;
                 }
             }
             // Validate the secure flag
             if ($cookie['secure']) {
                 if ($request->getScheme() != 'https') {
                     $match = false;
                 }
             }
             // If this request is eligible for the cookie, then merge it in
             if ($match) {
                 $request->addCookie($cookie['cookie'][0], isset($cookie['cookie'][1]) ? $cookie['cookie'][1] : null);
             }
         }
     }
     return $match && $cookies ? $cookies : array();
 }

 public function signRequest(RequestInterface $request, CredentialsInterface $credentials)
 {
     // Ensure that the signable query string parameters are sorted
     sort($this->signableQueryString);
     // Add the security token header if one is being used by the credentials
     if ($token = $credentials->getSecurityToken()) {
         $request->setHeader('x-amz-security-token', $token);
     }
     $request->removeHeader('x-amz-date');
     $request->setHeader('Date', gmdate(\DateTime::RFC2822));
     $stringToSign = $this->createCanonicalizedString($request);
     $request->getParams()->set('aws.string_to_sign', $stringToSign);
     $request->setHeader('Authorization', 'AWS ' . $credentials->getAccessKeyId() . ':' . $this->signString($stringToSign, $credentials));
     //         COMMONLOG(DEBUG, "send header:%s",$request->getRawHeaders());
     //         if(self::$isFile)
     //         {
     //         	if(self::$filePath)
     //         		COMMONLOG(DEBUG, "souce file:%s",self::$filePath);
     //         }
     //         else
     //        {
     //        		if(get_class($request) === 'Guzzle\Http\Message\EntityEnclosingRequest' && get_class($request->getBody()) === 'Guzzle\Http\EntityBody' &&  $request->getBody()->getContentLength() != 0)
     //        		{
     //        			COMMONLOG(DEBUG, "send msg:%s",$request->getBody());
     //        		}
     //         }
 }

 private function moveHeadersToQuery(RequestInterface $request)
 {
     $query = array('X-Amz-Date' => gmdate('Ymd\\THis\\Z', $this->getTimestamp()));
     foreach ($request->getHeaders() as $name => $header) {
         if (substr($name, 0, 5) == 'x-amz') {
             $query[$header->getName()] = (string) $header;
         }
         if ($name != 'host') {
             $request->removeHeader($name);
         }
     }
     $request->getQuery()->overwriteWith($query);
 }

 /**
  * Factory method to create a new curl handle based on an HTTP request.
  *
  * There are some helpful options you can set to enable specific behavior:
  * - debug:    Set to true to enable cURL debug functionality to track the actual headers sent over the wire.
  * - progress: Set to true to enable progress function callbacks.
  *
  * @param RequestInterface $request Request
  *
  * @return CurlHandle
  * @throws RuntimeException
  */
 public static function factory(RequestInterface $request)
 {
     $requestCurlOptions = $request->getCurlOptions();
     $mediator = new RequestMediator($request, $requestCurlOptions->get('emit_io'));
     $tempContentLength = null;
     $method = $request->getMethod();
     $bodyAsString = $requestCurlOptions->get(self::BODY_AS_STRING);
     // Prepare url
     $url = (string) $request->getUrl();
     if (($pos = strpos($url, '#')) !== false) {
         // strip fragment from url
         $url = substr($url, 0, $pos);
     }
     // Array of default cURL options.
