Mailman 3 November 2001 - Twisted

[Twisted-Python] Tiny bug in echoserv_threaded.py example
by Andrew Bennetts Nov. 9, 2001

Nov. 9, 2001

echoserv_threaded.py doesn't work with 1.5.2. Here's a trivial patch to fix it: --- echoserv_threaded.py Sat Nov 10 02:07:34 2001 +++ echoserv_threaded_fixed.py Sat Nov 10 02:06:32 2001 @@ -55,7 +55,7 @@ class Echo(Protocol): def connectionMade(self): - self.messagequeue = Queue.Queue() + self.messagequeue = Queue.Queue(0) self.handler = Handler(self) self.handler.start() Regards, -Andrew.

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[Twisted-Python] Sped-up banana
by Elliot Lee Nov. 8, 2001

Nov. 8, 2001

The encoder redone in C, and handles 'long' numbers correctly. At radix' request, -- Elliot

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[Twisted-Python] Rocks - Reliable Sockets
by Itamar Shtull-Trauring Nov. 8, 2001

Nov. 8, 2001

<http://www.cs.wisc.edu/~zandy/rocks/>

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[Twisted-Python] suggestions for changes to PB
by Itamar Shtull-Trauring Nov. 7, 2001

Nov. 7, 2001

Refactoring: 1) For clarity's sake, turn pb into a package: pb.local pb.remote pb.protocol 2) the methods for connecting to a server assume you are using TCP - they should use the new connectTCP, connectSSL, etc. API when we do *that* refactor. Added functionality: 1) Use SRP instead of whatever the current challenge/response is - see http://www-cs-students.stanford.edu/~tjw/srp/. 2) Make a login system that uses X.509 certificates for identities (SSL only). 3) Look at SPKI … [View More]

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[Twisted-Python] Film At 11
by Glyph Lefkowitz Nov. 7, 2001

