CurlFactory.php
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CurlFactory.php
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	<?php

	namespace GuzzleHttp\Handler;

	use GuzzleHttp\Exception\ConnectException;
	use GuzzleHttp\Exception\RequestException;
	use GuzzleHttp\Promise as P;
	use GuzzleHttp\Promise\FulfilledPromise;
	use GuzzleHttp\Promise\PromiseInterface;
	use GuzzleHttp\Psr7\LazyOpenStream;
	use GuzzleHttp\TransferStats;
	use GuzzleHttp\Utils;
	use Psr\Http\Message\RequestInterface;
	use Psr\Http\Message\UriInterface;

	/**
	* Creates curl resources from a request
	*
	* @final
	*/
	class CurlFactory implements CurlFactoryInterface
	{
	public const CURL_VERSION_STR = 'curl_version';

	/**
	* @deprecated
	*/
	public const LOW_CURL_VERSION_NUMBER = '7.21.2';

	/**
	* @var resource[]\|\CurlHandle[]
	*/
	private $handles = [];

	/**
	* @var int Total number of idle handles to keep in cache
	*/
	private $maxHandles;

	/**
	* @param int $maxHandles Maximum number of idle handles.
	*/
	public function __construct(int $maxHandles)
	{
	$this->maxHandles = $maxHandles;
	}

	public function create(RequestInterface $request, array $options): EasyHandle
	{
	$protocolVersion = $request->getProtocolVersion();

	if ('2' === $protocolVersion \|\| '2.0' === $protocolVersion) {
	if (!self::supportsHttp2()) {
	throw new ConnectException('HTTP/2 is supported by the cURL handler, however libcurl is built without HTTP/2 support.', $request);
	}
	} elseif ('1.0' !== $protocolVersion && '1.1' !== $protocolVersion) {
	throw new ConnectException(sprintf('HTTP/%s is not supported by the cURL handler.', $protocolVersion), $request);
	}

	if (isset($options['curl']['body_as_string'])) {
	$options['_body_as_string'] = $options['curl']['body_as_string'];
	unset($options['curl']['body_as_string']);
	}

	$easy = new EasyHandle();
	$easy->request = $request;
	$easy->options = $options;
	$conf = $this->getDefaultConf($easy);
	$this->applyMethod($easy, $conf);
	$this->applyHandlerOptions($easy, $conf);
	$this->applyHeaders($easy, $conf);
	unset($conf['_headers']);

	// Add handler options from the request configuration options
	if (isset($options['curl'])) {
	$conf = \array_replace($conf, $options['curl']);
	}

	$conf[\CURLOPT_HEADERFUNCTION] = $this->createHeaderFn($easy);
	$easy->handle = $this->handles ? \array_pop($this->handles) : \curl_init();
	curl_setopt_array($easy->handle, $conf);

	return $easy;
	}

	private static function supportsHttp2(): bool
	{
	static $supportsHttp2 = null;

	if (null === $supportsHttp2) {
	$supportsHttp2 = self::supportsTls12()
	&& defined('CURL_VERSION_HTTP2')
	&& (\CURL_VERSION_HTTP2 & \curl_version()['features']);
	}

	return $supportsHttp2;
	}

	private static function supportsTls12(): bool
	{
	static $supportsTls12 = null;

	if (null === $supportsTls12) {
	$supportsTls12 = \CURL_SSLVERSION_TLSv1_2 & \curl_version()['features'];
	}

	return $supportsTls12;
	}

	private static function supportsTls13(): bool
	{
	static $supportsTls13 = null;

	if (null === $supportsTls13) {
	$supportsTls13 = defined('CURL_SSLVERSION_TLSv1_3')
	&& (\CURL_SSLVERSION_TLSv1_3 & \curl_version()['features']);
	}

	return $supportsTls13;
	}

	public function release(EasyHandle $easy): void
	{
	$resource = $easy->handle;
	unset($easy->handle);

	if (\count($this->handles) >= $this->maxHandles) {
	\curl_close($resource);
	} else {
	// Remove all callback functions as they can hold onto references
	// and are not cleaned up by curl_reset. Using curl_setopt_array
	// does not work for some reason, so removing each one
	// individually.
	\curl_setopt($resource, \CURLOPT_HEADERFUNCTION, null);
	\curl_setopt($resource, \CURLOPT_READFUNCTION, null);
	\curl_setopt($resource, \CURLOPT_WRITEFUNCTION, null);
	\curl_setopt($resource, \CURLOPT_PROGRESSFUNCTION, null);
	\curl_reset($resource);
	$this->handles[] = $resource;
	}
	}

