Questions tagged [infura]

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

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Signing Ropsten transactions with

I am trying to sign transactions using the Web3 HDWalletProvider package and an infura API. I am using the following code: const Web3 = require('web3'); const Web3HDWalletProvider = require("web3-...
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2answers
641 views

Deploying on Rinkeby with Truffle using infura

If I want to use HDWalletProvider to deploy my contract on a specific address, what should I do? rinkeby: { provider: () => { return new HDWalletProvider("Mnemnoic", "https://ropsten.infura....
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1answer
24 views

Cannot read property 'then' of undefined

I am trying to send ether from one address to another. After executing the code I am receiving an error: Cannot read property 'then' of undefined. How can I fix this? Thanks in advance. const Web3 = ...
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2answers
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Infura Json RPC: how to call a function passing parameters?

IMPORTANT My final goal is receive data via api on a php server and use Infura to call my contract to save the data Test Situation having this test contract on rinkeby contract test008 { ...
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1answer
331 views

Error on WebSocket connection to Infura Ropsten (broken close frame)

I am trying to connect to Ropsten with Web3js (1.0) via Infura using their WebSocket provider but I am getting the following error: WebSocket connection to 'wss://ropsten.infura.io/ws' failed: ...
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2answers
32 views

How to get new transactions by addresses?

I have an array of addresses on my server which I need to track. What method should I use to do that via websockets? I’m new to eth and cryptocurrency at all, and I don’t understand “blocks”, “gas ...
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1answer
109 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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24 views

how can someone use the smart contract deployed on Rinkeby network? what are next steps after successful deployment? [duplicate]

I am new to the smart contract and blockchain technology but learning step by step. I developed a small bidding smart contract in solidity. Using Truffle, NPM and Infura, I deployed it in the Rinkeby ...
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1answer
19 views

What is the data field in eth_call commands for USDT?

I'm trying to use eth_call to send USDT (TetherToken) from one account to another (Although I know that eth_call just simiulate such transaction). Everything is clear in this regard, just the data ...
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1answer
23 views

Infura getLogs returns an empty result

I'm writing a crypto based system with PHP on Infura, and now I am coding a script to retrieve logs for a specific address. This is my code: $ch = curl_init($my_server_url); $data = array( '...
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1answer
378 views

Error: `Invalid JSON RPC response` when running estimateGas on Infura

Why am I getting an error when doing a gas estimation on infura. I am using web3 v1.0 and here is my code: let Web3 = require('web3'); var web3 = new Web3(new Web3.providers.HttpProvider('http://...
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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); } ...
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1answer
572 views

insufficient funds for gas * price + value even though balance is way more than gas * price + value

Getting this error only on some of the wallets I tried. Too low is for sure not the problem. Working on infura. sendEth = async function(fromm, frommPUB){ fromAcc = web3.eth.accounts....
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1answer
30 views

How to create account using mnemonic words or private key in web3js and call contracts using that account

I have a simple React Project with web3@1.2.4 installed and I want to call a contract's method like this: await maincontract.methods.CurrentMethod("arguments").send({ from: accounts[0]/*my account ...
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4answers
212 views

Replacement for Infura site

I have been using Infura site for accessing main Ethereum network, but newly this site has changed its services and don't service send methods. I searched a little and found Quicknode site, but ...
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1answer
25 views

Infura node seems to crash when tryining to deploy contract

I am trying to deploy a contract and run some tests on the functions within it. Here is what my code currently looks like: package main import ( "context" "crypto/rand" "encoding/hex" ...
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1answer
147 views

Error: Invalid JSON RPC response | ropsten.infura

I'm trying to deploy my contracts to the ropsten test network, but I get this error. the message error : C:\Users\acer\test>truffle migrate --reset --network ropsten Using network 'ropsten'. ...
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1answer
221 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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2answers
451 views

How to use balanceOf function with Web3j for an android app

I am trying to use the balanceOf function after the generation of our smart contract (pakoin) function wrappers in Java with Web3j. Despite trying different ways, I get plenty of errors and I don't ...
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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 = ...
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1answer
305 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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1answer
600 views

Command line tool to interact with smart contract

I want to be able to interact with functions on a smart contract. I do not want to setup my own node using geth, and would like to use something like Infura as a remote node. Based on what I have ...
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1answer
673 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>") }, ...
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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....
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1answer
79 views

Web3py. Error getting events using Infura: “The method eth_newFilter does not exist/is not available”

I'm trying to get all events from contract, but get error: "ValueError: {'code': -32601, 'message': 'The method eth_newFilter does not exist/is not available'}" I'm using Web3py and Infura. My code: ...
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83 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 data = gntContract.transfer('...
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1answer
44 views

NodeJS + Web3 + Infura Ropsten - Error: Invalid JSON RPC response: “”

I have problem with invalid response to ethereum from BE NodeJS app. I got error like: Error: Invalid JSON RPC response: "" Below I'd attached my simple code for testing connection. const Web3 = ...
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1answer
71 views

TimeoutError when using Infura websocket with web3.py

When I run the following code sometimes it executes successfully, but most of the time it raises a concurrent.futures._base.TimeoutError. What can I do to fix this? Here is the code: infura_url_ws = ...
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2answers
26 views

Why use nodepools or backends?

