Mailman 3 August 2002 - Twisted

[Twisted-Python] [No Subject]
by Daniel Burr Aug. 24, 2002

Aug. 24, 2002

I've noticed that the current 0.99 release candidate for Windows has no twistd or twistd.py included. A brief check of CVS shows that twistd is still there, although it is going through some alterations. Anyway, is there any chance that the next release will contain this? Kinda hard to follow the docs and tutorials when twistd isn't there for use. Otherwise, I really like the revised webmvc docs, and the refactored client code. Great work!

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[Twisted-Python] 0.99.1 soon
by Chris Armstrong Aug. 23, 2002

Aug. 23, 2002

I'll be releasing 0.99.1 this weekend, so get in your patches people. Perhaps we can do epydoc for this release.

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[Twisted-Python] Newbie Q on 0.99 release
by Prabhakar Chaganti Aug. 23, 2002

Aug. 23, 2002

All: I have just started playing with twisted and have a few q: 1. What is the difference between web widgets and the DOM templates? 2. The 0.99 release notes indicates that ssh protocol is supported. Where can I find it? 3. The documentation says that the twisted.web can serve up rpy, html, cgi and php. Is there a PHP interpreter in twisted. thanks prabhakar

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[Twisted-Python] nested_scopes
by Chris Armstrong Aug. 23, 2002

Aug. 23, 2002

There has been some concern about the use of __future__ imports in Twisted. After a lengthy discussion with moshez, marvin--, and phed, we came to the conclusion that it'd be best to put an explicit list of allowable __future__s into the coding standard, nested_scopes being the only one for now (since that's what we use). yay/nay, etc.

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[Twisted-Python] epydoc and Twisted
by Bruce Mitchener Aug. 23, 2002

Aug. 23, 2002

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[Twisted-Python] Help us release Twisted 1.0
by Itamar Shtull-Trauring Aug. 23, 2002

Aug. 23, 2002

Hi all, We're trying to get 1.0 out the door. How can you help? 1. Write docs, tests, examples. Help get rid of remaining deprecation warnings in tests. 2. Have you submitted a patch for twisted.internet that hasn't made it in? Email it to me directly. And pester Glyph and Allen about finishing up the bug tracking system. 3. Help with the public relations - have you used Twisted in your company? If so we'd love to get quotes from you about what you did and how great it is. You know who … [View More]

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[Twisted-Python] [Fwd: Adelux quote]
by Itamar Shtull-Trauring Aug. 22, 2002

Aug. 22, 2002

Date: Thu, 22 Aug 2002 13:37:00 +0200 Reply-To: lstep (a) adequat.net Organization: Adelux ========================================== Adelux develops custom internet applications such as portals, network security tools, communication-related programs, and software that leverages other systems. We discovered Twisted 10 months ago, and now it is a key element of our development strategy. We have successfully used Twisted on several projects, of very different problem domains. We developped a … [View More]

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[Twisted-Python] Bug adding SSL web server through coil
by Alex Levy Aug. 22, 2002

Aug. 22, 2002

Hi, all -- I've hit a bug while playing around with coil. I made an out-of-the-box web.tap ('mktap web --path static') and ran coil ('coil web.tap'), went to http://localhost:9080/config/ports/ssl and tried to add an 'HTML Web Server' on port 8888. I got the following error: exceptions.TypeError: listenSSL() takes at least 4 arguments (3 given) The traceback is attached. -- Alex Levy Tel: 617.835.0778 WWW: http://mesozoic.geecs.org "Power corrupts. Absolute power is kind of neat." - … [View More]

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[Twisted-Python] t.e.rows and serial
by Benjamin Bruheim Aug. 20, 2002

Aug. 20, 2002

Hello, I've started to examine t.e.rows to see if it fits me. But at the moments it's just an ugly collection of tests. But still I think my problems are actual: Its currently based on the rows-examples that come with twisted. There is a single problem I have. If I try to use the type serial, so that the id for the stuff I put into the db is autoincremented, I get the DBError, "Type serial no known". All examples I've encountered elsewhere increments the id manually, but I do not gain … [View More]

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[Twisted-Python] fdport
by Moshe Zadka Aug. 20, 2002

Aug. 20, 2002

import socket from twisted.internet import tcp, abstract from twisted.python import log class FDPort(tcp.Port): port = "dummy" def __init__(self, fd, factory, backlog=None, reactor=None): """Initialize with a numeric port to listen on. """ abstract.FileDescriptor.__init__(self, reactor=reactor) self.fd = fd self.factory = factory if backlog: self.backlog = backlog def __getstate__(self): """(internal) get my state for … [View More]

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[Twisted-Python] Event I/O for Java
by Zooko Aug. 19, 2002

