1 files changed, 161 insertions, 0 deletions
diff --git a/vendor/clue/buzz-react/src/Io/Sender.php b/vendor/clue/buzz-react/src/Io/Sender.php
new file mode 100644
index 0000000..06c1212
--- /dev/null
+++ b/vendor/clue/buzz-react/src/Io/Sender.php
@@ -0,0 +1,161 @@
+<?php
+
+namespace Clue\React\Buzz\Io;
+
+use Clue\React\Buzz\Message\MessageFactory;
+use Psr\Http\Message\RequestInterface;
+use React\EventLoop\LoopInterface;
+use React\HttpClient\Client as HttpClient;
+use React\HttpClient\Response as ResponseStream;
+use React\Promise\PromiseInterface;
+use React\Promise\Deferred;
+use React\Socket\ConnectorInterface;
+use React\Stream\ReadableStreamInterface;
+
+/**
+ * [Internal] Sends requests and receives responses
+ *
+ * The `Sender` is responsible for passing the [`RequestInterface`](#requestinterface) objects to
+ * the underlying [`HttpClient`](https://github.com/reactphp/http-client) library
+ * and keeps track of its transmission and converts its reponses back to [`ResponseInterface`](#responseinterface) objects.
+ *
+ * It also registers everything with the main [`EventLoop`](https://github.com/reactphp/event-loop#usage)
+ * and the default [`Connector`](https://github.com/reactphp/socket-client) and [DNS `Resolver`](https://github.com/reactphp/dns).
+ *
+ * The `Sender` class mostly exists in order to abstract changes on the underlying
+ * components away from this package in order to provide backwards and forwards
+ * compatibility.
+ *
+ * @internal You SHOULD NOT rely on this API, it is subject to change without prior notice!
+ * @see Browser
+ */
+class Sender
+{
+    /**
+     * create a new default sender attached to the given event loop
+     *
+     * This method is used internally to create the "default sender".
+     *
+     * You may also use this method if you need custom DNS or connector
+     * settings. You can use this method manually like this:
+     *
+     * ```php
+     * $connector = new \React\Socket\Connector($loop);
+     * $sender = \Clue\React\Buzz\Io\Sender::createFromLoop($loop, $connector);
+     * ```
+     *
+     * @param LoopInterface $loop
+     * @param ConnectorInterface|null $connector
+     * @return self
+     */
+    public static function createFromLoop(LoopInterface $loop, ConnectorInterface $connector = null, MessageFactory $messageFactory)
+    {
+        return new self(new HttpClient($loop, $connector), $messageFactory);
+    }
+
+    private $http;
+    private $messageFactory;
+
+    /**
+     * [internal] Instantiate Sender
+     *
+     * @param HttpClient $http
+     * @internal
+     */
+    public function __construct(HttpClient $http, MessageFactory $messageFactory)
+    {
+        $this->http = $http;
+        $this->messageFactory = $messageFactory;
+    }
+
+    /**
+     *
+     * @internal
+     * @param RequestInterface $request
+     * @return PromiseInterface Promise<ResponseInterface, Exception>
+     */
+    public function send(RequestInterface $request)
+    {
+        $body = $request->getBody();
+        $size = $body->getSize();
+
+        if ($size !== null && $size !== 0) {
+            // automatically assign a "Content-Length" request header if the body size is known and non-empty
+            $request = $request->withHeader('Content-Length', (string)$size);
+        } elseif ($size === 0 && \in_array($request->getMethod(), array('POST', 'PUT', 'PATCH'))) {
+            // only assign a "Content-Length: 0" request header if the body is expected for certain methods
+            $request = $request->withHeader('Content-Length', '0');
+        } elseif ($body instanceof ReadableStreamInterface && $body->isReadable() && !$request->hasHeader('Content-Length')) {
+            // use "Transfer-Encoding: chunked" when this is a streaming body and body size is unknown
+            $request = $request->withHeader('Transfer-Encoding', 'chunked');
+        } else {
+            // do not use chunked encoding if size is known or if this is an empty request body
+            $size = 0;
+        }
+
+        $headers = array();
+        foreach ($request->getHeaders() as $name => $values) {
+            $headers[$name] = implode(', ', $values);
+        }
+
+        $requestStream = $this->http->request($request->getMethod(), (string)$request->getUri(), $headers, $request->getProtocolVersion());
+
+        $deferred = new Deferred(function ($_, $reject) use ($requestStream) {
+            // close request stream if request is cancelled
+            $reject(new \RuntimeException('Request cancelled'));
+            $requestStream->close();
+        });
+
+        $requestStream->on('error', function($error) use ($deferred) {
+            $deferred->reject($error);
+        });
+
+        $messageFactory = $this->messageFactory;
+        $requestStream->on('response', function (ResponseStream $responseStream) use ($deferred, $messageFactory, $request) {
+            // apply response header values from response stream
+            $deferred->resolve($messageFactory->response(
+                $responseStream->getVersion(),
+                $responseStream->getCode(),
+                $responseStream->getReasonPhrase(),
+                $responseStream->getHeaders(),
+                $responseStream,
+                $request->getMethod()
+            ));
+        });
+
+        if ($body instanceof ReadableStreamInterface) {
+            if ($body->isReadable()) {
+                // length unknown => apply chunked transfer-encoding
+                if ($size === null) {
+                    $body = new ChunkedEncoder($body);
+                }
+
+                // pipe body into request stream
+                // add dummy write to immediately start request even if body does not emit any data yet
+                $body->pipe($requestStream);
+                $requestStream->write('');
+
+                $body->on('close', $close = function () use ($deferred, $requestStream) {
+                    $deferred->reject(new \RuntimeException('Request failed because request body closed unexpectedly'));
+                    $requestStream->close();
+                });
+                $body->on('error', function ($e) use ($deferred, $requestStream, $close, $body) {
+                    $body->removeListener('close', $close);
+                    $deferred->reject(new \RuntimeException('Request failed because request body reported an error', 0, $e));
+                    $requestStream->close();
+                });
+                $body->on('end', function () use ($close, $body) {
+                    $body->removeListener('close', $close);
+                });
+            } else {
+                // stream is not readable => end request without body
+                $requestStream->end();
+            }
+        } else {
+            // body is fully buffered => write as one chunk
+            $requestStream->end((string)$body);
+        }
+
+        return $deferred->promise();
+    }
+}