<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Http;
use Zend\Stdlib\Message;
/**
* HTTP standard message (Request/Response)
*
* @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4
*/
abstract class AbstractMessage extends Message
{
/**#@+
* @const string Version constant numbers
*/
const VERSION_10 = '1.0';
const VERSION_11 = '1.1';
/**#@-*/
/**
* @var string
*/
protected $version = self::VERSION_11;
/**
* @var Headers|null
*/
protected $headers = null;
/**
* Set the HTTP version for this object, one of 1.0 or 1.1
* (AbstractMessage::VERSION_10, AbstractMessage::VERSION_11)
*
* @param string $version (Must be 1.0 or 1.1)
* @return AbstractMessage
* @throws Exception\InvalidArgumentException
*/
public function setVersion($version)
{
if ($version != self::VERSION_10 && $version != self::VERSION_11) {
throw new Exception\InvalidArgumentException(
'Not valid or not supported HTTP version: ' . $version
);
}
$this->version = $version;
return $this;
}
/**
* Return the HTTP version for this request
*
* @return string
*/
public function getVersion()
{
return $this->version;
}
/**
* Provide an alternate Parameter Container implementation for headers in this object,
* (this is NOT the primary API for value setting, for that see getHeaders())
*
* @see getHeaders()
* @param Headers $headers
* @return AbstractMessage
*/
public function setHeaders(Headers $headers)
{
$this->headers = $headers;
return $this;
}
/**
* Return the header container responsible for headers
*
* @return Headers
*/
public function getHeaders()
{
if ($this->headers === null || is_string($this->headers)) {
// this is only here for fromString lazy loading
$this->headers = (is_string($this->headers)) ? Headers::fromString($this->headers) : new Headers();
}
return $this->headers;
}
/**
* Allow PHP casting of this object
*
* @return string
*/
public function __toString()
{
return $this->toString();
}
}