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.

try:
    from html import escape as html_escape_  # python 3

    def html_escape(str, quote=False):
        # html_escape under python 3 sets quote to true by default
        # make it python 2 compatible
        return html_escape_(str, quote=quote)
except ImportError:
    # python 2 fallback
    from cgi import escape as html_escape  # noqa: F401