Mailman 3 August 2002 - Twisted

[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz Aug. 5, 2021

Aug. 5, 2021

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. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |… [View More]

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[Twisted-Python] Twisted superservers and setuid/setgid subservers
by Andrew Bennetts Aug. 31, 2002

Aug. 31, 2002

Here's some ideas I've been thinking about with aid of my housemate (who is CC'd). A feature of some servers is the ability to run chroot'd, so say you want to be a WebDAV server for a site, when a user logs in, it forks, chroots to the users home directory, and sets its uid/gid to that of the user, thereby restricting the potential for security holes to damage the system. (The chroot is an optional paranoid extra if you are dropping uid/gid) Consider twisted.web.distrib (I might have bits … [View More]of this slightly wrong; please correct me if so). It currently does something like this, although manually: each user has to start their own twistd, which only runs twisted.web, and talks to the superserver with PB via a pipe. This is good, but not as general as it could be. It's limited to twisted.web, and users have to manually ensure that twistd is running. I think it'd be nice to generalise this to *any* service that can run within the context of different users, e.g. for FTP, WebDAV, whatever. So there'd be some automated way to tell a Twisted application "Ok, now serve this as a particular user by passing it to a user-owned twistd". What I'm envisaging is something like this: * The superserver receives a WidgetService request from user Bob * The superserver connects to the user's WidgetService twistd, starting it if necessary (more on this in a moment) * The user's WidgetService then does all the hard work :) If the user doesn't have a currently running twistd, then you could do, say: * The superserver creates a pipe * The superserver (which is running as root (or something effectively root)) forks a child * The child does a reactor.crash() to stop it interfering with the parent's normal handling of events * The child closes all file descriptors in the reactor, except for the pipe. It should probably start logging to a different log file as well. Also, things like DB-backed twisted.cred authenticators probably should be shutdown... hmm, this part is messy :( * The child then starts a fresh Application, which runs the user's WidgetService and starts processing for the superserver Now that I think about it, it is probably cleaner to simply spawn a fresh process rather than futzing around with fork, so just: * The superserver spawns a user twistd as a particular uid/gid, and talks to it over a PB pipe. Anyway... The nice thing about this model is that there is only 1 twistd running per user (and you could get the user twistds to automatically shutdown if inactive for, say, 10 minutes to free resources), which means your process load is still mostly independent of the number of connections. It'd be *really* cool if a superserver listening on multiple protocols, e.g. "WidgetService" and HTTP, could have only a *single* twistd per user, regardless of number of protocols the superserver is dealing with. It'd be really nice to be able to chroot as well, but I suspect python doesn't work cleanly with chroot, due to file descriptors being left open to modules... So yeah, this is a long-winded way of saying "twisted.web.distrib is cool, but should be general and more automatic", because I think this would probably be useful. In vaguely related news, I've nearly got a simple Twisted inetd replacement written... expect a checkin sometime this weekend. -Andrew. [View Less]

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[Twisted-Python] Twisted 0.99.1rc4
by Christopher Armstrong Aug. 31, 2002

Aug. 31, 2002

Another release candidate out; this one will probably turn into 0.99.1 this weekend. Grab it at http://twistedmatrix.com/products/download Moshez finally got me around to doing signed md5sums: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 6c0934460fe24ffa75247cb6a324f2ee Twisted-0.99.1rc4.tar.bz2 e063effe8789bc3d5741c75a229d7a4a Twisted-0.99.1rc4.tar.gz 5d9b44a2509b0eee3e9299527f4995f6 Twisted-0.99.1rc4.zip 0f6f036318844098e5bff153094737e8 TwistedDocs-0.99.1rc4.tar.bz2 … [View More]

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[Twisted-Python] Dud bug tracker link on tm.com
by Andrew Bennetts Aug. 30, 2002

Aug. 30, 2002

>From anywhere other than the front page (e.g. the uber-nifty success stories page, http://twistedmatrix.com/services/success), the "Bug Tracker" link points to: http://twistedmatrix.com/http://sourceforge.net/tracker/?func=browse&group_… -Andrew.

