stream!!.receiveHeaders(headerBlock.toHeaders(), inFinished)
    }

    override fun rstStream(
      streamId: Int,
      errorCode: ErrorCode,
    ) {
      if (pushedStream(streamId)) {
        pushResetLater(streamId, errorCode)
        return
      }
      val rstStream = removeStream(streamId)
      rstStream?.receiveRstStream(errorCode)
    }

    override fun settings(

    val errorCodeInt = source.readInt()
    val errorCode =
      ErrorCode.fromHttp2(errorCodeInt) ?: throw IOException(
        "TYPE_RST_STREAM unexpected error code: $errorCodeInt",
      )
    handler.rstStream(streamId, errorCode)
  }

  @Throws(IOException::class)
  private fun readSettings(
    handler: Handler,
    length: Int,
    flags: Int,
    streamId: Int,
  ) {

  }

  @Throws(IOException::class)
  fun flush() {
    this.withLock {
      if (closed) throw IOException("closed")
      sink.flush()
    }
  }

  @Throws(IOException::class)
  fun rstStream(
    streamId: Int,
    errorCode: ErrorCode,
  ) {
    this.withLock {
      if (closed) throw IOException("closed")
      require(errorCode.httpCode != -1)

      frameHeader(

    frame.writeInt(expectedStreamId and 0x7fffffff)
    frame.writeInt(ErrorCode.PROTOCOL_ERROR.httpCode)
    reader.nextFrame(
      requireSettings = false,
      object : BaseTestHandler() {
        override fun rstStream(
          streamId: Int,
          errorCode: ErrorCode,
        ) {
          assertThat(streamId).isEqualTo(expectedStreamId)
          assertThat(errorCode).isEqualTo(ErrorCode.PROTOCOL_ERROR)
        }

      check(hasResponseHeaders || isLocallyInitiated) {
        "reply before requesting the sink"
      }
    }
    return sink
  }

  /**
   * Abnormally terminate this stream. This blocks until the `RST_STREAM` frame has been
   * transmitted.
   */
  @Throws(IOException::class)
  fun close(
    rstStatusCode: ErrorCode,
    errorException: IOException?,
  ) {

    when OkHttp retrieves ALPN state on a closed connection.


## Version 4.9.3

_2021-11-21_

 *  Fix: Don't fail HTTP/2 responses if they complete before a `RST_STREAM` is sent.


## Version 4.9.2

_2021-09-30_

 *  Fix: Don't include potentially-sensitive header values in `Headers.toString()` or exceptions.