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Questions tagged [infura]

INFURA is a scalable, standards-based cluster and API endpoint for Ethereum & IPFS.

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1answer
28 views

Infura - Signing transactions in a multi-user application

I hope this question is not a duplicate. Since I'm using Infura as a full node, I need to send raw transactions by signing them. In a multi-user application how would my application on the server-...
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0answers
23 views

metamask and infura - Managing and signing with private keys

I am using Infura as a node for my DApp so I need to send raw transactions by signing them. These transactions can come from multiple users of an application so each user must sign and send a raw ...
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23 views

Metamask not connected with web3.js

if (typeof window.web3 !== 'undefined') { web3 = new Web3(web3.currentProvider); } else { // set the provider you want from Web3.providers window.web3 = new Web3(new Web3....
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1answer
37 views

Truffle tries deploy from unknown account

I am trying to deploy a contract to Ropsten using Infura with the config file truffle.js below. The deploy fails because the account listed in the error message has insufficient funds – however I do ...
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0answers
18 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....
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13 views

Genearte error 'invalid sender' when doing send transaction using infura or roopsten

I am using following code to perform transaction web3 = Web3(HTTPProvider('https://ropsten.infura.io/{}'.format('XXXXXXXXXXXXXXXXX'))) print('https://ropsten.infura.io/{}'.format('XXXXXXXXXXXXXXXXXXX'...
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0answers
20 views

How to send transaction using web3py using infura.io

I have connected to mainnet via infura.io and have used http provider for connections now i want to generate address and send transaction And i wand to send real eth so how can i do this?...
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14 views

eth_sendTransaction doesn't exist when using Infura node

I'm trying to sign a transaction offline and then send it using sendRawTransaction since I'm connected to an Infura node. My raw transaction looks like this let rawTransaction = { "from":...
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1answer
37 views

How to use local Metamask account with Infura Node [duplicate]

I'm building a DApp using web3js that sends ERC20 Tokens from a browser Metamask account to an escrow contract on the Rinkeby testnet. I'm using a Rinkeby node from Infura, and when I call web3.eth....
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1answer
127 views

How to deploy a smart contract using Infura and web3js@1.x.x on NodeJS?

I have an application written in NodeJS that each time it starts has to deploy a smart contract. Once the contract is deployed this application will interact with it making some transactions and ...
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1answer
39 views

Facing UnhandledPromiseRejectionWarning warning message in web3 infura

So far, I'm trying to get transactions list using web3 & infura by websocket provider. Here is my code const Web3 = require("web3"); const web3 = new Web3(new Web3.providers.WebsocketProvider('...
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27 views

Get the result back of a smart contract function call using INFURA

This is the function I use to send a signed transaction using Infura to invoke a smart contrac function (see details for the params of the transaction). web3.eth.sendSignedTransaction('0x' + ...
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41 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 ...
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0answers
21 views

UnhandledPromiseRejectionWarning: AssertionError [ERR_ASSERTION]: The field to must have byte length of 20

I'm encountering a problem that I'm not able to solve. The code should launch a configured transaction with the details object. The current configuration is set to Ropsten and I am using the INFURA ...
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1answer
64 views

infura don't catch event

when i'm working on ganache all event that i have emit are store in my nodejs server but when i turn to kovan or ropsten my server don't catch event . i'm working with infura this my code no ...
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31 views

how to provide web3 while deploying in infura

const HDWalletProvider = require('truffle-hdwallet-provider'); const Web3 = require('web3'); const { interface, bytecode } = require('./compile'); const provider = new HDWalletProvider( "punch ...
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1answer
65 views

Error when deploying with infura ropsten, rinkeby and kovan

when deploying to infura ropsten i get error Running migration: 1_initial_migration.js Deploying Migrations... ... 0x0ed88dd40f380a805ed0ba1b5b0a9d8178321ab6da9e5c0cb247f5700337b173 Migrations: ...
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0answers
58 views