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[Twisted-Python] Twisted 0.99.1rc3
by Chris Armstrong Aug. 29, 2002

Aug. 29, 2002

Hey all, I made 99.1rc3 available on the website (thanks to moshez and exarkun for doing deb/win32 packages). Please download and test. As always, this will become 0.99.1 once it's deemed to be Bug Free[TM]. -- Chris Armstrong << radix(a)twistedmatrix.com >> http://twistedmatrix.com/users/radix.twistd/

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[Twisted-Python] rfc: pb filetransfers
by Paul Boehm Aug. 29, 2002

Aug. 29, 2002

My approach to doing pb filetransfers is attached, Suggestions welcome! this code should illustrate the basic idea: # A Session is a chain of Jobs that are carried out in order, # one after another. # The server builds a custom Session from Mixins, to provide # only the jobs he wants to accept. ServerSession is the base # class (pb.Viewable). # FileSSM is the ServerSessionMixin for Filetransfers. class FileSession(session.ServerSession, session.FileSSM): pass # Then that class is … [View More]

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[Twisted-Python] http://www.twistedmatrix.com/documents/howto/time
by Boyd Roberts Aug. 29, 2002

Aug. 29, 2002

Have you thought of getting the callLater() method to return an object with a cancel() method? Eg: from twisted.internet import reactor def f(): print "I'll never run." call = reactor.callLater(5, f) call.cancel() Other methods could be added and both would reduce reactor's namespace. Modification of the arguments or re-scheduling the time could be such methods to add.

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[Twisted-Python] Submitted for your approval
by Jp Calderone Aug. 28, 2002

Aug. 28, 2002

Because I use rebuild a _lot_ in one of my applications, I finally broke down and write this addition to scripts/twistd.py. I'm not sure if its appropriate for inclusion in the repository (and if it is, it certainly needs some cleanup first). diff -a -c -t -r1.1 twistd.py *** twisted/scripts/twistd.py 20 Aug 2002 02:31:59 -0000 1.1 --- twisted/scripts/twistd.py 28 Aug 2002 23:32:23 -0000 *************** *** 309,311 **** --- 309,342 ---- if usepid: os.unlink(config.… [View More]

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[Twisted-Python] Generalised data/metadata storage/retrieval
by Jp Calderone Aug. 28, 2002

Aug. 28, 2002

Interface description attached. Written in response to glyph's comments that Twisted.news was waaay too NNTPy. Suggestions and other comments appreciated. -- Seduced, shaggy Samson snored. She scissored short. Sorely shorn, Soon shackled slave, Samson sighed, Silently scheming, Sightlessly seeking Some savage, spectacular suicide. -- Stanislaw Lem, "Cyberiad" -- 4:00pm up 99 days, 16:51, 5 users, load average: 0.11, 0.13, 0.09

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[Twisted-Python] M-x customize-group whitespace
by Kevin Turner Aug. 28, 2002

Aug. 28, 2002

Silly point that only a bunch of emacs-thumping Python wonks would make. Should/may I put a bit in the Whitespace section of the CodingStandard about emacs' whitespace-cleanup mode? Point being that it doesn't let you leave trailing whitespace on the end of (possibly empty) lines or trailing lines at the end of file. Being consistent about this would cut down on spurious file-modified flags from CVS. See C-h f whitespace-describe if unfamiliar. The only evil thing about it is that if you … [View More]

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[Twisted-Python] Documentation: man pages online?
by Andrew Bennetts Aug. 28, 2002

Aug. 28, 2002

Just a quick thought... we could put the twistd(1), etc man pages on tm.com as part of documentation online. It probably belongs under "Adminstrator" docs. -Andrew.

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[Twisted-Python] fork
by Andrew Bennetts Aug. 28, 2002

Aug. 28, 2002

An interesting little use-case for us, from a snippet of a conversation on #slug: 13:45 < DanielS-work> w00t! 13:45 * DanielS-work is 90% of the way to releasing 0.0.1 of MoulDAVia :) 13:48 < nevyn> yay 13:50 < DanielS-work> nevyn: it's how i taught myself python heh. so far every method i have (and I have most of them, and the hardest ones are all done) is rfc-compliant 13:51 < nevyn> so do you like python? 13:51 < … [View More]

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[Twisted-Python] twisted-bugs mailing list
by Christopher Armstrong Aug. 27, 2002

Aug. 27, 2002

I configured the SF bug-tracker to send mails to twisted-bugs(a)twistedmatrix.com. If you want to sign up, go to http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-bugs Squash 'dem bugs! -- Chris Armstrong << radix(a)twistedmatrix.com >> http://twistedmatrix.com/users/radix.twistd/