Nov. 7, 2001

This conversation has been edited for length, to fit your screen, and, in some cases, content: <itamar> hi glyph <glyph> hit itamar <glyph> hi itamar, even ;) <itamar> I'm glad to say we now have java interop <glyph> itamar: So I read from the list <itamar> now's about the point where I could use some help <itamar> not that that's gonna happen <glyph> itamar: So I thought of another cool hack that you might want to work on <glyph> totally … [View More]unrelated to java ;) <itamar> yes? <glyph> itamar: Don't run away -- <glyph> "The configuration system" <itamar> mmm <glyph> itamar: I just had a conversation about it last night. <itamar> what exactly where you thinking of? <glyph> itamar: Let me ramble about vision for a moment (you'll probably see this in an email sometime soon, too) <itamar> ok <glyph> Twisted isn't a particularly great webserver, when you compare functionality blow-for-blow with apache. It's not a great chatserver, when it has to slug it out with ircd. But we all like Twisted more than either of those -- why? <glyph> Well, because it's an IRC server *and* a web server. <itamar> right <glyph> What makes Twisted special is the degree of integration that it allows for all its services. <glyph> However, this integration is effectively lost to anyone who isn't a programmer (and to some extent, to anyone who isn't already rather familiar with the codebase) because there's no metaphor for the integration. Everything is rather concrete, speaking in terms of file descriptors and delayed events and what-have-you. <itamar> glyph: ok - <glyph> With the refactoring that we're talking about, centering around t.i.m.A, there is going to be at least a common metaphor for what stuff connects to what bit of the network... <itamar> right <glyph> The configuration application that I envision has a unified notion of the "things that do stuff", although I haven't come up with a good name for them. Zope-like, you'll have a menu to create an object of lots of different types (like a Words service, a mail service, a web site, etc), some of which listen on ports directly, some of which are indirectly connected to the network through PB publishers or web resources. <itamar> well, meanwhile it sounds like a mktap with a slightly better UI <glyph> itamar: the use-case that I'm thinking of for it is creating a web site and a words service, hooking up a tendril to a persistent IRC server, creating a personal website and mounting the registration and userlist widgets somewhere within your personal web space. <itamar> hmmm... a configuration tool for web would be quite nice for starters, yes <glyph> itamar: Note that I mention spawning a tendril as well -- one of the goals of this tool would be to unify mktap and im. You really ought to just create a "persistent outgoing chat connection w/ Tkinter UI" as an object, put it in your tap, and have it run in your personal twistd server <glyph> itamar: this would also clearly define the role of "plugins" -- they are code which adds stuff to that menu of base types of objects one can create <glyph> I'm inclined to say that for starters, each object defines its own web form that allows you to configure it <itamar> how would you model something that connects web and a words service? <itamar> this is where you start wishing for a 3d gui <glyph> itamar: optimally, yeah, you'd have something like a 3D visio where you could dynamically drag connections <itamar> actually a 2d one would do <glyph> but working with "web form" as the metaphor, there's still quite a lot you can do :) <itamar> where you drag lines from a object to another <glyph> when you create a words service, it publishes several web objects, none of which are connected to anything <glyph> so when you go to a page that wants to pop up a list of possible objects you could add as a web resource, those appear. <glyph> It's like your application has a "bag" of sub-objects that you "carry around" in the configuration interface <itamar> I like it. of course my innate dislike of web (or GUI, for that matter) programming is getting in the way. <itamar> but it would be good for my software as well, since it has all these pluggable components you need to mix and match <itamar> and then there's monitoring components (web, nt performance monitor) <itamar> and logging components (syslog, file, nt log) <glyph> itamar: Yeah. The reason that this configuration thing came to me is because someone who was asked to do a technical evaluation of Twisted, upon completing his evaluation, had only one thing to say <glyph> "What is it *for*?" <itamar> what? <itamar> what is what for? <glyph> itamar: What is Twisted for. <sayke> glyph: that was my response. "that's a damn impressive kitchen sink ya got there" ;) <glyph> itamar: and I realized that *this* is what Twisted is for. Even though we don't have a very good metaphor for it or interface to it, no other server framework even aspires to this sort of integrated environment. <glyph> There are a few "java Application servers" that make-believe, except that they ONLY do web, and ONLY for business, and severely limit the sort of apps you can write with them. <itamar> yeah, or Zope, which has ftp/http/webdav/xmlrpc, but attempts to add nttp or imap have failed <glyph> itamar: ftp/http/webdav/xmlrpc are still all just ways of publishing structured documents <glyph> itamar: they're not fundamentally different ways of interacting with the system <itamar> yeah <glyph> itamar: nntp and imap, strangely enough, are :) <itamar> well, actually, there's a irc bot written for zope <itamar> on to concretes - is there any way we can do without a web interface? <glyph> itamar: well, a first step in this direction is just a unified set of utility methods :) <itamar> how about anygui? they are promising a html interface <glyph> itamar: anygui is crack <itamar> and a curses interface <itamar> glyph: why do you say that? <glyph> itamar: Have you ever done any work with webwidgets? <itamar> nope <glyph> itamar: take a look at the form widget <glyph> itamar: it's staggeringly little code to write <itamar> one sec <itamar> where can I find an example? <glyph> You might have to refactor it a little bit, but the basic idea is you define what inputs your form takes, then it renders the form for you and calls back to a method with the appropriate signature with each form value as an arguemnt when the user POSTs <itamar> ok, so we can have a generic configuration API, and have a web interface to that, and a tkinter interface to it etc.? <glyph> itamar: twisted.web.guard.AuthForm <glyph> itamar: yes. <glyph> itamar: I don't want to do anygui, because I'd like the tkinter interface to be *different* from the web interface. To begin with I think we should go with web-only and refactor once we see what ocnfiguration patterns emerge, but if you want to go with tkinter-only or gtk-only for the first pass... hey, I don't have the time to write this :) <itamar> mmmm <itamar> how about registry.registerThingie(type, description, parameters, factoryCallable) <itamar> registry.listThingies(type) <itamar> I'm going to eat <itamar> glyph: mail the log to the list -- ______ you are in a maze of twisted little applications, all | |_\ remarkably consistent. | | -- glyph lefkowitz, glyph @ twisted matrix . com |_____| http://www.twistedmatrix.com/ [View Less]

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[Twisted-Python] Perspective Broker for Java works!
by Itamar Shtull-Trauring Nov. 7, 2001

Nov. 7, 2001

Hi everyone, Just a status report - PB for Java is up to the point where it can connect to the simple example service in doc/examples/pbsimple.py and get the response. Which means that implementing a (very) basic implementation with equivalent functionality to XML-RPC takes about 3 days. As always, I'd appreciate any help in making this a complete implementation.

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[Twisted-Python] Re: internet passport.py,1.15,1.16
by Kevin Turner Nov. 6, 2001

Nov. 6, 2001

On Mon, Nov 05, 2001 at 08:24:53AM -0600, Glyph Lefkowitz wrote: > Modified Files: > passport.py > Log Message: > * small API change to internet.passport; Perspectives are now only > attached to the service when they are added to it. Um, okay. But why? Your commit just added an extra line to every place in the codebase which created a Perspective, without making that code any more expressive. If Perspectives in fact only exist to provide a perspective to a specific … [View More]

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[Twisted-Python] Twisted 0.12.0
by Chris Armstrong Nov. 4, 2001

Nov. 4, 2001

I'm not one for PR writing, so this is short. ;) There's a new Twisted release at http://twistedmatrix.com. It's a major feature enhancement and bug-fix release, and it went rather smoothly -- if you'll notice, everyone's personal webservers on zaibach are still running, even without needing a restart :-) -- Chris Armstrong | carmstro(a)twistedmatrix.com | cjast3(a)robert-morris.edu Web Page: http://purl.org/net/ChrisArmstrong

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[Twisted-Python] Call for developers: PB for Java
by Itamar Shtull-Trauring Nov. 4, 2001

Nov. 4, 2001

Hi everyone, I've started working on a PB implementation for Java. Banana support is finished, next up is jelly support, and then finally pb support. If anyone is interested in helping please contact me, on #python or by email. Cheers!

