Chris@0: <?php
Chris@0: /**
Chris@12:  * @see       https://github.com/zendframework/zend-diactoros for the canonical source repository
Chris@12:  * @copyright Copyright (c) 2015-2017 Zend Technologies USA Inc. (http://www.zend.com)
Chris@0:  * @license   https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
Chris@0:  */
Chris@0: 
Chris@0: namespace Zend\Diactoros;
Chris@0: 
Chris@0: use Psr\Http\Message\RequestInterface;
Chris@0: use Psr\Http\Message\StreamInterface;
Chris@0: use Psr\Http\Message\UriInterface;
Chris@0: 
Chris@16: use function strtolower;
Chris@16: 
Chris@0: /**
Chris@0:  * HTTP Request encapsulation
Chris@0:  *
Chris@0:  * Requests are considered immutable; all methods that might change state are
Chris@0:  * implemented such that they retain the internal state of the current
Chris@0:  * message and return a new instance that contains the changed state.
Chris@0:  */
Chris@0: class Request implements RequestInterface
Chris@0: {
Chris@0:     use RequestTrait;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param null|string|UriInterface $uri URI for the request, if any.
Chris@0:      * @param null|string $method HTTP method for the request, if any.
Chris@0:      * @param string|resource|StreamInterface $body Message body, if any.
Chris@0:      * @param array $headers Headers for the message, if any.
Chris@0:      * @throws \InvalidArgumentException for any invalid value.
Chris@0:      */
Chris@0:     public function __construct($uri = null, $method = null, $body = 'php://temp', array $headers = [])
Chris@0:     {
Chris@0:         $this->initialize($uri, $method, $body, $headers);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getHeaders()
Chris@0:     {
Chris@0:         $headers = $this->headers;
Chris@0:         if (! $this->hasHeader('host')
Chris@0:             && $this->uri->getHost()
Chris@0:         ) {
Chris@0:             $headers['Host'] = [$this->getHostFromUri()];
Chris@0:         }
Chris@0: 
Chris@0:         return $headers;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getHeader($header)
Chris@0:     {
Chris@0:         if (! $this->hasHeader($header)) {
Chris@0:             if (strtolower($header) === 'host'
Chris@0:                 && $this->uri->getHost()
Chris@0:             ) {
Chris@0:                 return [$this->getHostFromUri()];
Chris@0:             }
Chris@0: 
Chris@0:             return [];
Chris@0:         }
Chris@0: 
Chris@0:         $header = $this->headerNames[strtolower($header)];
Chris@0: 
Chris@0:         return $this->headers[$header];
Chris@0:     }
Chris@0: }