Mailman 3 March 2005 - Twisted

[Twisted-Python] Docs for twisted?
by Kevin 30 Mar '05

30 Mar '05

I am new to twistesd and was wondering if there are any online docs other then the ones at twistedmatrix.com, that could help me understand it better. Thanks Kevin

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[Twisted-Python] Re: [Twisted-commits] r13342 - Tests are good, even if they are woefully incomplete.
by Jp Calderone 30 Mar '05

30 Mar '05

On Tue, 29 Mar 2005 17:34:43 -0700, Alex Levy <mesozoic(a)wolfwood.twistedmatrix.com> wrote: >Author: mesozoic > Date: Tue Mar 29 17:34:41 2005 > New Revision: 13342 > > Added: > trunk/twisted/web2/test/test_wsgi.py > Log: > Tests are good, even if they are woefully incomplete. > Also, if they don't fail :) Could the currently failing test_wsgi tests be set as todo or skip, or be fixed? Thanks, Jp

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[Twisted-Python] test_adbapi under twisted 2.0 on win32
by Mike Taylor 29 Mar '05

29 Mar '05

I've installed twisted 2.0 and Python 2.4 on my winxp test box and I've also installed the following packages: postgresql 8.0 mysql 4.1 psycopg 1.1.2 mxTools 2.0 (needed by psycopg) mysql-python 1.2.0 The mysql test ran without a problem but I had to modifiy the pgsql test so it would work -- I needed to add host='localhost' to psycopg.connect() call. With that change it ran fine. I'll be working on testing firebird, gadfly and sqlite hopefully tomorrow. Also on my todo list is to create a win32 buildbot for twisted 2.0 --- Bear http://code-bear.com Open Source Applications Foundation (OSAF) http://www.osafoundation.org PGP Fingerprint = 9996 719F 973D B11B E111 D770 9331 E822 40B3 CD29

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[Twisted-Python] Twisted 2.x How To Fix : DeprecationWarning: Deferred.setTimeout is deprecated ?
by jarrod roberson 29 Mar '05

29 Mar '05

I have some older code that uses Deferred.setTimeout() what is the appropriate change/replacement for this functionality? I looked at the new code and don't understand the suggested solution to this warning -- If you don't know what you want, you probably need a nap.

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[Twisted-Python] Weekly Bug Summary
by James Y Knight 28 Mar '05

28 Mar '05

Bug summary ______________________ Since 2005-03-19 16:41:53.330000: Bugs opened: 13 Bugs closed: 13 Total open bugs: 333 (+0) Urgent: 3 (-4) Bug: 132 (+5) Feature: 130 (-1) Wish: 68 (+0) New / Reopened Bugs ______________________ ==== Urgent ==== TypeError in serialize methods of twisted.xish.domish (patch included) (4 days ago) http://twistedmatrix.com/bugs/issue946 opened by syt ==== Bug ==== Lore doesn't generate TOC correctly (3 hours ago) CLOSED http://twistedmatrix.com/bugs/issue951 opened by naz API Reference link broken (4 days ago) CLOSED http://twistedmatrix.com/bugs/issue944 opened by espeoneefi websetroot: Completely fails fresh install of Twisted 2.0.0 and Twisted Web 0.5.0 (4 days ago) http://twistedmatrix.com/bugs/issue945 opened by levi [DOCUMENTATION, WEBSITE] No PDF or PS versions of new docs on the website (3 days ago) CLOSED http://twistedmatrix.com/bugs/issue948 opened by ash [WEBSITE] "Go Siege" project link in the "Success Stories" page is outdated. (1 week ago) CLOSED http://twistedmatrix.com/bugs/issue941 opened by tirkal [DOCUMENTATION, FLOW, WEBSITE] Broken documentation link for Twisted Flow (3 days ago) CLOSED http://twistedmatrix.com/bugs/issue949 opened by ash BUG: childFDs mapping in process support breaks process termination (yesterday) http://twistedmatrix.com/bugs/issue950 opened by exarkun DeferredQueue mixes up and misapplies size and backlog parameters (4 days ago) CLOSED http://twistedmatrix.com/bugs/issue947 opened by logan Set up roundup buildslaves for individual Twisted subprojects (5 days ago) http://twistedmatrix.com/bugs/issue943 opened by radix New plugin unit tests should use directories beneath _trial_temp, not twisted/plugins/ (7 days ago) http://twistedmatrix.com/bugs/issue942 opened by exarkun [CONCH, DOCUMENTATION] Missing man page for cftp (1 week ago) http://twistedmatrix.com/bugs/issue939 opened by Tv [DOCUMENTATION, LORE] Missing man page for bookify (1 week ago) http://twistedmatrix.com/bugs/issue940 opened by Tv Bugs Closed ______________________ ==== Urgent ==== Split Twisted into many packages and release 2.0 (12 months ago) http://twistedmatrix.com/bugs/issue567 opened by itamarst, closed by radix [RELEASE MANAGEMENT] Don't include docs source .xhtml files in release tarballs (15 months ago) http://twistedmatrix.com/bugs/issue455 opened by itamarst, closed by radix t.test.test_plugin doesn't work in "deployed" mode (1 week ago) http://twistedmatrix.com/bugs/issue925 opened by marienz, closed by exarkun [DOCUMENTATION] Document "pid" and "status" attributes of Process transports (7 months ago) http://twistedmatrix.com/bugs/issue670 opened by exarkun, closed by radix BUG: Installer raises exception for Python 2.2 (1 week ago) http://twistedmatrix.com/bugs/issue933 opened by exarkun, closed by radix ==== Bug ==== Lore doesn't generate TOC correctly (3 hours ago) http://twistedmatrix.com/bugs/issue951 opened by naz, closed by naz API Reference link broken (4 days ago) http://twistedmatrix.com/bugs/issue944 opened by espeoneefi, closed by radix [DOCUMENTATION, WEBSITE] No PDF or PS versions of new docs on the website (3 days ago) http://twistedmatrix.com/bugs/issue948 opened by ash, closed by radix [WEBSITE] "Go Siege" project link in the "Success Stories" page is outdated. (1 week ago) http://twistedmatrix.com/bugs/issue941 opened by tirkal, closed by radix [DOCUMENTATION, FLOW, WEBSITE] Broken documentation link for Twisted Flow (3 days ago) http://twistedmatrix.com/bugs/issue949 opened by ash, closed by radix DeferredQueue mixes up and misapplies size and backlog parameters (4 days ago) http://twistedmatrix.com/bugs/issue947 opened by logan, closed by exarkun [XISH] [PATCH] restore priority sorting in xish/xpath.py (1 week ago) http://twistedmatrix.com/bugs/issue934 opened by ralphm, closed by radix ==== Feature ==== [CONCH] signal to conch to reconnect (2 weeks ago) http://twistedmatrix.com/bugs/issue916 opened by z3p, closed by z3p

