DnsOptions.StaleDnsOptions.Builder

public static final class DnsOptions.StaleDnsOptions.Builder extends Object

Builder for DnsOptions.StaleDnsOptions.

Public Method Summary

DnsOptions.StaleDnsOptions.Builder	allowCrossNetworkUsage(boolean allowCrossNetworkUsage) Sets whether to return results originating from other networks or not.
DnsOptions.StaleDnsOptions	build() Creates and returns the final DnsOptions.StaleDnsOptions instance, based on the values in this builder.
DnsOptions.StaleDnsOptions.Builder	setFreshLookupTimeout(Duration freshLookupTimeout) Same as setFreshLookupTimeoutMillis(long) but using Duration.
DnsOptions.StaleDnsOptions.Builder	setFreshLookupTimeoutMillis(long freshLookupTimeoutMillis) Sets how long (in milliseconds) to wait for a DNS request to return before using a stale result instead.
DnsOptions.StaleDnsOptions.Builder	setMaxExpiredDelayMillis(long maxExpiredDelayMillis) Sets how long (in milliseconds) past expiration to consider using expired results.
DnsOptions.StaleDnsOptions.Builder	setMaxExpiredDelayMillis(Duration maxExpiredDelay) Same as setMaxExpiredDelayMillis(long) but using Duration.
DnsOptions.StaleDnsOptions.Builder	useStaleOnNameNotResolved(boolean useStaleOnNameNotResolved) Sets whether to allow use of stale DNS results when network resolver fails to resolve the hostname.

Inherited Method Summary

From class java.lang.Object

Object	clone()
boolean	equals(Object arg0)
void	finalize()
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Public Methods

public DnsOptions.StaleDnsOptions.Builder allowCrossNetworkUsage (boolean allowCrossNetworkUsage)

Sets whether to return results originating from other networks or not. Normally, Cronet clears the DNS cache entirely when switching connections, e.g. between two Wi-Fi networks or from Wi-Fi to 4G.

Parameters

allowCrossNetworkUsage

Returns

• the builder for chaining

public DnsOptions.StaleDnsOptions build ()

Creates and returns the final DnsOptions.StaleDnsOptions instance, based on the values in this builder.

public DnsOptions.StaleDnsOptions.Builder setFreshLookupTimeout (Duration freshLookupTimeout)

Same as setFreshLookupTimeoutMillis(long) but using Duration.

Parameters

freshLookupTimeout

Returns

• the builder for chaining

public DnsOptions.StaleDnsOptions.Builder setFreshLookupTimeoutMillis (long freshLookupTimeoutMillis)

Sets how long (in milliseconds) to wait for a DNS request to return before using a stale result instead. If set to zero, returns stale results instantly but continues the DNS request in the background to update the cache.

Parameters

freshLookupTimeoutMillis

Returns

• the builder for chaining

public DnsOptions.StaleDnsOptions.Builder setMaxExpiredDelayMillis (long maxExpiredDelayMillis)

Sets how long (in milliseconds) past expiration to consider using expired results. Setting the value to zero means expired records can be used indefinitely.

Parameters

maxExpiredDelayMillis

Returns

• the builder for chaining

public DnsOptions.StaleDnsOptions.Builder setMaxExpiredDelayMillis (Duration maxExpiredDelay)

Same as setMaxExpiredDelayMillis(long) but using Duration.

Parameters

maxExpiredDelay

Returns

• the builder for chaining

public DnsOptions.StaleDnsOptions.Builder useStaleOnNameNotResolved (boolean useStaleOnNameNotResolved)

Sets whether to allow use of stale DNS results when network resolver fails to resolve the hostname.

Depending on the use case, if Cronet quickly sees a fresh failure, it may be desirable to use the failure as it is technically the fresher result, and we had such a fresh result quickly; or, prefer having any result (even if stale) to use over having a failure.

Parameters

useStaleOnNameNotResolved

Returns

• the builder for chaining