# JSON with Bytes as Base64 { #json-with-bytes-as-base64 }

If your app needs to receive and send JSON data, but you need to include binary data in it, you can encode it as base64.

## Base64 vs Files { #base64-vs-files }

Consider first if you can use [Request Files](../tutorial/request-files.md) for uploading binary data and [Custom Response - FileResponse](./custom-response.md#fileresponse--fileresponse-) for sending binary data, instead of encoding it in JSON.

// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"bytes"
	"compress/gzip"
	"context"
	"encoding/json"

Um `Request` também tem um `request.receive`, que é uma função para "receber" o corpo da requisição.

O dicionário `scope` e a função `receive` são ambos parte da especificação ASGI.

E essas duas coisas, `scope` e `receive`, são o que é necessário para criar uma nova instância de `Request`.

 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.config;

        default -> "UNKNOWN";
        };
        final String str = errorCode == 0 ? "0" : SmbException.getMessageByCode(errorCode);
        return "command=" + c + ",received=" + received + ",errorCode=" + str + ",flags=0x" + Hexdump.toHexString(flags & 0xFF, 4)
                + ",flags2=0x" + Hexdump.toHexString(flags2, 4) + ",signSeq=" + signSeq + ",tid=" + tid + ",pid=" + pid + ",uid=" + uid

    }

    /**
     * @return the received
     */
    @Override
    public final boolean isReceived() {
        return this.received;
    }

    @Override
    public final void clearReceived() {
        this.received = false;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Response#received()
     */
    @Override
    public void received() {

У `Request` є атрибут `request.scope` - це просто Python `dict`, що містить метадані, пов'язані із запитом.

Також `Request` має `request.receive` - це функція для «отримання» тіла запиту.

`scope` `dict` і функція `receive` є частиною специфікації ASGI.

І саме ці дві сутності - `scope` та `receive` - потрібні для створення нового екземпляра `Request`.

    """Call the ASGI app for *path* and cancel after *timeout* seconds.

    Returns `True` if the cancellation was delivered (i.e. it did not hang).
    """
    chunks: list[bytes] = []

    async def receive():  # type: ignore[no-untyped-def]
        # Simulate a client that never disconnects, rely on cancellation
        await anyio.sleep(float("inf"))
        return {"type": "http.disconnect"}  # pragma: no cover

        @Override
        public boolean isReceived() {
            return this.received;
        }

        @Override
        public void received() {
            this.received = true;
        }

        @Override
        public void clearReceived() {
            this.received = false;
        }

        @Override
        public int getGrantedCredits() {

        synchronized (session.transport()) {
            if (response != null) {
                response.received = false;
            }
            treeConnect(request, response);
            if (request == null || response != null && response.received) {
                return;
            }
            if (!service.equals("A:")) {
                switch (request.command) {