Mailman 3 October 2001 - Twisted

[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 05 Aug '21

05 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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[Twisted-Python] Sped-up banana
by Elliot Lee 08 Nov '01

08 Nov '01

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

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[Twisted-Python] Re: [Twisted-commits] CVS: Twisted/twisted/protocols basic.py,1.13,1.14
by Itamar Shtull-Trauring 29 Oct '01

29 Oct '01

Itamar Shtull-Trauring wrote: > Modified Files: > basic.py > Log Message: > I was overwriting self.mode by mistake, so I made it private > May I add something to the coding standard regarding this? Index: doc/CodingStandard.html =================================================================== RCS file: /cvs/Twisted/doc/CodingStandard.html,v retrieving revision 1.5 diff -c -r1.5 CodingStandard.html *** doc/CodingStandard.html 2001/10/26 16:33:19 1.5 --- doc/CodingStandard.html 2001/10/29 15:13:53 *************** *** 219,224 **** --- 219,239 ---- function, class, method, or module, make sure that it won't instantly break other code. </p> + <p> + If your class has attributes that are intended to be private and + implementation specific (e.g. the current state of a state-machine), + prefix your attribute with __. This will make sure that they don't + interfere with subclasses' attributes by mistake. For example: + <pre> + class Foo: + + __state = 1 + + def doSomething(self): + # ... + self.__state = 2 + </pre> + </p> <hr> <address><a href="mailto:glyph@helix.twistedmatrix.com">Glyph Lefkowitz</a></address>

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[Twisted-Python] Tendril
by Kevin Turner 28 Oct '01

28 Oct '01

Tendril is a Words client. Or maybe it's more of a meta-client, since it manages a whole fistful of Perspectives (aka words Participants) at once. Or maybe it's words' ircservice turned inside-out, because yeah, there's some IRC in it. Instead of providing an IRC server which people log on to with their IRC clients to talk to the Words service, Tendril is an IRC Client which lives with a Words service. Tendril logs on to a remote IRC server, and once there, creates a words Participant for everyone it sees. This gives it an advantage over joining Bridgette to the Words irc service, as there everyone shows up as a single Participant "ry". Since Tendril creates a Participant for every IRC user it represents, each one appears in the words group just as they would if they had all logged directly into the Words service. The difference is <ry> Acapnotic joined on OPN <ry> <Acapnotic@opn> Hi! versus: Acapnotic@opn joined! <Acapnotic@opn> Hi! ... And yes, the link goes in the other direction too; the conversation that goes on in the Words group is reported back to the IRC channel. But because I didn't think IRC operators would appreciate having 20 clients logged in from the same sever to represent 20 words Participants, when viewed from the IRC side everyone appears to be speaking through one "bot"; from this end it looks just like Bridgette. By putting multiple Tendrils connected to different IRC networks in the same Words group, you can duplicate Bridgette's effect of joining IRC networks together. Since tendril operates transparently on the Words side, you needn't worry about an ugly chained relay effect when you do this, even though the Tendrils to the different IRC networks are separate entities. <ry1> <ry2@opn> <foo@efnet> Don't worry, Tendril won't look like this. In addition to linking IRC channels to Words groups, Tendril also converts between private /msgs and Words directMessages, so can tell your Words client to "Start conversation with... Acapnotic@opn", and Acapnotic will receive your messages via msg over the IRC network, and you will see Acapnotic's replies in your conversation window. One final bonus for the IRC freaks: Tendril has a kludge (feature!) to broker DCC handshakes between IRC networks. This doesn't mean that Tendril receives a file over DCC and sends it out again, it only passes the *handshake*, and because Direct Client Connections operate entirely outside the IRC network, this actually works. The big motivation behind Tendril is now if I want to write an IRC bot, I don't need to write it for IRC. I write it as a words client and put it on a words service instead. If there's already a tendril from that channel to a Words service, then I can have my words bot sign on to that service, otherwise I could run a tendril+words service locally with just my bot signed on, and that'd work too. (Actually, the aforementioned DCC handshake brokering could probably be broken out into a separate Words bot, assuming IRC clients have implemented CTCP correctly. Having a Words bot for something that's exclusively an IRC feature is a bit peculiar though.) "I-think-that's-a-long-enough-introduction"ly yours, - Kevin -- Kevin Turner <acapnotic(a)twistedmatrix.com> | OpenPGP encryption welcome here The moon is waxing gibbous, 89.0% illuminated, 11.6 days old.

