)
  }

  private fun trackFailure(e: IOException) {
    hasFailure = true
    codec.carrier.trackFailure(call, e)
  }

  /** If [e] is non-null, this will return a non-null value. */
  fun bodyComplete(
    bytesRead: Long = -1L,
    responseDone: Boolean = false,
    requestDone: Boolean = false,
    e: IOException?,
  ): IOException? {
    if (e != null) {
      trackFailure(e)
    }