I have a fundamental question about eth/blockchain infrastructure. I see several posts talking about the need for backend node infrastructure when launching a dapp/ smart contract. This infrastructure ...
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0answers
24 views

Why does Infura Ropsten websocket filtering event timeout?

When listening events via Infura Ropsten websocket, web3.py implementation timeout while web3.js succeeds. The demo can be cloned from -- https://github.com/jerryji/ropsten_wss_timeout_demo After ...
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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: ...
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2answers
89 views

how to write backend for contract if you use infura ropsten metamask and remix

i'm using metamask with ropsten. deployed my contract on ropsten using remix. for the backend i used infura to create instance of web3. ew Web3(new Web3.providers.HttpProvider('https://ropsten.infura....
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1answer
16 views

What is the client version?

I am using Infura and web3.py. When I connect to Infura the web3 object has a clientVersion property that reads this from JSON RPC "Geth/v1.8.15-omnibus-255989da/linux-amd64/go1.10.1" Can someone ...
2
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1answer
51 views

Error trying to get events in web3.py via Infura

I was trying to get all events from my smart contract (in Ropsten) via Infura node. The problem is that I know that Infura does no support creating filters, but I don't know how to get events by ...
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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 ...
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0answers
34 views

How do you mint tokens on Compound Finance with Infura and Web3

I'm new to Compound and I'm trying to get minting/redeeming implemented in my app using Infura (Ropsten) as my httpProvider for Web3. I understand that Infura doesn't allow invocation of ...
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1answer
331 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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1answer
70 views

CONNECTION to Rinkeby showing false, contract not getting Deployed

SOURCE CODE var Web3 = require('web3'); var Tx = require('ethereumjs-tx'); const fs = require('fs'); const solc = require('solc'); var web3 = new Web3(); web3.setProvider(new web3.providers....
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0answers
40 views

Infura API: getPastLogs times-out, even when there are less than 2500 records

I would like to receive all event logs for a particular topic of an event log. I know there is a limit of 10,000 records, but the getPastLogs function times-out when less than 2,500 records need to be ...
2
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1answer
174 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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2answers
210 views

Is there a way to get enode:// addresses of etherscan and infura nodes?

How can I get enode:// addresses of Infura and Etherscan nodes? Both mainnet and ropsten ones preferably. I would like to add them to my nodes peers list to be able to sync better. Thanks!
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2answers
76 views

How to post to the blockchain without a third party API like infura

I have been using web3 nodejs and infura.io to build apps that interact w/ the Ethereum Blockchain and it is all great but I don't like the idea of a failure point my my apps because they rely on a ...
2
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1answer
69 views

Metamas - Infura problem. Cannot read property 'currentProvider' of undefined

I got a problem. I am using code below to connect to the eth from node.js app. Everything works perfect as long as I have installed MetaMask in my browser. I can be logged in, logged out, all good ...
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1answer
16 views

AttributeError while trying to call a contract using web3py and Infura

I am trying to call a function from an already-deployed contract on the Ropsten network: from web3 import Web3 infura_url = "https://ropsten.infura.io/v3/XXXXXXXXXXXXXX" w3 = Web3(Web3.HTTPProvider(...
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3answers
111 views

How do I send a transaction using web3.py and Infura?

I am using Infura to interact with the Ropsten testnet. I would like to send a transaction from one account to another, but the following code does not work: w3 = Web3(Web3.HTTPProvider('InfuraUrl')) ...
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2answers
60 views

Could I use Infura to get the token details?

I went through https://infura.io/docs but not sure if Infura could allow me to read token details like owner, token Id, etc. I also googled on how to read token using Infura but to no avail. Has ...
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1answer
33 views

Error sending ether to a a smart contract deployed in ropsten with web3 with python

I am trying to send ether to a smart contract deployed on ropsten via infura, but I am having some problems in txn. The error is "Error in Txn: Reverted". The sender account has enought ether to ...
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1answer
131 views

getting full pending transactions from Infura

I use Infura to get all pending transactions from Ropsten: web3.eth.subscribe('pendingTransactions', async (error, txHash) => { let tx = getTransaction(txHash) ... } With this ...
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3answers
773 views

Deploying smart contract with truffle and infura giving me error

I am having trouble deploying my smart contract to the ropsten network using infura and truffle am getting error that says "var sig = secp256k1.sign(msgHash, privateKey); ^ ...
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1answer
38 views

Unlock Ethereum account via infura

I am trying to connect my wallet (Metamask) via Infura, but I receiving an error. My code: [HttpPost] public async Task<IActionResult> LoginAsync([ModelBinder(typeof(AccountBinder))] ...