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

In my case Apache HTTP Server was run on port 80 I solved it by issue the command as root

sudo killall httpd

Update

If Jenkin is installed and running on your Mac;

1. You can check it with sudo lsof -i tcp:8080
2. If Yes, and You want to stop Jenkins only once, run: sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist