Errors in browser console, requests to /sockjs-node/info?t=1555629946494

Question

I created a new site using vue-cli. I'm using the development server to serve the page. When I view the page in my browser, I see two types of errors show up in my browser console:

GET http://172.31.7.153:4000/sockjs-node/info?t=1555922702538 net::ERR_CONNECTION_TIMED_OUT
GET http://localhost:4000/sockjs-node/info?t=1555922708541 net::ERR_CONNECTION_REFUSED

I'm not sure what it means, or how/why it's being called, and it shows up repeatedly about every 5 seconds.

Answer 1

I finally fixed it using the devServer.public configuration option.

Below is my vue.config.js file:

module.exports = {
    devServer: {
        disableHostCheck: true,
        port: 4000,
        public: '0.0.0.0:4000'
    },
    publicPath: "/"
}

I got my answer from reading this.