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In addition to "[ 909005 ] asyncore fixes and improvements"
and CVS
version "asyncore.py,v 2.51" this patch provides:

* Added handling of buffered socket layer (pending_read(),
  pending_write()).
* Added fd number for __repr__.
* Initialized self.socket = socket._closedsocket() instead
of None
  for verbose error output (like closed socket.socket).
* asyncore and asynchat implements idispatcher and iasync_chat.
* Fixed self.addr initialization.
* Removed import exceptions.
* Don't filter KeyboardInterrupt, just pass through.
* Added queue of sockets, solves the problem of select() on
too many
  descriptors.

I have run make test in python cvs distrib without problems.
Examples of using i* included.