     $curlOptions = array(CURLOPT_URL => $url, CURLOPT_CONNECTTIMEOUT => 150, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_PORT => $request->getPort(), CURLOPT_HTTPHEADER => array(), CURLOPT_WRITEFUNCTION => array($mediator, 'writeResponseBody'), CURLOPT_HEADERFUNCTION => array($mediator, 'receiveResponseHeader'), CURLOPT_HTTP_VERSION => $request->getProtocolVersion() === '1.0' ? CURL_HTTP_VERSION_1_0 : CURL_HTTP_VERSION_1_1, CURLOPT_SSL_VERIFYPEER => 1, CURLOPT_SSL_VERIFYHOST => 2);
     if (defined('CURLOPT_PROTOCOLS')) {
         // Allow only HTTP and HTTPS protocols
         $curlOptions[CURLOPT_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
     }
     // Add CURLOPT_ENCODING if Accept-Encoding header is provided
     if ($acceptEncodingHeader = $request->getHeader('Accept-Encoding')) {
         $curlOptions[CURLOPT_ENCODING] = (string) $acceptEncodingHeader;
         // Let cURL set the Accept-Encoding header, prevents duplicate values
         $request->removeHeader('Accept-Encoding');
     }
     // Enable curl debug information if the 'debug' param was set
     if ($requestCurlOptions->get('debug')) {
         $curlOptions[CURLOPT_STDERR] = fopen('php://temp', 'r+');
         // @codeCoverageIgnoreStart
         if (false === $curlOptions[CURLOPT_STDERR]) {
             throw new RuntimeException('Unable to create a stream for CURLOPT_STDERR');
         }
         // @codeCoverageIgnoreEnd
         $curlOptions[CURLOPT_VERBOSE] = true;
     }
     // Specify settings according to the HTTP method
     if ($method == 'GET') {
         $curlOptions[CURLOPT_HTTPGET] = true;
     } elseif ($method == 'HEAD') {
         $curlOptions[CURLOPT_NOBODY] = true;
         // HEAD requests do not use a write function
         unset($curlOptions[CURLOPT_WRITEFUNCTION]);
     } elseif (!$request instanceof EntityEnclosingRequest) {
         $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
     } else {
         $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
         // Handle sending raw bodies in a request
         if ($request->getBody()) {
             // You can send the body as a string using curl's CURLOPT_POSTFIELDS
             if ($bodyAsString) {
                 $curlOptions[CURLOPT_POSTFIELDS] = (string) $request->getBody();
                 // Allow curl to add the Content-Length for us to account for the times when
                 // POST redirects are followed by GET requests
                 if ($tempContentLength = $request->getHeader('Content-Length')) {
                     $tempContentLength = (int) (string) $tempContentLength;
                 }
                 // Remove the curl generated Content-Type header if none was set manually
                 if (!$request->hasHeader('Content-Type')) {
                     $curlOptions[CURLOPT_HTTPHEADER][] = 'Content-Type:';
                 }
             } else {
                 $curlOptions[CURLOPT_UPLOAD] = true;
                 // Let cURL handle setting the Content-Length header
                 if ($tempContentLength = $request->getHeader('Content-Length')) {
                     $tempContentLength = (int) (string) $tempContentLength;
                     $curlOptions[CURLOPT_INFILESIZE] = $tempContentLength;
                 }
                 // Add a callback for curl to read data to send with the request only if a body was specified
                 $curlOptions[CURLOPT_READFUNCTION] = array($mediator, 'readRequestBody');
                 // Attempt to seek to the start of the stream
                 $request->getBody()->seek(0);
             }
         } else {
             // Special handling for POST specific fields and files
             $postFields = false;
             if (count($request->getPostFiles())) {
                 $postFields = $request->getPostFields()->useUrlEncoding(false)->urlEncode();
                 foreach ($request->getPostFiles() as $key => $data) {
                     $prefixKeys = count($data) > 1;
                     foreach ($data as $index => $file) {
                         // Allow multiple files in the same key
                         $fieldKey = $prefixKeys ? "{$key}[{$index}]" : $key;
                         $postFields[$fieldKey] = $file->getCurlValue();
                     }
                 }
             } elseif (count($request->getPostFields())) {
                 $postFields = (string) $request->getPostFields()->useUrlEncoding(true);
             }
//.........这里部分代码省略.........

