Questions tagged [infura]

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

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Problems subscribing to infura via websockets

So I have a dapp that includes a node server, which I have got to work successfully using ganache, using this line: web3 = new Web3(new Web3.providers.WebsocketProvider('http://127.0.0.1:8545')) I ...
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How does getDefaultProvider work in ethers.js?

From the docs: This creates a FallbackProvider backed by multiple backends (INFURA and Etherscan). This is the recommended method of connecting to the Ethereum network if you are not running ...
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Connecting to Rinkeby using Infura and calling a state-changing function from smart contract

So i have trouble using a smart contract on Rinkeby through infura as it gives an "extra-data" error, which as far as i have read, is due to Rinkeby being a POA testnet. There are suggestions of using ...
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46 views

How to connect with WebSocket with Web3?

Already referred web3 documentations and other Q-A for web socket connection. Currently using infura as provider.
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truffle migrate fails silently

I'm trying to deploy a truffle project to testnet. When I run truffle migrate --reset --network rinkeby --verbose-rpc, this is output: You can improve web3's peformance when running Node.js versions ...
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Is there any working provider for Ethereum Classic APIs?

Provider used for Ethereum is Infura, but there is no any provider for Ethereum Classic. Previously tested Ethercluster endpoint to access APIs for Ethereum Classic, not able to connect with Kotti ...
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Storing results on web3 call in JavaScript Object

Disclaimer: Terrible at Javascript I am trying to loop through events and store the block number, to and from accounts in a Javascript object. I am not sure what I am doing wrong, but it isnt working ...
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Cannot connect to Infura

I recently registered to Infura and trying to connect to the Ethereum Mainnet using the command below ({MY_PROJECT_ID} is swapped for my actual project id) curl -H 'Content-Type: application/json' \ ...
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Infura returns block: null when query is for “block: null”

Sometimes, when I call getBlock('latest') function on my infura node, it returns block: null wh
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How to get events on android with infura?

I am developing an app on Android, but Web3j does not support events on infura ( Should I use Infura with Web3j for Event filter? ) . What are the options, I did not find any alternative library?
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Web3 0.20 contract deployment

environment: Web3 0.20.7,Infura,node.js(backend) Deploy contract with Web3 0.20.7 pragma solidity ^0.5.1; contract Bang{ address holder; address proxy; constructor (address _holder, ...
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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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How to get the miner address of a block with infura Rinkeby endpoint?

I've read some docs online that to get the miner/sealer/signer address of a particular block that runs with the Ethereum PoA/Clique consensus (the Rinkeby testnet for example), I need to call the ...
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Cannot read property 'type' of undefined - abi-coder

I'm creating a simple voting contract. It is deployed with truffle and infura. This is the contract code: pragma solidity >=0.4.21 <0.6.0; contract Voter { struct OptionPos { uint ...
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What's the difference between ipfs.infura.io vs ipfs.io

When saving ipfs hash, i find that ipfs.infura.io is x10 faster than ipfs.io. If the public gateway (ipfs.io) has a negative impact on user experience due to its slowness, why people would use that ...
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intermediate value is not iterable

I try to construct a transaction with Node (11.4.0), ethereumjs-tx (1.3.7) and web3 (1.0.0-beta.55) and Infura. Infura gives me '0x35b' for the nonce, then I create the tx: amount = 0.001; nonce = '...
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46 views

Truffle migrate --network ropsten always runs development network

I am trying to deploy a simple contract to the Ropsten network using Truffle and Infura. I have set up the Ropsten network in the truffle-confug.js file but it seems truffle always uses the ...
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74 views

Why does the error Invalid response received: 403;?

Develop a java project to connect to ethereum blockchain and until now no error has been presented, but now this error appeared:   org.web3j.protocol.exceptions.ClientConnectionException: Invalid ...
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Cannot declare web3 object in JavaScript

When I try to declare a web3 object It's always undefined. I'm writting in JavaScript and using Infura as my provider for the ETH mainnet. I also tried with a local blockchain instead of Infura, but ...
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114 views

Infura Request Limitations

Are there any official information about request limitations? I know for example that there is a limit for the amount of results in getLogs: https://infura.io/docs/ethereum/json-rpc/eth_getLogs ...
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Trying and failing to switch my dapp from local node to infura, please help? [closed]

I have a nodejs 'server' running that listens for events on the blockchain. Currently I have this line in my code: var provider = new Web3.providers.HttpProvider("http://localhost:8545"); But I'm ...
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Using web3j with infura returns null

I've used web3.js to handle my contracts, and it worked very well. But web3j is pretty hard for me since the beginning. I'm using android studio, infura, web3j. Since I don't know very much about ...
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54 views

Web3 connecting to Infura

installed web3 and follwed steps int he image
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Developer downloading ledger reasoning? [duplicate]

My question is a little odd, but I will ask it anyways. From a development perspective, knowing that there is a service such as Infura, why would a developer download the whole ledger? Infura ...
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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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92 views

How to use eth_newFilter to get pending incoming transactions to a contract?

