[Twisted-Python] Triggering callbacks on raw file descriptors

[Itamar Shtull-Trauring]

On Sat, 2006-01-07 at 10:14 -0800, Brian Granger wrote:

> Digging around the source code, it looks like the FileDescriptor that  
> Port inherits from would be a good starting point.  But as I  
> understand it FileDescriptor is abstract.  Is it as simple as  
> inheriting from FileDescriptor and providing the fd that I get from  
> Bonjour?  How do I specify callbacks to trigger when the fd is  
> readable/writable?

Yep.

You just need a fileno() method that returns the file descriptor you are
wrapping, and doRead and doWrite methods that they do the appropriate
thing (they will get called by the reactor on those events.)