 /**
  * Prepare for sending
  *
  * @param RequestInterface $request Request to prepare
  * @throws \Exception on error preparing the request
  */
 protected function beforeSend(RequestInterface $request)
 {
     try {
         // Fix Content-Length and Transfer-Encoding collisions
         if ($request->hasHeader('Transfer-Encoding') && $request->hasHeader('Content-Length')) {
             $request->removeHeader('Transfer-Encoding');
         }
         $request->setState(RequestInterface::STATE_TRANSFER);
         $request->dispatch('request.before_send', array('request' => $request));
         if ($request->getState() != RequestInterface::STATE_TRANSFER) {
             // Requests might decide they don't need to be sent just before transfer (e.g. CachePlugin)
             $this->remove($request);
             if ($request->getState() == RequestInterface::STATE_COMPLETE) {
                 $this->successful[] = $request;
             }
         } else {
             // Add the request curl handle to the multi handle
             $this->checkCurlResult(curl_multi_add_handle($this->multiHandle, $this->createCurlHandle($request)->getHandle()));
         }
     } catch (\Exception $e) {
         // Queue the exception to be thrown when sent
         $this->removeErroredRequest($request, $e);
     }
 }

 private function moveHeadersToQuery(RequestInterface $request)
 {
     $query = $request->getQuery();
     foreach ($request->getHeaders() as $name => $header) {
         if (substr($name, 0, 5) == 'x-amz') {
             $query[$header->getName()] = (string) $header;
         }
         if ($name !== 'host') {
             $request->removeHeader($name);
         }
     }
 }

 public static function factory(RequestInterface $request)
 {
     $requestCurlOptions = $request->getCurlOptions();
     $mediator = new RequestMediator($request, $requestCurlOptions->get('emit_io'));
     $tempContentLength = null;
     $method = $request->getMethod();
     $bodyAsString = $requestCurlOptions->get(self::BODY_AS_STRING);
     $url = (string) $request->getUrl();
     if (($pos = strpos($url, '#')) !== false) {
         $url = substr($url, 0, $pos);
     }
     $curlOptions = array(CURLOPT_URL => $url, CURLOPT_CONNECTTIMEOUT => 150, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_PORT => $request->getPort(), CURLOPT_HTTPHEADER => array(), CURLOPT_WRITEFUNCTION => array($mediator, 'writeResponseBody'), CURLOPT_HEADERFUNCTION => array($mediator, 'receiveResponseHeader'), CURLOPT_HTTP_VERSION => $request->getProtocolVersion() === '1.0' ? CURL_HTTP_VERSION_1_0 : CURL_HTTP_VERSION_1_1, CURLOPT_SSL_VERIFYPEER => 1, CURLOPT_SSL_VERIFYHOST => 2);
     if (defined('CURLOPT_PROTOCOLS')) {
         $curlOptions[CURLOPT_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
     }
     if ($acceptEncodingHeader = $request->getHeader('Accept-Encoding')) {
         $curlOptions[CURLOPT_ENCODING] = (string) $acceptEncodingHeader;
         $request->removeHeader('Accept-Encoding');
     }
     if ($requestCurlOptions->get('debug')) {
         $curlOptions[CURLOPT_STDERR] = fopen('php://temp', 'r+');
         if (false === $curlOptions[CURLOPT_STDERR]) {
             throw new RuntimeException('Unable to create a stream for CURLOPT_STDERR');
         }
         $curlOptions[CURLOPT_VERBOSE] = true;
     }
     if ($method == 'GET') {
         $curlOptions[CURLOPT_HTTPGET] = true;
     } elseif ($method == 'HEAD') {
         $curlOptions[CURLOPT_NOBODY] = true;
         unset($curlOptions[CURLOPT_WRITEFUNCTION]);
     } elseif (!$request instanceof EntityEnclosingRequest) {
         $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
     } else {
         $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
         if ($request->getBody()) {
             if ($bodyAsString) {
                 $curlOptions[CURLOPT_POSTFIELDS] = (string) $request->getBody();
                 if ($tempContentLength = $request->getHeader('Content-Length')) {
                     $tempContentLength = (int) (string) $tempContentLength;
                 }
                 if (!$request->hasHeader('Content-Type')) {
                     $curlOptions[CURLOPT_HTTPHEADER][] = 'Content-Type:';
                 }
             } else {
                 $curlOptions[CURLOPT_UPLOAD] = true;
                 if ($tempContentLength = $request->getHeader('Content-Length')) {
                     $tempContentLength = (int) (string) $tempContentLength;
                     $curlOptions[CURLOPT_INFILESIZE] = $tempContentLength;
                 }
                 $curlOptions[CURLOPT_READFUNCTION] = array($mediator, 'readRequestBody');
                 $request->getBody()->seek(0);
             }
         } else {
             $postFields = false;
             if (count($request->getPostFiles())) {
