<?php

interface CAS_Request_RequestInterface
{
	/**
	 * Set the URL of the Request
	 *
	 * @param string $url url to set
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function setUrl($url);


	/**
	 * Add a cookie to the request.
	 *
	 * @param string $name  name of cookie
	 * @param string $value value of cookie
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function addCookie($name, $value);


	/**
	 * Add an array of cookies to the request.
	 * The cookie array is of the form
	 *     array('cookie_name' => 'cookie_value', 'cookie_name2' => cookie_value2')
	 *
	 * @param array $cookies cookies to add
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function addCookies(array $cookies);


	/**
	 * Add a header string to the request.
	 *
	 * @param string $header header to add
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function addHeader($header);


	/**
	 * Add an array of header strings to the request.
	 *
	 * @param array $headers headers to add
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function addHeaders(array $headers);


	/**
	 * Make the request a POST request rather than the default GET request.
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function makePost();


	/**
	 * Add a POST body to the request
	 *
	 * @param string $body body to add
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function setPostBody($body);


	/**
	 * Specify the path to an SSL CA certificate to validate the server with.
	 *
	 * @param string  $caCertPath  path to cert file
	 * @param boolean $validate_cn validate CN of SSL certificate
	 *
	 * @return void
	 * @throws CAS_OutOfSequenceException If called after the Request has been sent.
	 */
	public function setSslCaCert($caCertPath, $validate_cn = true);


	/**
	 * Perform the request.
	 *
	 * @return bool TRUE on success, FALSE on failure.
	 * @throws CAS_OutOfSequenceException If called multiple times.
	 */
	public function send();


	/**
	 * Answer the headers of the response.
	 *
	 * @return array An array of header strings.
	 * @throws CAS_OutOfSequenceException If called before the Request has been sent.
	 */
	public function getResponseHeaders();


	/**
	 * Answer HTTP status code of the response
	 *
	 * @return int
	 * @throws CAS_OutOfSequenceException If called before the Request has been sent.
	 */
	public function getResponseStatusCode();


	/**
	 * Answer the body of response.
	 *
	 * @return string
	 * @throws CAS_OutOfSequenceException If called before the Request has been sent.
	 */
	public function getResponseBody();


	/**
	 * Answer a message describing any errors if the request failed.
	 *
	 * @return string
	 * @throws CAS_OutOfSequenceException If called before the Request has been sent.
	 */
	public function getErrorMessage();
}
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