val response =
      response("https://httpbin.org/brotli", s.decodeHex()) {
        header("Content-Encoding", "br")
      }

    val uncompressed = uncompress(response)

    val responseString = uncompressed.body.string()
    assertThat(responseString).contains("\"brotli\": true,")
    assertThat(responseString).contains("\"Accept-Encoding\": \"br\"")
  }

  @Test

If there's no `gzip` in the header, it will not try to decompress the body.

That way, the same route class can handle gzip compressed or uncompressed requests.

{* ../../docs_src/custom_request_and_route/tutorial001.py hl[8:15] *}

### Create a custom `GzipRoute` class

  fun request(): Request

  /**
   * Returns the size in bytes of all messages enqueued to be transmitted to the server. This
   * doesn't include framing overhead. If compression is enabled, uncompressed messages size
   * is used to calculate this value. It also doesn't include any bytes buffered by the operating
   * system or network intermediaries. This method returns 0 if no messages are waiting in the

import okhttp3.ResponseBody.Companion.asResponseBody
import okhttp3.internal.http.promisesBody
import okio.GzipSource
import okio.buffer
import okio.source
import org.brotli.dec.BrotliInputStream

fun uncompress(response: Response): Response {
  if (!response.promisesBody()) {
    return response
  }
  val body = response.body
  val encoding = response.header("Content-Encoding") ?: return response

Harshavardhana <******@****.***> 1716837466 -0700

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.brotli

import okhttp3.Interceptor
import okhttp3.Response
import okhttp3.brotli.internal.uncompress

/**
 * Transparent Brotli response support.
 *
 * Adds Accept-Encoding: br to request and checks (and strips) for Content-Encoding: br in

### 4. Excluded Types

- Already compressed objects are not fit for compression since they do not have compressible patterns.
Such objects do not produce efficient [`LZ compression`](https://en.wikipedia.org/wiki/LZ77_and_LZ78)
which is a fitness factor for a lossless data compression.

Pre-compressed input typically compresses in excess of 2GiB/s per core,

Interceptors can be chained. Suppose you have both a compressing interceptor and a checksumming interceptor: you'll need to decide whether data is compressed and then checksummed, or checksummed and then compressed. OkHttp uses lists to track interceptors, and interceptors are called in order.

![Interceptors Diagram](../assets/images/******@****.***)

### Application Interceptors

#      batch: 100 # upto this many objects per archive
#      inmemory: true # indicates if the archive must be staged locally or in-memory
#      compress: false # S2/Snappy compressed archive
#      smallerThan: 5MiB # create archive for all objects smaller than 5MiB
#      skipErrs: false # skips any source side read() errors

  # target where the objects must be replicated
  target:

@ElementTypesAreNonnullByDefault
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  // We deliberately avoid caching the asList and hashCode here, to ensure that with
  // compressed oops, a SingletonImmutableSet packs all the way down to the optimal 16 bytes.

  final transient E element;

  SingletonImmutableSet(E element) {
    this.element = Preconditions.checkNotNull(element);
  }