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[Twisted-Python] Authenticating users and refering them to personal URLs based on the authentication result.
by xif xif 26 Mar '05

26 Mar '05

Hi I'm just starting with Nevow, and wanted to know if this is possible, and if so get a few leads. I want: 1) to authenticate users (from a form with a "username" and a "password" field) based on data stored in a database. 2) after authentication is performed, the user is sent to a URL based on some of the data from the database. For example, if the database query revealed him to be named "John Smith", he shall be refered to http://appserver.com/JohnDoe. Subsequently, he should remain at this URL, and all links should refer to addresses "below" his personal address. For example, http://appserver.com/JohnDoe/configuration, http://appserver.com/JohnDoe/mail, etc. Thanks in advance, Xif

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[Twisted-Python] Re: Twisted-Python Digest, Vol 12, Issue 43
by vaibhav gupta 25 Mar '05

25 Mar '05

hi me vaibhav gupta doing bachelor of engineering in india i am making on project on smtp server through python but dont no wher to start can any one help me i will highly thankful to him by sending me thre e books or any material iam searching for the book FUNDAMENTALS OF NETWORK PROGRAMING ON PYTHON BY JOHN GEORGEN. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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[Twisted-Python] ANN: Twisted version 2.0
by Christopher Armstrong 25 Mar '05

25 Mar '05

http://twistedmatrix.com/ TASMANIA (DP) -- Found on the Internet on 2005-03-22 by an anonymous programmer, Twisted 2.0 was obtained by local authorities and kept isolated for public safety and further study. On 2005-03-25, however, nano-probes were released from the package's surface and propagated the software to the public. Version 2.0 is said to have originated from ancient underground ruins somewhere in Australia, but their existence has not yet been verified. Christopher Armstrong, enslaved release archaeologist, was only able to say "Aieeya! Release?? What release? I just found this here tablet under some sand. Ia!" Project lead Glyph Lefkowitz was not available for comment, as he has fled the planet in fear of the repercussions of the software's new release. Record-keeper Mary Gardiner said "It will be interesting to see if the Twisted Sumo distribution collapses into a singularity. I guess there's a potential that Earth will be destroyed." As of this release, radix's soul, which has been included in Twisted since version 0.8.0, has been split off from the main project and given back to him to maintain in a separate sub-project. ---- Twisted 2.0 is a major upgrade, changing many things not only in the code but also in the structure of the project. As of 2.0, Twisted was split up into many sub-projects which you can read about in the Twisted Split FAQ[1]. 2.0 also marks the first release including the migration to the Zope Interface framework as opposed to Twisted's own built-in interface/adapter system. Another FAQ was made available[2] for those curious about the change. Many, tons, and lots of other changes have been made in this release. The NEWS[3] file contains a high-level overview of most of these changes. Changes in now-split subprojects are available on their individual project pages[4]. Tarballs are currently available at the twistedmatrix.com site, and packages for win32, Debian, and other OSes are currently on the way. 1: http://twistedmatrix.com/projects/core/documentation/upgrades/2.0/split.html 2: http://twistedmatrix.com/projects/core/documentation/upgrades/2.0/component… 3: http://twistedmatrix.com/projects/core/NEWS.txt 4: http://twistedmatrix.com/projects/ ---- WHAT IS TWISTED? Twisted is an event-based framework for internet applications which works on Python 2.2.X and 2.3.X. The following are the (important) modules included with Twisted: - twisted.application A "Service" system that allows you to organize your application in hierarchies with well-defined startup and dependency semantics, - twisted.cred A general credentials and authentication system that facilitates pluggable authentication backends, - twisted.enterprise Asynchronous database access, compatible with any Python DBAPI2.0 modules, - twisted.internet Low-level asynchronous networking APIs that allow you to define your own protocols that run over certain transports, - twisted.manhole A tool for remote debugging of your services which gives you a Python interactive interpreter, - twisted.protocols Basic protocol implementations and helpers for your own protocol implementations, - twisted.python A large set of utilities for Python tricks, reflection, text processing, and anything else, - twisted.spread A secure, fast remote object system, - twisted.trial A unit testing framework that integrates well with Twisted-based code. Twisted supports integration of the Tk, GTK+, GTK+ 2, Qt, Mac OS X, or wxPython event loop with its main event loop. The Win32 event loop is also supported. For more information, visit http://www.twistedmatrix.com, or join the list at http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python There are many official Twisted subprojects, including clients and servers for web, mail, DNS, and more. You can find out more about these projects at http://twistedmatrix.com/projects/ -- Twisted | Christopher Armstrong: International Man of Twistery Radix | -- http://radix.twistedmatrix.com | Release Manager, Twisted Project \\\V/// | -- http://twistedmatrix.com |o O| | Founding Member, Hobart Hacking Society w----v----w-+ -- http://hackingsociety.org/chapters/hash

