19节mempool中，如有用ethers v6版本， 捕获 websocket异常是如何处理呢？

[256yangwei]

console.log("\n1. 连接 wss RPC")
// 准备 alchemy API 可以参考https://github.com/AmazingAng/WTFSolidity/blob/main/Topics/Tools/TOOL04_Alchemy/readme.md
const ALCHEMY_MAINNET_WSSURL = 'wss://eth-mainnet.g.alchemy.com/v2/oKmOQKbneVkxgHZfibs-iFhIlIAl6HDN';
const provider = new ethers.providers.WebSocketProvider(ALCHEMY_MAINNET_WSSURL);
let i =0
provider.on("pending", async (txHash) => {
if (txHash && i < 100) {
// 打印txHash
console.log([${(new Date).toLocaleTimeString()}] 监听Pending交易 ${i}: ${txHash} \r);
i++
}
});
provider ._websocket.on("error", async () => {
console.log(Unable to connect to ${ep.subdomain} retrying in 3s...);
setTimeout(listen_address, 3000);
});
provider ._websocket.on("close", async (code) => {
console.log(
Connection lost with code ${code}! Attempting reconnect in 3s...
);
provider ._websocket.terminate();
setTimeout(listen_address, 3000);
});

求问一下，在第19节 Mempool里，如果是在 ethers v5里，以上的 provider ._websocket.on("error", async () => {}）;代码是可以正常捕获错误，延时后继续推送交易的；
但是在ethers V6里provider 定义变了 const provider = new ethers.WebSocketProvider(ALCHEMY_MAINNET_WSSURL);然后这个捕获异常provider ._websocket.on("error", async () => {}）就不能用了，请问V6里捕获websocket error是怎么用的呢？谢谢大佬，往不吝赐教！