Summary: Nested Classes | Constants | Methods | Inherited Methods

DnsResolver

public final class DnsResolver
extends Object

java.lang.Object
↳	android.net.DnsResolver

Dns resolver class for asynchronous dns querying

Summary

Nested classes
`interface`	`DnsResolver.InetAddressAnswerListener` listener for receiving parsed answers
`interface`	`DnsResolver.RawAnswerListener` listener for receiving raw answers

Constants
`int`	`CLASS_IN`
`int`	`FLAG_EMPTY`
`int`	`FLAG_NO_CACHE_LOOKUP`
`int`	`FLAG_NO_CACHE_STORE`
`int`	`FLAG_NO_RETRY`
`int`	`TYPE_A`
`int`	`TYPE_AAAA`

Public methods
`static DnsResolver`	`getInstance()` Get instance for DnsResolver
`void`	`query(Network network, byte[] query, int flags, Handler handler, DnsResolver.RawAnswerListener listener)` Pass in a blob and corresponding setting, get a blob back asynchronously with the entire raw answer.
`void`	`query(Network network, String domain, int flags, Handler handler, DnsResolver.InetAddressAnswerListener listener)` Pass in a domain name and corresponding setting, get back a set of InetAddresses asynchronously.
`void`	`query(Network network, String domain, int nsClass, int nsType, int flags, Handler handler, DnsResolver.RawAnswerListener listener)` Pass in a domain name and corresponding setting, get a blob back asynchronously with the entire raw answer.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Constants

CLASS_IN

Added in Android Q

public static final int CLASS_IN

Constant Value: 1 (0x00000001)

FLAG_EMPTY

Added in Android Q

public static final int FLAG_EMPTY

Constant Value: 0 (0x00000000)

FLAG_NO_CACHE_LOOKUP

Added in Android Q

public static final int FLAG_NO_CACHE_LOOKUP

Constant Value: 4 (0x00000004)

FLAG_NO_CACHE_STORE

Added in Android Q

public static final int FLAG_NO_CACHE_STORE

Constant Value: 2 (0x00000002)

FLAG_NO_RETRY

Added in Android Q

public static final int FLAG_NO_RETRY

Constant Value: 1 (0x00000001)

TYPE_A

Added in Android Q

public static final int TYPE_A

Constant Value: 1 (0x00000001)

TYPE_AAAA

Added in Android Q

public static final int TYPE_AAAA

Constant Value: 28 (0x0000001c)

Public methods

getInstance

Added in Android Q

public static DnsResolver getInstance ()

Get instance for DnsResolver

Returns
`DnsResolver`

query

Added in Android Q

public void query (Network network, 
                byte[] query, 
                int flags, 
                Handler handler, 
                DnsResolver.RawAnswerListener listener)

Pass in a blob and corresponding setting, get a blob back asynchronously with the entire raw answer.

Parameters
`network`	`Network`: `Network` specifying which network for querying. `null` for query on default network. This value may be `null`.
`query`	`byte`: blob message This value must never be `null`.
`flags`	`int`: flags as a combination of the FLAGS_* constants Value is `FLAG_EMPTY`, `FLAG_NO_RETRY`, `FLAG_NO_CACHE_STORE`, or `FLAG_NO_CACHE_LOOKUP`
`handler`	`Handler`: `Handler` to specify the thread upon which the `RawAnswerListener` will be invoked. This value must never be `null`.
`listener`	`DnsResolver.RawAnswerListener`: a `RawAnswerListener` which will be called to notify the caller of the result of dns query. This value must never be `null`.

Throws
`ErrnoException`

query

Added in Android Q

public void query (Network network, 
                String domain, 
                int flags, 
                Handler handler, 
                DnsResolver.InetAddressAnswerListener listener)

Pass in a domain name and corresponding setting, get back a set of InetAddresses asynchronously.

Parameters
`network`	`Network`: `Network` specifying which network for querying. `null` for query on default network. This value may be `null`.
`domain`	`String`: domain name for querying This value must never be `null`.
`flags`	`int`: flags as a combination of the FLAGS_* constants Value is `FLAG_EMPTY`, `FLAG_NO_RETRY`, `FLAG_NO_CACHE_STORE`, or `FLAG_NO_CACHE_LOOKUP`
`handler`	`Handler`: `Handler` to specify the thread upon which the `InetAddressAnswerListener` will be invoked. This value must never be `null`.
`listener`	`DnsResolver.InetAddressAnswerListener`: an `InetAddressAnswerListener` which will be called to notify the caller of the result of dns query. This value must never be `null`.

Throws
`ErrnoException`

query

Added in Android Q

public void query (Network network, 
                String domain, 
                int nsClass, 
                int nsType, 
                int flags, 
                Handler handler, 
                DnsResolver.RawAnswerListener listener)

Pass in a domain name and corresponding setting, get a blob back asynchronously with the entire raw answer.

Parameters
`network`	`Network`: `Network` specifying which network for querying. `null` for query on default network. This value may be `null`.
`domain`	`String`: domain name for querying This value must never be `null`.
`nsClass`	`int`: dns class as one of the CLASS_* constants Value is `CLASS_IN`
`nsType`	`int`: dns resource record (RR) type as one of the TYPE_* constants Value is `TYPE_A`, or `TYPE_AAAA`
`flags`	`int`: flags as a combination of the FLAGS_* constants Value is `FLAG_EMPTY`, `FLAG_NO_RETRY`, `FLAG_NO_CACHE_STORE`, or `FLAG_NO_CACHE_LOOKUP`
`handler`	`Handler`: `Handler` to specify the thread upon which the `RawAnswerListener` will be invoked. This value must never be `null`.
`listener`	`DnsResolver.RawAnswerListener`: a `RawAnswerListener` which will be called to notify the caller of the result of dns query. This value must never be `null`.

Throws
`ErrnoException`

DnsResolver

Summary

Nested classes

Constants

Public methods

Inherited methods

Constants

CLASS_IN

FLAG_EMPTY

FLAG_NO_CACHE_LOOKUP

FLAG_NO_CACHE_STORE

FLAG_NO_RETRY

TYPE_A

TYPE_AAAA

Public methods

getInstance

query

query

query