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[Twisted-Python] Forensic System Data Logger
by Itamar Shtull-Trauring 27 Oct '01

27 Oct '01

YATTSBIT: <http://www.zope.org/Members/mcdonc/Products/ForensicLogger>

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[Twisted-Python] Re: [Twisted-commits] CVS: Twisted/twisted/internet task.py,1.10,1.11
by Itamar Shtull-Trauring 25 Oct '01

25 Oct '01

Itamar Shtull-Trauring wrote: > A task queue per thread was apprently stupid, too much time was spent waiting > on locks. The new implementation needs refactoring in a big way > (copy/paste coding), but is significantly faster. Apparently this is inaccurate, since the scheduler now spends too much time running tasks. Suffice to say that this needs tuning.

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[Twisted-Python] Check this out
by Itamar Shtull-Trauring 25 Oct '01

25 Oct '01

http://cvs.zope.org/Packages/Spread/ http://www.spread.org/ From the overview page: The problem in building distributed systems comes from the need to communicate and synchronize the different components of the system using networks that are prone to faults. In every distributed system (e.g. replicated databases or application server clusters) there are inherent uncertainties about the current state of remote components. Due to the complexity of such systems, the construction of a reliable and efficient distributed system is very difficult. Spread is a toolkit that provides a high performance messaging service that is resilient to faults across external or internal networks. Spread functions as a unified message bus for distributed applications, and provides highly tuned application-level multicast and group communication support. Spread services range from reliable message passing to fully ordered messages with delivery guarantees, even in case of computer failures and network partitions.

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[Twisted-Python] DCC PERSPECTIVE
by Kevin Turner 25 Oct '01

25 Oct '01

So here's how DCC SEND works in IRC-land: When I offer a file for DCC, I bind a socket to port 0, and I send you a CTCP message with my address, the port number, an argument providing the filename, and if I'm feeling nice, a filesize parameter as well. I wait for someone to attach to this port (hopefully it's you), stop listening for anything else, and start pumping the file through the socket. DCC CHAT works the same way, except I use the socket for a line-oriented chat instead of file transport. So here's me, doin' this thing for the Twisted protocol while glyph is telling me about distributed hacks involving shotguns with retro-rockets and superheated rods for inertial dampeners, and it hits me: Another way to advertise PB services would be with a DCC PERSPECTIVE query. You could pass a OTP or something instead of a filename, and then the PB-enabled IRC client would do getObjectAt... Now is that useless, or what! "but-I'm-*not*-coding-IRC"-ly yours, - Acap^H^H^H^HKevin -- Kevin Turner <acapnotic(a)twistedmatrix.com> | OpenPGP encryption welcome here

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[Twisted-Python] Passport should be more async
by Tommi Virtanen 23 Oct '01

23 Oct '01

[Related to twisted.internet.passport, twisted.reality.plumbing, twisted.web.guard and twisted.words.ircservice] Passport, as it is now, cannot be used with real world authentication services such as LDAP and Radius. The primary reason seems to be that Identity.verifyPlainPassword() is assumed to be sync -- the usual LDAP config is such that hashed passwords cannot be retrieved from the server, but one can attempt to bind to a user entry with such a password. And that bind attempt is naturally async. The patch here mimics the Deferred usage in Authorizer.getIdentityRequest(), implementing a similar system with Identity.verifyPlainPassword(). I have also attempted to fix all callers, but I *really* need help with twisted.web.guard. Please give feedback. -- tv(a){{hq.yok.utu,havoc,gaeshido}.fi,{debian,wanderer}.org,stonesoft.com} double a,b=4,c;main(){for(;++a<2e6;c-=(b=-b)/a++);printf("%f\n",c);}

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[Twisted-Python] Re: [Twisted-commits] CVS: Twisted/twisted/test test_usage.py,NONE,1.1
by Itamar Shtull-Trauring 20 Oct '01

20 Oct '01

Kevin Turner wrote: > test_usage: "Sure sub-space ponies, I'm making gravy without the lumps!" Today's lesson: never buy a Frank Zappa album before hearing it. It might be amazing good music (e.g. Apostrophe) or, if you buy Lumpy Gravy, you get an album with barely no music but full of dialogues such as: SPIDER: I think I can explain about . . . about how the pigs' music works MONICA: Well, this should be interesting SPIDER: Remember that they make music with a very dense light, and remember about the smoke standing still and how they . . . they really get uptight when you try to move the smoke, right? MONICA: Right JOHN: Yeah? SPIDER: I think the music in that dense light is probably what makes the smoke stand still. Any sort of motion has its effect on . . . on the ponies' manes. You know, the thing on their neck JOHN: Hmm . . . SPIDER: As soon as the pony's mane starts to get good in the back any sort of mo . . . motion, especially of smoke or gas, begins to make the end split. JOHN: That's the basis of all their nationalism. Like if they can't salute the smoke every morning when they get up . . . SPIDER: Yeah, it's a vicious circle. You got it.

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