Deployer\Server\Remote\NativeSsh::upload PHP Method

    public function upload($local, $remote)
    {
        $serverConfig = $this->getConfiguration();
        $username = $serverConfig->getUser() ? $serverConfig->getUser() : null;
        $hostname = $serverConfig->getHost();
        $dir = dirname($remote);
        if (!in_array($dir, $this->mkdirs)) {
            $this->run('mkdir -p ' . escapeshellarg($dir));
            $this->mkdirs[] = $dir;
        }
        return $this->scpCopy($local, (!empty($username) ? $username . '@' : '') . $hostname . ':' . $remote);
    }