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### Description
Using a malformed RLP packet, we crash the discovery service of Teku permanently.
### Attack scenario
* We identify the public key of a Teku node, from which we compute its nodeId…
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Hi,I tried to deploy erc1400 contract in ropsten testnetwork.I successfully connected with ropsten testnet but when i tried to deploy the contract using web3j ,it shows "Zero length biginteger" error.…
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Hi,
I had been struggling with Subscription from a long time. The socket disconnects randomly within few minute to few hours. Had gone through a similar issue here which was dated back to 2018, an…
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```
org.web3j.protocol.exceptions.ClientConnectionException: Invalid response received: 400; {
"jsonrpc" : "2.0",
"id" : 3225,
"error" : {
"code" : -50100,
"message" : "Unable to d…
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I am getting an exception on Android when trying to generate a new light wallet using 4.1.0-android. This is code that previously used to work:
`this.fileName = WalletUtils.generateLightNewWalletFi…
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```
// send transaction
final CompletableFuture transFuture = new CompletableFuture();
sendMessage(web3j, signMsg, transFuture);
TransactionReceipt receipt =
…
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I am using Solc v0.6.9 and we I generate the Java code I am getting the incorrect return type for a few of my ERC20 smart contract functions (e.g., balanceOf).
**ERC20 balanceOf function (Solidity …
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https://camel.apache.org/components/latest/web3j-component.html
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预编译合约的Service的交易回值和返回值对于错误处理不方便，即PrecompiledCommon.java中`handleTransactionReceit(TransactionReceipt, Web3j)`方法，当预编译执行错误时，返回的不是一个(code,msg)的response实体类对象，而是一个String对象。二次开发时只能自己复制实现一次`handleTransactionR…
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The public transaction gas usage is calculated in the following way:
Gas usage = TX_BASE_COST + (TX_DATA_ZERO * NO_OF_ZEROS) + (TX_DATA_NON_ZERO * NO_OF_NON_ZEROS)
where,
TX_BASE_COST = 21000…