Package org.web3j.ens

Class EnsResolver

java.lang.Object

org.web3j.ens.EnsResolver

public class EnsResolver
extends Object

Resolution logic for contract addresses. According to https://eips.ethereum.org/EIPS/eip-2544

Field Summary

Fields

Modifier and Type	Field	Description
static final long	DEFAULT_SYNC_THRESHOLD
static final int	LOOKUP_LIMIT
static final String	REVERSE_NAME_SUFFIX

Constructor Summary

Constructors

Constructor	Description
EnsResolver(Web3j web3j)
EnsResolver(Web3j web3j, long syncThreshold)
EnsResolver(Web3j web3j, long syncThreshold, int addressLength)

Method Summary

Modifier and Type	Method	Description
protected okhttp3.Request	buildRequest(String url, String sender, String data)
protected String	ccipReadFetch(List<String> urls, String sender, String data)
long	getSyncThreshold()
static boolean	isValidEnsName(String input)
static boolean	isValidEnsName(String input, int addressLength)
protected OffchainResolverContract	obtainOffchainResolver(String ensName)	Provides an access to a valid offchain resolver in order to access other API methods.
protected PublicResolver	obtainPublicResolver(String ensName)	Deprecated. Use obtainOffchainResolver(String) instead.
String	resolve(String ensName)	Returns the address of the resolver for the specified node.
protected String	resolveOffchain(String lookupData, OffchainResolverContract resolver, int lookupCounter)
String	reverseResolve(String address)	Reverse name resolution as documented in the specification.
void	setHttpClient(okhttp3.OkHttpClient client)
void	setSyncThreshold(long syncThreshold)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_SYNC_THRESHOLD

public static final long DEFAULT_SYNC_THRESHOLD

See Also:

• Constant Field Values

LOOKUP_LIMIT

public static final int LOOKUP_LIMIT

See Also:

• Constant Field Values

REVERSE_NAME_SUFFIX

public static final String REVERSE_NAME_SUFFIX

See Also:

• Constant Field Values

Constructor Details

EnsResolver

public EnsResolver(Web3j web3j,
 long syncThreshold,
 int addressLength)

EnsResolver

public EnsResolver(Web3j web3j,
 long syncThreshold)

EnsResolver

public EnsResolver(Web3j web3j)

Method Details

setSyncThreshold

public void setSyncThreshold(long syncThreshold)

getSyncThreshold

public long getSyncThreshold()

obtainPublicResolver

@Deprecated
protected PublicResolver obtainPublicResolver(String ensName)

Deprecated.

Use obtainOffchainResolver(String) instead.

Provides an access to a valid public resolver in order to access other API methods.

Parameters:

ensName - our user input ENS name

Returns:

PublicResolver

obtainOffchainResolver

protected OffchainResolverContract obtainOffchainResolver(String ensName)

Provides an access to a valid offchain resolver in order to access other API methods.

Parameters:

ensName - our user input ENS name

Returns:

OffchainResolver

resolve

public String resolve(String ensName)

Returns the address of the resolver for the specified node.

Parameters:

ensName - The specified node.

Returns:

address of the resolver.

resolveOffchain

protected String resolveOffchain(String lookupData,
 OffchainResolverContract resolver,
 int lookupCounter)
                          throws Exception

Throws:

Exception

ccipReadFetch

protected String ccipReadFetch(List<String> urls,
 String sender,
 String data)

buildRequest

protected okhttp3.Request buildRequest(String url,
 String sender,
 String data)
                                throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

reverseResolve

public String reverseResolve(String address)

Reverse name resolution as documented in the specification.

Parameters:

address - an ethereum address, example: "0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e"

Returns:

a EnsName registered for provided address

isValidEnsName

public static boolean isValidEnsName(String input)

isValidEnsName

public static boolean isValidEnsName(String input,
 int addressLength)

setHttpClient

public void setHttpClient(okhttp3.OkHttpClient client)