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[Twisted-Python] ingtkernet._conditions
by Kevin Turner Nov. 3, 2001

Nov. 3, 2001

In Twisted/twisted/internet/ingtkernet.py revision 1.3: > _conditions = { > gtk.GDK.INPUT_READ: 'Read', > gtk.GDK.INPUT_WRITE: 'Write', > > # This is here because SOMETIMES, GTK tells us about this > # condition (wtf is 3!?! GDK.INPUT_EXCEPTION is 4!) even though we These are *bit flags*, so 3 is INPUT_READ & INPUT_WRITE. I'm not sure what the correct course of action is to take here; I tried calling both doRead and doWrite, but that only resulted in … [View More]

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[Twisted-Python] The never-ending quest for 1.0
by Chris Armstrong Nov. 2, 2001

Nov. 2, 2001

Well, glyph has guilted me into trying out this "release manager" thing tonight, since I, like, don't actually code anything. I'm gonna _try_ to get 0.12.0 out tomorrow (well, later today), but my girlfriend might rip me away from my computer (friday night, and all). If I don't have it released by the weekend, (and it's not because of a bunch of bugs), then I give you permission to hunt me down and lynch me for my lack of responsibility. Speaking of responsibility, I think release manager … [View More]

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[Twisted-Python] Re: [Twisted-commits] CVS: WebSite/twistedmatrix.com index.epy,1.22,1.23
by Chris Armstrong Nov. 2, 2001

Nov. 2, 2001

On Thu, Nov 01, 2001 at 05:06:33AM -0600, Itamar Shtull-Trauring wrote: > Update of /cvs/WebSite/twistedmatrix.com > In directory zaibach:/tmp/cvs-serv10487 > > Modified Files: > index.epy > Log Message: > added some info on what Twisted actually is [snip diff..] Isn't that what whatis.html is for?

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[Twisted-Python] Enterprise, do you copy?
by Kevin Turner Nov. 1, 2001

Nov. 1, 2001

...hello? Hello? Is anyone receiving this transmission? I heard from Dad again today, and he was grumbling about developing in this Oracle JDeveloper environment... Five different languages to develop "java server[servlet?] pages", he says. Java, because that's where Oracle seems to be building its tools these days; then there's Oracle's query language; then HTML for the web interfaces; and JavaScript, because there's something that needs to be done client-side, and, uh, what was the fifth … [View More]one again? Then there's the hundreds of functions the wizards create for simple tasks, spread across untold numbers of files... Ye gods, man. Can anyone save this tragedy? I can't give you a complete list of requirements, but the general gist is this: The laboratory has researchers and machines, the researchers do experiments and the machines spit out data. Quite a bit of data. This data comes out in raw form, needs to be stored, processed, the results stored. It'd be nice to keep track of which data actually belongs to what run of whose experiment -- it seems like they lose track of that every now and then. Anyway, data (lots, but still in the fractional-terabyte range) stored in Oracle, and, naturally, cross-referenced with other data, and, well, there's a lot of that going around. The researchers, who spend most of their time knocking the brains out of mice instead of clicking on them, need relatively friendly interfaces to the data from their experiments, and for shoveling it around between these various phases of analysis. They hope to add some internet soon, so they can pool data from their distributed colleagues. So, I gotta ask. What's the status of twisted.enterprise these days? With Oracle? Webwidgets would help with the web bit, but they'd still need to write javascript to keep the forms from being completely dumb? Or can you convince them that there's another interface that's portable and *drop-dead-easy* to maintain on the client machines, which he can use as an alternative to web? Is there an IDE which can make up for all the shiny things which the Oracle tools have? If I didn't make the situation sound scary enough before, here's the truly horrifying detail: there's another faction among the computer-guys in the lab which wants to use _exclusively_ Perl. I don't think it's too late. They're still making up their minds. But if there's another option, they've got to know soon, before they're wholly consumed by the dark side. And whatever it is, it's got to do a damn _impressive_ job of selling itself, to overcome both that warm fuzzy feeling imparted by the "Larry Ellison" brand, and the deap zealotry of the Perl encampment. May peace be with you, - Kevin -- The moon is waxing gibbous, 99.9% illuminated, 14.5 days old. [View Less]

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