I have a method in my contract that is supposed to reset a list of items.

bytes32[10] public items; 

function reset() {
    items = [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0];

In my app, I reset items before retrieving them using web3:

contract.methods.reset().send({from: my_wallet})
.on('confirmation', confirmation => {
    if (confirmation) return;
    for (var i = 0 ; i < 10 ; ++i) {
            .then( res => console.log(i + " " + res) );

This usually works and I get resetted values. However, 10% of the time I get old values even though my reset transaction has been just confirmed! Furthermore if I check using Parity UI, the values are indeed resetted!

I'm using web3 1.0.0-beta.18 on a private chain with a single node, so there's no propagation time either.

1 Answer 1


Web3.js does nothing here than resting those requests to the node, the confirmation is fired if a receipt is available. I would suggest upgrading to beta.21 and see if that fixes item, as we made a slight iteration, or waiting for confirmation #2

  • Thanks Fabian. I know from experience that confirmation is not fired at the same time as receipt. Also waiting for confirmation #2 means waiting 3 blocks on a single node, makes no sense tbh.
    – d9ngle
    Sep 25, 2017 at 12:07
  • Somebody from the go team has to answer on that, if its the case its not good i agree. Sep 26, 2017 at 13:42

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