Mailman 3 November 2004 - 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] Get IP of connecting client in XMLRPC server
by Remy C. Cool April 28, 2013

April 28, 2013

Hello, On 18 May 2004, the following message was posted to this mailinglist: Jp Calderone exarkun at divmod.com wrote: >Daniel Newton wrote: > > I have a simple XML-PRC server similar to the example below: > > from twisted.web import xmlrpc, server > > class Example(xmlrpc.XMLRPC): > """An example object to be published.""" > > def xmlrpc_add(self, a, b): > """Return sum of arguments.""" > return a + b def … [View More]

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[Twisted-Python] Simple multiplex-relayer with twisted.protocols.smtp?
by bostik＠stinghorn.com Dec. 1, 2004

Dec. 1, 2004

Good day, hackers. I'm trying to implement a rather simple, localhost-bound mail relay with Twisted. The setup is follows: Internet --- MTA -> multiplexer (*) -> parallel filters -> MTA -> dest. Multiplexer marked with (*) is my doing. Filters are independent systems which accept mail according to destination domain and do their magic according to domain-wide settings. Different domains can have completely separate configs and even backends. I have read and tried to use … [View More]existing sample from http://twistedmatrix.com/pipermail/twisted-python/2003-October/005885.html and the surrounding thread, but unfortunately have not been so far able to get the system working. Basically the system should be rather trivial: accept everything, regardless of sender or recipient (frontal MTA has already bounced incorrect mails). Check recipient and forward to matching filter set. Use smtp.ESMTP for inbound, smtp.SMTPClient for outbound. However, the code snippet below freaks out. It now accepts unconditionally both sender and recipient but issuing DATA causes an immediate stacktrace with the following last error: File "/usr/lib/python2.3/site-packages/twisted/protocols/smtp.py", line 625, in do_DATA assert self.delivery exceptions.AssertionError: Tracing the problem, it is apparent that there is no delivery method in use and incidentally, this was apparently the bugging reason in the original (a year old now) problem. Call me stupid but I couldn't fix this by following the example and responses. Version of Twisted in use: 1.3, as packaged for Debian. (In time we'll get 2.0 as well.) Any help will be appreaciated. The leap from very simple Finger examples to smtp parts is rather long and steep... Code: [--snip--] #!/usr/bin/python from twisted.internet import reactor, protocol, defer from twisted.protocols import smtp from twisted.python import log import sys class RelayUtility: """Utility class for holding runtime values""" def __init__(self): self.maxconns = 20 self.active = 0 class RelayMessage(smtp.IMessage): def __init__(self): smtp.IMessage.__init__(self) self.msg = [] class RelayProtocol(smtp.ESMTP): """Relayer; sucks the mail in""" def __init__(self): self.util = util # Normal operations smtp.ESMTP.__init__(self) self.host = "nowhere.dot.invalid" def connectionLost(self, reason): self.util.active -= 1 def connectionMade(self): # The easiest way. Increments upon connection, decrements # upon disconnection; In case of full queue, just kick the client self.util.active += 1 if (self.util.active <= self.util.maxconns): smtp.ESMTP.connectionMade(self) else: self.sendCode(430, "Queue full. Try again later.") self.transport.loseConnection() # This can't be right def validateFrom(self, helo, origin): return smtp.Address(origin, None) # This is certainly not right, DATA barks def validateTo(self, user): return RelayMessage class RelayFactory(smtp.SMTPFactory): protocol = RelayProtocol util = RelayUtility() log.startLogging(sys.stdout) reactor.listenTCP(10025, RelayFactory()) reactor.run() [--snap--] -- Mika Boström \-/ "World peace will be achieved Bostik(a)stinghorn.com X when the last man has killed Software slave /-\ the second-to-last." -anon? [View Less]

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Re: [Twisted-Python] PyMedia & Tk - based mp3 sound recorder
by eltronic＠juno.com Nov. 30, 2004

Nov. 30, 2004

On Tuesday 30 November 2004 01:55, Petri Savolainen wrote: > I've tried to write a simple sound recorder for python. Basically, it > just reads sound from mic or line in, and encodes it to mp3 on the > fly. the use of psyco might actually be slowing you down. it can't help w/pymedia being a compiled extension and the UI isn't a likely source of bottleneck. also, you should subclass from object to give psyco something to work with. pymedia didn't recognize my sound device or I … [View More]

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[Twisted-Python] PyMedia & Tk - based mp3 sound recorder
by Petri Savolainen Nov. 30, 2004