                 $postFields = $request->getPostFields()->useUrlEncoding(false)->urlEncode();
                 foreach ($request->getPostFiles() as $key => $data) {
                     $prefixKeys = count($data) > 1;
                     foreach ($data as $index => $file) {
                         $fieldKey = $prefixKeys ? "{$key}[{$index}]" : $key;
                         $postFields[$fieldKey] = $file->getCurlValue();
                     }
                 }
             } elseif (count($request->getPostFields())) {
                 $postFields = (string) $request->getPostFields()->useUrlEncoding(true);
             }
             if ($postFields !== false) {
                 if ($method == 'POST') {
                     unset($curlOptions[CURLOPT_CUSTOMREQUEST]);
                     $curlOptions[CURLOPT_POST] = true;
                 }
                 $curlOptions[CURLOPT_POSTFIELDS] = $postFields;
                 $request->removeHeader('Content-Length');
             }
         }
         if (!$request->hasHeader('Expect')) {
             $curlOptions[CURLOPT_HTTPHEADER][] = 'Expect:';
         }
     }
     if (null !== $tempContentLength) {
         $request->removeHeader('Content-Length');
     }
     foreach ($requestCurlOptions->toArray() as $key => $value) {
         if (is_numeric($key)) {
             $curlOptions[$key] = $value;
         }
     }
     if (!isset($curlOptions[CURLOPT_ENCODING])) {
         $curlOptions[CURLOPT_HTTPHEADER][] = 'Accept:';
     }
     foreach ($request->getHeaderLines() as $line) {
         $curlOptions[CURLOPT_HTTPHEADER][] = $line;
     }
     if ($tempContentLength) {
         $request->setHeader('Content-Length', $tempContentLength);
     }
     $handle = curl_init();
     if ($requestCurlOptions->get('progress')) {
         $curlOptions[CURLOPT_PROGRESSFUNCTION] = function () use($mediator, $handle) {
//.........这里部分代码省略.........

 /**
  * Factory method to create a new curl handle based on an HTTP request.
  *
  * There are some helpful options you can set to enable specific behavior:
  * - debug:    Set to true to enable cURL debug functionality to track the
  *             actual headers sent over the wire.  The
  * - progress: Set to true to enable progress function callbacks. Most
  *             users do not need this, so it has been disabled by default.
  *
  * @param RequestInterface $request Request
  *
  * @return CurlHandle
  */
 public static function factory(RequestInterface $request)
 {
     $mediator = new RequestMediator($request);
     $requestCurlOptions = $request->getCurlOptions();
     $tempContentLength = null;
     $method = $request->getMethod();
     $client = $request->getClient();
     // Array of default cURL options.
     $curlOptions = array(CURLOPT_URL => $request->getUrl(), CURLOPT_CONNECTTIMEOUT => 10, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_USERAGENT => (string) $request->getHeader('User-Agent'), CURLOPT_ENCODING => '', CURLOPT_PORT => $request->getPort(), CURLOPT_HTTPHEADER => array(), CURLOPT_HEADERFUNCTION => array($mediator, 'receiveResponseHeader'), CURLOPT_HTTP_VERSION => $request->getProtocolVersion() === '1.0' ? CURL_HTTP_VERSION_1_0 : CURL_HTTP_VERSION_1_1);
     // Enable the progress function if the 'progress' param was set
     if ($requestCurlOptions->get('progress')) {
         $curlOptions[CURLOPT_PROGRESSFUNCTION] = array($mediator, 'progress');
         $curlOptions[CURLOPT_NOPROGRESS] = false;
     }
     // Enable curl debug information if the 'debug' param was set
     if ($requestCurlOptions->get('debug')) {
         $curlOptions[CURLOPT_STDERR] = fopen('php://temp', 'r+');
         // @codeCoverageIgnoreStart
         if (false === $curlOptions[CURLOPT_STDERR]) {
             throw new RuntimeException('Unable to create a stream for CURLOPT_STDERR');
         }
         // @codeCoverageIgnoreEnd
         $curlOptions[CURLOPT_VERBOSE] = true;
     }
     // HEAD requests need no response body, everything else might
     if ($method != 'HEAD') {
         $curlOptions[CURLOPT_WRITEFUNCTION] = array($mediator, 'writeResponseBody');
     }
     // Account for PHP installations with safe_mode or open_basedir enabled
     // @codeCoverageIgnoreStart
     if (CurlVersion::getInstance()->get('follow_location')) {
         $curlOptions[CURLOPT_FOLLOWLOCATION] = true;
         $curlOptions[CURLOPT_MAXREDIRS] = 5;
     }
     // @codeCoverageIgnoreEnd
     // Specify settings according to the HTTP method
     switch ($method) {
         case 'GET':
             $curlOptions[CURLOPT_HTTPGET] = true;
             break;
         case 'HEAD':
             $curlOptions[CURLOPT_NOBODY] = true;
             break;
         case 'POST':
             $curlOptions[CURLOPT_POST] = true;
             // Special handling for POST specific fields and files
