package org.web3j.example.transactions;
import java.io.IOException;
import java.math.BigInteger;
import org.web3j.crypto.Credentials;
import org.web3j.crypto.KlayCredentials;
import org.web3j.crypto.KlayRawTransaction;
import org.web3j.crypto.KlayTransactionEncoder;
import org.web3j.crypto.RawTransaction;
import org.web3j.protocol.core.DefaultBlockParameterName;
import org.web3j.protocol.core.methods.response.EthChainId;
import org.web3j.protocol.core.methods.response.EthSendTransaction;
import org.web3j.protocol.http.HttpService;
import org.web3j.protocol.kaia.Web3j;
import org.web3j.utils.Numeric;
import org.web3j.protocol.kaia.core.method.response.TransactionReceipt;
import org.web3j.tx.response.PollingTransactionReceiptProcessor;
import org.web3j.tx.response.TransactionReceiptProcessor;
import org.web3j.example.keySample;
public class LegacyExample implements keySample {
public static void run() throws Exception {
Web3j web3j = Web3j.build(new HttpService(keySample.BAOBAB_URL));
KlayCredentials klaycredentials = KlayCredentials.create(keySample.LEGACY_KEY_privkey);
Credentials credentials = Credentials.create(LEGACY_KEY_privkey);
BigInteger GAS_PRICE = BigInteger.valueOf(50000000000L);
BigInteger GAS_LIMIT = BigInteger.valueOf(6721950);
String from = credentials.getAddress();
String to = "0x000000000000000000000000000000000000dead";
EthChainId EthchainId = web3j.ethChainId().send();
long chainId = EthchainId.getChainId().longValue();
BigInteger nonce = web3j.ethGetTransactionCount(from, DefaultBlockParameterName.LATEST).send()
BigInteger value = BigInteger.valueOf(100);
// send legacy transaction with web3j-credentials
RawTransaction raw = KlayRawTransaction.createEtherTransaction(
byte[] signedMessage = KlayTransactionEncoder.signMessage(raw, chainId, credentials);
String hexValue = Numeric.toHexString(signedMessage);
EthSendTransaction transactionResponse = web3j.ethSendRawTransaction(hexValue).send();
System.out.println(transactionResponse.getResult());
// send legacy transaction with web3j-ext klaycredentials
raw = KlayRawTransaction.createEtherTransaction(
signedMessage = KlayTransactionEncoder.signMessage(raw, chainId, klaycredentials);
hexValue = Numeric.toHexString(signedMessage);
transactionResponse = web3j.ethSendRawTransaction(hexValue).send();
System.out.println("TxHash : \n " + transactionResponse.getResult());
String txHash = transactionResponse.getResult();
int DEFAULT_POLLING_ATTEMPTS_PER_TX_HASH = 40;
int DEFAULT_BLOCK_TIME = 1 * 1000;
long DEFAULT_POLLING_FREQUENCY = DEFAULT_BLOCK_TIME;
TransactionReceiptProcessor transactionReceiptProcessor = new PollingTransactionReceiptProcessor(web3j,
DEFAULT_POLLING_FREQUENCY, DEFAULT_POLLING_ATTEMPTS_PER_TX_HASH);
org.web3j.protocol.core.methods.response.TransactionReceipt ethReceipt = transactionReceiptProcessor
.waitForTransactionReceipt(txHash);
System.out.println("Receipt from eth_getTransactionReceipt : \n" + ethReceipt);
TransactionReceipt receipt = web3j.klayGetTransactionReceipt(txHash).send().getResult();
System.out.println("Receipt from klay_getTransactionReceipt : \n" + receipt);