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[Twisted-Python] fwd: Accepted twisted 0.99.0-1 (i386 source all)
by Moshe Zadka Aug. 27, 2002

Aug. 27, 2002

To: debian-devel-changes(a)lists.debian.org From: Moshe Zadka <moshez(a)debian.org> Subject: Accepted twisted 0.99.0-1 (i386 source all) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Format: 1.7 Date: Sun, 18 Aug 2002 23:01:14 -0500 Source: twisted Binary: python2.2-twisted-bin python2.1-twisted python2.1-twisted-bin python-twisted twisted-quotes twisted-doc python2.2-twisted twisted Architecture: source i386 all Version: 0.99.0-1 Distribution: unstable Urgency: low Maintainer: Moshe … [View More]Zadka <moshez(a)debian.org> Changed-By: Moshe Zadka <moshez(a)debian.org> Description: python-twisted - Event-based framework for internet applications. (dummy package) python2.1-twisted - Event-based framework for internet applications. (Python 2.1) python2.1-twisted-bin - Event-based framework for internet applications python2.2-twisted - Event-based framework for internet applications. python2.2-twisted-bin - Event-based framework for internet applications twisted - Event-based framework for internet applications. (transitional) twisted-doc - The official documentation of Twisted. twisted-quotes - Quotes from the Twisted development team Changes: twisted (0.99.0-1) unstable; urgency=low . * New upstream version. * Packaging changes: * "Twisted" is now a package, to facilitate upgrades from woody (there are verioned depends:) * New package: twisted-quotes -- quotes collected by the Twisted release team Files: 65a4dc33c47065faadcf28c713ab0c1a 732 net extra twisted_0.99.0-1.dsc a5e976a2953dbf0efcd02bd738c58f59 1415173 net extra twisted_0.99.0.orig.tar.gz eb75fd1d67da3d04c7d5e39c4ac7ba08 416 net extra twisted_0.99.0-1.diff.gz 3437fc40327dfa1ea733c93ac06df3e9 641672 net extra twisted-doc_0.99.0-1_all.deb 11af21709304e558ddfff117f17fbcf9 49272 net extra twisted-quotes_0.99.0-1_all.deb 9b1c4010b807a0931075fef8f32d3d2f 4210 net extra twisted_0.99.0-1_all.deb 7797acc22d06034250722b15cf659ceb 4330 net extra python-twisted_0.99.0-1_all.deb 3a9995459a9d871b5cdaf2b396bed84c 466824 net extra python2.1-twisted_0.99.0-1_all.deb 3455c5d34d8ba74d139881c5e6781156 466538 net extra python2.2-twisted_0.99.0-1_all.deb eefb571dadbcf35889917d945b88d38a 23382 net extra python2.1-twisted-bin_0.99.0-1_i386.deb efe110781cce1c392f2263a68eb83e68 24134 net extra python2.2-twisted-bin_0.99.0-1_i386.deb -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE9YOUCx/ymNkbQG9YRAlMbAKCvGTOEOS6ldP16chwnH4ec9GC/2wCgiwli ljzmGQmEvM0CMiSpLAdnLTs= =APdj -----END PGP SIGNATURE----- Accepted: python-twisted_0.99.0-1_all.deb to pool/main/t/twisted/python-twisted_0.99.0-1_all.deb python2.1-twisted-bin_0.99.0-1_i386.deb to pool/main/t/twisted/python2.1-twisted-bin_0.99.0-1_i386.deb python2.1-twisted_0.99.0-1_all.deb to pool/main/t/twisted/python2.1-twisted_0.99.0-1_all.deb python2.2-twisted-bin_0.99.0-1_i386.deb to pool/main/t/twisted/python2.2-twisted-bin_0.99.0-1_i386.deb python2.2-twisted_0.99.0-1_all.deb to pool/main/t/twisted/python2.2-twisted_0.99.0-1_all.deb twisted-doc_0.99.0-1_all.deb to pool/main/t/twisted/twisted-doc_0.99.0-1_all.deb twisted-quotes_0.99.0-1_all.deb to pool/main/t/twisted/twisted-quotes_0.99.0-1_all.deb twisted_0.99.0-1.diff.gz to pool/main/t/twisted/twisted_0.99.0-1.diff.gz twisted_0.99.0-1.dsc to pool/main/t/twisted/twisted_0.99.0-1.dsc twisted_0.99.0-1_all.deb to pool/main/t/twisted/twisted_0.99.0-1_all.deb twisted_0.99.0.orig.tar.gz to pool/main/t/twisted/twisted_0.99.0.orig.tar.gz -- To UNSUBSCRIBE, email to debian-devel-changes-request(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org [View Less]

