interface Callback {
  /**
   * Called when the request could not be executed due to cancellation, a connectivity problem or
   * timeout. Because networks can fail during an exchange, it is possible that the remote server
   * accepted the request before the failure.
   */
  fun onFailure(
    call: Call,
    e: IOException,
  )

  /**
   * Called when the HTTP response was successfully returned by the remote server. The callback may

    val empty = CompressionInterceptor()
    val client =
      clientTestRule
        .newClientBuilder()
        .addInterceptor(empty)
        .addInterceptor { chain ->
          assertThat(chain.request().header("Accept-Encoding")).isNull()
          Response
            .Builder()
            .request(chain.request())
            .protocol(Protocol.HTTP_1_1)
            .code(200)
            .message("OK")

    }

    @Override public SocketAddress getLocalSocketAddress() {
      return endpoint;
    }

    @Override public Socket accept() throws IOException {
      try {
        UnixSocketChannel channel = serverSocketChannel.accept();
        return new TunnelingUnixSocket(path, channel, endpoint);
      } catch (ClosedChannelException e) {
        SocketException exception = new SocketException();

            assertArrayEquals(testFileId, closeResponse.getFileId());
            assertEquals(testFileName, closeResponse.getFileName());
        }

        @Test
        @DisplayName("Constructor should accept null fileId")
        void testConstructorWithNullFileId() {
            // When
            Smb2CloseResponse closeResponse = new Smb2CloseResponse(mockConfig, null, testFileName);

            // Then

          forEach(prefix, consumer);
        }
        long size = spliterator.getExactSizeIfKnown();
        long[] counter = {0};
        spliterator.forEachRemaining(
            e -> {
              consumer.accept(e);
              counter[0]++;
            });
        if (size >= 0) {
          assertEquals(size, counter[0]);
        }
      }
    },
    ALTERNATE_ADVANCE_AND_SPLIT {
      @Override

          forEach(prefix, consumer);
        }
        long size = spliterator.getExactSizeIfKnown();
        long[] counter = {0};
        spliterator.forEachRemaining(
            e -> {
              consumer.accept(e);
              counter[0]++;
            });
        if (size >= 0) {
          assertEquals(size, counter[0]);
        }
      }
    },
    ALTERNATE_ADVANCE_AND_SPLIT {
      @Override

        public void connect(Consumer<HttpURLConnection> actionListener, Consumer<Exception> exceptionListener) {
            try {
                actionListener.accept(new MockHttpURLConnection(new URL(url)));
            } catch (MalformedURLException e) {
                exceptionListener.accept(e);
            }
        }
    }

    class MockHttpURLConnection extends HttpURLConnection {

        MockHttpURLConnection(URL u) {

                .stream(out -> {
                    try (final Writer writer = new BufferedWriter(new OutputStreamWriter(out.stream(), Constants.CHARSET_UTF_8))) {
                        writeCall.accept(writer);
                        writer.flush();
                    }
                });
    }

            return; // basically no way when called in Framework (because called when SpecifyColumn exists)
        }
        __specifiedProperties = newModifiedProperties();
        __specifiedProperties.accept(__modifiedProperties);
    }

    // ===================================================================================
    //                                                                Specified Properties

If an incoming request does not validate correctly then a `400` response will be sent.

## `GZipMiddleware` { #gzipmiddleware }

Handles GZip responses for any request that includes `"gzip"` in the `Accept-Encoding` header.

The middleware will handle both standard and streaming responses.

{* ../../docs_src/advanced_middleware/tutorial003.py hl[2,6] *}

The following arguments are supported: