First Local Commit - After Clean up.

Signed-off-by: Rick Hays <rhays@haysgang.com>

system/HTTP/RequestInterface.php

@@ -0,0 +1,94 @@
+<?php
+
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 British Columbia Institute of Technology
+ * Copyright (c) 2019 CodeIgniter Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ */
+
+namespace CodeIgniter\HTTP;
+
+/**
+ * Expected behavior of an HTTP request
+ *
+ * @mixin \CodeIgniter\HTTP\IncomingRequest
+ * @mixin \CodeIgniter\HTTP\CLIRequest
+ * @mixin \CodeIgniter\HTTP\CURLRequest
+ */
+interface RequestInterface
+{
+
+	/**
+	 * Gets the user's IP address.
+	 *
+	 * @return string IP address
+	 */
+	public function getIPAddress(): string;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Validate an IP address
+	 *
+	 * @param string $ip    IP Address
+	 * @param string $which IP protocol: 'ipv4' or 'ipv6'
+	 *
+	 * @return boolean
+	 */
+	public function isValidIP(string $ip, string $which = null): bool;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Get the request method.
+	 *
+	 * @param boolean $upper Whether to return in upper or lower case.
+	 *
+	 * @return string
+	 */
+	public function getMethod(bool $upper = false): string;
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Fetch an item from the $_SERVER array.
+	 *
+	 * @param  string $index  Index for item to be fetched from $_SERVER
+	 * @param  null   $filter A filter name to be applied
+	 * @return mixed
+	 */
+	public function getServer($index = null, $filter = null);
+
+	//--------------------------------------------------------------------
+}