376 lines
13 KiB
PHP
376 lines
13 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpClient\Response;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\HttpClient\Chunk\FirstChunk;
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use Symfony\Component\HttpClient\Exception\TransportException;
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use Symfony\Component\HttpClient\Internal\Canary;
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use Symfony\Component\HttpClient\Internal\ClientState;
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use Symfony\Component\HttpClient\Internal\NativeClientState;
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use Symfony\Contracts\HttpClient\ResponseInterface;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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final class NativeResponse implements ResponseInterface, StreamableInterface
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{
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use CommonResponseTrait;
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use TransportResponseTrait;
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private $context;
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private $url;
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private $resolver;
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private $onProgress;
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private $remaining;
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private $buffer;
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private $multi;
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private $pauseExpiry = 0;
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/**
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* @internal
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*/
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public function __construct(NativeClientState $multi, $context, string $url, array $options, array &$info, callable $resolver, ?callable $onProgress, ?LoggerInterface $logger)
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{
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$this->multi = $multi;
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$this->id = $id = (int) $context;
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$this->context = $context;
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$this->url = $url;
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$this->logger = $logger;
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$this->timeout = $options['timeout'];
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$this->info = &$info;
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$this->resolver = $resolver;
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$this->onProgress = $onProgress;
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$this->inflate = !isset($options['normalized_headers']['accept-encoding']);
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$this->shouldBuffer = $options['buffer'] ?? true;
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// Temporary resource to dechunk the response stream
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$this->buffer = fopen('php://temp', 'w+');
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$info['user_data'] = $options['user_data'];
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++$multi->responseCount;
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$this->initializer = static function (self $response) {
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return null === $response->remaining;
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};
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$pauseExpiry = &$this->pauseExpiry;
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$info['pause_handler'] = static function (float $duration) use (&$pauseExpiry) {
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$pauseExpiry = 0 < $duration ? microtime(true) + $duration : 0;
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};
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$this->canary = new Canary(static function () use ($multi, $id) {
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if (null !== ($host = $multi->openHandles[$id][6] ?? null) && 0 >= --$multi->hosts[$host]) {
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unset($multi->hosts[$host]);
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}
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unset($multi->openHandles[$id], $multi->handlesActivity[$id]);
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});
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}
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/**
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* {@inheritdoc}
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*/
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public function getInfo(string $type = null)
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{
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if (!$info = $this->finalInfo) {
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$info = $this->info;
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$info['url'] = implode('', $info['url']);
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unset($info['size_body'], $info['request_header']);
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if (null === $this->buffer) {
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$this->finalInfo = $info;
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}
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}
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return null !== $type ? $info[$type] ?? null : $info;
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}
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public function __destruct()
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{
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try {
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$this->doDestruct();
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} finally {
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// Clear the DNS cache when all requests completed
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if (0 >= --$this->multi->responseCount) {
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$this->multi->responseCount = 0;
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$this->multi->dnsCache = [];
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}
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}
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}
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private function open(): void
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{
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$url = $this->url;
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set_error_handler(function ($type, $msg) use (&$url) {
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if (\E_NOTICE !== $type || 'fopen(): Content-type not specified assuming application/x-www-form-urlencoded' !== $msg) {
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throw new TransportException($msg);
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}
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$this->logger && $this->logger->info(sprintf('%s for "%s".', $msg, $url ?? $this->url));
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});
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try {
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$this->info['start_time'] = microtime(true);
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[$resolver, $url] = ($this->resolver)($this->multi);
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while (true) {
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$context = stream_context_get_options($this->context);
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if ($proxy = $context['http']['proxy'] ?? null) {
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$this->info['debug'] .= "* Establish HTTP proxy tunnel to {$proxy}\n";
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$this->info['request_header'] = $url;
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} else {
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$this->info['debug'] .= "* Trying {$this->info['primary_ip']}...\n";