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[Twisted-Python] looping in a non-blocking way
by Eugene Coetzee 24 Mar '05

24 Mar '05

Hi everybody. I have an application where I have several polling protocol instances servicing an array of COM ports driven by timers using reactor.callLater with typically 50 millisecond timing constants. I'm also using FTP client protocol instances to concurrently refresh locally cached data from ftp servers. These files may be quite large and during the text parsing routines I end up with blocking loops which are undesirable. Text files my be parsed in a loop with something like: def importFromText(self,data): datalines=data.split("\r\n") for line in datalines: arrin=[] arrin.insert(0,line[0:10]) etc.... For large files the above blocks - starving the other COM port protocols drivers of processing time. I have tried to "yield" to the reactor by calling reactor.iterate() in the above loop trying to do what you would normally accomplish with sleep(0) in a multithreaded application. This solution seemed to partially solve the problem but I'm experiencing intermittent stability problems with my polling protocol drivers that are normally quite robust simply hanging up. I'm now considering rewriting the above loop as a recursive function using reactor.callLater(0,recursiveTexParsingFunction(params)). I'm aware of twisted.flow but the examples given are a bit sparse and obscure and having tried something like http://twistedmatrix.com/documents/current/api/twisted.flow.flow.html - it appears I don't understand how to apply twisted.flow (iterators/coroutines) solve my particular problem. I hope I'm missing something obvious and more elegant since the above possible solutions seems like a lot of rework to solve a very simple problem. Any thoughts/advise would be much appreciated. regards, Eugene Coetzee Web -> www.reedflute.com ===============================================

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RE: [Twisted-Python] How to accept connections faster
by Sinang, Danny 24 Mar '05

24 Mar '05

Hi Mike, Thanks for the tip. My code is indeed running faster now. However, the reason for the loop was to somehow simulate late responses from a remote database server. I'm guessing I should put the database query code in the closeInABit method you mentioned like this : def closeInABit (): mydb = MySQLdb.Connect(db='mydatabase', host="10.10.10.10", user="myuser", passwd="mypassword") cursor = mydb.cursor() retval = '' cursor = mydb.cursor() cursor.execute("SELECT * FROM Employees WHERE empnum = 'ABCD'") retval = cursor.fetchone() if retval == SomeValue: self.transport.write("Login Ok") else: self.transport.write("Login not Ok") cursor.close() mydb.close() self.transport.loseConnection() Is this ok ? Or should there be some special Asycn coding technique I must also learn ? Regards, Danny ================================================================== Mike C. Fletcher wrote : Danny, Twisted is an asynchronous system. You *cannot* use that kind of blocking delay tactic in Twisted without totally destroying Twisted's functionality: > for i in range(10000000): > pass > print "Looping done." > self.transport.loseConnection() > should have been something like: def closeInABit( ): self.transport.loseConnection() reactor.callLater( 2, closeInABit ) # call after 2 seconds You'll want to read up on asynchronous programming (e.g. on the Twisted web site) to get a feel for how this model of programming networked apps works. Good luck, Mike Sinang, Danny wrote: > Hello. > > I ran the (Twisted) server code below and it accepts a client socket > connection every 1.3 seconds. The equivalent Synchronous socket code > accepts one every 2 seconds. > > Can anyone here suggest any code improvements for my Twisted server to > accept connections faster ? > > I've include the Synchronous socket server code and the client > generator code below as well. > ... ________________________________________________ Mike C. Fletcher Designer, VR Plumber, Coder http://www.vrplumber.com http://blog.vrplumber.com PyCon is coming...

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