Questions tagged [infura]
INFURA is a scalable, standards-based cluster and API endpoint for Ethereum & IPFS.
282
questions
16
votes
2answers
6k views
To which remote ethereum nodes does Metamask plugin send signed transactions? and are they exposed to denial of service attacks?
So Metamask allows in it UI to connect to different ethereum nw (public/ testnet) right.
Do who is maintaining these peers?
Can I trust these peers?.
If so, can I setup similar service on my machine ...
16
votes
2answers
9k views
Connecting to hosted web3 provider from NodeJS backend
I'm using these instructions from etherchain. Here's a similar question(seems like duplicate, but it's not). The solution provided there doesn't work for me, because I don't have a local ethereum ...
15
votes
4answers
7k views
Infura web3 provider for Events (.get & .watch)
I am using infura for connecting to testnet/mainnet as my server side web3 provider.
This works for most requests and operations, but it does not seem to work for Events.
const allEvents = (event, ...
12
votes
5answers
4k views
Elegant way to detect current provider int web3.js
I want to know what provider the user is using (Metamaks, Mist...)so I can give better user experience. E.g. Give tips on how to unlock an account
I'm currently doing this, but is far from elegant. ...
9
votes
4answers
12k views
How to connect to the Ropsten test-net using web3.js
I want to connect to the Ropsten test-net:
// Is there is an injected web3 instance?
if (typeof web3 !== 'undefined') {
App.web3Provider = web3.currentProvider;
web3 = new Web3(...
9
votes
3answers
3k views
Can not send eth on Ropsten using Infura node
I am trying to send some test ether on Ropsten network using Infura but I can not make a transaction. Code works locally with testrpc but not with Infura
var Web3 = require('web3');
var util = ...
9
votes
2answers
1k views
Running Mist with INFURA
Is it possible to run the Mist browser with an external ETH client like INFURA?
Yes, I understand this may not be the decentralized paradise we want to get to, but I'd just be happy to run a browser ...
9
votes
2answers
3k views
Truffle + Infura on Mainnet: Nonce too low error
I have the following code:
const Contract = artifacts.require('./Market.sol');
module.exports = async function(callback) {
let instance = await Contract.deployed();
for(var i = 0; i <=200; i+...
9
votes
2answers
2k views
How do I connect the geth console to an INFURA endpoint?
Rather than have a local node on my PC, I'd like to be able to attach the geth cli console to INFURA and then issue requests within geth's java console, e.g. web3.eth.getBalance(<address>)
I ...
7
votes
2answers
890 views
Why does sendSignedTransaction return a tx hash BUT does not post to the Rinkeby network (React, Metamask, web3, infura)
I'm developing a very simple React application wherein a user clicks a button and some ether gets sent from one account to another. Currently, the onClick sendEther function crafts a proper signed ...
7
votes
3answers
5k views
How to connect to infura and deploy contract use web3.py？
the orgin question is below:
How to connect to Ropston and deploy contract use web3.py？
I have deploy a contract to Ropston use remix and MetaMask.
I want know how to deploy a contract to Ropston via ...
7
votes
3answers
1k views
How to send a lot of transactions to ethereum, using js
I'm trying to send a lot of transactions to Ethereum with one program written in js. I use node js, web3 and infura ropsten. The problem is: if i send transactions at once, most of them just disappear....
7
votes
1answer
1k views
Adding Wallet using web3.eth.accounts.wallet.add
On web3 0.20.1, I am using Infura to deploy a contract to Rinkeby. This probably requires me to add a wallet to web3.accounts to provide the gas needed.
When I ran the following nodejs code,
Web3 = ...
6
votes
2answers
6k views
Simplest way to integrate Infura with a Web3/Truffle app?
I have a Truffle/Web3 app which has this code in app.js (by default) which runs when the page is loaded:
$(document).ready(function () {
if (typeof web3 !== 'undefined') {
console.warn('Using ...
6
votes
3answers
3k views
Truffle + INFURA for deployment
I've recently started to use Truffle to automate/speed up my development.
As I'm still getting the grasp of it I've come up with a barrier when trying to use INFURA for migrations.
INFURA nodes don'...
6
votes
3answers
7k views
Invalid JSON RPC response error for sendTransaction on Infura + Ropsten node + Truffle console
Calls work but transactions throw the error -
Error: Invalid JSON RPC response: ""
I am using web3 v0.19.0 & Truffle v3.4.9. Deploying contract using truffle,
truffle migrate --network ...