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[Twisted-Python] Please help with Deferreds
by Tommi Virtanen Aug. 27, 2002

Aug. 27, 2002

Can anyone explain the behaviour of the following? #!/usr/bin/python import sys from twisted.internet import defer, reactor d=defer.Deferred() d.callback(0) d2=defer.Deferred() d.addCallback(lambda x,d2=d2: d2) # switch the comment sign on the next two and it'll # print not 1 but a Deferred. Why? #reactor.callLater(0, lambda d2=d2: d2.callback(1)) d2.callback(1) d.addCallback(lambda x:sys.stdout.write(repr(x)+'\n')) d.addBoth(lambda x:reactor.stop()) reactor.run() -- 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] Change LogFile to support disabling log rotation if rotateLength is None.
by Chris Armstrong Aug. 27, 2002

Aug. 27, 2002

On Mon, Aug 26, 2002 at 02:53:30AM -0500, spiv CVS wrote: > Modified files: > Twisted/twisted/python/logfile.py 1.1 1.2 > > Log message: > Change LogFile to support disabling log rotation if rotateLength is None. Why not 0 instead of None?

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Re: [Twisted-Python] gtkLineClient.py
by Lee Harr Aug. 27, 2002

Aug. 27, 2002

> > # gtkLineClient.py > > # Free. Please share > >Hi Lee! What exactly is this client for? At first I figured it was just >something to test one's line-based server protocols with, but the >"USERNAME_foo" line implies some sort of protocol (I think?). > For? Heh heh. It is really just my attempt to make a gtk application talk over the internet. I had looked at the only other gtk app that came with the 0.19 distribution, but it used twisted.spread which frankly I … [View More]

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[Twisted-Python] client API issue for Application
by Christopher Armstrong Aug. 26, 2002

Aug. 26, 2002

I've been talking with nobomb on #twisted about his IRC bot, which he wants to be able to connect to a list of servers for fail-over (i.e., when one server connection fails, try to connect to the nest). We worked it out so that he'd call app.connectTCP again in his clientConnectionFailed method of his ClientFactory, but I realized that the tcpConnectors list in Application *never* gets cleaned out. Should we have an explicit method to do this, or some kind of automatic cleaning, or something...?… [View More]

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[Twisted-Python] Bug tracker
by Chris Armstrong Aug. 26, 2002

Aug. 26, 2002

I've temporarily set up the SourceForge bug tracker for Twisted, which is browsable at https://sourceforge.net/tracker/?atid=456015&group_id=49387&func=browse. (I think you need to be logged in to submit bugs). As soon as the Twisted Issues tracker is done, we can switch to it, but we were in desperate need for a real bug tracker in the meantime.

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[Twisted-Python] gtkLineClient.py
by Lee Harr Aug. 26, 2002

