Lesson 9 Staging Test: Verify Error: getaddrinfo EAI_AGAIN api-goerli.etherscan.io

[wolf3i]

Hi,

since I am having issues with my Raffle Stagingtest I redeployed using yarn hardhat deploy --network goerli --reset.
But now the verifying piece of the deployment script failed...
I checked the etherscan API Key and to be sure created a new one (and replaced it in the .env). Interestingly in the API Statistic it says that there has been no request in the last hour.

To be sure I wrote a script which only verifies the deployed contract but I get the same error:

NomicLabsHardhatPluginError: Failed to send contract verification request.
Endpoint URL: https://api-goerli.etherscan.io/api
Reason: getaddrinfo EAI_AGAIN api-goerli.etherscan.io
    at verifyContract (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/etherscan/EtherscanService.ts:35:11)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at attemptVerification (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:474:20)
    at SimpleTaskDefinition.action (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:778:48)
    at Environment._runTaskDefinition (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:311:14)
    at Environment.run (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:159:14)
    at SimpleTaskDefinition.verifySubtask [as action] (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:312:28)
    at Environment._runTaskDefinition (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:311:14)
    at Environment.run (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:159:14)
    at verify (/home/wolfgang/nftideationcode/hardhat-smartcontract-lottery-fcc/utils/verify.js:6:9)

    Caused by: Error: getaddrinfo EAI_AGAIN api-goerli.etherscan.io
        at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:71:26)

When I google the Error reason it seems like its a Nomic problem, but I have had this since 4 days...

Edit:

On Etherscan it says:

Similar Match Source Code 
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xe2DC2Fb6225eCdF7...

I understand that etherscan is clever and sees that I have already depolyed the same contract before and uses that verification for the new one. But shouldnt I be able to verify it again? And not get such a weird Error message and rather something like "already verified"?

[paulcoffee85]

Maybe check this==> #2314 (comment)

[wolf3i]

thx for the link! Unfortunately I don't find a solution for my problem in that thread.
I'll post my code here since @krakxn seemed to have found the issue in the verify script:

My Verify script in the script Folder which I call with hh run scripts/verifyRaffle.js --network goerli

const { network, ethers } = require("hardhat")
const { developmentChains, networkConfig } = require("../helper-hardhat-config")
const { verify } = require("../utils/verify")

async function verifyRaffle() {
	const { deploy, log } = deployments
	const { deployer } = await getNamedAccounts()
	const chainId = network.config.chainId

	// deployer = (await getNamedAccounts()).deployer
	raffle = await ethers.getContract("Raffle", deployer)

	vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"]
	const entranceFee = networkConfig[chainId]["entranceFee"]
	const gasLane = networkConfig[chainId]["gasLane"]
	subscriptionId = networkConfig[chainId]["subscriptionId"]
	const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"]
	const interval = networkConfig[chainId]["interval"]

	const args = [
		vrfCoordinatorV2Address,
		entranceFee,
		gasLane,
		subscriptionId,
		callbackGasLimit,
		interval,
	]

	log("Verifying...")
	await verify(raffle.address, args)
}

verifyRaffle()
	.then(() => process.exit(0))
	.catch((error) => {
		console.error(error)
		process.exit(1)
	})

hardhat.config.js

require("@nomiclabs/hardhat-waffle")
require("@nomiclabs/hardhat-etherscan")
require("hardhat-deploy")
require("solidity-coverage")
require("hardhat-gas-reporter")
require("hardhat-contract-sizer")
require("dotenv").config()

const GOERLI_RPC_URL = process.env.GOERLI_RPC_URL
const PRIVATE_KEY = process.env.PRIVATE_KEY
const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY

module.exports = {
	defaultNetwork: "hardhat",
	networks: {
		hardhat: {
			chainId: 31337,
			blockConfirmations: 1,
		},
		goerli: {
			url: GOERLI_RPC_URL,
			accounts: [PRIVATE_KEY],
			chainId: 5,
			saveDeployments: true,
		},
	},
	gasReporter: {
		enabled: true,
		outputFile: "gas-report.txt",
		noColors: true,
		currency: "USD",
		coinmarketcap: COINMARKETCAP_API_KEY,
		token: "ETH",
	},
	solidity: "0.8.7",
	namedAccounts: {
		deployer: {
			default: 0,
			1: 0,
		},
		player: {
			default: 1,
		},
	},
	mocha: {
		timeout: 500000, // in mSeconds
	},
	etherscan: {
		apiKey: process.env.ETHERSCAN_API_KEY, // This is needed for verifying
	},
}

helper-hardhat-config.js

const { ethers } = require("hardhat")

const networkConfig = {
	5: {
		name: "goerli",
		vrfCoordinatorV2: "0x2Ca8E0C643bDe4C2E08ab1fA0da3401AdAD7734D",
		entranceFee: ethers.utils.parseEther("0.01"),
		gasLane: "0x79d3d8832d904592c0bf9818b621522c988bb8b0c05cdc3b15aea1b6e8db0c15",
		subscriptionId: "9526",
		callbackGasLimit: "500000",
		interval: "30", // seconds
	},
	31337: {
		name: "hardhat",
		entranceFee: ethers.utils.parseEther("0.01"),
		gasLane: "0x79d3d8832d904592c0bf9818b621522c988bb8b0c05cdc3b15aea1b6e8db0c15", // This is gonna be mocked anyway so no need to put the actual gaslane address in here
		callbackGasLimit: "500000",
		interval: "20",
	},
}

const developmentChains = ["hardhat", "localhost"]

module.exports = {
	networkConfig,
	developmentChains,
	// patricks repo has more stuff here...
}

[wolf3i]

Ok I deployed the contract again reusing the existing contract I created yesterday on goerli testnet and this time got a timeout error. So I disconnected from my VPN (which I had disconnected it yesterday, too) and ran the deployscript again and now the verification worked 🎉
I can't tell why tho other than time has passed. which doesnt make sense since I have been working on this since a couple days...

[sefkoleen]

Worked for me to. When I turned off the VPN, worked like a charm!