Use existing generic way to ignore AcceptIdentification on closed connections

neo/lib/handler.py

@@ -152,11 +152,6 @@ class EventHandler(object):
             acceptIdentification = self._acceptIdentification
         except AttributeError:
             raise UnexpectedPacketError('no handler found')
-        if conn.isClosed():
-            # acceptIdentification received on a closed (probably aborted,
-            # actually) connection. Reject any further packet as unexpected.
-            conn.setHandler(EventHandler(self.app))
-            return
         node = self.app.nm.getByAddress(conn.getAddress())
         assert node.getConnection() is conn, (node.getConnection(), conn)
         if node.getType() == node_type:

neo/lib/protocol.py

@@ -1673,7 +1673,7 @@ class Packets(dict):
     Error = register(
                     Error)
     RequestIdentification, AcceptIdentification = register(
-                    RequestIdentification)
+                    RequestIdentification, ignore_when_closed=True)
     # Code of RequestIdentification packet must never change so that 2
     # incompatible nodes can reject themselves gracefully (i.e. comparing
     # protocol versions) instead of raising PacketMalformedError.