Fixed

  Sending data faster than a socket could transmit it wasn't handled
  correctly.

README.txt

@@ -19,6 +19,15 @@ To learn more, see http://packages.python.org/zc.ngi/
 Changes
 *******
 
+====================
+2.0.1 (2012-04-06)
+====================
+
+Bugs Fixed
+
+- Sending data faster than a socket could transmit it wasn't handled
+  correctly.
+
 ====================
 2.0.0 (2011-12-10)
 ====================

src/zc/ngi/async.py

@@ -397,7 +397,7 @@ def handle_write_event(self):
                     return # can't send any more
         finally:
             if nsend:
-                self.output[0:0] = tosend
+                output[0:0] = tosend
 
 
     def handle_close(self, reason='end of input'):

src/zc/ngi/async.test

@@ -47,15 +47,23 @@ shouldn't get any output.
     >>> _ = [thread.start() for thread in threads]
     >>> _ = [thread.join() for thread in threads]
 
+Large input
+===========
+
+    >>> import zc.ngi.blocking
+    >>> output, input = zc.ngi.blocking.open(addr, zc.ngi.async.connect,
+    ...                                      timeout=1.0)
+
+    >>> output.write('hello world\n' * 20000 + '\0')
+    >>> input.readline(timeout=1.0)
+    '20000 40000 240000\n'
+
 Iterable input
 ==============
 
 We can pass data to the server using an iterator.  To illustrate this,
 we'll use the blocking interface:
 
-    >>> import zc.ngi.blocking
-    >>> output, input = zc.ngi.blocking.open(addr, zc.ngi.async.connect,
-    ...                                      timeout=1.0)
     >>> def hello(name):
     ...     yield "hello\n"
     ...     yield name