ICO Transfer without MetaMask plugin Web3js

[Alex Brend]

I want to transfer ICO tokens in test environment from one ETH account to another using Web3js. But it gives service provider not found issue.

It works when I use a local node but not when I use ropsten network.

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[devonneburger7]

Are you using Infura?

If not you can run your local node and specify your chain using --chain ropsten

[Alex Brend]

Are you using Infura?

If not you can run your local node and specify your chain using --chain ropsten

I am using infura ropsten and want to use this not local node at the moment. But I do not want to use MetaMask plugin. Is this possible? I am getting provider not found error.

[devonneburger7]

You dont have to use Metamask but you will need to sign all your requests or set a defaultAccount.

What is the exact error you are receiving?

[Alex Brend]

You dont have to use Metamask but you will need to sign all your requests or set a defaultAccount.

What is the exact error you are receiving?

I am getting the following error  Invalid JSON RPC response: ""

Here is my code.

Code:

<script>


var Web3 = require('web3');

var web3 = new Web3(new Web3.providers.HttpProvider('https://ropsten.infura.io/875Cngzi6OKdDw19aX8H'));


console.log(web3);

 var OmsCoin = *removed abi*


console.log(OmsCoin);

var address = document.getElementById('address');
var transfer = document.getElementById('transfer');
var disp = document.getElementById('disp');
var tokenAmount = document.getElementById('tokenAmount');

var account = '0x0072c66801e215BffcCd7Aa0A3306dFbb5D05A1B';

var account1 = '0x80198f6f9821775541098b9fC872937e594fC45f';

var decimals;
var token;

    decimals = OmsCoin.decimals.call(function(error,res){
     decimals = res.toNumber();
    //console.log(decimals);
     });


OmsCoin.balanceOf(account, function(error,res){
        token = res.toNumber() / 10**decimals;
        disp.innerHTML= 'Your Token Balance ' + token;
    });
console.log(token);



transfer.addEventListener('click',function(){

/*
OmsCoin.transfer(account1, tokenAmount.value * 10 **decimals, {from:account},function(error,result)
        {
            if(!error)
                  {
                    console.log(tx2 = result);
                    tx2 = result;
                    
                  }
        else
            {
              console.log(error);
            }
        });*/

OmsCoin.transfer(account1, tokenAmount.value * 10 **decimals, {from:account},function(error,result)
        {
            if(!error)
                  {
                    console.log(result);
                    
                  }
        else
            {
              console.log(error.toString());
            }
        });


});


</script>

[devonneburger7]

Using web3js you would need to create a custom provider to set the default account.

Using etherJS you can do something like the following:

Code:

const ethers = require('ethers');
const Wallet = ethers.Wallet;
const Contract = ethers.Contract;
const utils = ethers.utils;
const providers = ethers.providers; 

let network = "ropsten";
let privateKey = "0x3a1076bf45ab87712ad64ccb3b1021.......";
let infuraAPIKey = "XXXXXX";

let provider = new providers.InfuraProvider(network, infuraAPIKey);

let serverWallet = new Wallet(privateKey, provider);

[Quaerat]

Metamask software is the access with the extension of the website visiting to the plug-in device in the metabolism of the visits. I have bridging for the assignmentmasters.co.uk website in the enabling of the accesses to distribute.