	/**
	* Completes a cURL transaction, either returning a response promise or a
	* rejected promise.
	*
	* @param callable(RequestInterface, array): PromiseInterface $handler
	* @param CurlFactoryInterface $factory Dictates how the handle is released
	*/
	public static function finish(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface
	{
	if (isset($easy->options['on_stats'])) {
	self::invokeStats($easy);
	}

	if (!$easy->response \|\| $easy->errno) {
	return self::finishError($handler, $easy, $factory);
	}

	// Return the response if it is present and there is no error.
	$factory->release($easy);

	// Rewind the body of the response if possible.
	$body = $easy->response->getBody();
	if ($body->isSeekable()) {
	$body->rewind();
	}

	return new FulfilledPromise($easy->response);
	}

	private static function invokeStats(EasyHandle $easy): void
	{
	$curlStats = \curl_getinfo($easy->handle);
	$curlStats['appconnect_time'] = \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME);
	$stats = new TransferStats(
	$easy->request,
	$easy->response,
	$curlStats['total_time'],
	$easy->errno,
	$curlStats
	);
	($easy->options['on_stats'])($stats);
	}

	/**
	* @param callable(RequestInterface, array): PromiseInterface $handler
	*/
	private static function finishError(callable $handler, EasyHandle $easy, CurlFactoryInterface $factory): PromiseInterface
	{
	// Get error information and release the handle to the factory.
	$ctx = [
	'errno' => $easy->errno,
	'error' => \curl_error($easy->handle),
	'appconnect_time' => \curl_getinfo($easy->handle, \CURLINFO_APPCONNECT_TIME),
	] + \curl_getinfo($easy->handle);
	$ctx[self::CURL_VERSION_STR] = self::getCurlVersion();
	$factory->release($easy);

	// Retry when nothing is present or when curl failed to rewind.
	if (empty($easy->options['_err_message']) && (!$easy->errno \|\| $easy->errno == 65)) {
	return self::retryFailedRewind($handler, $easy, $ctx);
	}

	return self::createRejection($easy, $ctx);
	}

	private static function getCurlVersion(): string
	{
	static $curlVersion = null;

	if (null === $curlVersion) {
	$curlVersion = \curl_version()['version'];
	}

	return $curlVersion;
	}

	private static function createRejection(EasyHandle $easy, array $ctx): PromiseInterface
	{
	static $connectionErrors = [
	\CURLE_OPERATION_TIMEOUTED => true,
	\CURLE_COULDNT_RESOLVE_HOST => true,
	\CURLE_COULDNT_CONNECT => true,
	\CURLE_SSL_CONNECT_ERROR => true,
	\CURLE_GOT_NOTHING => true,
	];

	if ($easy->createResponseException) {
	return P\Create::rejectionFor(
	new RequestException(
	'An error was encountered while creating the response',
	$easy->request,
	$easy->response,
	$easy->createResponseException,
	$ctx
	)
	);
	}

	// If an exception was encountered during the onHeaders event, then
	// return a rejected promise that wraps that exception.
	if ($easy->onHeadersException) {
	return P\Create::rejectionFor(
	new RequestException(
	'An error was encountered during the on_headers event',
	$easy->request,
	$easy->response,
	$easy->onHeadersException,
	$ctx
	)
	);
	}

	$uri = $easy->request->getUri();

	$sanitizedError = self::sanitizeCurlError($ctx['error'] ?? '', $uri);

	$message = \sprintf(
	'cURL error %s: %s (%s)',
	$ctx['errno'],
	$sanitizedError,
	'see https://curl.haxx.se/libcurl/c/libcurl-errors.html'
	);

	if ('' !== $sanitizedError) {
	$redactedUriString = \GuzzleHttp\Psr7\Utils::redactUserInfo($uri)->__toString();
	if ($redactedUriString !== '' && false === \strpos($sanitizedError, $redactedUriString)) {
	$message .= \sprintf(' for %s', $redactedUriString);
	}
	}

