* fix(watchdog): Add functions to avoid dangling file descriptors
* Change function name and add comment under core/endpoint.go
- change the function name of CloseHTTPConnection() to Close()
- add some comments above Close() function
* Update core/endpoint.go
* Update core/endpoint.go
---------
Co-authored-by: Richard Cheng <richard_cheng@trendmicro.com>
Co-authored-by: TwiN <twin@linux.com>