             if (count($request->getPostFiles())) {
                 $fields = $request->getPostFields()->useUrlEncoding(false)->urlEncode();
                 foreach ($request->getPostFiles() as $key => $data) {
                     $prefixKeys = count($data) > 1;
                     foreach ($data as $index => $file) {
                         // Allow multiple files in the same key
                         $fieldKey = $prefixKeys ? "{$key}[{$index}]" : $key;
                         $fields[$fieldKey] = $file->getCurlString();
                     }
                 }
                 $curlOptions[CURLOPT_POSTFIELDS] = $fields;
                 $request->removeHeader('Content-Length');
             } elseif (count($request->getPostFields())) {
                 $curlOptions[CURLOPT_POSTFIELDS] = (string) $request->getPostFields()->useUrlEncoding(true);
                 $request->removeHeader('Content-Length');
             } elseif (!$request->getBody()) {
                 // Need to remove CURLOPT_POST to prevent chunked encoding for an empty POST
                 unset($curlOptions[CURLOPT_POST]);
                 $curlOptions[CURLOPT_CUSTOMREQUEST] = 'POST';
             }
             break;
         case 'PUT':
         case 'PATCH':
         case 'DELETE':
             $curlOptions[CURLOPT_UPLOAD] = true;
             if ($method != 'PUT') {
                 $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
             }
             // Let cURL handle setting the Content-Length header
             $contentLength = $request->getHeader('Content-Length');
             if ($contentLength !== null) {
                 $contentLength = (int) (string) $contentLength;
                 $curlOptions[CURLOPT_INFILESIZE] = $contentLength;
                 $tempContentLength = $contentLength;
                 $request->removeHeader('Content-Length');
             }
             break;
         default:
             $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
     }
     // Special handling for requests sending raw data
//.........这里部分代码省略.........

 public function signRequest(RequestInterface $request, CredentialsInterface $credentials)
 {
     $timestamp = $this->getTimestamp();
     $longDate = gmdate(DateFormat::ISO8601, $timestamp);
     $shortDate = substr($longDate, 0, 8);
     // Remove any previously set Authorization headers so that retries work
     $request->removeHeader('Authorization');
     // Requires a x-amz-date header or Date
     if ($request->hasHeader('x-amz-date') || !$request->hasHeader('Date')) {
         $request->setHeader('x-amz-date', $longDate);
     } else {
         $request->setHeader('Date', gmdate(DateFormat::RFC1123, $timestamp));
     }
     // Add the security token if one is present
     if ($credentials->getSecurityToken()) {
         $request->setHeader('x-amz-security-token', $credentials->getSecurityToken());
     }
     // Parse the service and region or use one that is explicitly set
     $region = $this->regionName;
     $service = $this->serviceName;
     if (!$region || !$service) {
         $url = Url::factory($request->getUrl());
         $region = $region ?: HostNameUtils::parseRegionName($url);
         $service = $service ?: HostNameUtils::parseServiceName($url);
     }
     $credentialScope = "{$shortDate}/{$region}/{$service}/aws4_request";
     // Calculate the request signature payload
     if ($request->hasHeader('x-amz-content-sha256')) {
         // Handle streaming operations (e.g. Glacier.UploadArchive)
         $payload = $request->getHeader('x-amz-content-sha256');
     } elseif ($request instanceof EntityEnclosingRequestInterface) {
         $payload = hash('sha256', $request->getMethod() == 'POST' && count($request->getPostFields()) ? (string) $request->getPostFields() : (string) $request->getBody());
     } else {
         // Use the default payload if there is no body
         $payload = self::DEFAULT_PAYLOAD;
     }
     $signingContext = $this->createSigningContext($request, $payload);
     $signingContext['string_to_sign'] = "AWS4-HMAC-SHA256\n{$longDate}\n{$credentialScope}\n" . hash('sha256', $signingContext['canonical_request']);
     // Calculate the signing key using a series of derived keys
     $signingKey = $this->getSigningKey($shortDate, $region, $service, $credentials->getSecretKey());
     $signature = hash_hmac('sha256', $signingContext['string_to_sign'], $signingKey);
     $request->setHeader('Authorization', "AWS4-HMAC-SHA256 " . "Credential={$credentials->getAccessKeyId()}/{$credentialScope}, " . "SignedHeaders={$signingContext['signed_headers']}, Signature={$signature}");
     // Add debug information to the request
     $request->getParams()->set('aws.signature', $signingContext);
 }

 /**
  * Factory method to create a new curl handle based on an HTTP request.
