X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=application%2Fhub%2Fclasses%2Fdiscovery%2Fprotocol%2Fclass_ProtocolDiscovery.php;fp=application%2Fhub%2Fclasses%2Fdiscovery%2Fprotocol%2Fclass_ProtocolDiscovery.php;h=82ac8c693256feefb5f09ec665bc420dfe8155f1;hb=f3400989268a1994de44909e5d968cabf72de5b1;hp=0000000000000000000000000000000000000000;hpb=73aff29b9bc78031853b0b8c0fe0a8e04f66ac29;p=hub.git

diff --git a/application/hub/classes/discovery/protocol/class_ProtocolDiscovery.php b/application/hub/classes/discovery/protocol/class_ProtocolDiscovery.php
new file mode 100644
index 000000000..82ac8c693
--- /dev/null
+++ b/application/hub/classes/discovery/protocol/class_ProtocolDiscovery.php
@@ -0,0 +1,100 @@
+<?php
+/**
+ * A Protocol discovery class
+ *
+ * @author		Roland Haeder <webmaster@shipsimu.org>
+ * @version		0.0.0
+ * @copyright	Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Hub Developer Team
+ * @license		GNU GPL 3.0 or any newer version
+ * @link		http://www.shipsimu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class ProtocolDiscovery extends BaseNodeDiscovery implements DiscoverableProtocol, Registerable {
+	/**
+	 * Protected constructor
+	 *
+	 * @return	void
+	 */
+	protected function __construct () {
+		// Call parent constructor
+		parent::__construct(__CLASS__);
+	}
+
+	/**
+	 * Create an instance of this class
+	 *
+	 * @return	$discoveryInstance	An instance of this discovery class
+	 */
+	public static final function createProtocolDiscovery () {
+		// Get an instance of this class
+		$discoveryInstance = new ProtocolDiscovery();
+
+		// Return the prepared instance
+		return $discoveryInstance;
+	}
+
+	/**
+	 * Determines the protoctol name
+	 *
+	 * @param	$packageData		Valid package data
+	 * @return	$protocolInstance	An instance of a HandleableProtocol class
+	 */
+	public static final function determineProtocolByPackageData (array $packageData) {
+		// First we need a tags instance
+		$tagsInstance = PackageTagsFactory::createPackageTagsInstance();
+
+		/*
+		 * We need to decide here which socket (TCP or UDP) should be used for
+		 * the actual data transmission. In this process we will find out if
+		 * the recipient of this package has already a known (registered) socket
+		 * and if so we can re-use it. If there is no socket registered, we try
+		 * to make a new connection to the given Universal Node Locator.
+		 */
+		$protocolInstance = $tagsInstance->chooseProtocolFromPackageData($packageData);
+
+		// Return it
+		return $protocolInstance;
+	}
+
+	/**
+	 * "Discovers" the protocol type from given raw package data. This is done
+	 * by looking at the 'recipient' field and extract the first part from it.
+	 *
+	 * @param	$packageData	Raw package data
+	 * @return	$protocolType	Type of protocol, e.g. 'tcp' for TCP/IPv4 connections
+	 */
+	public static final function discoverProtocolByPackageData (array $packageData) {
+		//* DEBUG: */ die(__METHOD__ . ':packageData=' . print_r($packageData, TRUE));
+
+		/*
+		 * "Explode" the 'recipient' array element into a new one, giving at
+		 * least two entries: protocol://address
+		 */
+		$recipient = explode(':', $packageData[NetworkPackage::PACKAGE_DATA_RECIPIENT]);
+
+		// At least 2 entries must be found
+		assert(count($recipient) >= 2);
+
+		// Now get the first part (protocol type) and make all lower-case
+		$protocolType = strtolower($recipient[0]);
+
+		// Return it
+		// @TODO Add some validation here???
+		return $protocolType;
+	}
+}
+
+// [EOF]
+?>