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-rw-r--r--synapse/http/server.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/synapse/http/server.py b/synapse/http/server.py
index 0df1bfbe..897ba5e4 100644
--- a/synapse/http/server.py
+++ b/synapse/http/server.py
@@ -563,7 +563,10 @@ class _ByteProducer:
try:
self._request.registerProducer(self, True)
- except RuntimeError as e:
+ except AttributeError as e:
+ # Calling self._request.registerProducer might raise an AttributeError since
+ # the underlying Twisted code calls self._request.channel.registerProducer,
+ # however self._request.channel will be None if the connection was lost.
logger.info("Connection disconnected before response was written: %r", e)
# We drop our references to data we'll not use.