node address already in use code example

Example 1: EADDRINUSE: address already in use :::5000

sudo lsof -i :3000

Example 2: address already in use

# To see ports in use
sudo lsof -i -P -n | grep LISTEN 
sudo netstat -tulpn | grep LISTEN

Example 3: Error: listen EADDRINUSE: address already in use :::31641

ps aux | grep node //gets all the nodes and list of PID
kill -9 {PID}

Example 4: address already in use

comSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)