DnsClient (Vert.x Stack - Docs 3.9.16 API)

java.lang.Object
- io.vertx.rxjava.core.dns.DnsClient

```
public class DnsClient
extends Object
```
Provides a way to asynchronously lookup information from DNS servers.
Please consult the documentation for more information on DNS clients.
NOTE: This class has been automatically generated from the original non RX-ified interface using Vert.x codegen.

Field Summary

Fields
Modifier and Type Field and Description

static io.vertx.lang.rx.TypeArg<DnsClient> __TYPE_ARG

Fields
Modifier and Type	Field and Description
`static io.vertx.lang.rx.TypeArg<DnsClient>`	`__TYPE_ARG`

Constructor Summary

Constructors
Constructor and Description

DnsClient(DnsClient delegate)

DnsClient(Object delegate)

Constructors
Constructor and Description
`DnsClient(DnsClient delegate)`
`DnsClient(Object delegate)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)`
`DnsClient`	`getDelegate()`
`int`	`hashCode()`
`DnsClient`	`lookup(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name.
`DnsClient`	`lookup4(String name, Handler<AsyncResult<String>> handler)` Try to lookup the A (ipv4) record for the given name.
`Observable<String>`	`lookup4Observable(String name)` Deprecated. use `rxLookup4(java.lang.String)` instead
`DnsClient`	`lookup6(String name, Handler<AsyncResult<String>> handler)` Try to lookup the AAAA (ipv6) record for the given name.
`Observable<String>`	`lookup6Observable(String name)` Deprecated. use `rxLookup6(java.lang.String)` instead
`Observable<String>`	`lookupObservable(String name)` Deprecated. use `rxLookup(java.lang.String)` instead
`static DnsClient`	`newInstance(DnsClient arg)`
`DnsClient`	`resolveA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all A (ipv4) records for the given name.
`DnsClient`	`resolveAAAA(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve all AAAA (ipv6) records for the given name.
`Observable<List<String>>`	`resolveAAAAObservable(String name)` Deprecated. use `rxResolveAAAA(java.lang.String)` instead
`Observable<List<String>>`	`resolveAObservable(String name)` Deprecated. use `rxResolveA(java.lang.String)` instead
`DnsClient`	`resolveCNAME(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the CNAME record for the given name.
`Observable<List<String>>`	`resolveCNAMEObservable(String name)` Deprecated. use `rxResolveCNAME(java.lang.String)` instead
`DnsClient`	`resolveMX(String name, Handler<AsyncResult<List<MxRecord>>> handler)` Try to resolve the MX records for the given name.
`Observable<List<MxRecord>>`	`resolveMXObservable(String name)` Deprecated. use `rxResolveMX(java.lang.String)` instead
`DnsClient`	`resolveNS(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the NS records for the given name.
`Observable<List<String>>`	`resolveNSObservable(String name)` Deprecated. use `rxResolveNS(java.lang.String)` instead
`DnsClient`	`resolvePTR(String name, Handler<AsyncResult<String>> handler)` Try to resolve the PTR record for the given name.
`Observable<String>`	`resolvePTRObservable(String name)` Deprecated. use `rxResolvePTR(java.lang.String)` instead
`DnsClient`	`resolveSRV(String name, Handler<AsyncResult<List<SrvRecord>>> handler)` Try to resolve the SRV records for the given name.
`Observable<List<SrvRecord>>`	`resolveSRVObservable(String name)` Deprecated. use `rxResolveSRV(java.lang.String)` instead
`DnsClient`	`resolveTXT(String name, Handler<AsyncResult<List<String>>> handler)` Try to resolve the TXT records for the given name.
`Observable<List<String>>`	`resolveTXTObservable(String name)` Deprecated. use `rxResolveTXT(java.lang.String)` instead
`DnsClient`	`reverseLookup(String ipaddress, Handler<AsyncResult<String>> handler)` Try to do a reverse lookup of an IP address.
`Observable<String>`	`reverseLookupObservable(String ipaddress)` Deprecated. use `rxReverseLookup(java.lang.String)` instead
`Single<String>`	`rxLookup(String name)` Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name.
`Single<String>`	`rxLookup4(String name)` Try to lookup the A (ipv4) record for the given name.
`Single<String>`	`rxLookup6(String name)` Try to lookup the AAAA (ipv6) record for the given name.
`Single<List<String>>`	`rxResolveA(String name)` Try to resolve all A (ipv4) records for the given name.
`Single<List<String>>`	`rxResolveAAAA(String name)` Try to resolve all AAAA (ipv6) records for the given name.
`Single<List<String>>`	`rxResolveCNAME(String name)` Try to resolve the CNAME record for the given name.
`Single<List<MxRecord>>`	`rxResolveMX(String name)` Try to resolve the MX records for the given name.
`Single<List<String>>`	`rxResolveNS(String name)` Try to resolve the NS records for the given name.
`Single<String>`	`rxResolvePTR(String name)` Try to resolve the PTR record for the given name.
`Single<List<SrvRecord>>`	`rxResolveSRV(String name)` Try to resolve the SRV records for the given name.
`Single<List<String>>`	`rxResolveTXT(String name)` Try to resolve the TXT records for the given name.
`Single<String>`	`rxReverseLookup(String ipaddress)` Try to do a reverse lookup of an IP address.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - __TYPE_ARG
```
public static final io.vertx.lang.rx.TypeArg<DnsClient> __TYPE_ARG
```
- Constructor Detail
  - DnsClient
```
public DnsClient(DnsClient delegate)
```
  - DnsClient
```
public DnsClient(Object delegate)
```
- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - getDelegate
```
public DnsClient getDelegate()
```
  - lookup
```
public DnsClient lookup(String name,
                        Handler<AsyncResult<String>> handler)
```
    Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    handler - the Handler to notify with the AsyncResult. The handler will get notified with the resolved address if a record was found. If non was found it will get notifed with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - lookupObservable
```
@Deprecated
public Observable<String> lookupObservable(String name)
```
    Deprecated. use rxLookup(java.lang.String) instead
    
    Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - rxLookup
```
public Single<String> rxLookup(String name)
```
    Try to lookup the A (ipv4) or AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - lookup4
```
public DnsClient lookup4(String name,
                         Handler<AsyncResult<String>> handler)
```
    Try to lookup the A (ipv4) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    handler - the to notify with the AsyncResult. The handler will get notified with the resolved Inet4Address if a record was found. If non was found it will get notifed with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - lookup4Observable
```
@Deprecated
public Observable<String> lookup4Observable(String name)
```
    Deprecated. use rxLookup4(java.lang.String) instead
    
    Try to lookup the A (ipv4) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - rxLookup4
```
public Single<String> rxLookup4(String name)
```
    Try to lookup the A (ipv4) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - lookup6
```
public DnsClient lookup6(String name,
                         Handler<AsyncResult<String>> handler)
```
    Try to lookup the AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    handler - the to notify with the . The handler will get notified with the resolved Inet6Address if a record was found. If non was found it will get notifed with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - lookup6Observable
```
@Deprecated
public Observable<String> lookup6Observable(String name)
```
    Deprecated. use rxLookup6(java.lang.String) instead
    
    Try to lookup the AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - rxLookup6
```
public Single<String> rxLookup6(String name)
```
    Try to lookup the AAAA (ipv6) record for the given name. The first found will be used.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - resolveA
```
public DnsClient resolveA(String name,
                          Handler<AsyncResult<List<String>>> handler)
```
    Try to resolve all A (ipv4) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    handler - the Handler to notify with the AsyncResult. The handler will get notified with a List that contains all the resolved Inet4Addresses. If none was found an empty List will be used. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - resolveAObservable
```
@Deprecated
public Observable<List<String>> resolveAObservable(String name)
```
    Deprecated. use rxResolveA(java.lang.String) instead
    
    Try to resolve all A (ipv4) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - rxResolveA
```
public Single<List<String>> rxResolveA(String name)
```
    Try to resolve all A (ipv4) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - resolveAAAA
```
public DnsClient resolveAAAA(String name,
                             Handler<AsyncResult<List<String>>> handler)
```
    Try to resolve all AAAA (ipv6) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    handler - the Handler to notify with the AsyncResult. The handler will get notified with a List that contains all the resolved Inet6Addresses. If none was found an empty List will be used. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - resolveAAAAObservable
```
@Deprecated
public Observable<List<String>> resolveAAAAObservable(String name)
```
    Deprecated. use rxResolveAAAA(java.lang.String) instead
    
    Try to resolve all AAAA (ipv6) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - rxResolveAAAA
```
public Single<List<String>> rxResolveAAAA(String name)
```
    Try to resolve all AAAA (ipv6) records for the given name.
    
