My socket server shuts down sometimes and I can't check why because there is no txt log where i could check last error messages, maybe there is way to write it in txt file after shutting down?
Invoke your program in the following way:
node myserver.js 2> error_log.txt
When the program closes the error_log txt will have all messages, including the error message that made the program crash written in it.
To also get all console.log messages you can do
node myserver.js > error_log.txt > 2>&1
(I used this command in the bash console on windows)