  *
  * Note that the HTTP request may be modified by this method
  *
  * There are some helpful options you can set to enable specific behavior:
  *
  *    - disabled_wire: This is a performance improvement that will disable
  *                     some debugging functionality with cURL.  The
  *                     functionality it disabled allows you to see the
  *                     exact HTTP request sent over the wire.
  *    - progress:      Set to true to enable progress function callbacks.
  *                     Most people don't need this, so it has been disabled
  *                     by default.
  *
  * @param RequestInterface $request Request
  *
  * @return CurlHandle
  */
 public static function factory(RequestInterface $request)
 {
     $mediator = new RequestMediator($request);
     $requestCurlOptions = $request->getCurlOptions();
     $tempHeaders = array();
     // Array of default cURL options.
     $curlOptions = array(CURLOPT_URL => $request->getUrl(), CURLOPT_CUSTOMREQUEST => $request->getMethod(), CURLOPT_CONNECTTIMEOUT => 10, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_USERAGENT => (string) $request->getHeader('User-Agent'), CURLOPT_ENCODING => '', CURLOPT_PORT => $request->getPort(), CURLOPT_HTTP_VERSION => $request->getProtocolVersion() === '1.0' ? CURL_HTTP_VERSION_1_0 : CURL_HTTP_VERSION_1_1, CURLOPT_HTTPHEADER => array(), CURLOPT_HEADERFUNCTION => array($mediator, 'receiveResponseHeader'));
     // Enable the progress function if the 'progress' param was set
     if ($requestCurlOptions->get('progress')) {
         $curlOptions[CURLOPT_PROGRESSFUNCTION] = array($mediator, 'progress');
         $curlOptions[CURLOPT_NOPROGRESS] = false;
     }
     // Enable curl debug information if the 'debug' param was set
     if (!$requestCurlOptions->get('disable_wire')) {
         $curlOptions[CURLOPT_STDERR] = fopen('php://temp', 'r+');
         $curlOptions[CURLOPT_VERBOSE] = true;
     }
     // HEAD requests need no response body, everything else might
     if ($request->getMethod() != 'HEAD') {
         $curlOptions[CURLOPT_WRITEFUNCTION] = array($mediator, 'writeResponseBody');
     }
     // Account for PHP installations with safe_mode or open_basedir enabled
     // @codeCoverageIgnoreStart
     if (CurlVersion::getInstance()->get('follow_location')) {
         $curlOptions[CURLOPT_FOLLOWLOCATION] = true;
         $curlOptions[CURLOPT_MAXREDIRS] = 5;
     }
     // @codeCoverageIgnoreEnd
     // Specify settings according to the HTTP method
     switch ($request->getMethod()) {
         case 'GET':
             $curlOptions[CURLOPT_HTTPGET] = true;
             break;
         case 'HEAD':
             $curlOptions[CURLOPT_NOBODY] = true;
             break;
         case 'POST':
             $curlOptions[CURLOPT_POST] = true;
             // Special handling for POST specific fields and files
             if (count($request->getPostFiles())) {
                 $curlOptions[CURLOPT_POSTFIELDS] = $request->getPostFields()->getAll();
                 $request->removeHeader('Content-Length');
             } elseif (count($request->getPostFields())) {
                 $curlOptions[CURLOPT_POSTFIELDS] = (string) $request->getPostFields();
                 $request->removeHeader('Content-Length');
             }
             break;
         case 'PUT':
         case 'PATCH':
             $curlOptions[CURLOPT_UPLOAD] = true;
             // Let cURL handle setting the Content-Length header
             $contentLength = $request->getHeader('Content-Length');
             if ($contentLength != null) {
                 $contentLength = (int) (string) $contentLength;
                 $curlOptions[CURLOPT_INFILESIZE] = $contentLength;
                 $tempHeaders['Content-Length'] = $contentLength;
                 $request->removeHeader('Content-Length');
             }
             break;
     }
     // Special handling for requests sending raw data
     if ($request instanceof EntityEnclosingRequestInterface) {
         // Don't modify POST requests using POST fields and files via cURL
         if (!isset($curlOptions[CURLOPT_POSTFIELDS])) {
             if ($request->getBody()) {
                 // Add a callback for curl to read data to send with the request
                 // only if a body was specified
                 $curlOptions[CURLOPT_READFUNCTION] = array($mediator, 'readRequestBody');
             } else {
                 // If no body is being sent, always send Content-Length of 0
                 $request->setHeader('Content-Length', 0);
                 $request->removeHeader('Transfer-Encoding');
                 // Need to remove CURLOPT_UPLOAD to prevent chunked encoding
                 unset($curlOptions[CURLOPT_UPLOAD]);
                 unset($curlOptions[CURLOPT_POST]);
             }
         }
         // If the Expect header is not present, prevent curl from adding it
         if (!$request->hasHeader('Expect')) {
             $curlOptions[CURLOPT_HTTPHEADER][] = 'Expect:';
         }
//.........这里部分代码省略.........