6
votes
1answer
703 views
Problem with start() in web3-provider-engine
While trying to connect to a provider(infura) I get the above error below is the full stack trace:
bundle.js:54318 Uncaught TypeError: this.provider.sendAsync is not a function
at Web3Subprovider....
5
votes
3answers
2k views
How long does Infura store a file on IPFS?
You can send files to Infura's IPFS servers but I don't know about the limits.
How long is it stored for?
What's the size limit?
5
votes
2answers
3k views
Best possible way to launch the ethereum mainnet node on AWS
I have multiple applications running on my local system. I want to make them live, I need ethereum main net node of my own. I launch the ethereum node on AWS server using supervisory mode but it doesn'...
5
votes
1answer
834 views
Cannot create filter on Infura via web3.py
I have an Infura account and I have the following code:
...
web3 = Web3(HTTPProvider("https://ropsten.infura.io/mytoken") )
web3_pending_filter = web3.eth.filter('pending')
...
when line ...
4
votes
1answer
2k views
How to properly set nonce in a web3 contract invocation?
I have this code, which works:
MyToken.airdrop(wallets,amounts,{
gas: 1267051,
gasPrice: 2000000000,
},function(err,tx){
console.log('err is %s',err)
console.log('tx is %s',tx)
callback(err,...
4
votes
1answer
3k views
Deploy smart contract to mainnet with Infura and MetaMask
I am trying to deploy my smart contract to the main net using the following code:
truffle.js:
module.exports = {
networks: {
live: {
provider: new HDWalletProvider("mnemonic from ...
4
votes
2answers
962 views
Testing in ropsten network with truffle.js gives me this error
root@ubuntu-4gb-nyc3-01:~# truffle migrate --network ropsten
(node:14686) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: this.provider.sendAsync is not a ...
4
votes
2answers
299 views
How do I make Populus talk to a node on Infura?
I signed up for Infura and they gave me a URL for a node to talk to, like https://ropsten.infura.io/mytokenjsifejsij39kdjkjfdk. (The part beginning mytoken isn't my real token.)
I'd like to deploy ...
4
votes
2answers
264 views
How should I store mainnet truffle artifacts?
Obviously, I shouldn't upload my private key or personal infura credentials to my repo, but I was wondering what was the best way to track main net truffle artifacts.
Generally speaking, for test ...
3
votes
1answer
2k views
Error: “The contract code couldn't be stored, please check your gas limit” [duplicate]
It's seem that is a very common topic but I couldn't find the solution in other questions, sorry for asking it again. I'm following a beginner example, trying to deploy a contract in Rinkeby Network ...
3
votes
2answers
1k views
Retrieving logs using filter is not working?
web3 has been connected to Infura node, can send signed transactions but web3.eth.filter is not working(405 error)?
3
votes
3answers
1k views
Deploying from Truffle to Infura.io
I'm trying to use the Infura or any other public provider to compile and migrate a simple test contract.
I don't get any errors when I run
truffle compile --network test
but it seems to hang and ...
3
votes
1answer
930 views
How to make smart contract call using INFURA and NodeJS web3js
I can not understand how I can prepare the transaction to be signed. Because INFURA does not support eth_sendTransaction but only eth_sendRawTransaction (INFURA API which then requires you to prepare ...
3
votes
1answer
557 views
How to store encrypted mnemonic for Truffle + Infura mainnet deploy
I'm about to deploy a small Dapp to Mainnet using infura. Built using express + truffle.
I'm curious to hear how people are storing their mnemonic value when deploying to mainnet using truffle + ...
3
votes
1answer
1k views
How to Perform Transact() On Contract Functions on Remote Node
I would like to call a smart contract functions using Web3 Python using the Infura mainnet node instead of a local node. I understand that I need to import the private key and use it to sign the ...
3
votes
2answers
3k views
Please provide PHP example for eth_sendRawTransaction
I wish to have a PHP script use Infura's endpoint to call eth_sendRawTransaction. I have a PHP script which uses curl to call functions through Infura's endpoint, like eth_getBalance.
I use ...
3
votes
1answer
3k views
Can't connect to Infura testnet or mainnet
From the Web3 JS API I've written:
var Web3 = require('web3');
var web3 = new Web3(new Web3.providers.HttpProvider("https://ropsten.infura.io/MYTOKEN"));
console.log(web3.currentProvider);
which ...
