[Ethereum] what arguments does the sendTransaction function take

cpp-ethereumgo-ethereumtransactionsweb3js

I have set up my private blockchain using geth and am using web3 to call different methods. I have successfully created new accounts from the web browser and can view all addresses and the balances. Next i am trying to send some ether from one account to the other.

In javascript I have

acc1 = web3.eth.accounts[0];  
acc2 = web3.eth.accounts[1];   
web3.eth.sendTransaction({from: acc1, to: acc2, Value: 1})

I encounter an error as follows
Error: invalid argument 0: cannot unmarshal non-string as hex data

Has anyone faced this?

Best Answer

It's not going to like the big "V" because it's case-sensitive.

Here's a reference to the whole list:

https://github.com/ethereum/wiki/wiki/JavaScript-API#web3ethsendtransaction

Hope it helps.

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[Ethereum] Uncaught Error: could not decode, json: cannot unmarshal array into Go value of type string(…)

I've found what i was doing wrong in my deploy process and why accessing the contract after creation with possible but would throw the error with the address.

Turns out this is not the contract ABI :

var currencyContract = web3.eth.contract([{"constant":false,"inputs":[{"name":"_addr","type":"address"}],"name":"disapprove","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"_target","type":"address"},{"name":"_proxy","type":"address"}],"name":"isApprovedOnceFor","outputs":[{"name":"_r","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[{"name":"_proxy","type":"address"}],"name":"isApproved","outputs":[{"name":"_r","type":"bool"}],"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"},{"name":"_to","type":"address"}],"name":"sendCoinFrom","outputs":[{"name":"_success","type":"bool"}],"type":"function"},{"constant":false,"inputs":[{"name":"_addr","type":"address"},{"name":"_maxValue","type":"uint256"}],"name":"approveOnce","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"_addr","type":"address"}],"name":"coinBalanceOf","outputs":[{"name":"_r","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"},{"name":"_to","type":"address"}],"name":"sendCoin","outputs":[{"name":"_success","type":"bool"}],"type":"function"},{"constant":true,"inputs":[],"name":"coinBalance","outputs":[{"name":"_r","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[{"name":"_addr","type":"address"}],"name":"approve","outputs":[],"type":"function"},{"inputs":[],"type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":true,"name":"to","type":"address"}],"name":"CoinSent","type":"event"}]);

So the fix the issue i had to do :

var MyContract = web3.eth.contract(currencyContract.abi);

MyContract.at("0xADDRESS")

Web3.js Invalid Nonce – Handling Transactions with Invalid Nonce

This 'Transaction w/ invalid nonce' was a problem on Geth/v1.5.0-unstable/linux/go1.5.1

On Geth/v1.4.9-stable/linux/go1.5.1 works fine.

The solution:

sudo apt-get autoremove ethereum geth # Geth/v1.5.0-unstable/linux/go1.5.1
sudo add-apt-repository -r ppa:ethereum/ethereum-dev # Geth/v1.5.0-unstable/linux/go1.5.1 
sudo apt-get update && sudo apt-get install ethereum # Geth/v1.4.9-stable/linux/go1.5.1

Best Answer

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Web3.js Invalid Nonce – Handling Transactions with Invalid Nonce

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