Error when I try to deploy with infura

Running migration: 1_initial_migration.js Deploying Migrations... ... 0x0ed88dd40f380a805ed0ba1b5b0a9d8178321ab6da9e5c0cb247f5700337b173 Migrations: 0xcfc4ba0488f20c7a2bb24e735f43e240bf249bc8 Saving ...
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1answer
33 views

getting error while generating key after uploading file into IPFS infura

I'm getting an error while generating key after uploading file into IPFS infura. Sample code given below var ipfsAPI = require('ipfs-http-client'); const ipfs = ipfsAPI('ipfs.infura.io', '5001', { ...
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0answers
48 views

Sign a transaction locally and send it

I'm using Infura as my web3 provider, and have MetaMask installed to connect to the blockchain. I'm trying to send a transaction, but have learned that Infura is read-only, and doesn't support the ...
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0answers
77 views

Web3.js in Docker: invalid JSON-RPC response: undefined

Recently I've made a container out of my app, which used to work fine in a normal environment with an infura node. This is the code that's causing problems inside of the Docker container. I'm new to ...
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3answers
34 views

How to install infura to a server runing ubuntu 16.04

Im setting up an exchange and came to the installation of ethereum using this document http://support.bitexchange.systems/support/articles/how-to-install-ethereum-in-your-server. The 'geth' command ...
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0answers
29 views

CORS Error for using infura

I need to call the balance function from my smart contract using my application and i don't want to use metamask and other web3 providers like infua as I am not going to send any transactions and don'...
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62 views

Can anyone help me to access my eth account in metamask using infura in android

My question is about accessing my eth account in metamask using infura in android
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1answer
53 views

Using web3 estimateGas API (with infura) always returns the last block's gas limit

I am entirely unsure what the root cause is, but every time I use web3.eth.estimateGas with my call's parameters, it results in the last blocks gas limit as the result (~8 million). I have even tested ...
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0answers
25 views

sending ether Transaction failed when executing multiple transaction

I am sending ether to an array of addresses. I am getting the nonce value from eth_getTransactionCount. But problem is that the first transaction is successful but for the rest of the transactions are ...
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0answers
42 views

Transaction submitted through Infura, but not from local node

So, I have a Rinkeby fast sync on my server. When I try to interact with my contract and transfer something, geth says "Submitted transaction", but then I can't find it using its hash on etherscan. ...
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1answer
65 views

Am I using Infura with Web3j correctly?

This is the first time using infura with a Web3j HttpClient. I have seen people use a code after the url like this: "infura.io/--here--". Am I using Infura correctly? This is my code. (web3j v3.5.0) ...
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0answers
29 views

web3 smart contract calls to slow (arrays / lists)

I call contract like this : static async getInitialProps(res) { const users = await UsersContract.methods.getUsers().call(); const totalusers = await UsersContract.methods.getTotalUsers()....
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0answers
42 views

How can I make an offline transaction and send it to Ethereum client network in java?

private class Myclass extends AsyncTask<Void, Void, Void> { protected Void doInBackground(Void... params) { //sldknfbhvsjhxcnzmcxcmj Web3j web3 = Web3jFactory....
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1answer
78 views

Infura not broadcasting contract deployment transaction

I am attempting to deploy a contract via an Infura node, and I am the point where a txhash is generated from the sendSignedTransaction() web3 function. However, after the txhash is generated nothing ...
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0answers
56 views

contract does not gets deploy to rinkeby via Infura

I am trying to deploy my contract to Rinkeby network via Infura. But it actually does not get deploy to network when i run node deploy.js terminal does not spit out the address at which it is deployed....
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0answers
42 views

i can't get rid of this error

const HDWalletProvider = require("truffle-hdwallet-provider"); const Web3 = require('web3'); const {interface,bytecode} = require('./compile.js'); const provider = new HDWalletProvider( 'slim ...
2
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1answer
58 views

Issues sending Ether with web3j

Hello guys I have search around but no reasonable explanation as to why i would get these exceptions, I have already requested and have 3 ethers with associated with my address. Here is my code for ...
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1answer
158 views

