Close inactive requests

This builds on top of #405 and further builds out #423 by also
close connections with inactive requests.

Author: WyriHaximus

src/HttpServer.php

@@ -5,8 +5,10 @@
 use Evenement\EventEmitter;
 use React\EventLoop\Loop;
 use React\EventLoop\LoopInterface;
+use React\Http\Io\Clock;
 use React\Http\Io\IniUtil;
 use React\Http\Io\MiddlewareRunner;
+use React\Http\Io\RequestHeaderParser;
 use React\Http\Io\StreamingServer;
 use React\Http\Middleware\InactiveConnectionTimeoutMiddleware;
 use React\Http\Middleware\LimitConcurrentRequestsMiddleware;
@@ -259,7 +261,8 @@ public function __construct($requestHandlerOrLoop)
             return !($handler instanceof StreamingRequestMiddleware) && !($handler instanceof InactiveConnectionTimeoutMiddleware);
         });
 
-        $this->streamingServer = new StreamingServer($loop, new MiddlewareRunner($middleware), $idleConnectTimeout);
+        $clock = new Clock($loop);
+        $this->streamingServer = new StreamingServer(new MiddlewareRunner($middleware), new RequestHeaderParser($loop, $clock, $idleConnectTimeout), $clock);
 
         $that = $this;
         $this->streamingServer->on('error', function ($error) use ($that) {

src/Io/RequestHeaderParser.php

@@ -4,6 +4,7 @@
 
 use Evenement\EventEmitter;
 use Psr\Http\Message\ServerRequestInterface;
+use React\EventLoop\LoopInterface;
 use React\Http\Message\Response;
 use React\Http\Message\ServerRequest;
 use React\Socket\ConnectionInterface;
@@ -24,23 +25,53 @@ class RequestHeaderParser extends EventEmitter
 {
     private $maxSize = 8192;
 
+    /**
+     * @var LoopInterface
+     */
+    private $loop;
+
     /** @var Clock */
     private $clock;
 
+    /**
+     * @var float
+     */
+    private $idleConnectionTimeout;
+
     /** @var array<string|int,array<string,string>> */
     private $connectionParams = array();
 
-    public function __construct(Clock $clock)
+    /**
+     * @param LoopInterface $loop
+     * @param float $idleConnectionTimeout
+     */
+    public function __construct(LoopInterface $loop, Clock $clock, $idleConnectionTimeout)
     {
+        $this->loop = $loop;
         $this->clock = $clock;
+        $this->idleConnectionTimeout = $idleConnectionTimeout;
     }
 
     public function handle(ConnectionInterface $conn)
     {
+        $loop = $this->loop;
+        $idleConnectionTimeout = $this->idleConnectionTimeout;
+        $that = $this;
+        $idleConnectionTimeoutHandler = function () use ($that, $conn) {
+            $that->emit('error', array(
+                new \RuntimeException('Request timed out', Response::STATUS_REQUEST_TIMEOUT),
+                $conn
+            ));
+            $conn->close();
+        };
+        $timer = $loop->addTimer($idleConnectionTimeout, $idleConnectionTimeoutHandler);
+        $conn->on('close', function () use ($loop, &$timer) {
+            $loop->cancelTimer($timer);
+        });
         $buffer = '';
         $maxSize = $this->maxSize;
-        $that = $this;
-        $conn->on('data', $fn = function ($data) use (&$buffer, &$fn, $conn, $maxSize, $that) {
+        $conn->on('data', $fn = function ($data) use (&$buffer, &$fn, $conn, $maxSize, $that, $loop, &$timer, $idleConnectionTimeout, $idleConnectionTimeoutHandler) {
+            $loop->cancelTimer($timer);
             // append chunk of data to buffer and look for end of request headers
             $buffer .= $data;
             $endOfHeader = \strpos($buffer, "\r\n\r\n");
@@ -59,6 +90,7 @@ public function handle(ConnectionInterface $conn)
 
             // ignore incomplete requests
             if ($endOfHeader === false) {
+                $timer = $loop->addTimer($idleConnectionTimeout, $idleConnectionTimeoutHandler);
                 return;
             }
 

src/Io/StreamingServer.php

@@ -5,10 +5,8 @@
 use Evenement\EventEmitter;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
-use React\EventLoop\LoopInterface;
 use React\Http\Message\Response;
 use React\Http\Message\ServerRequest;
-use React\Http\Middleware\InactiveConnectionTimeoutMiddleware;
 use React\Promise;
 use React\Promise\PromiseInterface;
 use React\Socket\ConnectionInterface;
@@ -29,7 +27,7 @@
  * object in return:
  *
  * ```php
- * $server = new StreamingServer($loop, function (ServerRequestInterface $request) {
+ * $server = new StreamingServer(function (ServerRequestInterface $request) {
  *     return new Response(
  *         Response::STATUS_OK,
  *         array(
@@ -54,7 +52,7 @@
  * in order to start a plaintext HTTP server like this:
  *
  * ```php
- * $server = new StreamingServer($loop, $handler);
+ * $server = new StreamingServer($handler);
  *
  * $socket = new React\Socket\SocketServer('0.0.0.0:8080', array(), $loop);
  * $server->listen($socket);
@@ -98,23 +96,19 @@ final class StreamingServer extends EventEmitter
      * connections in order to then parse incoming data as HTTP.
      * See also [listen()](#listen) for more details.
      *
-     * @param LoopInterface $loop
      * @param callable $requestHandler
      * @param float $idleConnectTimeout
      * @see self::listen()
      */
-    public function __construct(LoopInterface $loop, $requestHandler, $idleConnectTimeout = InactiveConnectionTimeoutMiddleware::DEFAULT_TIMEOUT)
+    public function __construct($requestHandler, RequestHeaderParser $parser, Clock $clock)
     {
         if (!\is_callable($requestHandler)) {
             throw new \InvalidArgumentException('Invalid request handler given');
         }
 