I'm trying to get pending transactions to a certain contract using Infura. Is it possible to do that using eth_newFilter? Since apparently these filters only "trigger" from contract events, does that ...
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Infura websocket API timing out on connect

Has anyone ever had issues with the Infura Websocket API suddenly ceasing to respond. I have been using it to subscribe to event logs, but now the connection to the API is timing out.
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111 views

The method eth_sendTransaction does not exist/is not available on infura

Im trying to send transaction to simple greeter contract with web3.js on infura node.while doing soo, Im getting this error. throw errors.InvalidResponse(result); ^ Error: The method ...
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180 views

Transaction stuck in 'Pending' state when using 'sendSignedTransaction'

I am trying to execute a transaction by first signing it with my private key using ethereumjs-tx and then using sendSignedTransaction to send the transaction to the network. But somehow the ...
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53 views

Unable to Deploy Smart-contract to Ropsten from Truffle using Infura

I want to deploy my smart-contract on ropsten or rinkeby network from Truffle using Infura API, but face difficulty in deploying on any network. I am using windows and my contract works well on ...
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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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131 views

Reset my infura project api key and secret id? [closed]

https://mainnet.infura.io/v3/<api_key> Can i access my project wallet using a newly generated api key and secret id? Is it possible to reset these credentials in infura?
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How to use 'geth attach' with Infura?

I have a project in Infura and the project ID is 6f...3a. I'm having problem to start geth attach process with Infura. I tried all protocols (http, https, ws and wss) but all failed. Did I miss ...
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57 views

web3.isConnected returns False web3.py

Here is the code I have: from web3 import Web3 infura_url = 'https://infura.io/project/MyProjectID' web3 = Web3(Web3.HTTPProvider(infura_url)) print(web3.isConnected()) The problem is that it ...
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3answers
147 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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156 views

Infura Web Sockets doesn't work on Infura

I have a problem with connecting via Websockets to Infura. I am listening on some events from my smart contract, so when some event is dispatched by calling some method from smart contract, I should ...
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51 views

Problem with send method in Infura

Newly Infura site has been changed its interface. Before that all methods of our client program was successfully working, but now when I logon to Infura, all whitelists has been removed. I added our ...
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220 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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372 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 ...
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117 views

How do you set up a Truffle script with Infura as provider?

I'm trying to set up my Truffle scripts to use Infura as a provider. I have the following, which appears to set everything up correctly: const HDWalletProvider = require("truffle-hdwallet-provider");...
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354 views

Uploading files on IPFS Infura

I am trying to make a dapp to upload files on IPFS Infura. I am using IpfsHttpClient in web browser by including the script <script src="https://unpkg.com/ipfs-http-client/dist/index.min.js">&...
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473 views

Error: types/values length mismatchProblem when calling payable contract function with web3

Enviroment Node version: v10.15.3 Web3: ^1.0.0-beta.50 Net: Ropsten My smart contract is a very simple payable/balance one and my goal is to contribute 0.1 ETH to raise the contract balance using ...
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165 views

How to unlock account using web3js with infura? [duplicate]

I need to unlock accounts using web3js with infura.io, but it seems that infura does not support web3.personal modules. In this case, I think options are 1.using geth or parity for client node not ...
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57 views

Request user to sign state changing transaction with metamask using Infura and web3js

Can't seem to find the right function to ask the user to sign a transaction via metamask, this is my code so far: const bet = '102500000000000010' const account = '...
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1answer
56 views

Calling payable state changing function on client side with metamask in ethereum infura testnet

I can't seem to find an answer for my problem, or it's either impossible and I'm missing something, or it's trivial and I'm missing something. I have this function on client side: const bet = web3....
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Deploying and Interacting with smart Contract through infura from web3.py

I'm trying to deploy smartcontract on ropsten testnet through infura node in web3.py. here is my code w3 = Web3(HTTPProvider("http://ropsten.infura.io/<*Privatekey>")) # Instantiate and deploy ...
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Infura V3 spec cannot find Project Id

I used to use the old version of infura and it worked just fine. The latest version is not working as it states that it cannot find the id despite it being there. https://mainnet.infura.io/v3/...
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56 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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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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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....