]> git.mxchange.org Git - hub.git/blob - application/hub/main/handler/network/tcp/class_TcpNetworkPackageHandler.php
Introduced getListIterator() to all lists implementing Listable
[hub.git] / application / hub / main / handler / network / tcp / class_TcpNetworkPackageHandler.php
1 <?php
2 /**
3  * A TCP network package handler
4  *
5  * @author              Roland Haeder <webmaster@ship-simu.org>
6  * @version             0.0.0
7  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2011 Hub Developer Team
8  * @license             GNU GPL 3.0 or any newer version
9  * @link                http://www.ship-simu.org
10  *
11  * This program is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation, either version 3 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
23  */
24 class TcpNetworkPackageHandler extends BaseNetworkPackageHandler implements Networkable {
25         /**
26          * Protected constructor
27          *
28          * @return      void
29          */
30         protected function __construct () {
31                 // Call parent constructor
32                 parent::__construct(__CLASS__);
33
34                 // Set handler name
35                 $this->setHandlerName('tcp');
36         }
37
38         /**
39          * Creates an instance of this class
40          *
41          * @return      $handlerInstance        An instance of a Networkable class
42          */
43         public static final function createTcpNetworkPackageHandler () {
44                 // Get new instance
45                 $handlerInstance = new TcpNetworkPackageHandler();
46
47                 // Return the prepared instance
48                 return $handlerInstance;
49         }
50
51         /**
52          * Processes raw data from given resource. This is mostly useful for TCP
53          * package handling and is implemented in the TcpListener class
54          *
55          * @param       $resource       A valid resource identifier
56          * @return      void
57          */
58         public function processResourceRawData ($resource) {
59                 // Check the resource
60                 if (!is_resource($resource)) {
61                         // Throw an exception
62                         throw new InvalidResourceException($this, self::EXCEPTION_INVALID_RESOURCE);
63                 } // END - if
64
65                 // Reset error code to unhandled
66                 $this->setErrorCode(self::SOCKET_ERROR_UNHANDLED);
67
68                 // Init variables
69                 $decodedData = false;
70
71                 // Debug message
72                 //* NOISY-DEBUG: */ $this->debugOutput('HANDLER: Handling TCP package from peer ' . $resource);
73
74                 /*
75                  * Read the raw data from socket. If you change PHP_BINARY_READ to
76                  * PHP_NORMAL_READ, this line will endless block. We only have
77                  * simultanous threads and no real threads.
78                  */
79                 $rawData = socket_read($resource, $this->getConfigInstance()->getConfigEntry('tcp_buffer_length'), PHP_BINARY_READ);
80
81                 // Debug output of read data length
82                 //* NOISY-DEBUG: */ $this->debugOutput('LISTENER: rawData[]=' . strlen($rawData));
83
84                 // Is it valid?
85                 if (($rawData === false) || (socket_last_error($resource) > 0)) {
86                         // Network error or connection lost
87                         $this->setErrorCode(socket_last_error($resource));
88                 } elseif (empty($rawData)) {
89                         // The peer did send nothing to us
90                         $this->setErrorCode(self::SOCKET_ERROR_EMPTY_DATA);
91                 } else {
92                         /*
93                          * Low-level checks of the raw data went all fine, we can now
94                          * decode the raw data. This may still fail because of invalid
95                          * encoded data.
96                          */
97                         $decodedData = $this->getInputStreamInstance()->streamData($rawData);
98                 }
99
100                 // Add the (maybe above decoded) data and error code to the stacker
101                 $this->addRawDataToStacker($decodedData);
102         }
103 }
104
105 // [EOF]
106 ?>