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I followed a tutorial about how to connect web3 with ethereum networks. I registered in infura.io and get all the urls. But when I try to connect to any network it is not connecting.When I print web3 connection status is always false. Below is my code and I use 1.0.0-beta.34 of web3

web3 = new Web3(new Web3.providers.HttpProvider('https://rinkeby.infura.io/v3/MY_API_KEY'));
web3.eth.net.getNetworkType(function(err, res){
     console.log("Network Type: "+res); //Displaying undefined
});

I tried with main net, ropsten and kovan. All are displaying undefined. I don't know what is the problem here. All example in web are showing these lines only. Can some one help me to solve this? Thank you.

| improve this question | |
  • v3 is a new end-point? my infura url doesn't have v3 like yours – Ha ĐANG Aug 28 '18 at 10:32
  • day before yesterday only I registered they provided with v3 only. Also I tried with removing v3 but not worked. If you have working code can you share it please. – e.k Aug 28 '18 at 10:34
  • please refer to this by using metamask ethereum.stackexchange.com/questions/28883/… – Ha ĐANG Aug 28 '18 at 10:43
  • My problem is I have to connect it in node js only – e.k Aug 28 '18 at 10:46
  • If your goal is just to get the network type then we can do it in another way – Ha ĐANG Aug 28 '18 at 10:48
1

You should add the web3-net into your dependencies libs also and then it will work properly

  "dependencies": {
    "web3": "1.0.0-beta.35",
    "web3-net": "1.0.0-beta.36"
  }

I run on my local and printout correctly as below

Network Type: rinkeby

sample source code: https://github.com/hadv/web3-client

const Web3 = require("web3")

web3 = new Web3(new Web3.providers.HttpProvider('https://rinkeby.infura.io/5rhaTHgnqnbTEFj1S1Ya'));
web3.eth.net.getNetworkType(function(err, res){
      console.log("Network Type: "+res);
});
| improve this answer | |
  • can you please post your code in github I'm struggling for more than 4 days – e.k Aug 29 '18 at 5:47
  • I included that too. My code is const Net = require('web3-net'); net = new Net(Net.givenProvider || 'rinkeby.infura.io/v3/xxxxxxxxx'); web3 = new Web3(new Web3.providers.HttpProvider('rinkeby.infura.io/v3/xxxxxxxxx')); web3.eth.net.getNetworkType(function(err, res){ console.log(err); console.log("Network Type: "+res); //Displaying undefined }); Still it is undefined – e.k Aug 29 '18 at 5:55
  • @e.k still using your code, but i edit to put the code in my answer; you need to update package.json and run npm install to update the lib then it will be fine – Ha ĐANG Aug 29 '18 at 6:47
  • I put the code to github, please check it out: github.com/hadv/web3-client – Ha ĐANG Aug 29 '18 at 6:53
  • I don't know what is the problem here. Thank you for your help. I give up. – e.k Aug 29 '18 at 6:59

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