    Parameters:
    
    name - the name to resolve
    
    Returns:
    
    a reference to this, so the API can be used fluently
  - resolveCNAME
```
public DnsClient resolveCNAME(String name,
                              Handler<AsyncResult<List<String>>> handler)
```
    Try to resolve the CNAME record for the given name.
    
    Parameters:
    
    name - the name to resolve the CNAME for
    
    handler - the to notify with the . The handler will get notified with the resolved String if a record was found. If none was found it will get notified with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveCNAMEObservable
```
@Deprecated
public Observable<List<String>> resolveCNAMEObservable(String name)
```
    Deprecated. use rxResolveCNAME(java.lang.String) instead
    
    Try to resolve the CNAME record for the given name.
    
    Parameters:
    
    name - the name to resolve the CNAME for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolveCNAME
```
public Single<List<String>> rxResolveCNAME(String name)
```
    Try to resolve the CNAME record for the given name.
    
    Parameters:
    
    name - the name to resolve the CNAME for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveMX
```
public DnsClient resolveMX(String name,
                           Handler<AsyncResult<List<MxRecord>>> handler)
```
    Try to resolve the MX records for the given name.
    
    Parameters:
    
    name - the name for which the MX records should be resolved
    
    handler - the Handler to notify with the AsyncResult. The handler will get notified with a List that contains all resolved MxRecords, sorted by their MxRecord.priority(). If non was found it will get notified with an empty List. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveMXObservable
```
@Deprecated
public Observable<List<MxRecord>> resolveMXObservable(String name)
```
    Deprecated. use rxResolveMX(java.lang.String) instead
    
    Try to resolve the MX records for the given name.
    
    Parameters:
    
    name - the name for which the MX records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolveMX
```
public Single<List<MxRecord>> rxResolveMX(String name)
```
    Try to resolve the MX records for the given name.
    
    Parameters:
    
    name - the name for which the MX records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveTXT
```
public DnsClient resolveTXT(String name,
                            Handler<AsyncResult<List<String>>> handler)
```
    Try to resolve the TXT records for the given name.
    
    Parameters:
    
    name - the name for which the TXT records should be resolved
    
    handler - the to notify with the . The handler will get notified with a List that contains all resolved Strings. If none was found it will get notified with an empty List. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveTXTObservable
```
@Deprecated
public Observable<List<String>> resolveTXTObservable(String name)
```
    Deprecated. use rxResolveTXT(java.lang.String) instead
    
    Try to resolve the TXT records for the given name.
    
    Parameters:
    
    name - the name for which the TXT records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolveTXT
```
public Single<List<String>> rxResolveTXT(String name)
```
    Try to resolve the TXT records for the given name.
    
    Parameters:
    
    name - the name for which the TXT records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolvePTR
```
public DnsClient resolvePTR(String name,
                            Handler<AsyncResult<String>> handler)
```
    Try to resolve the PTR record for the given name.
    
    Parameters:
    
    name - the name to resolve the PTR for
    
    handler - the to notify with the . The handler will get notified with the resolved String if a record was found. If none was found it will get notified with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolvePTRObservable
```
@Deprecated
public Observable<String> resolvePTRObservable(String name)
```
    Deprecated. use rxResolvePTR(java.lang.String) instead
    
    Try to resolve the PTR record for the given name.
    
    Parameters:
    
    name - the name to resolve the PTR for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolvePTR
```
public Single<String> rxResolvePTR(String name)
```
    Try to resolve the PTR record for the given name.
    
