rapidsms-idswitch.patch

diff --git a/lib/rapidsms/message.py b/lib/rapidsms/message.py
index 6d55978..186e36b 100644
--- a/lib/rapidsms/message.py
+++ b/lib/rapidsms/message.py
@@ -55,7 +55,15 @@ class Message(object):
     def send(self):
         """Send this message via self.connection.backend, returning
            True if the message was sent successfully."""
-        return self.connection.backend.router.outgoing(self)
+        # apply idswitch function if exists
+        try:
+            xc  = copy.copy(self.connection)
+            m = Message(connection=xc, text=self.text, person=self.person, date=self.date)
+            m.connection.identity = self.idswitch(m)
+            return m.connection.backend.router.outgoing(m)
+        except AttributeError:
+            pass
+            return self.connection.backend.router.outgoing(self)
 
     def flush_responses (self):
         """Sends all responses added to this message (via the