How to fix Error: listen EADDRINUSE while using nodejs?

Question

If I run a server with the port 80, and I try to use xmlHTTPrequest i get this error: Error: listen EADDRINUSE

Why is it problem for nodejs, if I want t

Answer 1

EADDRINUSE means that the port(which we try to listen in node application) is already being used. In order to overcome, we need to identify which process is running with that port.

For example if we are trying to listen our node application in 3000 port. We need to check whether that port is already is being used by any other process.

step1:

$sudo netstat -plunt |grep :3000

That the above command gives below result.

tcp6       0      0 :::3000                 :::*                    LISTEN      25315/node

step2:

Now you got process ID(25315), Kill that process.

kill -9 25315

step3:

npm run start

Note: This solution for linux users.