Fix calibre-server not exiting on ctrl+c on Windows

src/calibre/srv/loop.py

@@ -763,7 +763,12 @@ class EchoLine(Connection):  # {{{
 # }}}
 
 
-if __name__ == '__main__':
+def main():
+    print('Starting Echo server')
     s = ServerLoop(EchoLine)
-    with HandleInterrupt(s.wakeup):
+    with HandleInterrupt(s.stop):
         s.serve_forever()
+
+
+if __name__ == '__main__':
+    main()

src/calibre/srv/standalone.py

@@ -20,7 +20,7 @@ from calibre.srv.loop import BadIPSpec, ServerLoop
 from calibre.srv.manage_users_cli import manage_users_cli
 from calibre.srv.opts import opts_to_parser
 from calibre.srv.users import connect
-from calibre.srv.utils import RotatingLog
+from calibre.srv.utils import HandleInterrupt, RotatingLog
 from calibre.utils.config import prefs
 from calibre.utils.localization import localize_user_manual_link
 from calibre.utils.lock import singleinstance
@@ -188,7 +188,7 @@ def main(args=sys.argv):
         if getattr(opts, 'daemonize', False):
             raise SystemExit(
                 'Cannot specify --auto-reload and --daemonize at the same time')
-        from calibre.srv.auto_reload import auto_reload, NoAutoReload
+        from calibre.srv.auto_reload import NoAutoReload, auto_reload
         try:
             from calibre.utils.logging import default_log
             return auto_reload(default_log, listen_on=opts.listen_on)
@@ -241,7 +241,8 @@ def main(args=sys.argv):
     # Needed for dynamic cover generation, which uses Qt for drawing
     from calibre.gui2 import ensure_app, load_builtin_fonts
     ensure_app(), load_builtin_fonts()
-    try:
-        server.serve_forever()
-    finally:
-        shutdown_delete_service()
+    with HandleInterrupt(server.stop):
+        try:
+            server.serve_forever()
+        finally:
+            shutdown_delete_service()

src/calibre/srv/utils.py

@@ -391,7 +391,7 @@ class HandleInterrupt(object):  # {{{
     # On windows socket functions like accept(), recv(), send() are not
     # interrupted by a Ctrl-C in the console. So to make Ctrl-C work we have to
     # use this special context manager. See the echo server example at the
-    # bottom of this file for how to use it.
+    # bottom of srv/loop.py for how to use it.
 
     def __init__(self, action):
         if not iswindows:
@@ -414,12 +414,7 @@ class HandleInterrupt(object):  # {{{
                 if self.action is not None:
                     self.action()
                     self.action = None
-                # Typical C implementations would return 1 to indicate that
-                # the event was processed and other control handlers in the
-                # stack should not be executed.  However, that would
-                # prevent the Python interpreter's handler from translating
-                # CTRL-C to a `KeyboardInterrupt` exception, so we pretend
-                # that we didn't handle it.
+                    return 1
             return 0
         self.handle = handle