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$this->info['request_header'] = $this->info['url']['path'].$this->info['url']['query'];
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}
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$this->info['request_header'] = sprintf("> %s %s HTTP/%s \r\n", $context['http']['method'], $this->info['request_header'], $context['http']['protocol_version']);
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$this->info['request_header'] .= implode("\r\n", $context['http']['header'])."\r\n\r\n";
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if (\array_key_exists('peer_name', $context['ssl']) && null === $context['ssl']['peer_name']) {
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unset($context['ssl']['peer_name']);
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$this->context = stream_context_create([], ['options' => $context] + stream_context_get_params($this->context));
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}
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// Send request and follow redirects when needed
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$this->handle = $h = fopen($url, 'r', false, $this->context);
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self::addResponseHeaders(stream_get_meta_data($h)['wrapper_data'], $this->info, $this->headers, $this->info['debug']);
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$url = $resolver($this->multi, $this->headers['location'][0] ?? null, $this->context);
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if (null === $url) {
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break;
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}
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$this->logger && $this->logger->info(sprintf('Redirecting: "%s %s"', $this->info['http_code'], $url ?? $this->url));
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}
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} catch (\Throwable $e) {
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$this->close();
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$this->multi->handlesActivity[$this->id][] = null;
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$this->multi->handlesActivity[$this->id][] = $e;
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return;
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} finally {
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$this->info['pretransfer_time'] = $this->info['total_time'] = microtime(true) - $this->info['start_time'];
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restore_error_handler();
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}
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if (isset($context['ssl']['capture_peer_cert_chain']) && isset(($context = stream_context_get_options($this->context))['ssl']['peer_certificate_chain'])) {
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$this->info['peer_certificate_chain'] = $context['ssl']['peer_certificate_chain'];
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}
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stream_set_blocking($h, false);
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$this->context = $this->resolver = null;
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// Create dechunk buffers
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if (isset($this->headers['content-length'])) {
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$this->remaining = (int) $this->headers['content-length'][0];
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} elseif ('chunked' === ($this->headers['transfer-encoding'][0] ?? null)) {
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stream_filter_append($this->buffer, 'dechunk', \STREAM_FILTER_WRITE);
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$this->remaining = -1;
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} else {
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$this->remaining = -2;
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}
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$this->multi->handlesActivity[$this->id] = [new FirstChunk()];
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if ('HEAD' === $context['http']['method'] || \in_array($this->info['http_code'], [204, 304], true)) {
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$this->multi->handlesActivity[$this->id][] = null;
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$this->multi->handlesActivity[$this->id][] = null;
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return;
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}
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$host = parse_url($this->info['redirect_url'] ?? $this->url, \PHP_URL_HOST);
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$this->multi->lastTimeout = null;
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$this->multi->openHandles[$this->id] = [&$this->pauseExpiry, $h, $this->buffer, $this->onProgress, &$this->remaining, &$this->info, $host];
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$this->multi->hosts[$host] = 1 + ($this->multi->hosts[$host] ?? 0);
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}
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/**
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* {@inheritdoc}
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*/
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private function close(): void
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{
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$this->canary->cancel();
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$this->handle = $this->buffer = $this->inflate = $this->onProgress = null;
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}
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/**
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* {@inheritdoc}
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*/
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private static function schedule(self $response, array &$runningResponses): void
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{
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if (!isset($runningResponses[$i = $response->multi->id])) {
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$runningResponses[$i] = [$response->multi, []];
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}
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$runningResponses[$i][1][$response->id] = $response;
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if (null === $response->buffer) {
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// Response already completed
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$response->multi->handlesActivity[$response->id][] = null;
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$response->multi->handlesActivity[$response->id][] = null !== $response->info['error'] ? new TransportException($response->info['error']) : null;
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}
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}
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/**
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* {@inheritdoc}
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*
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* @param NativeClientState $multi
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*/
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private static function perform(ClientState $multi, array &$responses = null): void
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{
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foreach ($multi->openHandles as $i => [$pauseExpiry, $h, $buffer, $onProgress]) {
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if ($pauseExpiry) {
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if (microtime(true) < $pauseExpiry) {
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continue;
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}
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$multi->openHandles[$i][0] = 0;
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}
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$hasActivity = false;
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$remaining = &$multi->openHandles[$i][4];
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$info = &$multi->openHandles[$i][5];
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$e = null;
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// Read incoming buffer and write it to the dechunk one