	// Create a connection exception if it was a specific error code.
	$error = isset($connectionErrors[$easy->errno])
	? new ConnectException($message, $easy->request, null, $ctx)
	: new RequestException($message, $easy->request, $easy->response, null, $ctx);

	return P\Create::rejectionFor($error);
	}

	private static function sanitizeCurlError(string $error, UriInterface $uri): string
	{
	if ('' === $error) {
	return $error;
	}

	$baseUri = $uri->withQuery('')->withFragment('');
	$baseUriString = $baseUri->__toString();

	if ('' === $baseUriString) {
	return $error;
	}

	$redactedUriString = \GuzzleHttp\Psr7\Utils::redactUserInfo($baseUri)->__toString();

	return str_replace($baseUriString, $redactedUriString, $error);
	}

	/**
	* @return array<int\|string, mixed>
	*/
	private function getDefaultConf(EasyHandle $easy): array
	{
	$conf = [
	'_headers' => $easy->request->getHeaders(),
	\CURLOPT_CUSTOMREQUEST => $easy->request->getMethod(),
	\CURLOPT_URL => (string) $easy->request->getUri()->withFragment(''),
	\CURLOPT_RETURNTRANSFER => false,
	\CURLOPT_HEADER => false,
	\CURLOPT_CONNECTTIMEOUT => 300,
	];

	if (\defined('CURLOPT_PROTOCOLS')) {
	$conf[\CURLOPT_PROTOCOLS] = \CURLPROTO_HTTP \| \CURLPROTO_HTTPS;
	}

	$version = $easy->request->getProtocolVersion();

	if ('2' === $version \|\| '2.0' === $version) {
	$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_2_0;
	} elseif ('1.1' === $version) {
	$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_1;
	} else {
	$conf[\CURLOPT_HTTP_VERSION] = \CURL_HTTP_VERSION_1_0;
	}

	return $conf;
	}

	private function applyMethod(EasyHandle $easy, array &$conf): void
	{
	$body = $easy->request->getBody();
	$size = $body->getSize();

	if ($size === null \|\| $size > 0) {
	$this->applyBody($easy->request, $easy->options, $conf);

	return;
	}

	$method = $easy->request->getMethod();
	if ($method === 'PUT' \|\| $method === 'POST') {
	// See https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.2
	if (!$easy->request->hasHeader('Content-Length')) {
	$conf[\CURLOPT_HTTPHEADER][] = 'Content-Length: 0';
	}
	} elseif ($method === 'HEAD') {
	$conf[\CURLOPT_NOBODY] = true;
	unset(
	$conf[\CURLOPT_WRITEFUNCTION],
	$conf[\CURLOPT_READFUNCTION],
	$conf[\CURLOPT_FILE],
	$conf[\CURLOPT_INFILE]
	);
	}
	}

	private function applyBody(RequestInterface $request, array $options, array &$conf): void
	{
	$size = $request->hasHeader('Content-Length')
	? (int) $request->getHeaderLine('Content-Length')
	: null;

	// Send the body as a string if the size is less than 1MB OR if the
	// [curl][body_as_string] request value is set.
	if (($size !== null && $size < 1000000) \|\| !empty($options['_body_as_string'])) {
	$conf[\CURLOPT_POSTFIELDS] = (string) $request->getBody();
	// Don't duplicate the Content-Length header
	$this->removeHeader('Content-Length', $conf);
	$this->removeHeader('Transfer-Encoding', $conf);
	} else {
	$conf[\CURLOPT_UPLOAD] = true;
	if ($size !== null) {
	$conf[\CURLOPT_INFILESIZE] = $size;
	$this->removeHeader('Content-Length', $conf);
	}
	$body = $request->getBody();
	if ($body->isSeekable()) {
	$body->rewind();
	}
	$conf[\CURLOPT_READFUNCTION] = static function ($ch, $fd, $length) use ($body) {
	return $body->read($length);
	};
	}

	// If the Expect header is not present, prevent curl from adding it
	if (!$request->hasHeader('Expect')) {
	$conf[\CURLOPT_HTTPHEADER][] = 'Expect:';
	}

