--- /dev/null
+<?php
+// Own namespace
+namespace CoreFramework\Registry\Socket;
+
+// Import framework stuff
+use CoreFramework\Registry\Registerable;
+
+/**
+ * A class for registerable socket classes
+ *
+ * @author Roland Haeder <webmaster@shipsimu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core 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/>.
+ */
+interface RegisterableSocket extends Registerable {
+ /**
+ * Checks whether given socket resource is registered. If $socketResource is
+ * FALSE only the instance will be checked.
+ *
+ * @param $infoInstance An instance of a ShareableInfo class
+ * @param $socketResource A valid socket resource
+ * @return $isRegistered Whether the given socket resource is registered
+ */
+ function isSocketRegistered (ShareableInfo $infoInstance, $socketResource);
+
+ /**
+ * Registeres given socket for listener or throws an exception if it is already registered
+ *
+ * @param $infoInstance An instance of a ShareableInfo class
+ * @param $socketResource A valid socket resource
+ * @return void
+ * @throws SocketAlreadyRegisteredException If the given socket is already registered
+ */
+ function registerSocket (ShareableInfo $infoInstance, $socketResource);
+
+ /**
+ * Getter for given listener's socket resource
+ *
+ * @param $listenerInstance An instance of a Listenable class
+ * @return $socketResource A valid socket resource
+ * @throws NoSocketRegisteredException If the requested socket is not registered
+ */
+ function getRegisteredSocketResource (Listenable $listenerInstance);
+
+ /**
+ * "Getter" for info instance from given package data
+ *
+ * @param $packageData Raw package data
+ * @return $infoInstance An instance of a ShareableInfo class
+ */
+ function getInfoInstanceFromPackageData (array $packageData);
+
+}