Dapp User Account Storage and IPFS/infura

I'd like to build a dapp utilizing the power of the Ethereum blockchain and IPFS. Right now, my plan is to have users sign up to use the app and store their account data + files on IPFS through a ...
1
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1answer
101 views

How do I verify and query my transaction? (Web3.py + Infura + Remix)

I've used buildTransaction() (which works at Contract.transact()) and I can see my transaction has taken place. (https://ropsten.etherscan.io/tx/...
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0answers
58 views

Unable to call setter function in solidity using Infura

Solidity code contract Greeter { string public greeting; function Greeter() public { greeting = 'Hello'; } function setGreeting(string _greeting) public { greeting = _greeting; } function ...
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1answer
33 views

How does Infura deal with Finality

When submitting smart contract calls to infura or subscribing to a contract's events, does infura have it's own finality bound or will I have to implement this in the client?
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1answer
32 views

Issues while sending raw transaction for calling smart contract methods?

let provider_url = "https://ropsten.infura.io/v3/d5bca90ec3084aee8abd468fdf876a11"; this.web3Provider = new Web3.providers.HttpProvider(provider_url); window.web3_ = new Web3(this.web3Provider); ...
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0answers
43 views

Error: cannot find module hdwallet-provider - trying to deploy contract to ropsten using infura key [duplicate]

I have reviewed the other posts in the last few days following what seem like forever for get to sync to my local machine - so this is my last try to get it to deploy the petshop contract to ropsten ...
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3answers
69 views

Why is browser taking so long to read blockchain data?

I have a dAPP and I use reactjs for the frontend. The application returns data from a smart contract (the balance) on the homepage. The main problem that I notice is that everytime I or any other ...
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2answers
89 views

How to use a metamask Wallet from web3,py?

I deployed contracts to Ropsten test net using truffle and a metamask wallet to pay for the transactions and Infura as a Hosted ethereum node. To do that in Truffle, I have to use the truffle-...
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1answer
87 views

How to send signed transactions concurrently via Infura?

I'm using web3js and web3js-raw as follows to change state of my smart contract on ethereum, let initiateAddLoyaltyTransaction = function (fromWallet, toWallet, companyName, amount, callback) { let ...
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1answer
103 views

Web3 Rinkeby Infura Problems

I've got a Smart Contract that works perfectly when deployed to localhost: 8545 (using Ganache) with my Web3 Dapp. But when I put it on Rinkeby, I'm running into problems,. The Contract is super-...
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1answer
312 views

web3 not connecting to Infura / Rinkeby Testnet

I've successfully deployed my Smart-Contract to the Rinkeby TestNet via Remix. Everything works perfectly from within Remix. But when I try to get my web DApp to fire methods in my Smart-Contract - ...
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1answer
130 views

web3.js-1.0.0-beta.36 - I can not connect to INFURA

Help with the solution Installed the web3.js-1.0.0-beta.36 package on the hosting server. Register and receive from Infura https://mainnet.infura.io/v3/myadress 3.Where and what should I register to ...
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1answer
338 views

How to use infura API with web3 js? [duplicate]

How to use infura API with web3 js? Where should I put secret key?
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2answers
177 views

Trouble connecting to web3 1.0 through web browser using Infura.io

I am trying to connect to web3 1.0 through a web browser, I dont see much documentation for 1.0 though. This script says im connected but I think its the previous version as anytime I try and run a 1....
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1answer
150 views

Getting TX is not defined when trying to send signed transaction [closed]

I am trying to learn how to send a signed transaction using web3 1.0 and Infura.io. I have node.js running locally for testing. I can successfully create an address and check balances but am getting ...
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0answers
78 views

Same Block Received More Than Once With Same Block Parameters

Use Case: I am implementing a deposit system where I will get a block as it is mined and parse transactions to check for a deposit of Ether or a specific token. Getting the same block twice will ...