Close port with host JS

Question

I am learning nodeJS. When I write a program that listens on a port, say 8081, and then write another program that listens on the same port, I will get this type of error message:

Error: listen EADDRINUSE
    at errnoException (net.js:901:11)
    at Server._listen2 (net.js:1039:14)
    at listen (net.js:1061:10)
    at Server.listen (net.js:1127:5)
    at Object.<anonymous> (C:\NetBeansWorkPlace\nodeJS_Files\TutsNodeJS\static_file_server.js:36:4)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

I found that the port is in use, but how can I clear the port or stop listening to the application on this port? Thank you Wbr

Answer 1

The easiest way is to change the port number in the javascript file.

If you want to close the port just do this (mac solution) open terminal

1) sudo lsof -i:

a table will be displayed that looks for the PID in this table for your port

2) sudo kill -9 PID

Answer 2

Here are your options:

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