*  * [onHeaders] (unless canceled)
 *  * [onData] (optional sequence of data frames)
 *
 * As a stream ID is scoped to a single HTTP/2 connection, implementations which target multiple
 * connections should expect repetition of stream IDs.
 *
 * Return true to request cancellation of a pushed stream.  Note that this does not guarantee
 * future frames won't arrive on the stream ID.
 */
interface PushObserver {
  /**

    - [Node binaries](#node-binaries-4)
  - [Changelog since v1.18.15](#changelog-since-v11815)
  - [Changes by Kind](#changes-by-kind-4)
    - [Bug or Regression](#bug-or-regression-4)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-4)
    - [Added](#added-4)
    - [Changed](#changed-4)
    - [Removed](#removed-4)
- [v1.18.15](#v11815)
  - [Downloads for v1.18.15](#downloads-for-v11815)

    opcode = b0 and B0_MASK_OPCODE
    isFinalFrame = b0 and B0_FLAG_FIN != 0
    isControlFrame = b0 and OPCODE_FLAG_CONTROL != 0

    // Control frames must be final frames (cannot contain continuations).
    if (isControlFrame && !isFinalFrame) {
      throw ProtocolException("Control frames must be final.")
    }

    val reservedFlag1 = b0 and B0_FLAG_RSV1 != 0
    when (opcode) {
      OPCODE_TEXT, OPCODE_BINARY -> {

  - [Changes by Kind](#changes-by-kind-3)
    - [API Change](#api-change)
    - [Feature](#feature-3)
    - [Bug or Regression](#bug-or-regression-3)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-3)
    - [Added](#added-3)
    - [Changed](#changed-3)
    - [Removed](#removed-3)
- [v1.24.13](#v12413)
  - [Downloads for v1.24.13](#downloads-for-v12413)

/kind bug
/kind cleanup
/kind documentation
/kind feature

Optionally add one or more of the following kinds if applicable:
/kind api-change
/kind deprecation
/kind failing-test
/kind flake
/kind regression
-->

#### What this PR does / why we need it:

#### Which issue(s) this PR is related to:
<!--
Please link relevant issues to help with tracking.

  @RegisterExtension
  val clientTestRule = configureClientTestRule()

  @RegisterExtension
  val testLogHandler: TestLogHandler = TestLogHandler(Http2::class.java)

  // Flaky https://github.com/square/okhttp/issues/4632
  // Flaky https://github.com/square/okhttp/issues/4633
  private val handshakeCertificates: HandshakeCertificates =
    platform.localhostHandshakeCertificates()

  @StartStop

  - [Changelog since v1.25.14](#changelog-since-v12514)
  - [Changes by Kind](#changes-by-kind)
    - [Feature](#feature)
    - [Bug or Regression](#bug-or-regression)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-1)
    - [Added](#added-1)
    - [Changed](#changed-1)
    - [Removed](#removed-1)
- [v1.25.14](#v12514)
  - [Downloads for v1.25.14](#downloads-for-v12514)

    - [Container Images](#container-images-1)
  - [Changelog since v1.33.2](#changelog-since-v1332)
  - [Changes by Kind](#changes-by-kind-1)
    - [Bug or Regression](#bug-or-regression-1)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-1)
    - [Added](#added-1)
    - [Changed](#changed-1)
    - [Removed](#removed-1)
- [v1.33.2](#v1332)
  - [Downloads for v1.33.2](#downloads-for-v1332)

  /** Outgoing messages and close frames in the order they should be written. */
  private val messageAndCloseQueue = ArrayDeque<Any>()

  /** The total size in bytes of enqueued but not yet transmitted messages. */
  private var queueSize = 0L

  /** True if we've enqueued a close frame. No further message frames will be enqueued. */
  private var enqueuedClose = false

   */
  private fun doReadTimeout() = !connection.client || sink.closed || sink.finished

  /**
   * A source that reads the incoming data frames of a stream. Although this class uses
   * synchronization to safely receive incoming data frames, it is not intended for use by multiple
   * readers.
   */
  inner class FramingSource internal constructor(