-        $this->loop = $loop;
-        $this->idleConnectionTimeout = $idleConnectTimeout;
-
         $this->callback = $requestHandler;
-        $this->clock = new Clock($loop);
-        $this->parser = new RequestHeaderParser($this->clock);
+        $this->clock = $clock;
+        $this->parser = $parser;
 
         $that = $this;
         $this->parser->on('headers', function (ServerRequestInterface $request, ConnectionInterface $conn) use ($that) {
@@ -141,27 +135,7 @@ public function __construct(LoopInterface $loop, $requestHandler, $idleConnectTi
      */
     public function listen(ServerInterface $socket)
     {
-        $socket->on('connection', array($this, 'handle'));
-    }
-
-    /** @internal */
-    public function handle(ConnectionInterface $conn)
-    {
-        $timer = $this->loop->addTimer($this->idleConnectionTimeout, function () use ($conn) {
-            $conn->close();
-        });
-        $loop = $this->loop;
-        $conn->once('data', function () use ($loop, $timer) {
-            $loop->cancelTimer($timer);
-        });
-        $conn->on('end', function () use ($loop, $timer) {
-            $loop->cancelTimer($timer);
-        });
-        $conn->on('close', function () use ($loop, $timer) {
-            $loop->cancelTimer($timer);
-        });
-
-        $this->parser->handle($conn);
+        $socket->on('connection', array($this->parser, 'handle'));
     }
 
     /** @internal */
@@ -379,7 +353,7 @@ public function handleResponse(ConnectionInterface $connection, ServerRequestInt
 
             // either wait for next request over persistent connection or end connection
             if ($persist) {
-                $this->handle($connection);
+                $this->parser->handle($connection);
             } else {
                 $connection->end();
             }
@@ -400,10 +374,10 @@ public function handleResponse(ConnectionInterface $connection, ServerRequestInt
         // write streaming body and then wait for next request over persistent connection
         if ($persist) {
             $body->pipe($connection, array('end' => false));
-            $that = $this;
-            $body->on('end', function () use ($connection, $that, $body) {
+            $parser = $this->parser;
+            $body->on('end', function () use ($connection, $parser, $body) {
                 $connection->removeListener('close', array($body, 'close'));
-                $that->handle($connection);
+                $parser->handle($connection);
             });
         } else {
             $body->pipe($connection);

src/Middleware/InactiveConnectionTimeoutMiddleware.php

@@ -28,6 +28,9 @@
  */
 final class InactiveConnectionTimeoutMiddleware
 {
+    /**
+     * @internal
+     */
     const DEFAULT_TIMEOUT = 60;
 
     /**
@@ -50,6 +53,7 @@ public function __invoke(ServerRequestInterface $request, $next)
 
     /**
      * @return float
+     * @internal
      */
     public function getTimeout()
     {

tests/HttpServerTest.php

@@ -62,10 +62,18 @@ public function testConstructWithoutLoopAssignsLoopAutomatically()
         $ref->setAccessible(true);
         $clock = $ref->getValue($streamingServer);
 
+        $ref = new \ReflectionProperty($streamingServer, 'parser');
+        $ref->setAccessible(true);
+        $parser = $ref->getValue($streamingServer);
+
         $ref = new \ReflectionProperty($clock, 'loop');
         $ref->setAccessible(true);
         $loop = $ref->getValue($clock);
 
+        $ref = new \ReflectionProperty($parser, 'loop');
+        $ref->setAccessible(true);
+        $loop = $ref->getValue($parser);
+
         $this->assertInstanceOf('React\EventLoop\LoopInterface', $loop);
     }
 
@@ -263,13 +271,12 @@ public function testIdleConnectionWillBeClosedAfterConfiguredTimeout()
     {
         $this->connection->expects($this->once())->method('close');
 
-        $loop = Factory::create();
-        $http = new HttpServer($loop, new InactiveConnectionTimeoutMiddleware(0.1), $this->expectCallableNever());
+        $http = new HttpServer(Loop::get(), new InactiveConnectionTimeoutMiddleware(0.1), $this->expectCallableNever());
 
         $http->listen($this->socket);
         $this->socket->emit('connection', array($this->connection));
 
-        $loop->run();
+        Loop::run();
     }
 
     public function testForwardErrors()