node.js 错误：连接 ECONNREFUSED； 来自服务器的响应

Question

I have a problem with this little program:

var http = require("http");
var request = http.request({
    hostname: "localhost",
    port: 8000,
    path: "/",
    method: "GET"
}, function(response) {
    var statusCode = response.statusCode;
    var headers = response.headers;
    var statusLine = "HTTP/" + response.httpVersion + " " +statusCode + " " + http.STATUS_CODES[statusCode];
    console.log(statusLine);
    for (header in headers) {
        console.log(header + ": " + headers[header]);
    }
    console.log();
    response.setEncoding("utf8");
    response.on("data", function(data) {
        process.stdout.write(data);
    });
    response.on("end", function() {
        console.log();
    });
});

The result in console is this:

events.js:141
      throw er; // Unhandled 'error' event
      ^

Error: connect ECONNREFUSED 127.0.0.1:8000
    at Object.exports._errnoException (util.js:870:11)
    at exports._exceptionWithHostPort (util.js:893:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1063:14)

I do not understand why this happens.

Answer 1

From your code, It looks like your file contains code that makes get request to localhost (127.0.0.1:8000).

The problem might be you have not created server on your local machine which listens to port 8000.

For that you have to set up server on localhost which can serve your request.

1. Create server.js

    var express = require('express'); var app = express(); app.get('/', function (req, res) { res.send('Hello World!'); // This will serve your request to '/'. }); app.listen(8000, function () { console.log('Example app listening on port 8000!'); });

2. Run server.js : node server.js

3. Run file that contains code to make request.

Answer 2

Please use [::1] instead of localhost, and make sure that the port is correct, and put the port inside the link.

const request = require('request');

   let json = {
        "id": id,
        "filename": filename
    };
    let options = {
        uri: "http://[::1]:8000" + constants.PATH_TO_API,
        // port:443,
        method: 'POST',
        json: json
    };
    request(options, function (error, response, body) {
        if (error) {
            console.error("httpRequests : error " + error);
        }
        if (response) {
            let statusCode = response.status_code;
            if (callback) {
                callback(body);
            }
        }
    });

Answer 3

I solved this problem with redis-server , you can install that like this!

sudo apt-get install redis-server

after that see the port and change it!

Answer 4

I had the same problem on my mac, but in my case, the problem was that I did not run the database (sudo mongod) before; the problem was solved when I first ran the mondo sudod on the console and, once it was done, on another console, the connection to the server ...

Answer 5

Just run the following command in the node project:

npm install

Its worked for me.

Answer 6

我运行了本地 mysql 数据库，但不是在管理员模式下，这引发了这个错误

Answer 7

If you have stopped the mongod.exe service from the task manager, you need to restart the service. In my case I stopped the service from task manager and on restart it doesn't automatically started.

Answer 8

I got this error because my AdonisJS server was not running before I ran the test. Running the server first fixed it.

Answer 9

just run the following command in the node project

npm install its worked for me

Answer 10

If this is the problem with connecting to the redis server (if your redis.createClient function does not work although you are sure that you have written the right parameters to the related function) , just simply type redis-server in another terminal screen. This probably gonna fix the issue.

PS: Sorry if this is a duplicate answer but there is no accepted answer, so, I wanted to share my solution too.

Answer 11

stop the nodemon and restart it.

Answer 12

This is very slight error. When I was implementing Event server between my processes on nodejs.

Just check for the package you're using to run your server like Axios .

Maybe you might have relocated the files or disconnected some cache data on the browsers.

It's simple ,In your relevant directory run the following command

I was using axios so I used

npm i axios

Restart the server

npm start

This will work.

Answer 13

use a proxy property in your code it should work just fine

const https = require('https');
const request = require('request');

request({
    'url':'https://teamtreehouse.com/chalkers.json',
    'proxy':'http://xx.xxx.xxx.xx'
    },
    function (error, response, body) {
        if (!error && response.statusCode == 200) {
            var data = body;
            console.log(data);
        }
    }
);