Error: listen EADDRINUSE: address already in use :::8080 while clicking on run script

Question

Firstly I run this command (npm ndb server.js) then a debugging chrome window appear and after this Actually, I got these error when I am trying to debug in my code and I clicked on run script after that a debugging chrome window appear then it give these wired error.

     throw er; // Unhandled 'error' event
  ^

Error: listen EADDRINUSE: address already in use :::8080
at Server.setupListenHandle [as _listen2] (net.js:1279:14)
at listenInCluster (net.js:1327:12)
at Server.listen (net.js:1414:7)
at Function.listen (C:\Users\Abhishek kumar\natours\node_modules\express\lib\application.js:618:24)
at Object.<anonymous> (C:\Users\Abhishek kumar\natours\server.js:24:5)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
Emitted 'error' event at:
at emitErrorNT (net.js:1306:8)
at process._tickCallback (internal/process/next_tick.js:63:19)
at Function.Module.runMain (internal/modules/cjs/loader.js:834:11)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)

@Abhishek Kumar you might have tried to rerun your server or some other process might be using that port — Sudhakar Ramasamy, Oct 07 '19 at 14:18
There is one server instance is already running which is using port 8080. — Aritra Chakraborty, Oct 07 '19 at 14:19
https://stackoverflow.com/a/23718720/1203844 follow this. end the process where you see port is 8080. — Aritra Chakraborty, Oct 07 '19 at 14:32
https://stackoverflow.com/questions/4075287/node-express-eaddrinuse-address-already-in-use-kill-server Please check — Parth Raval, Oct 09 '19 at 05:20

score 0 · Answer 1 · edited Oct 08 '19 at 19:23

The error is quite explicit :

Error: listen EADDRINUSE: address already in use :::8080

means that some program is already listening on port 8080 (and you have an extra hint : the ::: says that it's listening on broadcast host using IPv6).

If you're curious what program is listening on that port, you could try to navigate to http://localhost:8080 and see what's displayed. If nothing is displayed then it's not one of your web apps. Maybe you have an HTTP proxy running on your machine (I have recently come across a malware that ran mitmproxy on target machines on port 8080 to intercept all traffic).

On Mac or Linux you can use lsof to get more information on the program listening on that port.

The command you want is :

$ sudo lsof -i :8080

score 0 · Answer 2 · answered Oct 08 '19 at 19:24

0

Run this command.

killall node

answered Oct 08 '19 at 19:24

Ankit Kumar Rajpoot

3,495
23
22

What operating system are you answering for? – Jason Aller Oct 09 '19 at 02:08
The comments below the question reveal that OP is using Windows 10. – Jason Aller Oct 09 '19 at 04:26
Try this for window- taskkill /im node.exe – Ankit Kumar Rajpoot Oct 09 '19 at 04:54

Error: listen EADDRINUSE: address already in use :::8080 while clicking on run script

2 Answers2