Aug. 19, 2002

Itamar suggested that I mail this list announcing EIO -- an Event-based Input/Output package for Java. http://zooko.com/eio The design of the EIO package should look familiar to Twisted hackers -- it uses the handy concepts of callbacks, non-blocking IO, and a task scheduler. If someone wanted to write a reactor for the Twisted Java code, EIO might be a good place to start. One limitation is that it currently requires Java >= 1.4. Regards, Zooko

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[Twisted-Python] ANN: Twisted 0.99.0
by Christopher Armstrong Aug. 19, 2002

Aug. 19, 2002

Twisted is an event-based framework for internet applications, written in Python and licensed under the LGPL. For more information, visit: http://www.twistedmatrix.com Join the mailing list at: http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python Our IRC channel is #twisted on irc.openprojects.net. What's New in 0.99.0 ==================== - Paul Shwartz contributed Twisted Conch, an SSHv2 implementation. - Twisted Zoot, an implementation of Gnutella for … [View More]

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[Twisted-Python] twisted/protocols/http.py stringToDatetime
by Lee Harr Aug. 17, 2002

Aug. 17, 2002

Hi; I am new to the list, and to Twisted. I was playing with the twisted webserver and found a bug that seems to come up when accessing web pages using an old version of netscape. I am using: Netscape Navigator 4.08 FreeBSD 4.5-RELEASE Twisted 0.19 (from FreeBSD ports) The error would occur when trying to reload a page which had been changed, and seems to be caused by the way the date is being sent from the browser to the server. I am able to work around the problem, by just using a pre-… [View More]

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[Twisted-Python] Deprecation consternation
by Steve Waterbury Aug. 17, 2002

Aug. 17, 2002

I understand that the way the authorizer machinery is assembled into twisted seems to be morphing (and not completely propagated into other twisted components yet, hence all the deprecation messages when running the unit tests), and I was trying to see if I could do things properly (the new way) in my code -- but not successfully yet, I guess, because when running this (shamelessly purloined and modified from the pgquoter.py example): from twisted.spread import pb from pdmengine import … [View More]

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[Twisted-Python] Question about pbquote example
by Steve Waterbury Aug. 14, 2002

Aug. 14, 2002

Glyph, First, thanks for extending the TwistedQuotes example with pbquote.py and quotetap2.py -- very helpful! Question: in pbquote.py, the QuoteReader's method is named perspective_nextQuote(), which returns the result of the quoter's getQuote() ... so I'm guessing you named the perspective method that way (instead of perspective_getQuote(), e.g.) to emphasize that the result one perspective gets from a service is not necessarily the same as the result another perspective would get, … [View More]

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[Twisted-Python] Concurrent data access with select() safe?
by Mukhsein Johari Aug. 14, 2002

Aug. 14, 2002

Hello all, I've managed to get a working custom webserver thanks to Donovan. My next question is (perhaps more due to my ignorance of how select works) how do you control concurrent access to data? In a multi-thread system you'd normally use devices like locks on the data / resource but what about an event based one like twisted? Say my server does reads and writes on some file/files. How do I ensure data integrity? Do I need some kind of locking mechanism or does using SelectReactor … [View More]

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[Twisted-Python] Patch for tcp.py
by Martin Sjögren Aug. 13, 2002

Aug. 13, 2002

Non-blocking connects seems to be handled wrong. In particular, EALREADY is handled like EISCONN, when it should be handled like e.g. EINPROGRESS. This is consistent for both unix and windows. Here's a patch: diff -u -r1.86 tcp.py --- tcp.py 6 Aug 2002 17:12:40 -0000 1.86 +++ tcp.py 13 Aug 2002 08:17:31 -0000 @@ -230,9 +230,9 @@ try: self.socket.connect(self.realAddress) except socket.error, se: - if se.args[0] in (EISCONN, EALREADY): … [View More]

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[Twisted-Python] Resource perplexity
by Steve Waterbury Aug. 12, 2002

