TimeToFirstByteEstimator

Kotlin |Java

@UnstableApi
interface TimeToFirstByteEstimator

Known direct subclasses

`ExponentialWeightedAverageTimeToFirstByteEstimator`	Implementation of `TimeToFirstByteEstimator` based on exponential weighted average.
`PercentileTimeToFirstByteEstimator`	Implementation of `TimeToFirstByteEstimator` that returns a configured percentile of a sliding window of collected response times.

Provides an estimate of the time to first byte of a transfer.

Summary

Public functions
`Long`	`getTimeToFirstByteEstimateUs()` Returns the estimated time to first byte of the response body, in microseconds, or `TIME_UNSET` if no estimate is available.
`Unit`	`onTransferInitializing(dataSpec: DataSpec!)` Called when a transfer is being initialized.
`Unit`	`onTransferStart(dataSpec: DataSpec!)` Called when a transfer starts.
`Unit`	`reset()` Resets the estimator.

fun getTimeToFirstByteEstimateUs(): Long

Returns the estimated time to first byte of the response body, in microseconds, or TIME_UNSET if no estimate is available.

fun onTransferInitializing(dataSpec: DataSpec!): Unit

Called when a transfer is being initialized.

Parameters
`dataSpec: DataSpec!`	Describes the data for which the transfer is initialized.

fun onTransferStart(dataSpec: DataSpec!): Unit

Called when a transfer starts.

Parameters
`dataSpec: DataSpec!`	Describes the data being transferred.

fun reset(): Unit

Resets the estimator.