Port the simple SMTP server to aiosmtpd. It's untested but at least a…

…llows some test suites to pass.

jaraco/email/smtp.py

@@ -1,26 +1,26 @@
-import smtpd
-import asyncore
+import asyncio
 import argparse
 
+from aiosmtpd.controller import Controller
+
 
 def _get_args():
     p = argparse.ArgumentParser()
     p.add_argument('-p', '--port', type=int, help="Bind to port", default=25)
     return p.parse_args()
 
 
-class DebuggingServer(smtpd.DebuggingServer):
-    def process_message(self, peer, mailfrom, rcpttos, data):
-        # seriously, why doesn't a debugging server just print everything?
-        print('peer:', peer)
-        print('mailfrom:', mailfrom)
-        print('rcpttos:', rcpttos)
-        smtpd.DebuggingServer.process_message(self, peer, mailfrom, rcpttos, data)
+class DebuggingHandler:
+    async def handle_DATA(self, server, session, envelope):
+        print('peer:', session.peer)
+        print('mailfrom:', envelope.mail_from)
+        print('rcpttos:', envelope.rcpt_tos)
+        return '250 OK'
 
 
 def start_simple_server():
     "A simple mail server that sends a simple response"
     args = _get_args()
-    addr = ('', args.port)
-    DebuggingServer(addr, None)
-    asyncore.loop()
+    controller = Controller(DebuggingHandler(), hostname='', port=args.port)
+    controller.start()
+    asyncio.new_event_loop().run_forever()

setup.cfg

@@ -20,6 +20,7 @@ install_requires =
 	jaraco.text>=1.3
 	jaraco.collections
 	keyring
+	aiosmtpd
 
 [options.packages.find]
 exclude =