Aug. 26, 2002

# gtkLineClient.py # Free. Please share from twisted.protocols.basic import LineReceiver from twisted.internet import gtkreactor gtkreactor.install() import gtk from twisted.internet import reactor class LoginInfo: def __init__(self): self.username = 'guest' self.host = 'localhost' self.port = 8888 self.quit = 0 class LoginWindow(gtk.GtkWindow): def __init__(self, info): self.info = info w = gtk.GtkWindow(gtk.WINDOW_TOPLEVEL) … [View More] w.connect('destroy', self.quit) vb = gtk.GtkVBox() w.add(vb) b = gtk.GtkButton('QUIT') b.signal_connect('clicked', self.quit) vb.add(b) self.usernameEntry = gtk.GtkEntry() self.usernameEntry.set_text(self.info.username) self.usernameEntry.signal_connect('activate', self.login) vb.add(self.usernameEntry) b = gtk.GtkButton('LOGIN') b.signal_connect('clicked', self.login) vb.add(b) w.show_all() self.w = w def login(self, b): print 'LOGGING IN' self.info.username = self.usernameEntry.get_text() self.w.hide() gtk.mainquit() def quit(self, b): print 'QUITTING' self.info.quit = 1 gtk.mainquit() class Client(LineReceiver): def __init__(self, info): self.info = info w = gtk.GtkWindow(gtk.WINDOW_TOPLEVEL) w.connect('destroy', self.quit) vb = gtk.GtkVBox() w.add(vb) q = gtk.GtkButton('QUIT') q.connect('clicked', self.quit) vb.add(q) c = gtk.GtkButton('CLOSE') c.connect('clicked', self.close) vb.add(c) s = gtk.GtkButton('SEND') s.connect('clicked', self.send) vb.add(s) self.w = w def connectionMade(self): self.w.show_all() print 'CONNECTED' self.sendLine('USERNAME_%s' % self.info.username) def send(self, b): self.sendLine('message') def lineReceived(self, line): print 'Server said:', line def closeConnection(self): self.transport.loseConnection() def close(self, b): print "CLOSING" self.sendLine('CLOSE') self.w.hide() self.closeConnection() reactor.stop() def quit(self, b): self.info.quit = 1 self.close(b) def connectionLost(self): print 'Connection lost' self.w.hide() reactor.stop() def connectionFailed(self): print 'Connection failed' reactor.stop() def main(): info = LoginInfo() while 1: l = LoginWindow(info) gtk.mainloop() if l.info.quit: break e = Client(info) reactor.clientTCP(info.host, info.port, e) reactor.run() if info.quit: break if __name__ == '__main__': main() _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com [View Less]

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[Twisted-Python] Proposed Website Comp
by Mark A. Richman Aug. 26, 2002

Aug. 26, 2002

I whipped up a new look for the site this morning: http://www.markrichman.com/twisted/ I did this in about 30 minutes using Macromedia Fireworks MX. Please let me know what you think. Best Regards, Mark A. Richman Empire Software, Inc. http://www.empsoft.com/

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[Twisted-Python] Ldaptor BoF at Linux-Kongress
by Tommi Virtanen Aug. 25, 2002

Aug. 25, 2002

Hi. I'm thinking of organizing a BoF at Linux-Kongress, about Ldaptor and Scalemail etc. My email/LDAP-related Twisted thingies, that is. Please give feedback on the email I am about to send. What would you like to hear? What would motivate you to joining the brainw^H^H^H^H^H^HBoF? Latest version of the mail will be at http://www.twistedmatrix.com/users/tv/bof.txt Current edition follows. --8<-- From: Tommi Virtanen <tv(a)debian.org> To: jochen.topf(a)guug.de Cc: Bcc: … [View More]

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[Twisted-Python] web.guard application.authorizer obsolete message
by Tommi Virtanen Aug. 25, 2002

Aug. 25, 2002

Hi. I'm not sure whether it is safe to commit this, so sending this patch here. Please apply if suitable. Index: twisted/web/guard.py =================================================================== RCS file: /cvs/Twisted/twisted/web/guard.py,v retrieving revision 1.16 diff -u -u -r1.16 guard.py --- twisted/web/guard.py 21 Aug 2002 13:21:30 -0000 1.16 +++ twisted/web/guard.py 25 Aug 2002 11:35:13 -0000 @@ -128,7 +128,7 @@ # must be done before page is displayed … [View More]

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RE: [Twisted-Python] Proposed Website Comp
by Christopher Armstrong Aug. 25, 2002

Aug. 25, 2002

On Sat, 2002-08-24 at 22:12, Mark A. Richman wrote: > This is why I called it a "comp" - I'm not going to waste my time with > "real" HTML, CSS, etc. if you aren't going to like it...which you have > made abundantly clear. I think you got the wrong idea -- glyph did say that it was visually pleasing (or something similar). It was only technical things that he had criticisms for, and I agree with him full-heartedly. I think it's sexy as well, it just needs to be hacked on to be not so … [View More]

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[Twisted-Python] Python 2.1
by Moshe Zadka Aug. 24, 2002

Aug. 24, 2002

2.1 has no nested scopes. Please don't do that: def listGroupRequest(self, group): sql = """ SELECT postings.article_index FROM postings,groups WHERE postings.group_id = groups.group_id AND groups.name = '%s' """ % (adbapi.safe(group),) return self.runQuery(sql).addCallback( lambda results: (group, [res[0] for res in results]) )

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