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Questions tagged [decoding]

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1answer
14 views

Encoded input params

I created a simple test contract with a single method: pragma solidity ^0.4.24; contract SimpleTest { function testFunc(string name, bool isFirst) public { //do stuff } } I'm ...
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0answers
64 views

How to decode Tx data? Online tool?

Is there a fast way to decode the data returning from a Smart Contract call? I know there are github projects with JS libraries to decode this kind of data (such as https://github.com/ConsenSys/abi-...
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Anyone with knowledge in org.web3j.abi.Type Decoder?

I am trying to decode a String with this code that I found but I have not been able to do it. String to = inputdata.substring(10, 74); String value = inputdata.substring(74, 138); Method refMethod = ...
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How to decode the input data in java?

I receive the input data as the image shows. And when I try to decode it with the method: String inputdata = null; Optional<Transaction> tx = web3.ethGetTransactionByHash(txHash).send()....
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0answers
35 views

How to decode transfer log data Node

I am trying to decode transfer log to get the addresses to and from, and potentially the value but most important address from and to. const subscribe = () => { subscription = web3.eth....
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30 views

Deserialising bytes to a solidity struct

Say I have a struct like struct AppState { address player1; address player2; uint256 winner; uint256[100] board; uint256 move; } Now I have a function which receives a byte ...
2
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1answer
485 views

How to unpack/decode parameters encoded with web3.eth.abi.encodeParameters in Solidity?

My client app (nodejs) packs some arguments to pass to a smart contracts as bytes _data (similar to ERC223 calls with fallback). I pack the arguments in my JS client like this: const packedArgs = ...