}

  private fun peekTrailers(protocol: Protocol) {
    val responseBody = "a".repeat(OKHTTP_CLIENT_WINDOW_SIZE)
    enableProtocol(protocol)

    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("h1", "v1")
        .trailers(headersOf("t1", "v2"))
        .body(protocol, responseBody)
        .build(),
    )

    val call = client.newCall(Request(server.url("/")))

 */
package okhttp3.internal

import okhttp3.MediaType
import okhttp3.Response
import okhttp3.ResponseBody
import okio.Buffer
import okio.Source
import okio.Timeout
import okio.buffer

internal class UnreadableResponseBody(
  private val mediaType: MediaType?,
  private val contentLength: Long,
) : ResponseBody(),
  Source {
  override fun contentType() = mediaType

  override fun contentLength() = contentLength

    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()

  }

  private static class ProgressResponseBody extends ResponseBody {

    private final ResponseBody responseBody;
    private final ProgressListener progressListener;
    private BufferedSource bufferedSource;

    ProgressResponseBody(ResponseBody responseBody, ProgressListener progressListener) {
      this.responseBody = responseBody;
      this.progressListener = progressListener;
    }

    assertThat(body.string()).isEqualTo("hello")
  }

  @Test
  fun stringClosesUnderlyingSource() {
    val closed = AtomicBoolean()
    val body: ResponseBody =
      object : ResponseBody() {
        override fun contentType(): MediaType? = null

        override fun contentLength(): Long = 5

        override fun source(): BufferedSource {

	public final fun create (Lokhttp3/MediaType;JLokio/BufferedSource;)Lokhttp3/ResponseBody;
	public final fun create (Lokhttp3/MediaType;Ljava/lang/String;)Lokhttp3/ResponseBody;
	public final fun create (Lokhttp3/MediaType;Lokio/ByteString;)Lokhttp3/ResponseBody;
	public final fun create (Lokhttp3/MediaType;[B)Lokhttp3/ResponseBody;
	public final fun create (Lokio/BufferedSource;Lokhttp3/MediaType;J)Lokhttp3/ResponseBody;

import okhttp3.ResponseBody
import okio.BufferedSource

class RealResponseBody(
  /**
   * Use a string to avoid parsing the content type until needed. This also defers problems caused
   * by malformed content types.
   */
  private val contentTypeString: String?,
  private val contentLength: Long,
  private val source: BufferedSource,
) : ResponseBody() {

          },
        )
        throw e
      }

      val tookMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs)

      val responseBody = response.body!!
      val contentLength = responseBody.contentLength()
      val bodySize = if (contentLength != -1L) "$contentLength-byte" else "unknown-length"
      logger.log(
        buildString {
          append("<-- ${response.code}")

| RequestBody.create(String)          | String.toRequestBody()          |
| ResponseBody.create(BufferedSource) | BufferedSource.asResponseBody() |
| ResponseBody.create(ByteArray)      | ByteArray.toResponseBody()      |
| ResponseBody.create(ByteString)     | ByteString.toResponseBody()     |
| ResponseBody.create(String)         | String.toResponseBody()         |


SAM Conversions
---------------

            if (isUpgradeRequest) {
              exchange.noRequestBody() // Failed upgrade request has no outbound data.
            }
            val responseBody = exchange.openResponseBody(response)
            response
              .newBuilder()
              .body(responseBody)
              .trailers(
                object : TrailersSource {
                  override fun peek() = exchange.peekTrailers()