Resolver

The Resolver contract handles the resolution between the name domain and the resource. Each Registry entry references a Resolver. Use one of our resolvers, the Multi-Crypto Resolver, or the Rootstock Resolver.

Index

• Structure

• Methods

  • supportsinterface
  • addr
  • setAddr

• Events

  • AddrChanged

Structure

Context

AbstractRNS rns;

• rns: the Registry contract

Storage

mapping(bytes32=>address) addresses;
mapping(bytes32=>bytes32) hashes;

• adresses: for each namehash entry, stores an address
• hashes: for each namehash entry, stores a hash

Methods

supportsInterface

Returns true if the resolver implements the interface specified by the provided hash.

This Resolver supports

• 0x3b3b57de = sha3(addr(bytes32))
• 0xd8389dc5 = sha3(content(bytes32))

Signature

function supportsInterface(bytes4 interfaceID) public pure returns (bool)

Parameters

• interfaceID: the ID of the interface to check for.

Returns

• bool: true if the contract implements the requested interface.

addr

Returns the address associated with an RNS node.

Signature

function addr(bytes32 node) public view returns (address)

Parameters

• node: the RNS node to query.

Returns

• bool: the associated address.

setAddr

Sets the address associated with an RNS node. May only be called by the owner of that node in the RNS registry.

Signature

function setAddr(bytes32 node, address addrValue) public only_owner(node)

Parameters

• node: the node to update.
• addrValue: the address to set.

Events

AddrChanged

This events should be fired when the method setAddr is sucessfully called and has to propagate the information:

• node: the node to update.
• addrValue: the address to set.