* See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http2

import okhttp3.internal.http2.flowcontrol.WindowCounter

interface FlowControlListener {
  /**
   * Notification that the receiving stream flow control window has changed.
   * [WindowCounter] generally carries the client view of total and acked bytes.
   */
  fun receivingStreamWindowChanged(

    fun pingIntervalMillis(pingIntervalMillis: Int) =
      apply {
        this.pingIntervalMillis = pingIntervalMillis
      }

    fun flowControlListener(flowControlListener: FlowControlListener) =
      apply {
        this.flowControlListener = flowControlListener
      }

    fun build(): Http2Connection = Http2Connection(this)
  }

  /**

    val flowControlListener = connectionListener as? FlowControlListener ?: FlowControlListener.None
    val http2Connection =
      Http2Connection
        .Builder(client = true, taskRunner)
        .socket(socket, route.address.url.host)
        .listener(this)
        .pingIntervalMillis(pingIntervalMillis)
        .flowControlListener(flowControlListener)
        .build()

            }
          } finally {
            if (doReadTimeout) {
              readTimeout.exitAndThrowIfTimedOut()
            }
          }
        }
        connection.flowControlListener.receivingStreamWindowChanged(id, readBytes, readBuffer.size)

        // 2. Do it outside of the synchronized block and timeout.

        if (tryAgain) {
          continue
        }