3
votes
1answer
581 views
Promise not resolved for web3eth.sendSignedTransaction
I am testing whether transactions that I'm signing offline are accepted by the Ropsten network. I'm submitting the transactions using Web3.js (web3@1.0.0-beta.51) as follows:
I connect to an INFURA ...
3
votes
1answer
394 views
Problem reading events, with web3 v1.0 beta 36 and infura
I am trying to read events from a contract already deployed on the blockchain. The event might return uint which is has the indexed property.
First I was using web3 from metamask and worked normally, ...
3
votes
1answer
1k views
How can I output the latest block number to a web page using web3.js 1.0.0 beta?
On a previous version of web3js it was just
document.write(web3.eth.blockNumber + "<br><br>");
and it outputs it in the section of the page where the script is as seen in the infura ...
3
votes
1answer
598 views
Strange output from truffle migrate --network live --dry-run
I can't get my contract to deploy successfully using Infura, MetaMask, and Truffle.
When I run truffle migrate --network live I get this error:
Error encountered, bailing. Network state unknown. ...
3
votes
2answers
2k views
JSON RPC calls using Parity. Difference between Infura and Geth?
I began by trying to follow the article on front running bancor with Python. I thought it would be easy to send an api request to my full node then replicate the same request in Python--all ...
3
votes
1answer
2k views
Truffle + INFURA remote provider deployment. Migrations not running
I am running into the same issue proposed by this question. I cannot resolve it because I am using a remote provider (INFURA), per this document.
My code looks like this:
var ethwallet = require('...
3
votes
0answers
230 views
The sendSignedTransaction function does not activate the on('receipt') event at an appropriate time
console.log(transacting...);
web3.eth.sendSignedTransaction('0x' + serializedTx.toString('hex')).on('receipt', receipt => {
log(receipt);
log(`https://ropsten.etherscan.io/tx/${receipt....
3
votes
2answers
43 views
Why does confirm that there is always 1 block apart on the mainnet when initiate multi-transactions simultaneously- by web3.py and Infura.io
1.I have a need to initiate multiple transactions to the same contract address in the fastest time and get confirmation from the network. Means that multiple transactions are recorded in the same ...
3
votes
1answer
675 views
Ropsten infura test network + web3 js event listener
I have deployed contracts on ropsten test network.
truffle.js
ropsten: {
provider: function() {
return new HDWalletProvider(mnemonic, "https://ropsten.infura.io/<api-token>")
},
...
3
votes
2answers
1k views
Invalid address error
I keep getting Error: Invalid address when trying to run the application.
My current setup of web3 using infura node is
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
} ...
3
votes
0answers
600 views
Should I use mainnet node provided by infura or create my own? [duplicate]
I am trying to implement a solution in my current system where payments can be made via ethereum main network. I have done some research and found out that I have two options of implementation:
Use ...
3
votes
1answer
768 views
Is there any way to see the txpool with infura and web3?
I'd like to get pending transactions information without running my own node. Is there any way to do that?
Something like this would work too, but they only seem to provide a fraction of the pending ...
2
votes
3answers
5k views
web3 Websocket connection to infura
I receive this error when I'm trying to connect to the websocket
WebSocket connection to 'wss://ropsten.infura.io/ws' failed: Error during WebSocket handshake: Sent non-empty 'Sec-WebSocket-Protocol'...
2
votes
2answers
3k views
Issue in websocket connection with infura using web3
I use websocket (ws) connection to Infura node
web3 = new Web3(new Web3.providers.WebsocketProvider ("wss://ropsten.infura.io/ws"));
Sometimes it's works fine or sometimes it give error on console: ...
2
votes
2answers
5k views
How to login with web3 without MetaMask?
Is it possible to sign a user in web3 without MetaMask? I am trying to execute a smart contract I created and I'm using Infura to connect to the Kovan test network, but web3.eth.accounts[0] is ...
2
votes
2answers
3k views
How to send transaction to Infura node using Web3?
I want to send ETH from one account to another using Web3 interface and Infura node. I have tried like below, and I got error 405(). Error: Invalid JSON RPC response: ""
I test it in Rinkeby test ...
2
votes
1answer
349 views
How to access metamask accounts when using Infura Websockets
I am making a dApp where in for login purpose I access metamask account to which user is logged in. I also have a back end server that listens to events emitted by the smart contract that updates data ...
