.append(" (");
        format.format(message, contentLength);

        Duration duration =
                Duration.between(Instant.ofEpochMilli(resource.getTransferStartTime()), MonotonicClock.now());
        if ((duration.getSeconds() | duration.getNano()) > 0) { // duration.isPositive()
            long bytesPerSecond = Math.round(contentLength / (double) duration.toSeconds());
            message.append(" at ");

        message.style(STYLE).append(" (").append(format.format(contentLength));

        Duration duration = Duration.between(resource.getStartTime(), MonotonicClock.now());
        long nanos = duration.toNanos();
        if (nanos > 0) {
            double seconds = nanos / (double) TimeUnit.SECONDS.toNanos(1); // Convert to fractional seconds
            double bytesPerSecond = contentLength / seconds;
            message.append(" at ");

  /**
   * Returns the number of bytes that will be written to sink in a call to [writeTo],
   * or -1 if that count is unknown.
   */
  @Throws(IOException::class)
  open fun contentLength(): Long = -1L

  /** Writes the content of this request to [sink]. */
  @Throws(IOException::class)
  abstract fun writeTo(sink: BufferedSink)

  /**

  fun stringClosesUnderlyingSource() {
    val closed = AtomicBoolean()
    val body: ResponseBody =
      object : ResponseBody() {
        override fun contentType(): MediaType? = null

        override fun contentLength(): Long = 5

        override fun source(): BufferedSource {
          val source = Buffer().writeUtf8("hello")
          return object : ForwardingSource(source) {
            @Throws(IOException::class)

  private val delegate: RequestBody

  fun delegate(): RequestBody = delegate

  override fun contentType(): MediaType? = delegate.contentType()

  @Throws(IOException::class)
  override fun contentLength(): Long = delegate.contentLength()

  @Throws(IOException::class)
  override fun writeTo(sink: BufferedSink) {
    delegate.writeTo(sink)
  }

  override fun isDuplex(): Boolean = delegate.isDuplex()

    assertThat(body.contentLength()).isEqualTo(3)
    assertThat(bodyToHex(body)).isEqualTo("e0a080")
  }

  @Test
  fun stringWithNonDefaultCharsetSpecified() {
    val contentType = "text/plain; charset=utf-16be".toMediaType()
    val body = "\u0800".toRequestBody(contentType)
    assertThat(body.contentType()).isEqualTo(contentType)
    assertThat(body.contentLength()).isEqualTo(2)

        TransferResource resource = event.getResource();
        long contentLength = event.getTransferredBytes();
        if (contentLength >= 0) {
            String type = (event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded");
            String len = contentLength >= 1024 ? toKB(contentLength) + " KB" : contentLength + " B";

            String throughput = "";

      }

      // We can't measure the body's size without the sizes of its components.
      val contentLength = body.contentLength()
      if (contentLength == -1L && countBytes) {
        byteCountBuffer!!.clear()
        return -1L
      }

      sink.write(CRLF)

      if (countBytes) {
        byteCount += contentLength
      } else {
        body.writeTo(sink)
      }

      sink.write(CRLF)
    }

      ) {
        exchange.noNewExchangesOnConnection()
      }
      if ((code == 204 || code == 205) && response.body.contentLength() > 0L) {
        throw ProtocolException(
          "HTTP $code had non-zero Content-Length: ${response.body.contentLength()}",
        )
      }
      return response
    } catch (e: IOException) {
      if (sendRequestException != null) {

                  }
                }
                println(bytesWritten)
                if (contentLength != -1L) {
                  println("${100 * bytesWritten / contentLength}% done")
                }
              }
            }
          }

          val file = File("docs/images/logo-square.png")
          val requestBody: RequestBody = file.asRequestBody(MEDIA_TYPE_PNG)