	// cURL sometimes adds a content-type by default. Prevent this.
	if (!$request->hasHeader('Content-Type')) {
	$conf[\CURLOPT_HTTPHEADER][] = 'Content-Type:';
	}
	}

	private function applyHeaders(EasyHandle $easy, array &$conf): void
	{
	foreach ($conf['_headers'] as $name => $values) {
	foreach ($values as $value) {
	$value = (string) $value;
	if ($value === '') {
	// cURL requires a special format for empty headers.
	// See https://github.com/guzzle/guzzle/issues/1882 for more details.
	$conf[\CURLOPT_HTTPHEADER][] = "$name;";
	} else {
	$conf[\CURLOPT_HTTPHEADER][] = "$name: $value";
	}
	}
	}

	// Remove the Accept header if one was not set
	if (!$easy->request->hasHeader('Accept')) {
	$conf[\CURLOPT_HTTPHEADER][] = 'Accept:';
	}
	}

	/**
	* Remove a header from the options array.
	*
	* @param string $name Case-insensitive header to remove
	* @param array $options Array of options to modify
	*/
	private function removeHeader(string $name, array &$options): void
	{
	foreach (\array_keys($options['_headers']) as $key) {
	if (!\strcasecmp($key, $name)) {
	unset($options['_headers'][$key]);

	return;
	}
	}
	}

	private function applyHandlerOptions(EasyHandle $easy, array &$conf): void
	{
	$options = $easy->options;
	if (isset($options['verify'])) {
	if ($options['verify'] === false) {
	unset($conf[\CURLOPT_CAINFO]);
	$conf[\CURLOPT_SSL_VERIFYHOST] = 0;
	$conf[\CURLOPT_SSL_VERIFYPEER] = false;
	} else {
	$conf[\CURLOPT_SSL_VERIFYHOST] = 2;
	$conf[\CURLOPT_SSL_VERIFYPEER] = true;
	if (\is_string($options['verify'])) {
	// Throw an error if the file/folder/link path is not valid or doesn't exist.
	if (!\file_exists($options['verify'])) {
	throw new \InvalidArgumentException("SSL CA bundle not found: {$options['verify']}");
	}
	// If it's a directory or a link to a directory use CURLOPT_CAPATH.
	// If not, it's probably a file, or a link to a file, so use CURLOPT_CAINFO.
	if (
	\is_dir($options['verify'])
	\|\| (
	\is_link($options['verify']) === true
	&& ($verifyLink = \readlink($options['verify'])) !== false
	&& \is_dir($verifyLink)
	)
	) {
	$conf[\CURLOPT_CAPATH] = $options['verify'];
	} else {
	$conf[\CURLOPT_CAINFO] = $options['verify'];
	}
	}
	}
	}

	if (!isset($options['curl'][\CURLOPT_ENCODING]) && !empty($options['decode_content'])) {
	$accept = $easy->request->getHeaderLine('Accept-Encoding');
	if ($accept) {
	$conf[\CURLOPT_ENCODING] = $accept;
	} else {
	// The empty string enables all available decoders and implicitly
	// sets a matching 'Accept-Encoding' header.
	$conf[\CURLOPT_ENCODING] = '';
	// But as the user did not specify any encoding preference,
	// let's leave it up to server by preventing curl from sending
	// the header, which will be interpreted as 'Accept-Encoding: *'.
	// https://www.rfc-editor.org/rfc/rfc9110#field.accept-encoding
	$conf[\CURLOPT_HTTPHEADER][] = 'Accept-Encoding:';
	}
	}

	if (!isset($options['sink'])) {
	// Use a default temp stream if no sink was set.
	$options['sink'] = \GuzzleHttp\Psr7\Utils::tryFopen('php://temp', 'w+');
	}
	$sink = $options['sink'];
	if (!\is_string($sink)) {
	$sink = \GuzzleHttp\Psr7\Utils::streamFor($sink);
	} elseif (!\is_dir(\dirname($sink))) {
	// Ensure that the directory exists before failing in curl.
	throw new \RuntimeException(\sprintf('Directory %s does not exist for sink value of %s', \dirname($sink), $sink));
	} else {
	$sink = new LazyOpenStream($sink, 'w+');
	}
	$easy->sink = $sink;
	$conf[\CURLOPT_WRITEFUNCTION] = static function ($ch, $write) use ($sink): int {
	return $sink->write($write);
	};

