Index: asynchat.py
===================================================================
--- asynchat.py	(revision 67040)
+++ asynchat.py	(working copy)
@@ -183,11 +183,21 @@
                 self.producer_fifo.append(data[i:i+sabs])
         else:
             self.producer_fifo.append(data)
-        self.initiate_send()
+        try:
+            self.initiate_send()
+        except (asyncore.ExitNow, KeyboardInterrupt, SystemExit):
+            raise
+        except:
+            self.handle_error()
 
     def push_with_producer (self, producer):
         self.producer_fifo.append(producer)
-        self.initiate_send()
+        try:
+            self.initiate_send()
+        except (asyncore.ExitNow, KeyboardInterrupt, SystemExit):
+            raise
+        except:
+            self.handle_error()
 
     def readable (self):
         "predicate for inclusion in the readable for select()"