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<?php
namespace Laminas\Http;
use Laminas\Stdlib\Message;
use function in_array;
use function is_string;
/**
* 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
*/
public const VERSION_10 = '1.0';
public const VERSION_11 = '1.1';
public const VERSION_2 = '2';
/**#@-*/
/** @var string */
protected $version = self::VERSION_11;
/** @var Headers|null */
protected $headers;
/**
* Set the HTTP version for this object, one of 1.0, 1.1 or 2
* (AbstractMessage::VERSION_10, AbstractMessage::VERSION_11, AbstractMessage::VERSION_2)
*
* @param string $version (Must be 1.0, 1.1 or 2)
* @return $this
* @throws Exception\InvalidArgumentException
*/
public function setVersion($version)
{
if (! in_array($version, [self::VERSION_10, self::VERSION_11, self::VERSION_2])) {
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()
*
* @return $this
*/
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();
}
}