Receiving Error: xhr poll error socket.io client React

Question

当尝试连接到我的websocket网关时，我正在connect_error事件中接收Error: xhr poll error。我使用"socket.io-client": "^4.2.0"

import { io } from "socket.io-client";
const ENDPOINT = "http://localhost:3001";
const socket = io(ENDPOINT);
socket.on("connect_error", (e: any) => {
console.log(e);
});

Answer 1

您可以尝试将客户端连接设置为仅使用websocket传输。默认使用weboscket和轮询。

{
transports: ['websocket']
}

那么你的代码将变成:

const socket = io(ENDPOINT, {
transports: ['websocket']
});

Answer 2

setserver.listen代替

app.listen