fix: exit quickly on keyboard interrupt When exiting roundup_server (issue was seen in use of roundup_demo) using ^C, the keyboard interrupt message is generated but the application didn't exit until the 60 second socket timeout is complete. This seems to be more of an issue with Windows. With this change the socket is explicitly shut down telling the client what's happening. Then the file descriptor is closed.

#!/usr/bin/env python

# Roundup requires Python 2.7+ as mentioned in doc\installation.txt
from __future__ import print_function
import sys

VERSION_NEEDED = (2, 7)

if sys.version_info < VERSION_NEEDED:
    print("Content-Type: text/plain\n")
    print("Roundup requires Python %s.%s or newer." % VERSION_NEEDED)
    sys.exit(0)