Lesson 6: verify contract timeout error, how to let "@nomiclabs/hardhat-etherscan" bypass firewall with proxy?

[lightrao]

when I verify my constract, some error happen:

yarn hardhat verify --network rinkeby 0x49D8cf6859AD9B1D9B27bF65A932c476EcB50F7a
yarn run v1.22.15
$ '.../Lesson 6/hardhat-simple-storage-fcc/node_modules/.bin/hardhat' verify --network rinkeby 0x49D8cf6859AD9B1D9B27bF65A932c476EcB50F7a
Nothing to compile
Error in plugin @nomiclabs/hardhat-etherscan: Failed to send contract verification request.
Endpoint URL: https://api-rinkeby.etherscan.io/api
Reason: Connect Timeout Error

I think mybe my network behind firewall, how to let "@nomiclabs/hardhat-etherscan" bypass firewall with proxy?

[alymurtazamemon]

@lightrao sometimes rinkeby network do these issues, you should try later it will work.

[alymurtazamemon]

@lightrao push it to GitHub and leave a link here.

[krakxn]

Try Goerli, if that does not work, push to GitHub and link it here—I will look into it.

[lightrao]

Try Goerli, also have error:

$ yarn hardhat verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
yarn run v1.22.15
$ '/Users/lightrao/Desktop/LightTechZen/Youbube/freeCodeCamp/full-blockchain-solidity-course-js/Lesson 6/hardhat-simple-storage-fcc/node_modules/.bin/hardhat' verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
Nothing to compile
Error in plugin @nomiclabs/hardhat-etherscan: Failed to send contract verification request.
Endpoint URL: https://api-goerli.etherscan.io/api
Reason: Connect Timeout Error

For more info run Hardhat with --show-stack-traces
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

For use proxy, I add the two line "104.22.15.57 api-rinkeby.etherscan.io 104.22.14.57 api-goerli.etherscan.io" to /private/etc/hosts file, then "brew install proxychains-ng", and set "hardhat.config.js" file:

require("@nomiclabs/hardhat-waffle");
require("dotenv").config();
require("@nomiclabs/hardhat-etherscan");

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
    const accounts = await hre.ethers.getSigners();

    for (const account of accounts) {
        console.log(account.address);
    }
});

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        rinkeby: {
            url: process.env.RINKEBY_RPC_URL,
            accounts: [process.env.PRIVATE_KEY],
            chainId: 4,
        },
        goerli: {
            url: process.env.GOERLI_RPC_URL,
            accounts: [process.env.PRIVATE_KEY],
            chainId: 5,
        },
    },
    solidity: "0.8.8",
    etherscan: {
        apiKey: process.env.ETHERSCAN_API_KEY,
    },
};

// set proxy
// https://github.com/NomicFoundation/hardhat/issues/1280
// https://github.com/NomicFoundation/hardhat/pull/1291
const { ProxyAgent, setGlobalDispatcher } = require("undici");
const proxyAgent = new ProxyAgent("http://127.0.0.1:7890"); // change to yours
setGlobalDispatcher(proxyAgent);

then I run yarn through proxychains, somtimes have same error as above but somtimes have another errors:

$ proxychains4 yarn hardhat verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
[proxychains] config file found: /usr/local/etc/proxychains.conf
[proxychains] preloading /usr/local/Cellar/proxychains-ng/4.16/lib/libproxychains4.dylib
yarn run v1.22.15
$ '/Users/lightrao/Desktop/LightTechZen/Youbube/freeCodeCamp/full-blockchain-solidity-course-js/Lesson 6/hardhat-simple-storage-fcc/node_modules/.bin/hardhat' verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
Nothing to compile
Error in plugin @nomiclabs/hardhat-etherscan: Failed to obtain list of solc versions. Reason: Body Timeout Error

For more info run Hardhat with --show-stack-traces
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

$ proxychains4 yarn hardhat verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
[proxychains] config file found: /usr/local/etc/proxychains.conf
[proxychains] preloading /usr/local/Cellar/proxychains-ng/4.16/lib/libproxychains4.dylib
yarn run v1.22.15
$ '/Users/lightrao/Desktop/LightTechZen/Youbube/freeCodeCamp/full-blockchain-solidity-course-js/Lesson 6/hardhat-simple-storage-fcc/node_modules/.bin/hardhat' verify --network goerli 0x4A21A1C6eCEB20314a6427Fab60E017E5cC16365
Nothing to compile
Error in plugin @nomiclabs/hardhat-etherscan: Failed to send contract verification request.
Endpoint URL: https://api-goerli.etherscan.io/api
Reason: connect ECONNREFUSED 162.125.32.13:443

For more info run Hardhat with --show-stack-traces
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Can somebody help?

[lightrao]

I use proxifiyer solved the problem

[kimchi6666]

hi,I meet the same issue.Could you tell me how do you save the problem by using proxifiyer?