All Questions
80 questions with no upvoted or accepted answers
3
votes
1
answer
84
views
for loop containing types.Sender sometimes does not leave and consumes 100% CPU
I have this simplified code here:
signer := types.LatestSignerForChainID(s.ethApiBackend.ChainConfig().ChainID)
log.Info("Before msg generation", "txsLen", len(txs))
msgs := make([]...
- 115
3
votes
2
answers
1k
views
Verified go signature in solidity (EIP712 TypedData)
I am trying to recover the signer of a TypedData message (eip712).
I am able to sign and verify with ethersJS and validate in the contract as well.
With Go, I can sign and verify as well but the ...
- 1,615
3
votes
1
answer
3k
views
How to convert string to type defined by an abi.Type for payload construction?
I am writing a CLI in Go that should faciliate users to be able to make contract function calls from it. This entails generating contract ABIs and providing input parameters to the function arguments ...
- 826
3
votes
0
answers
191
views
Getting error message from require() using golang, and go-ethereum?
From everything I've been able to find, the only way you can get the error message from require() is by using remix which isn't practical for dealing with production issues. Therefore, I'm wondering ...
- 1,593
3
votes
1
answer
1k
views
How to access non-indexed event arguments from Go types.Log?
The Go bindings have a type called Log that has the following fields
type Log struct {
// Consensus fields:
// address of the contract that generated the event
Address common.Address `...
- 131
3
votes
1
answer
2k
views
Encode method signature and parameters using Go-Ethereum
Is there any way to use the Go-Ethereum library to get the string I have to send to JSON RPC to call a contract method. I mean, Go-Ethereum comes with a CLI, so there must be some built-in functions ...
- 803
2
votes
1
answer
125
views
Why is the same set of bytes encoded base58 differently?
I want to generate a bip32 private root key based on bip39 seed. I found an article with python code, copied it to myself and executed it, getting a valid private root key (checked here). Then I wrote ...
- 115
2
votes
0
answers
487
views
Simulate transaction replacement on go-ethereum SimulatedBackend
i'm writing in go-lang and using go-ethereum package to interact with nodes. For testing purposes go-ethereum provides blockhchain simulation via SimulatedBackend (https://github.com/ethereum/go-...
2
votes
0
answers
1k
views
Getting ALL pending tx from txPool
I'm working on top of geth in golang. My first goal would be to stream all pending transactions from the txPool.
The problem is that when I run my script, I can't manage to catch 100% of pending ...
- 21
2
votes
0
answers
215
views
Subscribe to smart contract using go-ethereum
I am trying to subscribe to certain smart contract using go-ethereum.
Here is the example of my function
client, err := ethclient.Dial(config.AppConfig.SmartcontractHost)
if err != nil {
log.Fatal(...
- 203
2
votes
0
answers
468
views
Reading TxPool using GO
Hello I am trying to learn Go and have not been able to figure out how to get pending transactions. I was reading the following link but I am not sure what I should be importing:
https://geth.ethereum....
- 21
2
votes
1
answer
613
views
Problem with deploying the precompiled contract bytecode in genesis.json file
I am trying to add this simple test contract dumb.sol to my genesis.json file.
pragma solidity <0.8.6;
contract Dumb {
string public name;
string public symbol;
constructor() {
...
2
votes
1
answer
305
views
UnhandledPromiseRejectionWarning: Error: nonce generation function failed or private key is invalid in Ganache
In Go I am using go-ethereum to read data from the ethereum smart contract. My smart contract is maintained with truffle.
I am trying to fetch candidate information based on candidate id. I have a ...
- 419
2
votes
0
answers
82
views
How to add or modify account_signTransaction function
In this github.com/ethereum/go-ethereum/accounts/external/backend.go of Ethereum project i see the "account_signTransaction" function and i want to edit or update the logic for this function, where ...
- 19
2
votes
0
answers
1k
views
No contract code at give address
Its a bit of a long question...
I am using Go to deploy a Smart Contract using the following code:
client, err := ethclient.Dial("http://localhost:8545")
if err != nil {
errorhandler.HandleErr(...
- 141
2
votes
1
answer
963
views
Invalid transaction signature on sending transaction
Hello guys I'm having a "Invalid transaction signature." error. Can't get pass this one. Am I missing something?
client, err := ethclient.Dial("path/to/geth.ipc")
if err != nil {
return err
}
ks :...
