diff --git a/third_party/tlslite/tlslite/tlsrecordlayer.py b/third_party/tlslite/tlslite/tlsrecordlayer.py
index 6ef3895..3584726 100644
--- a/third_party/tlslite/tlslite/tlsrecordlayer.py
+++ b/third_party/tlslite/tlslite/tlsrecordlayer.py
@@ -288,7 +288,9 @@ class TLSRecordLayer(object):
         except GeneratorExit:
             raise
         except Exception:
-            self._shutdown(False)
+            # Don't invalidate the session on write failure if abrupt closes are
+            # okay.
+            self._shutdown(self.ignoreAbruptClose)
             raise
 
     def close(self):