using web3 object on meteor server side code?

[hems]

I'm trying to use web3 from the server as i wish the server side code to do the interaction with the blockchain, so i can keep my application "transparent" to users, but web3 is undefined after adding this package.

my installation was simply: meteor add ethereum:web3

Any suggestions ?

[frozeman]

Did you try this https://github.com/ethereum/wiki/wiki/JavaScript-API#adding-web3

var Web3 = require('web3');

web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

[hems]

i tried meteor add ethereum:web3 but web3 still undefined on the server, is that the expected behaviour ?

should i require it through npm ?

[hems]

Even though i can see web3 @package.json is supposed to export to the server, i still get it undefined on meteor server code.

tests/embark [ meteor --version              
tests/embark * ] 2:41 am
Meteor 1.1.0.2

tests/embark [ node --version
tests/embark * ] 2:41 am
v1.2.0

# server/app.js
Meteor.startup( function(){

  console.log("Server started")

  console.log( "web3 ->", web3 )
})

W20160202-02:39:42.052(0)? (STDERR) ReferenceError: web3 is not defined
W20160202-02:39:42.052(0)? (STDERR)     at app/server/embark.js:1:36
W20160202-02:39:42.052(0)? (STDERR)     at app/server/embark.js:3:3
W20160202-02:39:42.052(0)? (STDERR)     at /Volumes/backpack/git/xxx/tests/embark/.meteor/local/build/programs/server/boot.js:222:10
W20160202-02:39:42.052(0)? (STDERR)     at Array.forEach (native)
W20160202-02:39:42.052(0)? (STDERR)     at Function._.each._.forEach (/Users/hems/.meteor/packages/meteor-tool/.1.1.3.pfjq9++os.osx.x86_64+web.browser+web.cordova/mt-os.osx.x86_64/dev_bundle/server-lib/node_modules/underscore/underscore.js:79:11)
W20160202-02:39:42.052(0)? (STDERR)     at /Volumes/backpack/git/xxx/tests/embark/.meteor/local/build/programs/server/boot.js:117:5

[frozeman]

The Web3 object is available (uppercase).

You need to instantiate it first. See the veering started guide on the web3.js docs page in the wiki.

On 01.02.2016, at 18:38, henrique matias [email protected] wrote:

i tried meteor add ethereum:web3 but web3 still undefined on the server, is that the expected behaviour ?

should i require it through npm ?

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Reply to this email directly or view it on GitHub.

[hems]

@frozeman ooooooh gosh. my bad!

where is my n00b badge? ( :

[parthi2929]

Hi
In case of local testrpc its ok. but how to use testnet like rinkeby

[kn1g]

try
geth --rinkeby --rpc --rpcapi db, eth, net web3, personal --unlock="YOURACCOUNT"

e.g.
geth --rinkeby --rpc --rpcapi db, eth, net web3, personal --unlock="0x876h54e45hz..."

still use:
var Web3 = require('web3');
web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));