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try {
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if ($remaining && '' !== $data = (string) fread($h, 0 > $remaining ? 16372 : $remaining)) {
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fwrite($buffer, $data);
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$hasActivity = true;
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$multi->sleep = false;
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if (-1 !== $remaining) {
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$remaining -= \strlen($data);
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}
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}
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} catch (\Throwable $e) {
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$hasActivity = $onProgress = false;
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}
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if (!$hasActivity) {
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if ($onProgress) {
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try {
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// Notify the progress callback so that it can e.g. cancel
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// the request if the stream is inactive for too long
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$info['total_time'] = microtime(true) - $info['start_time'];
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$onProgress();
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} catch (\Throwable $e) {
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// no-op
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}
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}
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} elseif ('' !== $data = stream_get_contents($buffer, -1, 0)) {
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rewind($buffer);
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ftruncate($buffer, 0);
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if (null === $e) {
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$multi->handlesActivity[$i][] = $data;
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}
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}
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if (null !== $e || !$remaining || feof($h)) {
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// Stream completed
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$info['total_time'] = microtime(true) - $info['start_time'];
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$info['starttransfer_time'] = $info['starttransfer_time'] ?: $info['total_time'];
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if ($onProgress) {
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try {
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$onProgress(-1);
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} catch (\Throwable $e) {
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// no-op
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}
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}
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if (null === $e) {
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if (0 < $remaining) {
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$e = new TransportException(sprintf('Transfer closed with %s bytes remaining to read.', $remaining));
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} elseif (-1 === $remaining && fwrite($buffer, '-') && '' !== stream_get_contents($buffer, -1, 0)) {
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$e = new TransportException('Transfer closed with outstanding data remaining from chunked response.');
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}
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}
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$multi->handlesActivity[$i][] = null;
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$multi->handlesActivity[$i][] = $e;
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if (null !== ($host = $multi->openHandles[$i][6] ?? null) && 0 >= --$multi->hosts[$host]) {
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unset($multi->hosts[$host]);
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}
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unset($multi->openHandles[$i]);
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$multi->sleep = false;
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}
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}
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if (null === $responses) {
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return;
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}
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$maxHosts = $multi->maxHostConnections;
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foreach ($responses as $i => $response) {
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if (null !== $response->remaining || null === $response->buffer) {
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continue;
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}
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if ($response->pauseExpiry && microtime(true) < $response->pauseExpiry) {
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// Create empty open handles to tell we still have pending requests
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$multi->openHandles[$i] = [\INF, null, null, null];
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} elseif ($maxHosts && $maxHosts > ($multi->hosts[parse_url($response->url, \PHP_URL_HOST)] ?? 0)) {
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// Open the next pending request - this is a blocking operation so we do only one of them
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$response->open();
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$multi->sleep = false;
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self::perform($multi);
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$maxHosts = 0;
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}
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}
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}
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/**
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* {@inheritdoc}
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*
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* @param NativeClientState $multi
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*/
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private static function select(ClientState $multi, float $timeout): int
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{
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if (!$multi->sleep = !$multi->sleep) {
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return -1;
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}
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$_ = $handles = [];
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$now = null;
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foreach ($multi->openHandles as [$pauseExpiry, $h]) {
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if (null === $h) {
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continue;
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}
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if ($pauseExpiry && ($now ?? $now = microtime(true)) < $pauseExpiry) {
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$timeout = min($timeout, $pauseExpiry - $now);
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continue;
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}
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$handles[] = $h;
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}
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if (!$handles) {
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usleep((int) (1E6 * $timeout));
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return 0;
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}
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return stream_select($handles, $_, $_, (int) $timeout, (int) (1E6 * ($timeout - (int) $timeout)));
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}
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}
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