--- /dev/null
+<?php
+
+/**
+ * Licensed to Jasig under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ *
+ * Jasig licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * PHP Version 5
+ *
+ * @file CAS/Request/MultiRequestInterface.php
+ * @category Authentication
+ * @package PhpCAS
+ * @author Adam Franco <afranco@middlebury.edu>
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
+ * @link https://wiki.jasig.org/display/CASC/phpCAS
+ */
+
+/**
+ * This interface defines a class library for performing multiple web requests
+ * in batches. Implementations of this interface may perform requests serially
+ * or in parallel.
+ *
+ * @class CAS_Request_MultiRequestInterface
+ * @category Authentication
+ * @package PhpCAS
+ * @author Adam Franco <afranco@middlebury.edu>
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
+ * @link https://wiki.jasig.org/display/CASC/phpCAS
+ */
+interface CAS_Request_MultiRequestInterface
+{
+
+ /*********************************************************
+ * Add Requests
+ *********************************************************/
+
+ /**
+ * Add a new Request to this batch.
+ * Note, implementations will likely restrict requests to their own concrete
+ * class hierarchy.
+ *
+ * @param CAS_Request_RequestInterface $request request interface
+ *
+ * @return void
+ * @throws CAS_OutOfSequenceException If called after the Request has been
+ * sent.
+ * @throws CAS_InvalidArgumentException If passed a Request of the wrong
+ * implmentation.
+ */
+ public function addRequest (CAS_Request_RequestInterface $request);
+
+ /**
+ * Retrieve the number of requests added to this batch.
+ *
+ * @return number of request elements
+ */
+ public function getNumRequests ();
+
+ /*********************************************************
+ * 2. Send the Request
+ *********************************************************/
+
+ /**
+ * Perform the request. After sending, all requests will have their
+ * responses poulated.
+ *
+ * @return bool TRUE on success, FALSE on failure.
+ * @throws CAS_OutOfSequenceException If called multiple times.
+ */
+ public function send ();
+}