ExponentialWeightedAverageTimeToFirstByteEstimator

Kotlin |Java

@UnstableApi
class ExponentialWeightedAverageTimeToFirstByteEstimator : TimeToFirstByteEstimator

Implementation of TimeToFirstByteEstimator based on exponential weighted average.

Summary

Constants
`const Double`	`DEFAULT_SMOOTHING_FACTOR = 0.85` The default smoothing factor.

Public constructors
`ExponentialWeightedAverageTimeToFirstByteEstimator()` Creates an instance using the `DEFAULT_SMOOTHING_FACTOR`.
`ExponentialWeightedAverageTimeToFirstByteEstimator( smoothingFactor: Double )` Creates an instance.

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.

const val DEFAULT_SMOOTHING_FACTOR = 0.85: Double

The default smoothing factor.

ExponentialWeightedAverageTimeToFirstByteEstimator()

Creates an instance using the DEFAULT_SMOOTHING_FACTOR.

ExponentialWeightedAverageTimeToFirstByteEstimator(
    smoothingFactor: Double
)

Creates an instance.

Parameters
`smoothingFactor: Double`	The exponential weighted average smoothing factor.

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.