send connect packet before invoking connect handler

socketio/asyncio_server.py

@@ -368,17 +368,17 @@ class AsyncServer(server.Server):
         """Handle a client connection request."""
         namespace = namespace or '/'
         self.manager.connect(sid, namespace)
+        await self._send_packet(sid, packet.Packet(packet.CONNECT,
+                                                   namespace=namespace))
         if await self._trigger_event('connect', namespace, sid,
                                      self.environ[sid]) is False:
-            self.manager.disconnect(sid, namespace)
-            await self._send_packet(sid, packet.Packet(packet.ERROR,
+            self.manager.pre_disconnect(sid, namespace)
+            await self._send_packet(sid, packet.Packet(packet.DISCONNECT,
                                                        namespace=namespace))
+            self.manager.disconnect(sid, namespace)
             if sid in self.environ:  # pragma: no cover
                 del self.environ[sid]
             return False
-        else:
-            await self._send_packet(sid, packet.Packet(packet.CONNECT,
-                                                       namespace=namespace))
 
     async def _handle_disconnect(self, sid, namespace):
         """Handle a client disconnect."""

socketio/server.py

@@ -530,17 +530,17 @@ class Server(object):
         """Handle a client connection request."""
         namespace = namespace or '/'
         self.manager.connect(sid, namespace)
+        self._send_packet(sid, packet.Packet(packet.CONNECT,
+                                             namespace=namespace))
         if self._trigger_event('connect', namespace, sid,
                                self.environ[sid]) is False:
-            self.manager.disconnect(sid, namespace)
-            self._send_packet(sid, packet.Packet(packet.ERROR,
+            self.manager.pre_disconnect(sid, namespace)
+            self._send_packet(sid, packet.Packet(packet.DISCONNECT,
                                                  namespace=namespace))
+            self.manager.disconnect(sid, namespace)
             if sid in self.environ:  # pragma: no cover
                 del self.environ[sid]
             return False
-        else:
-            self._send_packet(sid, packet.Packet(packet.CONNECT,
-                                                 namespace=namespace))
 
     def _handle_disconnect(self, sid, namespace):
         """Handle a client disconnect."""

tests/asyncio/test_asyncio_server.py

@@ -295,7 +295,8 @@ class TestAsyncServer(unittest.TestCase):
         self.assertEqual(s.manager.connect.call_count, 1)
         self.assertEqual(s.manager.disconnect.call_count, 1)
         self.assertEqual(s.environ, {})
-        s.eio.send.mock.assert_called_once_with('123', '4', binary=False)
+        s.eio.send.mock.assert_any_call('123', '0', binary=False)
+        s.eio.send.mock.assert_any_call('123', '1', binary=False)
 
     def test_handle_connect_namespace_rejected(self, eio):
         eio.return_value.send = AsyncMock()
@@ -308,7 +309,8 @@ class TestAsyncServer(unittest.TestCase):
         self.assertEqual(s.manager.connect.call_count, 2)
         self.assertEqual(s.manager.disconnect.call_count, 1)
         self.assertEqual(s.environ, {})
-        s.eio.send.mock.assert_any_call('123', '4/foo', binary=False)
+        s.eio.send.mock.assert_any_call('123', '0/foo', binary=False)
+        s.eio.send.mock.assert_any_call('123', '1/foo', binary=False)
 
     def test_handle_disconnect(self, eio):
         eio.return_value.send = AsyncMock()

tests/common/test_server.py

@@ -239,7 +239,8 @@ class TestServer(unittest.TestCase):
         self.assertEqual(s.manager.connect.call_count, 1)
         self.assertEqual(s.manager.disconnect.call_count, 1)
         self.assertEqual(s.environ, {})
-        s.eio.send.assert_called_once_with('123', '4', binary=False)
+        s.eio.send.assert_any_call('123', '0', binary=False)
+        s.eio.send.assert_any_call('123', '1', binary=False)
 
     def test_handle_connect_namespace_rejected(self, eio):
         mgr = mock.MagicMock()
@@ -250,7 +251,8 @@ class TestServer(unittest.TestCase):
         s._handle_eio_message('123', '0/foo')
         self.assertEqual(s.manager.connect.call_count, 2)
         self.assertEqual(s.manager.disconnect.call_count, 1)
-        s.eio.send.assert_any_call('123', '4/foo', binary=False)
+        s.eio.send.assert_any_call('123', '0/foo', binary=False)
+        s.eio.send.assert_any_call('123', '1/foo', binary=False)
 
     def test_handle_disconnect(self, eio):
         mgr = mock.MagicMock()