SimpleSAML_Configuration::getDefaultEndpoint PHP Method

    public function getDefaultEndpoint($endpointType, array $bindings = null, $default = self::REQUIRED_OPTION)
    {
        assert('is_string($endpointType)');
        $endpoints = $this->getEndpoints($endpointType);
        $defaultEndpoint = \SimpleSAML\Utils\Config\Metadata::getDefaultEndpoint($endpoints, $bindings);
        if ($defaultEndpoint !== null) {
            return $defaultEndpoint;
        }
        if ($default === self::REQUIRED_OPTION) {
            $loc = $this->location . '[' . var_export($endpointType, true) . ']:';
            throw new Exception($loc . 'Could not find a supported ' . $endpointType . ' endpoint.');
        }
        return $default;
    }

 /**
  * This function receives a SAML 1.1 artifact.
  *
  * @param SimpleSAML_Configuration $spMetadata  The metadata of the SP.
  * @param SimpleSAML_Configuration $idpMetadata  The metadata of the IdP.
  * @return string  The <saml1p:Response> element, as an XML string.
  */
 public static function receive(SimpleSAML_Configuration $spMetadata, SimpleSAML_Configuration $idpMetadata)
 {
     $artifacts = self::getArtifacts();
     $request = self::buildRequest($artifacts);
     \SimpleSAML\Utils\XML::debugSAMLMessage($request, 'out');
     $url = $idpMetadata->getDefaultEndpoint('ArtifactResolutionService', array('urn:oasis:names:tc:SAML:1.0:bindings:SOAP-binding'));
     $url = $url['Location'];
     $peerPublicKeys = $idpMetadata->getPublicKeys('signing', TRUE);
     $certData = '';
     foreach ($peerPublicKeys as $key) {
         if ($key['type'] !== 'X509Certificate') {
             continue;
         }
         $certData .= "-----BEGIN CERTIFICATE-----\n" . chunk_split($key['X509Certificate'], 64) . "-----END CERTIFICATE-----\n";
     }
     $file = SimpleSAML\Utils\System::getTempDir() . DIRECTORY_SEPARATOR . sha1($certData) . '.crt';
     if (!file_exists($file)) {
         SimpleSAML\Utils\System::writeFile($file, $certData);
     }
     $spKeyCertFile = \SimpleSAML\Utils\Config::getCertPath($spMetadata->getString('privatekey'));
     $opts = array('ssl' => array('verify_peer' => TRUE, 'cafile' => $file, 'local_cert' => $spKeyCertFile, 'capture_peer_cert' => TRUE, 'capture_peer_chain' => TRUE), 'http' => array('method' => 'POST', 'content' => $request, 'header' => 'SOAPAction: http://www.oasis-open.org/committees/security' . "\r\n" . 'Content-Type: text/xml'));
     // Fetch the artifact
     $response = \SimpleSAML\Utils\HTTP::fetch($url, $opts);
     if ($response === FALSE) {
         throw new SimpleSAML_Error_Exception('Failed to retrieve assertion from IdP.');
     }
     \SimpleSAML\Utils\XML::debugSAMLMessage($response, 'in');
     // Find the response in the SOAP message
     $response = self::extractResponse($response);
     return $response;
 }