/**
* Send notification to devices tokens
*
* @throws InvalidArgumentException
* @param Payload $payload
* @param array $tokens
*/
public function send(Payload $payload, $tokens)
{
if (!count($tokens) > 0) {
return true;
}
//Open connection
$this->connect();
// Encode payload as JSON
$json_payload = json_encode($payload->getApsFormat());
// Build the binary notification to each token
$data = '';
foreach ($tokens as $tk) {
$data .= chr(0) . pack('n', 32) . pack('H*', str_replace(' ', '', $tk)) . pack('n', strlen($json_payload)) . $json_payload;
}
// Send data to the server
return $this->write($data);
}
