## 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.

JSON can only contain UTF-8 encoded strings, so it can't contain raw bytes.

        .addNetworkInterceptor(chain -> {
          Response originalResponse = chain.proceed(chain.request());
          return originalResponse.newBuilder()
              .body(new ProgressResponseBody(originalResponse.body(), progressListener))
              .build();
        })
        .build();

    try (Response response = client.newCall(request).execute()) {

import org.codelibs.fess.helper.PermissionHelper;
import org.codelibs.fess.opensearch.config.exentity.FileConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin file configuration management.

from fastapi import Depends, FastAPI, Response
from fastapi.testclient import TestClient

app = FastAPI()


def set_cookie(*, response: Response):
    response.set_cookie("cookie-name", "cookie-value")
    return {}


def set_indirect_cookie(*, dep: str = Depends(set_cookie)):
    return dep


@app.get("/directCookie")
def get_direct_cookie(dep: str = Depends(set_cookie)):
    return {"dep": dep}

          Response
            .Builder()
            .request(chain.request())
            .protocol(Protocol.HTTP_1_1)
            .code(200)
            .message("OK")
            .body(gzip("Hello").asResponseBody())
            .header("Content-Encoding", "gzip")
            .build()
        }.build()

    val response = client.newCall(Request("https://google.com/robots.txt".toHttpUrl())).execute()

    class ConstructorTests {

        @Test
        @DisplayName("Should create response with configuration")
        void testConstructor() {
            Smb2EchoResponse response = new Smb2EchoResponse(mockConfig);
            assertNotNull(response);
            assertEquals(mockConfig, response.getConfig());
        }

        @Test
        @DisplayName("Should extend ServerMessageBlock2Response")

import org.codelibs.fess.dict.stemmeroverride.StemmerOverrideFile;
import org.codelibs.fess.dict.stemmeroverride.StemmerOverrideItem;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;
import org.lastaflute.web.response.StreamResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin Stemmer Override dictionary management.

public abstract class Dispatcher : Closeable {
  /**
   * Returns a response to satisfy `request`. This method may block (for instance, to wait on
   * a CountdownLatch).
   */
  @Throws(InterruptedException::class)
  public abstract fun dispatch(request: RecordedRequest): MockResponse

  /**
   * Returns an early guess of the next response, used for policy on how an incoming request should

        responseField.setAccessible(true);
        final Object response = responseField.get(apiResult);
        assertTrue(response instanceof ApiStartJobResponse);

        final Field jobLogIdField = ApiStartJobResponse.class.getDeclaredField("jobLogId");
        jobLogIdField.setAccessible(true);
        return (String) jobLogIdField.get(response);
    }

 *
 * [rfc_6265_53]: https://tools.ietf.org/html/rfc6265#section-5.3
 */
interface CookieJar {
  /**
   * Saves [cookies] from an HTTP response to this store according to this jar's policy.
   *
   * Note that this method may be called a second time for a single HTTP response if the response
   * includes a trailer. For this obscure HTTP feature, [cookies] contains only the trailer's
   * cookies.
   */
  fun saveFromResponse(