Nov. 30, 2004

I've tried to write a simple sound recorder for python. Basically, it just reads sound from mic or line in, and encodes it to mp3 on the fly. See http://pymedia.org/tut/src/voice_recorder.py.html for a simple example I've taken the pymedia recorder code from. Works nicely - but no GUI etc. of course. I've added a very simple Tk-base GUI using twisted, using task.LoopingCall to drive the recorder loop that reads chunks data from sound device and encodes them. The problem is that the … [View More]sound is now garbled - it sounds as if the loop is not fast enough or it's dropping some sound data. Apart from twisted and Tk integration, the code should be essentially the same as the original example that works fine. I''ve tried with different task looping frequencies and even added Psyco optiomization to the code, and all this has made but tiny difference -and my PC is an AMD 2400+ with plenty of memory so I would think speed is not the issue here; the encoding preferences are mono, 22050Hz and 64kbit/s. The source code (about 120 lines in all) is attached - any advice or improvement suggestions would be greatly appreciated. Thanks, Petri import time, sys, urlparse, tkFileDialog import Tkinter as Tk import pymedia.audio.sound as sound import pymedia.audio.acodec as acodec from twisted.internet import task from twisted.internet import reactor, tksupport # constants STOPPED = 0 RECORDING = 1 # input params insrc = "VIA AC'97 Audio (WAVE)" format = sound.AFMT_U16_LE # encoder parameters params = { 'id': acodec.getCodecId("mp3"), 'bitrate': 64000, 'sample_rate': 22050, 'channels': 1 } class Recorder: def __init__(self, params=params): self.task = task.LoopingCall(self.process) self.status = STOPPED self.encoder= acodec.Encoder(params) # determine input source inputid=None for d in sound.getIDevices(): if d['name'] == insrc: inputid = d['id'] if not inputid: raise Exception("Invalid or no input source") self.snd= sound.Input(22050, 1, format, inputid) def process(self): #while 1: # snd.getPosition()<= secs: s= self.snd.getData() if s and len(s): for fr in self.encoder.encode(s): # We definitely should use mux first, but for # simplicity reasons this way it'll work also self.outfile.write(fr) #else: # time.sleep( .001 ) def start(self, file): self.outfile= file self.snd.start() self.task.start(.0000001) def stop(self): # Stop listening the incoming sound from the microphone or line in self.task.stop() self.snd.stop() self.outfile.close() class RecorderGUI: def __init__(self, root): frame = Tk.Frame(root) self.frame=frame self.startB = Tk.Button(frame, padx=20, pady=2, text="Start", command=self.startRecording) self.stopB = Tk.Button(frame, padx=20, pady=2, text="Stop", command=self.stopRecording, state=Tk.DISABLED) self.quitB = Tk.Button(frame, padx=20, pady=2, text="Quit", command=self.quitApplication) self.startB.pack(side=Tk.LEFT) self.stopB.pack(side=Tk.LEFT) self.quitB.pack(side=Tk.RIGHT) frame.pack() def setRecorder(self,recorder): self.recorder = recorder def startRecording(self): file = tkFileDialog.asksaveasfile(title="Enter file to save to") self.stopB['state'] = Tk.NORMAL self.startB['state'] =Tk.DISABLED self.recorder.start(file) def stopRecording(self): self.recorder.stop() self.stopB['state'] = Tk.DISABLED self.startB['state'] = Tk.NORMAL def quitApplication(self): if self.recorder.status == RECORDING: self.recorder.stop() reactor.stop() def run(): import psyco psyco.full() guiroot = Tk.Tk() guiroot.protocol("WM_DELETE_WINDOW", reactor.stop) guiroot.title("Sound recorder") tksupport.install(guiroot) gui=RecorderGUI(guiroot) gui.recorder = Recorder() reactor.run() if __name__ == '__main__': run() [View Less]

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[Twisted-Python] Reminder: PyCon 2005 call for proposals is open
by Itamar Shtull-Trauring Nov. 30, 2004

Nov. 30, 2004

http://www.python.org/pycon/2005/cfp.html

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[Twisted-Python] want to freeze twisted
by Iap Nov. 29, 2004

Nov. 29, 2004

I have a twistd-based web server by running a web.tap file like this: $twistd -o -f web.tap -l /var/log/twistd.log Great, it works. Then, I use cx_freeze to freeze it. $FreezePython --install-dir freeze_twistd twistd That is ok, lots of *.so have been copied into freeze_twistd/*. After moving those all into another machine, and run the executable $freeze_twistd/twistd I got complains on missing some modules. I realized that those twisted/* don't be freezed. Then, I try: $… [View More]

