how to release localhost from Error: listen EADDRINUSE

Question

i am testing a server written in nodejs on windows 7 and when i try to run the tester in the command line i get the following error

Error: listen EADDRINUSE
         


        

Answer 1

suppose your server is running on port 3000

lsof -i tcp:3000
    COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
    node    11716 arun   11u  IPv6 159175      0t0  TCP *:3000 (LISTEN)

after that use kill -9

in the above case sudo kill -9 11716