--- /dev/null
+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Exception\ConnectException;
+use GuzzleHttp\Promise\FulfilledPromise;
+use GuzzleHttp\Promise\RejectedPromise;
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Psr7;
+use GuzzleHttp\TransferStats;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * HTTP handler that uses PHP's HTTP stream wrapper.
+ */
+class StreamHandler
+{
+ private $lastHeaders = [];
+
+ /**
+ * Sends an HTTP request.
+ *
+ * @param RequestInterface $request Request to send.
+ * @param array $options Request transfer options.
+ *
+ * @return PromiseInterface
+ */
+ public function __invoke(RequestInterface $request, array $options)
+ {
+ // Sleep if there is a delay specified.
+ if (isset($options['delay'])) {
+ usleep($options['delay'] * 1000);
+ }
+
+ $startTime = isset($options['on_stats']) ? microtime(true) : null;
+
+ try {
+ // Does not support the expect header.
+ $request = $request->withoutHeader('Expect');
+
+ // Append a content-length header if body size is zero to match
+ // cURL's behavior.
+ if (0 === $request->getBody()->getSize()) {
+ $request = $request->withHeader('Content-Length', 0);
+ }
+
+ return $this->createResponse(
+ $request,
+ $options,
+ $this->createStream($request, $options),
+ $startTime
+ );
+ } catch (\InvalidArgumentException $e) {
+ throw $e;
+ } catch (\Exception $e) {
+ // Determine if the error was a networking error.
+ $message = $e->getMessage();
+ // This list can probably get more comprehensive.
+ if (strpos($message, 'getaddrinfo') // DNS lookup failed
+ || strpos($message, 'Connection refused')
+ || strpos($message, "couldn't connect to host") // error on HHVM
+ ) {
+ $e = new ConnectException($e->getMessage(), $request, $e);
+ }
+ $e = RequestException::wrapException($request, $e);
+ $this->invokeStats($options, $request, $startTime, null, $e);
+
+ return new RejectedPromise($e);
+ }
+ }
+
+ private function invokeStats(
+ array $options,
+ RequestInterface $request,
+ $startTime,
+ ResponseInterface $response = null,
+ $error = null
+ ) {
+ if (isset($options['on_stats'])) {
+ $stats = new TransferStats(
+ $request,
+ $response,
+ microtime(true) - $startTime,
+ $error,
+ []
+ );
+ call_user_func($options['on_stats'], $stats);
+ }
+ }
+
+ private function createResponse(
+ RequestInterface $request,
+ array $options,
+ $stream,
+ $startTime
+ ) {
+ $hdrs = $this->lastHeaders;
+ $this->lastHeaders = [];
+ $parts = explode(' ', array_shift($hdrs), 3);
+ $ver = explode('/', $parts[0])[1];
+ $status = $parts[1];
+ $reason = isset($parts[2]) ? $parts[2] : null;
+ $headers = \GuzzleHttp\headers_from_lines($hdrs);
+ list ($stream, $headers) = $this->checkDecode($options, $headers, $stream);
+ $stream = Psr7\stream_for($stream);
+ $sink = $stream;
+
+ if (strcasecmp('HEAD', $request->getMethod())) {
+ $sink = $this->createSink($stream, $options);
+ }
+
+ $response = new Psr7\Response($status, $headers, $sink, $ver, $reason);
+
+ if (isset($options['on_headers'])) {
+ try {
+ $options['on_headers']($response);
+ } catch (\Exception $e) {
+ $msg = 'An error was encountered during the on_headers event';
+ $ex = new RequestException($msg, $request, $response, $e);
+ return new RejectedPromise($ex);
+ }
+ }
+
+ // Do not drain when the request is a HEAD request because they have
+ // no body.
+ if ($sink !== $stream) {
+ $this->drain(
+ $stream,
+ $sink,
+ $response->getHeaderLine('Content-Length')
+ );
+ }
+
+ $this->invokeStats($options, $request, $startTime, $response, null);
+
+ return new FulfilledPromise($response);
+ }
+
+ private function createSink(StreamInterface $stream, array $options)
+ {
+ if (!empty($options['stream'])) {
+ return $stream;
+ }
+
+ $sink = isset($options['sink'])
+ ? $options['sink']
+ : fopen('php://temp', 'r+');
+
+ return is_string($sink)
+ ? new Psr7\LazyOpenStream($sink, 'w+')
+ : Psr7\stream_for($sink);
+ }
+
+ private function checkDecode(array $options, array $headers, $stream)
+ {
+ // Automatically decode responses when instructed.
+ if (!empty($options['decode_content'])) {
+ $normalizedKeys = \GuzzleHttp\normalize_header_keys($headers);
+ if (isset($normalizedKeys['content-encoding'])) {
+ $encoding = $headers[$normalizedKeys['content-encoding']];
+ if ($encoding[0] === 'gzip' || $encoding[0] === 'deflate') {
+ $stream = new Psr7\InflateStream(
+ Psr7\stream_for($stream)
+ );
+ $headers['x-encoded-content-encoding']
+ = $headers[$normalizedKeys['content-encoding']];
+ // Remove content-encoding header
+ unset($headers[$normalizedKeys['content-encoding']]);
+ // Fix content-length header
+ if (isset($normalizedKeys['content-length'])) {
+ $headers['x-encoded-content-length']
+ = $headers[$normalizedKeys['content-length']];
+
+ $length = (int) $stream->getSize();
+ if ($length === 0) {
+ unset($headers[$normalizedKeys['content-length']]);
+ } else {
+ $headers[$normalizedKeys['content-length']] = [$length];
+ }
+ }
+ }
+ }
+ }
+
+ return [$stream, $headers];
+ }
+
+ /**
+ * Drains the source stream into the "sink" client option.
+ *
+ * @param StreamInterface $source
+ * @param StreamInterface $sink
+ * @param string $contentLength Header specifying the amount of
+ * data to read.
+ *
+ * @return StreamInterface
+ * @throws \RuntimeException when the sink option is invalid.
+ */
+ private function drain(
+ StreamInterface $source,
+ StreamInterface $sink,
+ $contentLength
+ ) {
+ // If a content-length header is provided, then stop reading once
+ // that number of bytes has been read. This can prevent infinitely
+ // reading from a stream when dealing with servers that do not honor
+ // Connection: Close headers.
+ Psr7\copy_to_stream(
+ $source,
+ $sink,
+ (strlen($contentLength) > 0 && (int) $contentLength > 0) ? (int) $contentLength : -1
+ );
+
+ $sink->seek(0);
+ $source->close();
+
+ return $sink;
+ }
+
+ /**
+ * Create a resource and check to ensure it was created successfully
+ *
+ * @param callable $callback Callable that returns stream resource
+ *
+ * @return resource
+ * @throws \RuntimeException on error
+ */
+ private function createResource(callable $callback)
+ {
+ $errors = null;
+ set_error_handler(function ($_, $msg, $file, $line) use (&$errors) {
+ $errors[] = [
+ 'message' => $msg,
+ 'file' => $file,
+ 'line' => $line
+ ];
+ return true;
+ });
+
+ $resource = $callback();
+ restore_error_handler();
+
+ if (!$resource) {
+ $message = 'Error creating resource: ';
+ foreach ($errors as $err) {
+ foreach ($err as $key => $value) {
+ $message .= "[$key] $value" . PHP_EOL;
+ }
+ }
+ throw new \RuntimeException(trim($message));
+ }
+
+ return $resource;
+ }
+
+ private function createStream(RequestInterface $request, array $options)
+ {
+ static $methods;
+ if (!$methods) {
+ $methods = array_flip(get_class_methods(__CLASS__));
+ }
+
+ // HTTP/1.1 streams using the PHP stream wrapper require a
+ // Connection: close header
+ if ($request->getProtocolVersion() == '1.1'
+ && !$request->hasHeader('Connection')
+ ) {
+ $request = $request->withHeader('Connection', 'close');
+ }
+
+ // Ensure SSL is verified by default
+ if (!isset($options['verify'])) {
+ $options['verify'] = true;
+ }
+
+ $params = [];
+ $context = $this->getDefaultContext($request, $options);
+
+ if (isset($options['on_headers']) && !is_callable($options['on_headers'])) {
+ throw new \InvalidArgumentException('on_headers must be callable');
+ }
+
+ if (!empty($options)) {
+ foreach ($options as $key => $value) {
+ $method = "add_{$key}";
+ if (isset($methods[$method])) {
+ $this->{$method}($request, $context, $value, $params);
+ }
+ }
+ }
+
+ if (isset($options['stream_context'])) {
+ if (!is_array($options['stream_context'])) {
+ throw new \InvalidArgumentException('stream_context must be an array');
+ }
+ $context = array_replace_recursive(
+ $context,
+ $options['stream_context']
+ );
+ }
+
+ $context = $this->createResource(
+ function () use ($context, $params) {
+ return stream_context_create($context, $params);
+ }
+ );
+
+ return $this->createResource(
+ function () use ($request, &$http_response_header, $context) {
+ $resource = fopen((string) $request->getUri()->withFragment(''), 'r', null, $context);
+ $this->lastHeaders = $http_response_header;
+ return $resource;
+ }
+ );
+ }
+
+ private function getDefaultContext(RequestInterface $request)
+ {
+ $headers = '';
+ foreach ($request->getHeaders() as $name => $value) {
+ foreach ($value as $val) {
+ $headers .= "$name: $val\r\n";
+ }
+ }
+
+ $context = [
+ 'http' => [
+ 'method' => $request->getMethod(),
+ 'header' => $headers,
+ 'protocol_version' => $request->getProtocolVersion(),
+ 'ignore_errors' => true,
+ 'follow_location' => 0,
+ ],
+ ];
+
+ $body = (string) $request->getBody();
+
+ if (!empty($body)) {
+ $context['http']['content'] = $body;
+ // Prevent the HTTP handler from adding a Content-Type header.
