private var exchangeFinder: ExchangeFinder? = null

  var connection: RealConnection? = null
    private set
  private var timeoutEarlyExit = false

  /**
   * This is the same value as [exchange], but scoped to the execution of the network interceptors.
   * The [exchange] field is assigned to null when its streams end, which may be before or after the
   * network interceptors return.
   */

  private val bytesLeft: Long
    get() = if (limit == -1L) -1L else (limit - byteCount)

  fun hasNext(): Boolean = peekHeader() != null

  /**
   * Returns the next header to process unless this scope is exhausted.
   *
   * This returns null if:
   *
   *  * The stream is exhausted.
   *  * We've read all of the bytes of an object whose length is known.

    )
    assertSame(
      client.routeDatabase,
      client.newBuilder()
        .callTimeout(Duration.ofSeconds(5))
        .build()
        .routeDatabase,
    )

    // logically different scope of client for route db
    assertNotSame(
      client.routeDatabase,
      client.newBuilder()
        .dns { listOf() }
        .build()
        .routeDatabase,
    )
    assertNotSame(

      if (windowSize != DEFAULT_INITIAL_WINDOW_SIZE) {
        writer.windowUpdate(0, (windowSize - DEFAULT_INITIAL_WINDOW_SIZE).toLong())
      }
    }
    // Thread doesn't use client Dispatcher, since it is scoped potentially across clients via
    // ConnectionPool.
    taskRunner.newQueue().execute(name = connectionName, block = readerRunnable)
  }

    val expectedError = ErrorCode.PROTOCOL_ERROR
    writeMedium(frame, 8) // Without debug data there's only 2 32-bit fields.
    frame.writeByte(TYPE_GOAWAY)
    frame.writeByte(FLAG_NONE)
    frame.writeInt(0) // connection-scope
    frame.writeInt(expectedStreamId) // last good stream.
    frame.writeInt(expectedError.httpCode)

    // Check writer sends the same bytes.
    assertThat(sendGoAway(expectedStreamId, expectedError, EMPTY_BYTE_ARRAY))