    Parameters:
    
    name - the name to resolve the PTR for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveNS
```
public DnsClient resolveNS(String name,
                           Handler<AsyncResult<List<String>>> handler)
```
    Try to resolve the NS records for the given name.
    
    Parameters:
    
    name - the name for which the NS records should be resolved
    
    handler - the to notify with the . The handler will get notified with a List that contains all resolved Strings. If none was found it will get notified with an empty List. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveNSObservable
```
@Deprecated
public Observable<List<String>> resolveNSObservable(String name)
```
    Deprecated. use rxResolveNS(java.lang.String) instead
    
    Try to resolve the NS records for the given name.
    
    Parameters:
    
    name - the name for which the NS records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolveNS
```
public Single<List<String>> rxResolveNS(String name)
```
    Try to resolve the NS records for the given name.
    
    Parameters:
    
    name - the name for which the NS records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveSRV
```
public DnsClient resolveSRV(String name,
                            Handler<AsyncResult<List<SrvRecord>>> handler)
```
    Try to resolve the SRV records for the given name.
    
    Parameters:
    
    name - the name for which the SRV records should be resolved
    
    handler - the to notify with the . The handler will get notified with a List that contains all resolved SrvRecords. If none was found it will get notified with an empty List. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - resolveSRVObservable
```
@Deprecated
public Observable<List<SrvRecord>> resolveSRVObservable(String name)
```
    Deprecated. use rxResolveSRV(java.lang.String) instead
    
    Try to resolve the SRV records for the given name.
    
    Parameters:
    
    name - the name for which the SRV records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxResolveSRV
```
public Single<List<SrvRecord>> rxResolveSRV(String name)
```
    Try to resolve the SRV records for the given name.
    
    Parameters:
    
    name - the name for which the SRV records should be resolved
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - reverseLookup
```
public DnsClient reverseLookup(String ipaddress,
                               Handler<AsyncResult<String>> handler)
```
    Try to do a reverse lookup of an IP address. This is basically the same as doing trying to resolve a PTR record but allows you to just pass in the IP address and not a valid ptr query string.
    
    Parameters:
    
    ipaddress - the IP address to resolve the PTR for
    
    handler - the to notify with the . The handler will get notified with the resolved String if a record was found. If none was found it will get notified with null. If an error accours it will get failed.
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - reverseLookupObservable
```
@Deprecated
public Observable<String> reverseLookupObservable(String ipaddress)
```
    Deprecated. use rxReverseLookup(java.lang.String) instead
    
    Try to do a reverse lookup of an IP address. This is basically the same as doing trying to resolve a PTR record but allows you to just pass in the IP address and not a valid ptr query string.
    
    Parameters:
    
    ipaddress - the IP address to resolve the PTR for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - rxReverseLookup
```
public Single<String> rxReverseLookup(String ipaddress)
```
    Try to do a reverse lookup of an IP address. This is basically the same as doing trying to resolve a PTR record but allows you to just pass in the IP address and not a valid ptr query string.
    
    Parameters:
    
    ipaddress - the IP address to resolve the PTR for
    
    Returns:
    
    a reference to this, so the API can be used fluently.
  - newInstance
```
public static DnsClient newInstance(DnsClient arg)
```

Class DnsClient

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

__TYPE_ARG

Constructor Detail

DnsClient

DnsClient

Method Detail

toString

equals

hashCode

getDelegate

lookup

lookupObservable

rxLookup

lookup4

lookup4Observable

rxLookup4

lookup6

lookup6Observable

rxLookup6

resolveA

resolveAObservable

rxResolveA

resolveAAAA

resolveAAAAObservable

rxResolveAAAA

resolveCNAME

resolveCNAMEObservable

rxResolveCNAME

resolveMX

resolveMXObservable

rxResolveMX

resolveTXT

resolveTXTObservable

rxResolveTXT

resolvePTR

resolvePTRObservable

rxResolvePTR

resolveNS

resolveNSObservable

rxResolveNS

resolveSRV

resolveSRVObservable

rxResolveSRV

reverseLookup

reverseLookupObservable

rxReverseLookup

newInstance