src/Websocket.php
final public function multicastBinary(string $data, array $clientIds): Promise
    {
        return $this->multicastData($data, true, $clientIds);
    }
final public function multicastBinary(string $data, array $clientIds): Promise
    {
        return $this->multicastData($data, true, $clientIds);
    }
final public function multicastBinary ( string $ data , array $ clientIds ) : Promise { return $ this -> multicastData ( $ data , true , $ clientIds ) ; }
Send a binary message to a set of clients.

@param string   $data Data to send.
@param string[] $clientIds Array of client IDs.

@return \Amp\Promise<int>
Send a binary message to a set of clients .