HTTPMessage.php

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<?php

namespace ceLTIc\LTI;

use ceLTIc\LTI\Http;
use ceLTIc\LTI\Http\ClientInterface;

class HTTPMessage
{

    public $ok = false;

    public $request = null;

    public $requestHeaders = '';

    public $response = null;

    public $responseHeaders = '';

    public $status = 0;

    public $error = '';

    private $url = null;

    private $method = null;

    private static $httpClient;

    function __construct($url, $method = 'GET', $params = null, $header = null)
    {
        $this->url = $url;
        $this->method = strtoupper($method);
        if (is_array($params)) {
            $this->request = http_build_query($params);
        } else {
            $this->request = $params;
        }
        if (!empty($header)) {
            $this->requestHeaders = explode("\n", $header);
        }
    }

    public function getUrl()
    {
        return $this->url;
    }

    public function getMethod()
    {
        return $this->method;
    }

    public static function setHttpClient($httpClient = null)
    {
        self::$httpClient = $httpClient;
    }

    public static function getHttpClient()
    {
        if (!self::$httpClient) {
            if (function_exists('curl_init')) {
                self::$httpClient = new Http\CurlClient();
            } elseif (ini_get('allow_url_fopen')) {
                self::$httpClient = new Http\StreamClient();
            }
        }

        return self::$httpClient;
    }

    public function send()
    {
        $client = self::getHttpClient();
        $this->ok = !empty($client);
        if ($this->ok) {
            $this->ok = $client->send($this);
        } else {
            $this->error = 'No HTTP client interface is available';
        }

        return $this->ok;
    }

}