val response1 = call1.execute()
    waitForDataFrames(Http2Connection.OKHTTP_CLIENT_WINDOW_SIZE)

    // Cancel the call and discard what we've buffered for the response body. This should free up
    // the connection flow-control window so new requests can proceed.
    call1.cancel()
    assertThat(
      response1.body.source().discard(1, TimeUnit.SECONDS),
      "Call should not have completed successfully.",

   */
  fun enqueue(responseCallback: Callback)

  /** Cancels the request, if possible. Requests that are already complete cannot be canceled. */
  fun cancel()

  /**
   * Returns true if this call has been either [executed][execute] or [enqueued][enqueue]. It is an
   * error to execute a call more than once.
   */
  fun isExecuted(): Boolean

}

internal fun Array<String>.indexOf(
  value: String,
  comparator: Comparator<String>,
): Int = indexOfFirst { comparator.compare(it, value) == 0 }

@Suppress("UNCHECKED_CAST")
internal fun Array<String>.concat(value: String): Array<String> {
  val result = copyOf(size + 1)
  result[result.lastIndex] = value
  return result as Array<String>
}

  ): List<Header> {
    continuation.left = length
    continuation.length = continuation.left
    continuation.padding = padding
    continuation.flags = flags
    continuation.streamId = streamId

    // TODO: Concat multi-value headers with 0x0, except COOKIE, which uses 0x3B, 0x20.
    // http://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-8.1.2.5
    hpackReader.readHeaders()
    return hpackReader.getAndResetHeaderList()

    val interceptor =
      Interceptor { chain: Interceptor.Chain ->
        val call = chain.call()
        callRef.set(call)
        assertThat(call.isCanceled()).isFalse()
        call.cancel()
        assertThat(call.isCanceled()).isTrue()
        chain.proceed(chain.request())
      }
    client =
      client.newBuilder()
        .addInterceptor(interceptor)
        .build()

  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==

concat-map@0.0.1:
  version "0.0.1"
  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
  integrity sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==

connect@^3.7.0:

    inFinished: Boolean,
  ) {
    pushQueue.execute("$connectionName[$streamId] onHeaders") {
      val cancel = pushObserver.onHeaders(streamId, requestHeaders, inFinished)
      ignoreIoExceptions {
        if (cancel) writer.rstStream(streamId, ErrorCode.CANCEL)
        if (cancel || inFinished) {
          this.withLock {
            currentPushRequests.remove(streamId)
          }
        }
      }

          .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
      }

          } else {
            // When we request a graceful close also schedule a cancel of the web socket.
            val cancelAfterCloseMillis = (messageOrClose as Close).cancelAfterCloseMillis
            taskQueue.execute("$name cancel", MILLISECONDS.toNanos(cancelAfterCloseMillis)) {
              cancel()
            }
          }
        } else if (messageOrClose == null) {

    return null
  }

  /**
   * Cancel all calls currently enqueued or executing. Includes calls executed both
   * [synchronously][Call.execute] and [asynchronously][Call.enqueue].
   */
  fun cancelAll() {
    this.withLock {
      for (call in readyAsyncCalls) {
        call.call.cancel()
      }
      for (call in runningAsyncCalls) {
        call.call.cancel()
      }
      for (call in runningSyncCalls) {