/** This is only part that's allowed to read from the underlying source. */
    private var currentPart: PartSource? = null

    @Throws(IOException::class)
    constructor(response: ResponseBody) : this(
      source = response.source(),
      boundary =
        response.contentType()?.parameter("boundary")
          ?: throw ProtocolException("expected the Content-Type to have a boundary parameter"),
    )

  }

  private fun newResponse(
    responseBody: ResponseBody,
    code: Int = 200,
  ): Response {
    return Response.Builder()
      .request(
        Request.Builder()
          .url("https://example.com/")
          .build(),
      )
      .protocol(Protocol.HTTP_1_1)
      .code(code)
      .message("OK")
      .body(responseBody)
      .build()
  }

    val code: Int = response.code()
    val message: String = response.message()
    val handshake: Handshake? = response.handshake()
    val headers: Headers = response.headers()
    val body: ResponseBody = response.body()
    val networkResponse: Response? = response.networkResponse()
    val cacheResponse: Response? = response.cacheResponse()
    val priorResponse: Response? = response.priorResponse()

 * limitations under the License.
 */
package okhttp3

import okio.BufferedSource

open class ForwardingResponseBody(delegate: ResponseBody?) : ResponseBody() {
  private val delegate: ResponseBody

  fun delegate(): ResponseBody {
    return delegate
  }

  override fun contentType(): MediaType? {
    return delegate.contentType()
  }

  override fun contentLength(): Long {

    assertThat(source.exhausted()).isTrue()
    assertThat(source.readUtf8()).isEqualTo("")
  }

  @Test
  fun sourceClosesUnderlyingSource() {
    var closed = false

    val body: ResponseBody =
      object : ResponseBody() {
        override fun contentType(): MediaType? {
          return null
        }

        override fun contentLength(): Long {
          return 5
        }

   * [RequestBody.writeTo] after that method returns. For duplex requests bodies that condition is
   * lifted. Such writes occur on an application-provided thread and may occur concurrently with
   * reads of the [ResponseBody]. For duplex request bodies, [writeTo] should return
   * quickly, possibly by handing off the provided request body to another thread to perform
   * writing.
   *

    }
  }

  private class CacheResponseBody(
    val snapshot: DiskLruCache.Snapshot,
    private val contentType: String?,
    private val contentLength: String?,
  ) : ResponseBody() {
    private val bodySource: BufferedSource

    init {
      val source = snapshot.getSource(ENTRY_BODY)
      bodySource =
        object : ForwardingSource(source) {

    val response = call.execute()
    cancelLater(call, 500)
    val responseBody = response.body.byteStream()
    val buffer = ByteArray(1024)
    assertFailsWith<IOException> {
      while (responseBody.read(buffer) != -1) {
      }
    }.also { expected ->
      assertEquals(cancelMode == INTERRUPT, Thread.interrupted())
    }
    responseBody.close()

    if (transparentGzip &&
      "gzip".equals(networkResponse.header("Content-Encoding"), ignoreCase = true) &&
      networkResponse.promisesBody()
    ) {
      val responseBody = networkResponse.body
      if (responseBody != null) {
        val gzipSource = GzipSource(responseBody.source())
        val strippedHeaders =
          networkResponse.headers.newBuilder()
            .removeAll("Content-Encoding")

@ExperimentalOkHttpApi
interface Stream {
  val requestBody: BufferedSource
  val responseBody: BufferedSink

  /**
   * Terminate the stream so that no further data is transmitted or received. Note that
   * [requestBody] may return data after this call; that is the buffered data received before this
   * stream was canceled.
   *
   * This does nothing if [requestBody] and [responseBody] are already closed.
   *