	$timeoutRequiresNoSignal = false;
	if (isset($options['timeout'])) {
	$timeoutRequiresNoSignal \|= $options['timeout'] < 1;
	$conf[\CURLOPT_TIMEOUT_MS] = $options['timeout'] * 1000;
	}

	// CURL default value is CURL_IPRESOLVE_WHATEVER
	if (isset($options['force_ip_resolve'])) {
	if ('v4' === $options['force_ip_resolve']) {
	$conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V4;
	} elseif ('v6' === $options['force_ip_resolve']) {
	$conf[\CURLOPT_IPRESOLVE] = \CURL_IPRESOLVE_V6;
	}
	}

	if (isset($options['connect_timeout'])) {
	$timeoutRequiresNoSignal \|= $options['connect_timeout'] < 1;
	$conf[\CURLOPT_CONNECTTIMEOUT_MS] = $options['connect_timeout'] * 1000;
	}

	if ($timeoutRequiresNoSignal && \strtoupper(\substr(\PHP_OS, 0, 3)) !== 'WIN') {
	$conf[\CURLOPT_NOSIGNAL] = true;
	}

	if (isset($options['proxy'])) {
	if (!\is_array($options['proxy'])) {
	$conf[\CURLOPT_PROXY] = $options['proxy'];
	} else {
	$scheme = $easy->request->getUri()->getScheme();
	if (isset($options['proxy'][$scheme])) {
	$host = $easy->request->getUri()->getHost();
	if (isset($options['proxy']['no']) && Utils::isHostInNoProxy($host, $options['proxy']['no'])) {
	unset($conf[\CURLOPT_PROXY]);
	} else {
	$conf[\CURLOPT_PROXY] = $options['proxy'][$scheme];
	}
	}
	}
	}

	if (isset($options['crypto_method'])) {
	$protocolVersion = $easy->request->getProtocolVersion();

	// If HTTP/2, upgrade TLS 1.0 and 1.1 to 1.2
	if ('2' === $protocolVersion \|\| '2.0' === $protocolVersion) {
	if (
	\STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT === $options['crypto_method']
	\|\| \STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT === $options['crypto_method']
	\|\| \STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT === $options['crypto_method']
	) {
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_2;
	} elseif (defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT') && \STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT === $options['crypto_method']) {
	if (!self::supportsTls13()) {
	throw new \InvalidArgumentException('Invalid crypto_method request option: TLS 1.3 not supported by your version of cURL');
	}
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_3;
	} else {
	throw new \InvalidArgumentException('Invalid crypto_method request option: unknown version provided');
	}
	} elseif (\STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT === $options['crypto_method']) {
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_0;
	} elseif (\STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT === $options['crypto_method']) {
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_1;
	} elseif (\STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT === $options['crypto_method']) {
	if (!self::supportsTls12()) {
	throw new \InvalidArgumentException('Invalid crypto_method request option: TLS 1.2 not supported by your version of cURL');
	}
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_2;
	} elseif (defined('STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT') && \STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT === $options['crypto_method']) {
	if (!self::supportsTls13()) {
	throw new \InvalidArgumentException('Invalid crypto_method request option: TLS 1.3 not supported by your version of cURL');
	}
	$conf[\CURLOPT_SSLVERSION] = \CURL_SSLVERSION_TLSv1_3;
	} else {
	throw new \InvalidArgumentException('Invalid crypto_method request option: unknown version provided');
	}
	}

	if (isset($options['cert'])) {
	$cert = $options['cert'];
	if (\is_array($cert)) {
	$conf[\CURLOPT_SSLCERTPASSWD] = $cert[1];
	$cert = $cert[0];
	}
	if (!\file_exists($cert)) {
	throw new \InvalidArgumentException("SSL certificate not found: {$cert}");
	}
	// OpenSSL (versions 0.9.3 and later) also support "P12" for PKCS#12-encoded files.
	// see https://curl.se/libcurl/c/CURLOPT_SSLCERTTYPE.html
	$ext = pathinfo($cert, \PATHINFO_EXTENSION);
	if (preg_match('#^(der\|p12)$#i', $ext)) {
	$conf[\CURLOPT_SSLCERTTYPE] = strtoupper($ext);
	}
	$conf[\CURLOPT_SSLCERT] = $cert;
	}

	if (isset($options['ssl_key'])) {
	if (\is_array($options['ssl_key'])) {
	if (\count($options['ssl_key']) === 2) {
	[$sslKey, $conf[\CURLOPT_SSLKEYPASSWD]] = $options['ssl_key'];
	} else {
	[$sslKey] = $options['ssl_key'];
	}
	}

