/**
* check that the nonce is not repeated
*/
private function _checkNonce(Consumer $consumer, $nonce, $timestamp)
{
if (!$nonce) {
throw new Exception('Missing nonce parameter. The parameter is required.', 400);
}
// verify that the nonce is uniqueish
$found = $this->_dataStore->lookupNonce($consumer, $nonce, $timestamp);
if ($found) {
throw new Exception("Nonce already used: {$nonce}", 400);
}
}