 /**
  * {@inheritdoc}
  */
 public function signRequest(RequestInterface $request, CredentialsInterface $credentials)
 {
     // Refresh the cached timestamp
     $this->getTimestamp(true);
     $longDate = $this->getDateTime(DateFormat::ISO8601);
     $shortDate = $this->getDateTime(DateFormat::SHORT);
     // Remove any previously set Authorization headers so that
     // exponential backoff works correctly
     $request->removeHeader('Authorization');
     // Requires a x-amz-date header or Date
     if ($request->hasHeader('x-amz-date') || !$request->hasHeader('Date')) {
         $request->setHeader('x-amz-date', $longDate);
     } else {
         $request->setHeader('Date', $this->getDateTime(DateFormat::RFC1123));
     }
     // Add the security token if one is present
     if ($credentials->getSecurityToken()) {
         $request->setHeader('x-amz-security-token', $credentials->getSecurityToken());
     }
     // Parse the service and region or use one that is explicitly set
     $url = null;
     if (!$this->regionName || !$this->serviceName) {
         $url = Url::factory($request->getUrl());
     }
     if (!($region = $this->regionName)) {
         $region = HostNameUtils::parseRegionName($url);
     }
     if (!($service = $this->serviceName)) {
         $service = HostNameUtils::parseServiceName($url);
     }
     $credentialScope = "{$shortDate}/{$region}/{$service}/aws4_request";
     $signingContext = $this->createCanonicalRequest($request);
     $signingContext['string_to_sign'] = "AWS4-HMAC-SHA256\n{$longDate}\n{$credentialScope}\n" . hash('sha256', $signingContext['canonical_request']);
     // Calculate the signing key using a series of derived keys
     $signingKey = $this->getSigningKey($shortDate, $region, $service, $credentials->getSecretKey());
     $signature = hash_hmac('sha256', $signingContext['string_to_sign'], $signingKey);
     $request->setHeader('Authorization', "AWS4-HMAC-SHA256 " . "Credential={$credentials->getAccessKeyId()}/{$credentialScope}, " . "SignedHeaders={$signingContext['signed_headers']}, Signature={$signature}");
     // Add debug information to the request
     $request->getParams()->set('aws.signature', $signingContext);
 }

 /**
  * Factory method to create a new curl handle based on an HTTP request.
  *
  * There are some helpful options you can set to enable specific behavior:
  * - debug:    Set to true to enable cURL debug functionality to track the actual headers sent over the wire.
  * - progress: Set to true to enable progress function callbacks.
  *
  * @param RequestInterface $request Request
  *
  * @return CurlHandle
  * @throws RuntimeException
  */
 public static function factory(RequestInterface $request)
 {
     $requestCurlOptions = $request->getCurlOptions();
     $mediator = new RequestMediator($request, $requestCurlOptions->get('emit_io'));
     $tempContentLength = null;
     $method = $request->getMethod();
     $bodyAsString = $requestCurlOptions->get(self::BODY_AS_STRING);
     // Array of default cURL options.
