初始化时，将您的后端服务器URL传递给socket.io客户端，如下所示：

import io from 'socket.io-client';

export const connect = () => {
  const socket = io("https://www.example.com/", { options });
  return socket;
};

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根据官方文档：https://socket.io/docs/v3/client-initialization/#from-a-different-domain