Metis Stardust WebSocket issue test scripts

00-token_read.mjs

// node --experimental-json-modules read.mjs
// node 17 only

import { ethers } from "ethers";
import { readFile } from "fs/promises";
import ERC20ABI from "./ERC20.json" assert { type: "json" };

const privateKey = await readFile("key.txt", { encoding: "utf-8" });
const rpcclient = new ethers.providers.WebSocketProvider(
  "wss://stardust-ws.metis.io/"
);
const wallet = new ethers.Wallet(privateKey, rpcclient);

const token = new ethers.Contract(
  "0x844C472e6f0950a65276ffAE9503Ba309C36EF3E",
  ERC20ABI,
  wallet
);

process.on("SIGINT", () => token.removeAllListeners());

token.on("Transfer", (from, to, amount) => {
  console.log(from, to, amount);
});

01-token_write.mjs

// node --experimental-json-modules read.mjs
// node 17 only

import { BigNumber, ethers } from "ethers";
import { setTimeout } from "timers/promises";
import { readFile } from "fs/promises";
import ERC20ABI from "./ERC20.json" assert { type: "json" };

const privateKey = await readFile("key.txt", { encoding: "utf-8" });
const rpcclient = new ethers.providers.WebSocketProvider(
  "wss://stardust-ws.metis.io/"
);
const wallet = new ethers.Wallet(privateKey, rpcclient);

const token = new ethers.Contract(
  "0x844C472e6f0950a65276ffAE9503Ba309C36EF3E",
  ERC20ABI,
  wallet
);

const ac = new AbortController();
process.on("SIGINT", ac.abort.bind(ac));

const stopped = new Promise((res) => {
  ac.signal.addEventListener("abort", () => res(true));
});

let shutdown = false;
while (!shutdown) {
  const tx = await token.transfer(
    wallet.address,
    BigNumber.from(Math.trunc(Math.random() * 1000))
  );
  const txr = await tx.wait(1);
  console.log("Tx", tx.hash, "is comfirmed at", txr.blockNumber);
  shutdown = await Promise.race([
    stopped,
    setTimeout(5000, false, { signal: ac.signal }),
  ]);
}

ERC20.json

[
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "from",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "Transfer",
    "type": "event"
  },
  {
    "inputs": [],
    "name": "decimal",
    "outputs": [
      {
        "internalType": "uint8",
        "name": "",
        "type": "uint8"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "symbol",
    "outputs": [
      {
        "internalType": "string",
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "to",
        "type": "address"
      },
      {
        "internalType": "uint256",
        "name": "amount",
        "type": "uint256"
      }
    ],
    "name": "transfer",
    "outputs": [
      {
        "internalType": "bool",
        "name": "",
        "type": "bool"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  }
]

ERC20.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;


contract ERC20 {
    string public constant symbol = "ERC20";
    uint8 public constant decimal = 2;

    event Transfer(address indexed from, address indexed to, uint256 indexed amount);

    function transfer(address to, uint256 amount) public returns (bool) {
        emit Transfer(msg.sender, to, amount);
        return true;
    }
}