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I get the error TypeError: XMLHttpRequest is not a function when I try to connect to a node on the server side of my meteor application.

The error is caused by meteor using the meteor HTTP package instead of XMLHttpRequest. From this question.

How else can a meteor app connect to an ethereum node from the server side?

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  • Did you find a solution for this problem? I have the same issue.
    – Bumblebee
    Commented Jun 27, 2017 at 17:32
  • @Bumblebee no im still trying
    – Joe
    Commented Jun 28, 2017 at 8:52
  • Meteor uses a different http module docs.meteor.com/api/http.html and here is an issue on we3js #579
    – niksmac
    Commented Jul 3, 2017 at 12:35
  • @niksmac could you explain a bit further- what do I need to do to get it working?
    – Joe
    Commented Jul 3, 2017 at 12:38
  • Simply put, its not a web3 related issue. If you can use the web3 js outside the scope of Meteor; it might work, idk. Never used Meteor.
    – niksmac
    Commented Jul 3, 2017 at 12:43

1 Answer 1

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I had the same problem and finally found the solution. I followed this guide and it worked.

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

Web3 has to be decleared like this:

var Web3 = require('web3');

and then you can create an instance of Web3 like this:

if (typeof web3 !== 'undefined') {
    web3 = new Web3(web3.currentProvider);
} else {
    web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));        
};

I hope this helps

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