this,
          IllegalStateException("Invalid content-type: ${body.contentType()}"),
          response,
        )
        return
      }

      // This is a long-lived response. Cancel full-call timeouts.
      call?.timeout()?.cancel()

      // Replace the body with a stripped one so the callbacks can't see real data.
      val response = response.stripBody()

      val reader = ServerSentEventReader(body.source(), this)

          .bodyDelay(5, TimeUnit.SECONDS)
          .body("abc")
          .build(),
      )

      val call = client.newCall(request)

      try {
        call.executeAsync().use {
          call.cancel()
          withContext(Dispatchers.IO) {
            it.body.string()
          }
          fail("No expected to get response")
        }
      } catch (ioe: IOException) {
        // expected
      }

  @Throws(IOException::class)
  internal fun cancelStreamIfNecessary() {
    lock.assertNotHeld()

    val open: Boolean
    val cancel: Boolean
    this.withLock {
      cancel = !source.finished && source.closed && (sink.finished || sink.closed)
      open = isOpen
    }
    if (cancel) {
      // RST this stream to prevent additional data from being sent. This is safe because the input

public abstract interface class okhttp3/sse/EventSource {
	public abstract fun cancel ()V
	public abstract fun request ()Lokhttp3/Request;
}

public abstract interface class okhttp3/sse/EventSource$Factory {
	public abstract fun newEventSource (Lokhttp3/Request;Lokhttp3/sse/EventSourceListener;)Lokhttp3/sse/EventSource;
}

public abstract class okhttp3/sse/EventSourceListener {
	public fun <init> ()V
	public fun onClosed (Lokhttp3/sse/EventSource;)V

  NO_ERROR(0),

  PROTOCOL_ERROR(1),

  INTERNAL_ERROR(2),

  FLOW_CONTROL_ERROR(3),

  SETTINGS_TIMEOUT(4),

  STREAM_CLOSED(5),

  FRAME_SIZE_ERROR(6),

  REFUSED_STREAM(7),

  CANCEL(8),

  COMPRESSION_ERROR(9),

  CONNECT_ERROR(0xa),

  ENHANCE_YOUR_CALM(0xb),

  INADEQUATE_SECURITY(0xc),

  HTTP_1_1_REQUIRED(0xd),
  ;

  companion object {

    assertFailsWith<IOException> {
      requestBody.writeUtf8("request body\n")
      requestBody.flush()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("stream was reset: CANCEL")
    }
    body.awaitSuccess()
    assertThat(listener.recordedEventTypes()).containsExactly(
      "CallStart", "ProxySelectStart", "ProxySelectEnd", "DnsStart", "DnsEnd", "ConnectStart",

          """
          |data: hey
          |
          |
          """.trimMargin(),
        ).setHeader("content-type", "text/event-stream")
        .build(),
    )
    listener.enqueueCancel() // Will cancel in onOpen().
    newEventSource()
    listener.assertOpen()
    listener.assertFailure("canceled")
  }

  @Test
  fun badContentType() {
    server.enqueue(
      MockResponse.Builder()

  private val controlFrameBuffer = Buffer()
  private val messageFrameBuffer = Buffer()

  /** Lazily initialized on first use. */
  private var messageInflater: MessageInflater? = null

  // Masks are only a concern for server writers.
  private val maskKey: ByteArray? = if (isClient) null else ByteArray(4)
  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) null else Buffer.UnsafeCursor()

  interface FrameCallback {

      encodings[ 0x15] = encoding // Negative Acknowledgment
      encodings[ 0x16] = encoding // Synchronous idle
      encodings[ 0x17] = encoding // End of Transmission Block
      encodings[ 0x18] = encoding // Cancel
      encodings[ 0x19] = encoding // End of Medium
      encodings[ 0x1a] = encoding // Substitute
      encodings[ 0x1b] = encoding // Escape
      encodings[ 0x1c] = encoding // File Separator

    val connectionClose = CountDownLatch(1)
    val streams =
      object : RealWebSocket.Streams(false, source, sink) {
        override fun close() = connectionClose.countDown()

        override fun cancel() {
          socket.closeQuietly()
        }
      }
    val webSocket =
      RealWebSocket(
        taskRunner = taskRunner,
        originalRequest = fancyRequest,