How to load a URL only if it exists in a batch file using curl for windows?

Question

I am trying to shutdown a service running running locally by using URL like 'localhost:3502/shutdown' using curl.

I give curl 'localhost:3502/shutdown'. But I need to do this only if the service is still running. Else I should not.

I wanna do it in a batch file for windows.

Any help/suggestions?

Answer 1

netstat -p tcp -n -a | findstr /b /r /c:"  TCP[ ]*[0-9.]*:3502 " >nul && (
     curl http://localhost:3502/shutdown
)

I am not sure how you want to determine if the service is running. Maybe this can work. This code checks for existence of the listening port.