add /ws/2/notify/ socket

core/mail/socket.py

@@ -0,0 +1,31 @@
+from abc import ABCMeta
+
+from aiosmtpd.controller import BaseController, UnixSocketMixin
+from aiosmtpd.lmtp import LMTP
+
+
+class BaseAsyncController(BaseController, metaclass=ABCMeta):
+    def __init__(
+            self,
+            handler,
+            loop,
+            **SMTP_parameters,
+    ):
+        super().__init__(
+            handler,
+            loop,
+            **SMTP_parameters,
+        )
+
+    def serve(self):
+        return self._create_server()
+
+
+class UnixSocketLMTPController(UnixSocketMixin, BaseAsyncController):
+    def factory(self):
+        return LMTP(self.handler)
+
+    def _trigger_server(self):  # pragma: no-unixsock
+        # Prevent confusion on which _trigger_server() to invoke.
+        # Or so LGTM.com claimed
+        UnixSocketMixin._trigger_server(self)