- 41
2
votes
1
answer
247
views
Transactions Mined Status in Go Lang
I have a private block chain setup. I am calling a smart contract method from Go Lang. I my code in GoLang should wait until the transaction got mined. How I can achieve that.
Regards
AKM
- 321
2
votes
1
answer
695
views
getTransactionByHash function is not available in the go-ethereum package
In have downloaded go-ethereum package and made the private network. I am able to make changes in the code as per my requirement and it is also working fine. However, ethereum_js.go file has the ...
- 201
1
vote
0
answers
96
views
abi: attempting to unmarshal an empty string while arguments are expected
After updating go-etherum from github.com/ethereum/go-ethereum v1.10.22 to v1.13.15
My contracts started printing out error
abi: attempting to unmarshal an empty string while arguments are expected
...
1
vote
0
answers
73
views
Confusion regarding the technical implementation of PoS Consensus Mechanism in custom blockchain? Master Node?
I have been making my own custom blockchain just as a practice for the past few weeks.
The code is available here link to github repo
I have hitherto implemented the Execution Layer, so to speak. I ...
- 41
1
vote
0
answers
17
views
How does MetaMask confirm the trasaction? The workflow of metamask
I'm trying to make interaction between my customized chain and Metamask.
Network is added, and token sending is successful on chain side. But in MM, tx state is still pending. how can I fix that? What'...
- 31
1
vote
0
answers
219
views
($10 ETH Bounty) Base Chain - My submitted transaction is always 2 blocks behind the current block
For some reason whenever I submit my transaction it is always included 2 or more blocks behind the current block. There's an address that always has their transaction included in the same block as the ...
- 31
1
vote
0
answers
447
views
Flashbots - Bundle simulation always reverts
I have a series of transactions I'm trying to bundle in golang.
several of the transactions are signed transactions from a range of different wallets that are not yet submitted to the mempool.
When I ...
- 11
1
vote
0
answers
104
views
Why is the TransactionByHash function in the go-ethereum client unable to return the sender?
I learned how to get the sender's address from this question. JSON-RPC returns a result with a from field, which we can unmarshal in our struct.
But I'm curious why go-ethereum didn't return ...
- 11
1
vote
0
answers
78
views
Point a Go-Ethereum contract instance at a different address
I am running a golang backend that will interact with tens of thousands of deployed contracts that are all the same, just with different addresses (uniswap pools). I am thinking that it would be more ...
- 143
1
vote
1
answer
115
views
How to filter return value from go-ethereum evm runtime.call
I am writing simple solidity code that's will be running inside evm using golang (go-ethereum). I have successfully run the code, but I can't find the right return value of the function.
Test.sol
// ...
- 123
1
vote
1
answer
732
views
Verify Nonce Signature in the backend Golang
I am trying to implement a metamask user authentication flow on BSC.
I managed to get it working on ethereum. The flow is like this.
I've found the code for ethereum on some gist however I am unable ...
- 111
1
vote
1
answer
1k
views
Calling multicall contract using Go
I'm trying to make a multicall using go. The function "aggregate" takes a tuple of "calls" with address and bytes.
"name": "aggregate",
"...
- 11
1
vote
0
answers
642
views
How to add a custom JSON RPC endpoint to geth?
I would like to add custom RPC method to geth. I found this question:
How to add a custom JSON-RPC endpoint to geth?. But it does not work...
What I did:
1. https://github.com/ethereum/go-ethereum
2. ...
- 191
1
vote
0
answers
589
views
Geth: Simulated Backend?
I recently stumbled upon SimulatedBackend struct while browsing the code. I noticed that it has a constructor (i.e. NewSimulatedBackendWithDatabase) which accepts the path to the node's LevelDB, which ...
1
vote
0
answers
274
views
Golang - Help gnosis transaction hash not calculated right
I have been trying to submit a transaction to gnosis rinkeby api but always the server response is that the hash is not correct and suggest's the lazy way which is not safe for what I want to do so I ...
- 11
1
vote
0
answers
403
views
Enhancing geth subscription processing to be able to work with transaction data
I'm thinking to have a geth "extension" that would be working with a Geth subscriptions. I would like to filter over pending transactions.
When I'm searching in the code I can see that I can ...
- 111
1
vote
0
answers
65
views
Expose aditional APIs via Go Geth Ethereum Client
I am asking more experienced Go Geth developers what is the module that is in charge of exposing variables on the Geth Console / RPC.
What I need is to expose the variable containing the addresses in ...