Aug. 12, 2002

Yet another newbie question: Firewall realities being what they are, I'd like to "multiplex" several things over a single web server/port (80 for production, but for now anything), so I've been hacking at the xmlrpc example, but no luck so far (see attached attempt -- it runs, but gives a "404" for /RPC2 or /RPC2/ ...). Two questions: (1) Is this an architecturally sound use of twisted? (Optimal?) (And if not, suggestions? :^) (2) If so, what am I doing blockheaded? Thanks again … [View More]for your help and patience! -- Steve. Stephen C. Waterbury http://misspiggy.gsfc.nasa.gov/people/waterbug.html """ Derived from twisted xmlrpc example ... Adds a resource_mux resource to dispatch requests based on URL. ----------------------------------------------------------------- Hook up an object to XML-RPC. An example session: >>> s = xmlrpclib.Server('http://localhost:7080/RPC2/') >>> s.echo("lala") ['lala'] >>> s.echo("lala", 1) ['lala', 1] >>> s.echo("lala", 4) ['lala', 4] >>> s.echo("lala", 4, 3.4) ['lala', 4, 3.3999999999999999] >>> s.echo("lala", 4, [1, 2]) ['lala', 4, [1, 2]] """ from twisted.web import xmlrpc, resource from twisted.internet import defer import xmlrpclib class Echoer(xmlrpc.XMLRPC): """An example object to be published. Has five methods accessable by XML-RPC, 'echo', 'hello', 'defer's.echo('spam'), 'defer_fail' and 'fail. """ def xmlrpc_echo(self, *args): """Return all passed args.""" return args def xmlrpc_hello(self): """Return 'hello, world'.""" return 'hello, world!' def xmlrpc_defer(self): """Show how xmlrpc methods can return Deferred.""" return defer.succeed("hello") def xmlrpc_defer_fail(self): """Show how xmlrpc methods can return failed Deferred.""" return defer.fail(12) def xmlrpc_fail(self): """Show how we can return a failure code.""" return xmlrpclib.Fault(7, "Out of cheese.") def main(): from twisted.internet.app import Application from twisted.web import server # Resource multiplexer 'mux'; dispatches requests to Web, # XML-RPC, or SOAP handler, depending on base URL. Standard # base URLs: 'WWW', 'RPC2', 'SOAP' (probably should be # case-insensitive). mux = resource.Resource() mux.putChild('/RPC2/', Echoer()) # similarly for other handlers ... app = Application("thingy") app.listenTCP(7080, server.Site(mux)) app.run(0) if __name__ == '__main__': main() [View Less]

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[Twisted-Python] [patch] mktap web --resource
by Sune Kirkeby Aug. 12, 2002

Aug. 12, 2002

Hi, all! Attached is a short patch to add a --resource option to "mktap web", here is the --help for it: -r, --resource= <class> is the name (including module) of a subclass of twisted.web.resource.Resource to publish. So you can have any subclass of t.w.r.Resource be the 'root' of your web-server. I have also been working on a few other things: - an async Pytho-only PostgreSQL interface (not t.e.adbapi compatible, since I am not usre I like it's interface … [View More]

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[Twisted-Python] twisted.enterprise
by Jp Calderone Aug. 12, 2002

Aug. 12, 2002

Quick query. I'm using twisted.enterprise.adbapi.Augmentation in my latest project and I've just moved the createSchema() call into the mktap phase. This seems like a decent place to put it, as the schema need only be created once for each server application. However, 'mktap' no longer exits now. The .tap is created, but then it looks like a thread is left running somewhere. What's the right way to release connections acquired indirectly from the ConnectionPool? With the .close() method, … [View More]

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[Twisted-Python] PB over unix socket ... how?
by Steve Waterbury Aug. 11, 2002

Aug. 11, 2002

twisted gurus ... help! I want to use PB down in the guts of my application, but only later on will I actually be using the pb protocol over the network, so in the meantime I'd like to play it safe and have PB talk to other components over unix domain sockets. I know from wandering around in the internet module that there's lots of support for unix sockets and even an IReactorUNIX, but it's late and I'm a little dizzy and I figured someone could probably point me in the right … [View More]

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Re: [Twisted-Python] Twisted.web/DOMTemplate
by Donovan Preston Aug. 11, 2002

Aug. 11, 2002

On Saturday, August 10, 2002, at 05:54 AM, Stephen Thorne wrote: > Okay, I've been doing some hacking trying to make a small application > using > twisted.web and the .rpy stuff, using DOMTemplate. Awesome. I really appreciate people using it and providing feedback; designing in a vacuum is tough. [ snip ] > This (when twistd --nodaemon is used) prints 1 twice (instead of the > once > expected). [ snip ] > This is *bad*. viewMethod in this instance is > … [View More]

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[Twisted-Python] Twisted.web/DOMTemplate
by Stephen Thorne Aug. 10, 2002

Aug. 10, 2002

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Okay, I've been doing some hacking trying to make a small application using twisted.web and the .rpy stuff, using DOMTemplate. Ordinarily I'd chat about something like this on the irc channel, but it was dead quiet. Apart from me talking to myself of course. in the template: <P view='getBody'> in the response object def factory_getBody(self, request, node): print 1 return node This (when twistd --nodaemon is used) … [View More]

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[Twisted-Python] usage appears to be broke in cvs ...
by Steve Waterbury Aug. 9, 2002

Aug. 9, 2002

usage fails test_checkFlags and test_checkParameters -- Steve. Stephen C. Waterbury http://misspiggy.gsfc.nasa.gov/people/waterbug.html

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[Twisted-Python] sturdy
by Paul Boehm Aug. 7, 2002

Aug. 7, 2002

compare Twisted-0.19 behaviour to current cvs behaviour for this: --- from twisted.spread import sturdy from twisted.internet import reactor sturdy.PerspectiveConnector("localhost", 8787, "update", \ "secret", "sam", "update", 1).callRemote("moo") reactor.run() --- current cvs doesn't do reconnect attempts... this has to have broken in the last few days, but i don't know exactly where or when. paul

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