     $curlOptions = array(CURLOPT_URL => $request->getUrl(), CURLOPT_CONNECTTIMEOUT => 10, CURLOPT_RETURNTRANSFER => false, CURLOPT_HEADER => false, CURLOPT_PORT => $request->getPort(), CURLOPT_HTTPHEADER => array(), CURLOPT_HEADERFUNCTION => array($mediator, 'receiveResponseHeader'), CURLOPT_HTTP_VERSION => $request->getProtocolVersion() === '1.0' ? CURL_HTTP_VERSION_1_0 : CURL_HTTP_VERSION_1_1, CURLOPT_SSL_VERIFYPEER => 1, CURLOPT_SSL_VERIFYHOST => 2);
     if (defined('CURLOPT_PROTOCOLS')) {
         // Allow only HTTP and HTTPS protocols
         $curlOptions[CURLOPT_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
     }
     // Add CURLOPT_ENCODING if Accept-Encoding header is provided
     if ($acceptEncodingHeader = $request->getHeader('Accept-Encoding')) {
         $curlOptions[CURLOPT_ENCODING] = (string) $acceptEncodingHeader;
         // Let cURL set the Accept-Encoding header, prevents duplicate values
         $request->removeHeader('Accept-Encoding');
     }
     // Enable the progress function if the 'progress' param was set
     if ($requestCurlOptions->get('progress')) {
         $curlOptions[CURLOPT_PROGRESSFUNCTION] = array($mediator, 'progress');
         $curlOptions[CURLOPT_NOPROGRESS] = false;
     }
     // Enable curl debug information if the 'debug' param was set
     if ($requestCurlOptions->get('debug')) {
         $curlOptions[CURLOPT_STDERR] = fopen('php://temp', 'r+');
         // @codeCoverageIgnoreStart
         if (false === $curlOptions[CURLOPT_STDERR]) {
             throw new RuntimeException('Unable to create a stream for CURLOPT_STDERR');
         }
         // @codeCoverageIgnoreEnd
         $curlOptions[CURLOPT_VERBOSE] = true;
     }
     // HEAD requests need no response body, everything else might
     if ($method != 'HEAD') {
         $curlOptions[CURLOPT_WRITEFUNCTION] = array($mediator, 'writeResponseBody');
     }
     // Specify settings according to the HTTP method
     switch ($method) {
         case 'GET':
             $curlOptions[CURLOPT_HTTPGET] = true;
             break;
         case 'HEAD':
             $curlOptions[CURLOPT_NOBODY] = true;
             break;
         case 'POST':
             $curlOptions[CURLOPT_POST] = true;
             // Special handling for POST specific fields and files
             if (count($request->getPostFiles())) {
                 $fields = $request->getPostFields()->useUrlEncoding(false)->urlEncode();
                 foreach ($request->getPostFiles() as $key => $data) {
                     $prefixKeys = count($data) > 1;
                     foreach ($data as $index => $file) {
                         // Allow multiple files in the same key
                         $fieldKey = $prefixKeys ? "{$key}[{$index}]" : $key;
                         $fields[$fieldKey] = $file->getCurlString();
                     }
                 }
                 $curlOptions[CURLOPT_POSTFIELDS] = $fields;
                 $request->removeHeader('Content-Length');
             } elseif (count($request->getPostFields())) {
                 $curlOptions[CURLOPT_POSTFIELDS] = (string) $request->getPostFields()->useUrlEncoding(true);
                 $request->removeHeader('Content-Length');
             } elseif (!$request->getBody()) {
                 // Need to remove CURLOPT_POST to prevent chunked encoding for an empty POST
                 unset($curlOptions[CURLOPT_POST]);
                 $curlOptions[CURLOPT_CUSTOMREQUEST] = 'POST';
             }
             break;
         case 'PUT':
         case 'PATCH':
         case 'DELETE':
         default:
             $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
             if (!$bodyAsString) {
                 $curlOptions[CURLOPT_UPLOAD] = true;
                 // Let cURL handle setting the Content-Length header
                 if ($tempContentLength = $request->getHeader('Content-Length')) {
                     $tempContentLength = (int) (string) $tempContentLength;
                     $curlOptions[CURLOPT_INFILESIZE] = $tempContentLength;
                 }
             } elseif (!$request->hasHeader('Content-Type')) {
                 // Remove the curl generated Content-Type header if none was set manually
                 $curlOptions[CURLOPT_HTTPHEADER][] = 'Content-Type:';
             }
     }
     // Special handling for requests sending raw data
//.........这里部分代码省略.........