- 143
1
vote
1
answer
894
views
what should golang abi.pack argument looks like compared to solidity function
The following code is a popular solidity ethereum function
function: swapExactETHForTokens(uint256 amountOutMin, address[] path, address to, uint256 deadline)
what should amountOutMin type look like ...
- 21
1
vote
0
answers
72
views
Could Insufficient Funds error mean the signature is incorrect? - using golang and raw transactions
I want to sign a transaction "offline" without using crypto.sign.
The code looks like the following:
unsignedTx := types.NewTransaction(nonce, to, amount, gasLimit, gasPrice, nil)
networkID ...
- 283
1
vote
0
answers
1k
views
How to pull data from DeFi Liquidity Pools
I am relatively new to decentralised development, and apologies in advance if a bit of a dumb question.
I am doing a project where I am looking to download the following data. I am trying to figure ...
1
vote
1
answer
188
views
Plans to migrate go-ethereum to rust-ethereum?
Is anyone planning to migrate go-ethereum to rust-ethereum? Rust with all its features such as zero-cost abstractions, safe memory management, fearless concurrency really outshines Go.
Nathan Aw (...
- 1,954
1
vote
0
answers
83
views
Getting Blockchain Domains From Transaction Hashes
I am compiling a list of some blockchain domains (.eth, .crypto, etc.) and was wondering what would be the best approach.
My strategy is to take something like this:
https://etherscan.io/address/...
- 11
1
vote
0
answers
61
views
Geth's golang contract bindings need "RPC subscription features that are still under review" to process event logs. What are those features?
The documentation for Geth's golang contract bindings start out with
Please note, events are not yet implemented as they need some RPC subscription features that are still under review.
What ...
- 424
1
vote
0
answers
79
views
Retrieving a State_object value on go-ethereum
I have a deployed contract address and I need to query a contract storage value, a token account balance that is stored on a mapping variable:
mapping (address => uint256) balances;
From go-...
1
vote
1
answer
446
views
How can I make new account by JSON-RPC of Go
I'd like to make new account by JSON-RPC.I've checked the wiki of Ethereum, however I could not find out how to do that.
I've found call existed accounts, but it isn't what I want.
eth_accounts
...
- 11
1
vote
0
answers
196
views
Handling EOF when subscribing to Event Logs
I'm trying to subscribe to events logs to handle Transfer(address,address,uint64) events. I've followed this example.
https://github.com/miguelmota/ethereum-development-with-go-book/blob/master/en/...
1
vote
1
answer
298
views
How to parse input data in transaction using go programming language?
I know there are some resolutions about parsing transaction input data, but they don't work with go. I wander if there is any way i can use with abi available.
Specifically, When i receive a ...
- 71
1
vote
0
answers
411
views
How to configure Geth for accepting future transactions without full sync?
I need to monitor a future (also known as pending or unconfirmed) transactions.
First of all, let's start with the source code. In the core/tx_pool.go let's configure logging a little. Replace
log....
- 1,360
1
vote
1
answer
122
views
Need help with start mining(I am getting like this)
I am new to ethereum private blockchain
System information:
geth version:1.8.2 os&version:linux
synopsis: when i tried to connect peers to my private blockchain it showing like
WARN [03-20|11:...
- 11
1
vote
0
answers
272
views
How to calculate difficulty (int) based on (float)
I am trying to adapt my pool based on github.com/sammy007/open-ethereum-pool to nicehash protocol.
It works more or less and I am receiving shares already, but I ran into the problem with difficulty ...
- 121
1
vote
1
answer
676
views
How do I start to write a function to debug Transaction?
I want to write a program that will do:
for the given txhash debug TraceTransaction and return that
What can i do in Go ?
Do you have any materials, a tutorial or can you give me tips on how to ...
- 129
1
vote
0
answers
212
views
Make Android Command Not Running. (Mobile Go-Ethereum)
Planning to make some modifications to the go-ethereum mobile code,so inorder to do that need to use "make android" command which will create the geth.arr (Manual builds: https://github.com/ethereum/...
- 11
0
votes
1
answer
34
views
How to encode transaction hash argument in go ethclient CallContext
I am trying to call debug_traceTransaction in go by doing:
cl, err := ethclient.Dial("http://localhost:8545")
if err != nil {
panic("Failed starting")
}
txnHash := common....
- 428
0
votes
0
answers
43
views
go -ethereum abi: cannot marshal in to go type: length insufficient 640 require 8225"
Im trying to decode a struct which basically is a tuple where i have this byte of data and passing the byte of data it will be able to be decoded into a struct in Go. My goal here is trying to create ...
