src/Socket/VirtualUdpConnection.php
public function send($data): bool
    {
        $dataLength = strlen($data);
        if ($dataLength === 0) {
            throw new \RuntimeException('Can not send an empty package.');
        }
        if ($this->isIpAddress()) {
            $address = $this->peerAddress->getIp();
            $port = $this->peerAddress->getPort();
        } else {
            $address = $this->peerAddress->getSockPath();
            $port = 0;
        }
        $wrote = socket_sendto($this->connectionResource->getResource(), $data, strlen($data), 0, $address, $port);
        if ($wrote === false || $wrote === 0) {
//            throw new SendException('I don\'t send :(');
            return false;
        } elseif ($wrote < $dataLength) {
            throw new SendException('Could not send the whole package.');
        }
        return true;
    }
public function send($data): bool
    {
        $dataLength = strlen($data);
        if ($dataLength === 0) {
            throw new \RuntimeException('Can not send an empty package.');
        }
        if ($this->isIpAddress()) {
            $address = $this->peerAddress->getIp();
            $port = $this->peerAddress->getPort();
        } else {
            $address = $this->peerAddress->getSockPath();
            $port = 0;
        }
        $wrote = socket_sendto($this->connectionResource->getResource(), $data, strlen($data), 0, $address, $port);
        if ($wrote === false || $wrote === 0) {
//            throw new SendException('I don\'t send :(');
            return false;
        } elseif ($wrote < $dataLength) {
            throw new SendException('Could not send the whole package.');
        }
        return true;
    }
@param $data

@return bool
@throws SendException