allow event names with hyphens

Fixes #51

socketio/server.py

@@ -149,8 +149,6 @@ def message_handler(sid, msg):
         client's acknowledgement callback function if it exists. The
         ``'disconnect'`` handler does not take a second argument.
         """
-        if '-' in event:
-            raise ValueError('event names cannot contain hypens')
         namespace = namespace or '/'
 
         def set_handler(handler):

tests/test_packet.py

@@ -117,6 +117,17 @@ def test_decode_namespace_with_hyphens(self):
         self.assertEqual(pkt.namespace, '/b-a-r')
         self.assertEqual(pkt.encode(), '2/b-a-r,["foo"]')
 
+    def test_encode_event_with_hyphens(self):
+        pkt = packet.Packet(packet_type=packet.EVENT,
+                            data=[six.text_type('f-o-o')])
+        self.assertEqual(pkt.namespace, None)
+        self.assertEqual(pkt.encode(), '2["f-o-o"]')
+
+    def test_decode_event_with_hyphens(self):
+        pkt = packet.Packet(encoded_packet='2["f-o-o"]')
+        self.assertEqual(pkt.namespace, None)
+        self.assertEqual(pkt.encode(), '2["f-o-o"]')
+
     def test_encode_id(self):
         pkt = packet.Packet(packet_type=packet.EVENT,
                             data=[six.text_type('foo')], id=123)

tests/test_server.py

@@ -48,10 +48,6 @@ def bar():
         self.assertEqual(s.handlers['/']['disconnect'], bar)
         self.assertEqual(s.handlers['/foo']['disconnect'], bar)
 
-    def test_on_bad_event_name(self, eio):
-        s = server.Server()
-        self.assertRaises(ValueError, s.on, 'two-words')
-
     def test_emit(self, eio):
         mgr = mock.MagicMock()
         s = server.Server(client_manager=mgr)