DnsOptions.StaleDnsOptions.Builder

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.

public DnsOptions.StaleDnsOptions build()

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

@RequiresApi(value = VERSION_CODES.O)
public DnsOptions.StaleDnsOptions.Builder setFreshLookupTimeout(@NonNull Duration freshLookupTimeout)

Same as setFreshLookupTimeoutMillis but using java.time.Duration.

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.

@RequiresApi(value = VERSION_CODES.O)
public DnsOptions.StaleDnsOptions.Builder setMaxExpiredDelay(@NonNull Duration maxExpiredDelay)

Same as setMaxExpiredDelayMillis but using java.time.Duration.

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.

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.