	$sslKey = $sslKey ?? $options['ssl_key'];

	if (!\file_exists($sslKey)) {
	throw new \InvalidArgumentException("SSL private key not found: {$sslKey}");
	}
	$conf[\CURLOPT_SSLKEY] = $sslKey;
	}

	if (isset($options['progress'])) {
	$progress = $options['progress'];
	if (!\is_callable($progress)) {
	throw new \InvalidArgumentException('progress client option must be callable');
	}
	$conf[\CURLOPT_NOPROGRESS] = false;
	$conf[\CURLOPT_PROGRESSFUNCTION] = static function ($resource, int $downloadSize, int $downloaded, int $uploadSize, int $uploaded) use ($progress) {
	$progress($downloadSize, $downloaded, $uploadSize, $uploaded);
	};
	}

	if (!empty($options['debug'])) {
	$conf[\CURLOPT_STDERR] = Utils::debugResource($options['debug']);
	$conf[\CURLOPT_VERBOSE] = true;
	}
	}

	/**
	* This function ensures that a response was set on a transaction. If one
	* was not set, then the request is retried if possible. This error
	* typically means you are sending a payload, curl encountered a
	* "Connection died, retrying a fresh connect" error, tried to rewind the
	* stream, and then encountered a "necessary data rewind wasn't possible"
	* error, causing the request to be sent through curl_multi_info_read()
	* without an error status.
	*
	* @param callable(RequestInterface, array): PromiseInterface $handler
	*/
	private static function retryFailedRewind(callable $handler, EasyHandle $easy, array $ctx): PromiseInterface
	{
	try {
	// Only rewind if the body has been read from.
	$body = $easy->request->getBody();
	if ($body->tell() > 0) {
	$body->rewind();
	}
	} catch (\RuntimeException $e) {
	$ctx['error'] = 'The connection unexpectedly failed without '
	.'providing an error. The request would have been retried, '
	.'but attempting to rewind the request body failed. '
	.'Exception: '.$e;

	return self::createRejection($easy, $ctx);
	}

	// Retry no more than 3 times before giving up.
	if (!isset($easy->options['_curl_retries'])) {
	$easy->options['_curl_retries'] = 1;
	} elseif ($easy->options['_curl_retries'] == 2) {
	$ctx['error'] = 'The cURL request was retried 3 times '
	.'and did not succeed. The most likely reason for the failure '
	.'is that cURL was unable to rewind the body of the request '
	.'and subsequent retries resulted in the same error. Turn on '
	.'the debug option to see what went wrong. See '
	.'https://bugs.php.net/bug.php?id=47204 for more information.';

	return self::createRejection($easy, $ctx);
	} else {
	++$easy->options['_curl_retries'];
	}

	return $handler($easy->request, $easy->options);
	}

	private function createHeaderFn(EasyHandle $easy): callable
	{
	if (isset($easy->options['on_headers'])) {
	$onHeaders = $easy->options['on_headers'];

	if (!\is_callable($onHeaders)) {
	throw new \InvalidArgumentException('on_headers must be callable');
	}
	} else {
	$onHeaders = null;
	}

	return static function ($ch, $h) use (
	$onHeaders,
	$easy,
	&$startingResponse
	) {
	$value = \trim($h);
	if ($value === '') {
	$startingResponse = true;
	try {
	$easy->createResponse();
	} catch (\Exception $e) {
	$easy->createResponseException = $e;

	return -1;
	}
	if ($onHeaders !== null) {
	try {
	$onHeaders($easy->response);
	} catch (\Exception $e) {
	// Associate the exception with the handle and trigger
	// a curl header write error by returning 0.
	$easy->onHeadersException = $e;

	return -1;
	}
	}
	} elseif ($startingResponse) {
	$startingResponse = false;
	$easy->headers = [$value];
	} else {
	$easy->headers[] = $value;
	}

	return \strlen($h);
	};
	}

	public function __destruct()
	{
	foreach ($this->handles as $id => $handle) {
	\curl_close($handle);
	unset($this->handles[$id]);
	}
	}
	}

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