[Twisted-Python] Multiple main loops

[glyph at divmod.com]

On Wed, 03 May 2006 20:32:26 -0300, David Pratt <fairwinds at eastlink.ca> wrote:
>Hi Phil. I am pleased about the zope and twisted integrated in zope3. I 
>believe there can be a tighter integration and additional benefits. Zope 
>currently uses a twisted loop to run the application and an asyncore loop 
>for zeo communication. These are both initialized at start up. What I would 
>like to see, is ansyncore replaced with a second twisted loop. I would also 
>like the zeo server to be a twisted app that runs zrpc. Twisted's ssh and 
>ssl support would be used to secure client / server communication.

Why is a second event-loop necessary here?