Web3js does not connect to TestRPC in localhost

Question

I am simply trying to run web3js in a node console and connect it to a testrpc running in localhost.

I run my testrpc like so:

> ganache-cli
Ganache CLI v6.0.3 (ganache-core: 2.0.2)

Available Accounts
==================
(0) 0x131f68e69281532b0ced46cb5da5a5b8cd676b81
(1) 0xb7f672193eb7653912fdbe623699aa21c5d6a9c7
(2) 0x4b6021ac75768c1872ec10d4da31046f37e64d31
(3) 0x0d1f5030fbca0b6ed939093882e3fd788ddb91c6
(4) 0xb4d33e34e1743b07b2599bc532bcf9583f7019b2                                                                                                                                                                      [16/3254](5) 0x160343f0e731075149608a48aed614328127336f
(6) 0xf0c9c25fa5d496263176c07ea0d73172f8566d4f
(7) 0xffcc8d7d07334fc0af7d027378a20289b708e5be
(8) 0x453fca917e47ed8786a05613c3f3de89d57b3c8f
(9) 0x377a23e76fa9bc0574c30a64df4ca9b186c3976b

Private Keys
==================
(0) 8e79cd0667cf265d7241087af29788a7bbe6e2608b436cfe9f775153b5516f31
(1) c90108c817b0648f7fb7795f5b21c45bd3ba016aefa8dafc0d74d39ff68960ef
(2) bf7b186071640f8e986f2e78edf41643e3e1f8aedbfc51fb9410ad9f2a5d502b                                                                                                                                                 [5/3254](3) f40c6a05337b137cc084991a2743d67bf24d27206ffaba8432864e10edb66860
(4) de0008cef56816baea1f0363e6c9af3a1e69821380d72879fc0e2270cceb2044
(5) 0b73cbb9226ec939084831cb749f198dce80b39057b66c121cbdfc6627994f69
(6) a37f478448aabb7ff895d53165bb74b27c9913a2d7130b9e0cd587915615f08d
(7) 40790b3db911d0e4812a164f1778e2d74c3f79589c4e84ee4a1a6b87e25ad69a
(8) 42536e4ddc80bfb0104a265f94c50e65d2484007a9d56200a409de27d86358f0
(9) 572432cf3dc96494900175b66428a40f107de0a9ff832cce9e8aad2385ae22be

HD Wallet
==================
Mnemonic:      between trust fossil over stand make suffer behind raccoon long engage height
Base HD Path:  m/44'/60'/0'/0/{account_index}

Listening on localhost:8545

This looks all good to me, I then open a tmux session and run the following lines in a simple node cli:

// Load Libraries
  var solc = require("solc");
  var fs = require("fs");
  var Web3 = require("web3");

// Connect Web3 Instance
  var web3 = new Web3(new Web3.providers.HttpProvider(`http://localhost:8545`));

// Global Account Accessors
  var acct1 = web3.eth.accounts[0];

> acct1
undefined

As you can see the value acct1 is empty, when I go back to my tmux session running testrpc, I cannont see the eth_account command which should have been executed.

If I run netstat -tuplen I can indeed see that testrpc is running on port 8545:

tcp6       0      0 :::8545                 :::*                    LISTEN      1000       3431613     50196/node
udp        0      0 0.0.0.0:68              0.0.0.0:*                           0          15715

Answer 1

It looks like there were many changes made in web3 so to now access the accounts you need to use the following:

web3.eth.personal.getAccounts().then(res => console.log(res)) to list all accounts ..... or web3.eth.personal.getAccounts().then(res => console.log(res[0])) to display account[0] etc

Answer 2

Installation and Usage

Clone repository and run

npm install

Then launch the testpc server with

npm run ganache

and from a separate shell

npm run http_server

Then point your browser to http://localhost:8000 for the web version of the voting app.

The server.js file includes the VotingContract setup and deployment. For comparision you should be able to follow the original tutorial to get an idea of what was changed from the pre 1.0 web3 to the 1.0 web3 bindings.

please try it No working and help link Thanks

Answer 3

Try removing the double 'news':

var web3 = new Web3.providers.HttpProvider('http://localhost:8545')