Brian's Blog twisted

I just finished building a Trac instance for Foolscap, now online at http://foolscap.lothar.com/trac . It's got a (mercurial-based) code browser, tickets, and a wiki.

Setting it up required some twisted.web hacking, because my setup puts a twisted.web server out front, and reverse-proxies certain requests to …

Zooko's in town, and already I feel 20% smarter. I roped him into a discussion about the Promise syntax I'm developing for Foolscap, and he suggested an alternative that has some good properties.

I'll illustrate with an example where promise-pipelining actually does you some good. (many of the use cases …

Aaaagh! Promises are hurting my brain.

I'm trying to figure out how to provide a useful subset of E's reference mechanics in newpb/foolscap. Specifically, one of the clever things that E does is to provide Promise Pipelining, a limited form of remote code execution, in which I can ask …

I finally got some twisted time this weekend, so I fixed ticket #1999 and moved newpb out of the Twisted subdirectory entirely, renaming it to Foolscap in the process. I also released version 0.0.2, so there's a complete tarball ready to install and play with.

Having it live …

Had a great chat with Donovan today, about newpb and E and secure python and concurrency management. It turns out we have some of the same ideas about interesting things to do with these kinds of tools. He pointed me at a language named Io that's doing some neat stuff …

Spent another great day down at HP, talking about implementing E and web-calculus concepts within Twisted and newpb. Tyler Close was kind enough to spend the entire afternoon with me, explaining how his web-calculus works and the design decisions behind it. I'm really excited about implenting this stuff in newpb …

So I think the talk went really well. I spoke for about an hour before the room was needed for another meeting, to about 10 or 15 OSAF developers. I managed to cover the reactor, Protocols, Factories, building higher-level protocols, Failures, Deferreds, reactor.run() vs twistd -y vs mktap/twistd …

This is a rough outline of the talk I'll be giving at the OSAF tomorrow.

definition of Twisted, resources:
 http://www.twistedmatrix.com
  svn://svn.twistedmatrix.com/svn/Twisted/trunk
  http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
  http://twistedmatrix.com/bugs/
  http://twistedmatrix.com/buildbot/
 #twisted, #twisted.web on freenode …