Merge pull request #395 from battlmonstr/ot2

Fix ENS.getContentHash to return Data

Author: TonioMacaronio

Sources/web3swift/Utils/ENS/ENS.swift

@@ -148,7 +148,7 @@ public class ENS {
         return result
     }
 
-    public func getContent(forNode node: String) throws -> String {
+    public func getContent(forNode node: String) throws -> Data {
         guard let resolver = try? self.registry.getResolver(forDomain: node) else {
             throw Web3Error.processingError(desc: "Failed to get resolver for domain")
         }

Sources/web3swift/Utils/ENS/ENSResolver.swift

@@ -117,11 +117,11 @@ public extension ENS {
             return result
         }
 
-        func getContentHash(forNode node: String) throws -> String {
+        func getContentHash(forNode node: String) throws -> Data {
             guard let nameHash = NameHash.nameHash(node) else {throw Web3Error.processingError(desc: "Failed to get name hash")}
             guard let transaction = self.resolverContract.read("contenthash", parameters: [nameHash] as [AnyObject], extraData: Data(), transactionOptions: defaultOptions) else {throw Web3Error.transactionSerializationError}
             guard let result = try? transaction.call(transactionOptions: defaultOptions) else {throw Web3Error.processingError(desc: "Can't call transaction")}
-            guard let content = result["0"] as? String else {throw Web3Error.processingError(desc: "Can't get content")}
+            guard let content = result["0"] as? Data else {throw Web3Error.processingError(desc: "Can't get content")}
             return content
         }