+ if (!$request->hasHeader('Content-Type')) {
+ $context['http']['header'] .= "Content-Type:\r\n";
+ }
+ }
+
+ $context['http']['header'] = rtrim($context['http']['header']);
+
+ return $context;
+ }
+
+ private function add_proxy(RequestInterface $request, &$options, $value, &$params)
+ {
+ if (!is_array($value)) {
+ $options['http']['proxy'] = $value;
+ } else {
+ $scheme = $request->getUri()->getScheme();
+ if (isset($value[$scheme])) {
+ if (!isset($value['no'])
+ || !\GuzzleHttp\is_host_in_noproxy(
+ $request->getUri()->getHost(),
+ $value['no']
+ )
+ ) {
+ $options['http']['proxy'] = $value[$scheme];
+ }
+ }
+ }
+ }
+
+ private function add_timeout(RequestInterface $request, &$options, $value, &$params)
+ {
+ if ($value > 0) {
+ $options['http']['timeout'] = $value;
+ }
+ }
+
+ private function add_verify(RequestInterface $request, &$options, $value, &$params)
+ {
+ if ($value === true) {
+ // PHP 5.6 or greater will find the system cert by default. When
+ // < 5.6, use the Guzzle bundled cacert.
+ if (PHP_VERSION_ID < 50600) {
+ $options['ssl']['cafile'] = \GuzzleHttp\default_ca_bundle();
+ }
+ } elseif (is_string($value)) {
+ $options['ssl']['cafile'] = $value;
+ if (!file_exists($value)) {
+ throw new \RuntimeException("SSL CA bundle not found: $value");
+ }
+ } elseif ($value === false) {
+ $options['ssl']['verify_peer'] = false;
+ $options['ssl']['verify_peer_name'] = false;
+ return;
+ } else {
+ throw new \InvalidArgumentException('Invalid verify request option');
+ }
+
+ $options['ssl']['verify_peer'] = true;
+ $options['ssl']['verify_peer_name'] = true;
+ $options['ssl']['allow_self_signed'] = false;
+ }
+
+ private function add_cert(RequestInterface $request, &$options, $value, &$params)
+ {
+ if (is_array($value)) {
+ $options['ssl']['passphrase'] = $value[1];
+ $value = $value[0];
+ }
+
+ if (!file_exists($value)) {
+ throw new \RuntimeException("SSL certificate not found: {$value}");
+ }
+
+ $options['ssl']['local_cert'] = $value;
+ }
+
+ private function add_progress(RequestInterface $request, &$options, $value, &$params)
+ {
+ $this->addNotification(
+ $params,
+ function ($code, $a, $b, $c, $transferred, $total) use ($value) {
+ if ($code == STREAM_NOTIFY_PROGRESS) {
+ $value($total, $transferred, null, null);
+ }
+ }
+ );
+ }
+
+ private function add_debug(RequestInterface $request, &$options, $value, &$params)
+ {
+ if ($value === false) {
+ return;
+ }
+
+ static $map = [
+ STREAM_NOTIFY_CONNECT => 'CONNECT',
+ STREAM_NOTIFY_AUTH_REQUIRED => 'AUTH_REQUIRED',
+ STREAM_NOTIFY_AUTH_RESULT => 'AUTH_RESULT',
+ STREAM_NOTIFY_MIME_TYPE_IS => 'MIME_TYPE_IS',
+ STREAM_NOTIFY_FILE_SIZE_IS => 'FILE_SIZE_IS',
+ STREAM_NOTIFY_REDIRECTED => 'REDIRECTED',
+ STREAM_NOTIFY_PROGRESS => 'PROGRESS',
+ STREAM_NOTIFY_FAILURE => 'FAILURE',
+ STREAM_NOTIFY_COMPLETED => 'COMPLETED',
+ STREAM_NOTIFY_RESOLVE => 'RESOLVE',
+ ];
+ static $args = ['severity', 'message', 'message_code',
+ 'bytes_transferred', 'bytes_max'];
+
+ $value = \GuzzleHttp\debug_resource($value);
+ $ident = $request->getMethod() . ' ' . $request->getUri()->withFragment('');
+ $this->addNotification(
+ $params,
+ function () use ($ident, $value, $map, $args) {
+ $passed = func_get_args();
+ $code = array_shift($passed);
+ fprintf($value, '<%s> [%s] ', $ident, $map[$code]);
+ foreach (array_filter($passed) as $i => $v) {
+ fwrite($value, $args[$i] . ': "' . $v . '" ');
+ }
+ fwrite($value, "\n");
+ }
+ );
+ }
+
+ private function addNotification(array &$params, callable $notify)
+ {
+ // Wrap the existing function if needed.
+ if (!isset($params['notification'])) {
+ $params['notification'] = $notify;
+ } else {
+ $params['notification'] = $this->callArray([
+ $params['notification'],
+ $notify
+ ]);
+ }
+ }
+
+ private function callArray(array $functions)
+ {
+ return function () use ($functions) {
+ $args = func_get_args();
+ foreach ($functions as $fn) {
+ call_user_func_array($fn, $args);
+ }
+ };
+ }
+}
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