From c372bd516862781f372fef352508d429620c418c Mon Sep 17 00:00:00 2001
From: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Date: Thu, 16 Feb 2017 11:27:36 +0000
Subject: xmlstream: Warn when the parser is None when data is received.

---
 slixmpp/xmlstream/xmlstream.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/slixmpp/xmlstream/xmlstream.py b/slixmpp/xmlstream/xmlstream.py
index 0b5a55e1..8daf99e4 100644
--- a/slixmpp/xmlstream/xmlstream.py
+++ b/slixmpp/xmlstream/xmlstream.py
@@ -358,6 +358,10 @@ class XMLStream(asyncio.BaseProtocol):
         event.  This could trigger one or more event (a stanza is received,
         the stream is opened, etc).
         """
+        if self.parser is None:
+            log.warning('Received data before the connection is established: %r',
+                        data)
+            return
         self.parser.feed(data)
         try:
             for event, xml in self.parser.read_events():
-- 
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