io.netty.resolver.dns (Netty API Reference (4.1.33.Final))

Interface Summary
Interface	Description
AuthoritativeDnsServerCache	Cache which stores the nameservers that should be used to resolve a specific hostname.
DnsCache	A cache for DNS resolution entries.
DnsCacheEntry	Represents the results from a previous DNS query which can be cached.
DnsCnameCache	A cache for `CNAME`s.
DnsQueryLifecycleObserver	This interface provides visibility into individual DNS queries.
DnsQueryLifecycleObserverFactory	Used to generate new instances of `DnsQueryLifecycleObserver`.
DnsServerAddressStream	An infinite stream of DNS server addresses.
DnsServerAddressStreamProvider	Provides an opportunity to override which `DnsServerAddressStream` is used to resolve a specific hostname.

Class Summary
Class	Description
BiDnsQueryLifecycleObserver	Combines two `DnsQueryLifecycleObserver` into a single `DnsQueryLifecycleObserver`.
BiDnsQueryLifecycleObserverFactory	Combines two `DnsQueryLifecycleObserverFactory` into a single `DnsQueryLifecycleObserverFactory`.
DefaultAuthoritativeDnsServerCache	Default implementation of `AuthoritativeDnsServerCache`, backed by a `ConcurrentMap`.
DefaultDnsCache	Default implementation of `DnsCache`, backed by a `ConcurrentMap`.
DefaultDnsCnameCache	Default implementation of a `DnsCnameCache`.
DefaultDnsServerAddressStreamProvider	A `DnsServerAddressStreamProvider` which will use predefined default DNS servers to use for DNS resolution.
DnsAddressResolverGroup	A `AddressResolverGroup` of `DnsNameResolver`s.
DnsNameResolver	A DNS-based `InetNameResolver`.
DnsNameResolverBuilder	A `DnsNameResolver` builder.
DnsServerAddresses	Provides an infinite sequence of DNS server addresses to `DnsNameResolver`.
DnsServerAddressStreamProviders	Utility methods related to `DnsServerAddressStreamProvider`.
MultiDnsServerAddressStreamProvider	A `DnsServerAddressStreamProvider` which iterates through a collection of `DnsServerAddressStreamProvider` until the first non-`null` result is found.
NameServerComparator	Special `Comparator` implementation to sort the nameservers to use when follow redirects.
NoopAuthoritativeDnsServerCache	A noop `AuthoritativeDnsServerCache` that actually never caches anything.
NoopDnsCache	A noop DNS cache that actually never caches anything.
NoopDnsCnameCache
NoopDnsQueryLifecycleObserverFactory
RoundRobinDnsAddressResolverGroup	A `AddressResolverGroup` of `DnsNameResolver`s that supports random selection of destination addresses if multiple are provided by the nameserver.
SequentialDnsServerAddressStreamProvider	A `DnsServerAddressStreamProvider` which is backed by a sequential list of DNS servers.
SingletonDnsServerAddressStreamProvider	A `DnsServerAddressStreamProvider` which always uses a single DNS server for resolution.
UnixResolverDnsServerAddressStreamProvider	Able to parse files such as /etc/resolv.conf and /etc/resolver to respect the system default domain servers.

Exception Summary
Exception	Description
DnsNameResolverException	A `RuntimeException` raised when `DnsNameResolver` failed to perform a successful query.
DnsNameResolverTimeoutException	A `DnsNameResolverException` raised when `DnsNameResolver` failed to perform a successful query because of an timeout.

Package io.netty.resolver.dns Description

An alternative to Java's built-in domain name lookup mechanism that resolves a domain name asynchronously, which supports the queries of an arbitrary DNS record type as well.