From 4a54edb2caa3a1ec22cded64d7c3e0200802c2b5 2013-07-06 05:17:40
From: MinRK <benjaminrk@gmail.com>
Date: 2013-07-06 05:17:40
Subject: [PATCH] warn about messages dropped due to oversize

---

diff --git a/IPython/html/services/kernels/handlers.py b/IPython/html/services/kernels/handlers.py
index 5eb456e..701a054 100644
--- a/IPython/html/services/kernels/handlers.py
+++ b/IPython/html/services/kernels/handlers.py
@@ -112,6 +112,10 @@ class ZMQChannelHandler(AuthenticatedZMQStreamHandler):
         if len(msg) < self.max_msg_size:
             msg = jsonapi.loads(msg)
             self.session.send(self.zmq_stream, msg)
+        else:
+            self.log.warn("Dropping oversized message: %iB > %iB (NotebookApp.max_msg_size)",
+                len(msg), self.max_msg_size
+            )
 
     def on_close(self):
         # This method can be called twice, once by self.kernel_died and once