/**
* Sends authenciation packet
* @param array Hash of properties (dbname, user, password, nonce)
* @param mixed Callback called when response received
* @param string Optional. Distribution key
* @return void
*/
public function auth($p, $callback, $key = '')
{
if (!isset($p['opts'])) {
$p['opts'] = 0;
}
$query = array('authenticate' => 1, 'user' => $p['user'], 'nonce' => $p['nonce'], 'key' => MongoClient::getAuthKey($p['user'], $p['password'], $p['nonce']));
$packet = pack('V', $p['opts']) . $p['dbname'] . '.$cmd' . "" . pack('VV', 0, -1) . bson_encode($query) . (isset($p['fields']) ? bson_encode($p['fields']) : '');
$reqId = $this->request($key, self::OP_QUERY, $packet, true);
$this->requests[$reqId] = array($p['dbname'], $callback, true);
}
