--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Queue/Stomp/Client/Connection.php Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,280 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Queue
+ * @subpackage Stomp
+ * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: Connection.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * @see Zend_Queue_Stomp_Client_ConnectionInterface
+ */
+require_once 'Zend/Queue/Stomp/Client/ConnectionInterface.php';
+
+/**
+ * The Stomp client interacts with a Stomp server.
+ *
+ * @category Zend
+ * @package Zend_Queue
+ * @subpackage Stomp
+ * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Queue_Stomp_Client_Connection
+ implements Zend_Queue_Stomp_Client_ConnectionInterface
+{
+ const READ_TIMEOUT_DEFAULT_USEC = 0; // 0 microseconds
+ const READ_TIMEOUT_DEFAULT_SEC = 5; // 5 seconds
+
+ /**
+ * Connection options
+ * @var array
+ */
+ protected $_options;
+
+ /**
+ * tcp/udp socket
+ *
+ * @var resource
+ */
+ protected $_socket = false;
+
+ /**
+ * open() opens a socket to the Stomp server
+ *
+ * @param array $options ('scheme', 'host', 'port')
+ * @param string $scheme
+ * @param string $host
+ * @param int $port
+ * @param array $options Accepts "timeout_sec" and "timeout_usec" keys
+ * @return true;
+ * @throws Zend_Queue_Exception
+ */
+ public function open($scheme, $host, $port, array $options = array())
+ {
+ $str = $scheme . '://' . $host;
+ $this->_socket = fsockopen($str, $port, $errno, $errstr);
+
+ if ($this->_socket === false) {
+ // aparently there is some reason that fsockopen will return false
+ // but it normally throws an error.
+ require_once 'Zend/Queue/Exception.php';
+ throw new Zend_Queue_Exception("Unable to connect to $str; error = $errstr ( errno = $errno )");
+ }
+
+ stream_set_blocking($this->_socket, 0); // non blocking
+
+ if (!isset($options['timeout_sec'])) {
+ $options['timeout_sec'] = self::READ_TIMEOUT_DEFAULT_SEC;
+ }
+ if (! isset($options['timeout_usec'])) {
+ $options['timeout_usec'] = self::READ_TIMEOUT_DEFAULT_USEC;
+ }
+
+ $this->_options = $options;
+
+ return true;
+ }
+
+ /**
+ * Close the socket explicitly when destructed
+ *
+ * @return void
+ */
+ public function __destruct()
+ {
+ }
+
+ /**
+ * Close connection
+ *
+ * @param boolean $destructor
+ * @return void
+ */
+ public function close($destructor = false)
+ {
+ // Gracefully disconnect
+ if (!$destructor) {
+ $frame = $this->createFrame();
+ $frame->setCommand('DISCONNECT');
+ $this->write($frame);
+ }
+
+ // @todo: Should be fixed.
+ // When the socket is "closed", it will trigger the below error when php exits
+ // Fatal error: Exception thrown without a stack frame in Unknown on line 0
+
+ // Danlo: I suspect this is because this has already been claimed by the interpeter
+ // thus trying to shutdown this resources, which is already shutdown is a problem.
+ if (is_resource($this->_socket)) {
+ // fclose($this->_socket);
+ }
+
+ // $this->_socket = null;
+ }
+
+ /**
+ * Check whether we are connected to the server
+ *
+ * @return true
+ * @throws Zend_Queue_Exception
+ */
+ public function ping()
+ {
+ if (!is_resource($this->_socket)) {
+ require_once 'Zend/Queue/Exception.php';
+ throw new Zend_Queue_Exception('Not connected to Stomp server');
+ }
+ return true;
+ }
+
+ /**
+ * Write a frame to the stomp server
+ *
+ * example: $response = $client->write($frame)->read();
+ *
+ * @param Zend_Queue_Stom_FrameInterface $frame
+ * @return $this
+ */
+ public function write(Zend_Queue_Stomp_FrameInterface $frame)
+ {
+ $this->ping();
+ $output = $frame->toFrame();
+
+ $bytes = fwrite($this->_socket, $output, strlen($output));
+ if ($bytes === false || $bytes == 0) {
+ require_once 'Zend/Queue/Exception.php';
+ throw new Zend_Queue_Exception('No bytes written');
+ }
+
+ return $this;
+ }
+
+ /**
+ * Tests the socket to see if there is data for us
+ *
+ * @return boolean
+ */
+ public function canRead()
+ {
+ $read = array($this->_socket);
+ $write = null;
+ $except = null;
+
+ return stream_select(
+ $read,
+ $write,
+ $except,
+ $this->_options['timeout_sec'],
+ $this->_options['timeout_usec']
+ ) == 1;
+ // see http://us.php.net/manual/en/function.stream-select.php
+ }
+
+ /**
+ * Reads in a frame from the socket or returns false.
+ *
+ * @return Zend_Queue_Stomp_FrameInterface|false
+ * @throws Zend_Queue_Exception
+ */
+ public function read()
+ {
+ $this->ping();
+
+ $response = '';
+ $prev = '';
+
+ // while not end of file.
+ while (!feof($this->_socket)) {
+ // read in one character until "\0\n" is found
+ $data = fread($this->_socket, 1);
+
+ // check to make sure that the connection is not lost.
+ if ($data === false) {
+ require_once 'Zend/Queue/Exception.php';
+ throw new Zend_Queue_Exception('Connection lost');
+ }
+
+ // append last character read to $response
+ $response .= $data;
+
+ // is this \0 (prev) \n (data)? END_OF_FRAME
+ if (ord($data) == 10 && ord($prev) == 0) {
+ break;
+ }
+ $prev = $data;
+ }
+
+ if ($response === '') {
+ return false;
+ }
+
+ $frame = $this->createFrame();
+ $frame->fromFrame($response);
+ return $frame;
+ }
+
+ /**
+ * Set the frameClass to be used
+ *
+ * This must be a Zend_Queue_Stomp_FrameInterface.
+ *
+ * @param string $classname - class is an instance of Zend_Queue_Stomp_FrameInterface
+ * @return $this;
+ */
+ public function setFrameClass($classname)
+ {
+ $this->_options['frameClass'] = $classname;
+ return $this;
+ }
+
+ /**
+ * Get the frameClass
+ *
+ * @return string
+ */
+ public function getFrameClass()
+ {
+ return isset($this->_options['frameClass'])
+ ? $this->_options['frameClass']
+ : 'Zend_Queue_Stomp_Frame';
+ }
+
+ /**
+ * Create an empty frame
+ *
+ * @return Zend_Queue_Stomp_FrameInterface
+ */
+ public function createFrame()
+ {
+ $class = $this->getFrameClass();
+
+ if (!class_exists($class)) {
+ require_once 'Zend/Loader.php';
+ Zend_Loader::loadClass($class);
+ }
+
+ $frame = new $class();
+
+ if (!$frame instanceof Zend_Queue_Stomp_FrameInterface) {
+ require_once 'Zend/Queue/Exception.php';
+ throw new Zend_Queue_Exception('Invalid Frame class provided; must implement Zend_Queue_Stomp_FrameInterface');
+ }
+
+ return $frame;
+ }
+}