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[Twisted-Python] Weekly Bug Summary
by James Y Knight Nov. 29, 2004

Nov. 29, 2004

Bug summary ______________________ Since 2004-11-20 17:24:10.440000: Bugs opened: 17 Bugs closed: 19 Total open bugs: 315 (-2) New / Reopened Bugs ______________________ make epydoc stop ignoring zope interfaces (2 days ago) http://www.twistedmatrix.com/bugs/issue794 opened by radix [TRIAL] Unhandled exception in trial at result reporting time (yesterday) http://www.twistedmatrix.com/bugs/issue800 opened by exarkun Intermittent twisted.trial.test.test_util.… [View More]

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[Twisted-Python] WebDav example?
by Thomas Weholt Nov. 29, 2004

Nov. 29, 2004

Hi, I've seen the akadav twisted-based webdav module, but there's no documentation or examples in the archive. Can anybody show me how to use it to server files from a specificed directory? -- Mvh/Best regards, Thomas Weholt http://www.weholt.org

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Re: [Twisted-Python] How to use .rpy do upload ?
by Leon Nov. 29, 2004

Nov. 29, 2004

<form method="POST" enctype="multipart/form-data" action="test.rpy"> <input type="file" name="filename"> <input type="submit"> </form> #rpy script from twisted.web.resource import Resource class test(Resource): def render_POST(self,request): f = open("/root/basic_daemon/htdocs/test/test.txt","wb") #absolute path,the path must use chmod modify authorization f.write(request.… [View More]

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[Twisted-Python] Multiple delimiters in linereceiver
by Michael Mata Nov. 29, 2004

Nov. 29, 2004

Is it possible to use the LineReceiver protocol with multiple delimiters? I've run into situations where clients use either '\r\n' or a '\n'. To handle either situation, I set the delimiter as '\n' and just filter out the '\r' from lineReceived(). This fix works, but it sure is ugly. Has anyone run into a more elegant solution?

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[Twisted-Python] How to use .rpy do upload ?
by Leon Nov. 28, 2004

Nov. 28, 2004

I am a beginner,how can use .rpy do upload ???

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[Twisted-Python] tm.com website
by Mary Gardiner Nov. 28, 2004

Nov. 28, 2004

Just in case anyone wants to release 2.0 before the 28th... I'm going to be pretty much afk for the next two weeks (as will be Andrew, btw), so I won't be, for example, contactable about the website. I've got a nearly complete (well, suitable at least) 2.0 website in a branch in the TwistedWebsite svn repository. The major missing thing is websites for some of the projects. The major thing you would need to take note of when merging would be that I've essentially removed the /products … [View More]

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Re: [Twisted-Python] Twisted and Python 2.4c1
by Brian Warner Nov. 27, 2004

Nov. 27, 2004

Jp Calderone <exarkun(a)divmod.com> writes: > Attached is the output from a trial run using Python 2.4c1. There seems > to be a new problem in trial's signal handling code. Got it. Some of the signal-handling code was trying to setup a SIGKILL handler, which is an error at the C level but wasn't reported at the python level until 2.4. The tests are running again, 3 failures and 9 errors, all in test_trial. Sample attached. The buildslave is using 2.4c1 all the time now, right?… [View More]

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[Twisted-Python] Twisted and Python 2.4c1
by Jp Calderone Nov. 27, 2004

Nov. 27, 2004

Attached is the output from a trial run using Python 2.4c1. There seems to be a new problem in trial's signal handling code. Jp

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[Twisted-Python] twistd profiling
by Roland Hedberg Nov. 26, 2004

Nov. 26, 2004

Hi! Need to profile a twisted based application, way too slow ! twistd -p <file> produces profiling data in the named file If hotshot is available it's used ? Are there any nice tools for viewing profiling data ? Since it's the system that is slow and it contains several separate servers I'd also would like to have timestamps on events (preferably with a subsecond resolution) so I could trace flows. How can I ackomplish that ? Any support in twisted for it ? -- Roland

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[Twisted-Python] twisted and threading
by twisted-10152003＠atlas.lcs.mit.edu Nov. 26, 2004

Nov. 26, 2004

I wrapped a c library using swig and was hoping to make use of it in a twisted server I am writing. The issue is that the c library fundamentally blocks waiting for input that may never come. Is there a way from twisted to deal with this cleanly within the framework? I.e. some combination of adding a reactor.addSystemEventTrigger event and calling reactor.threadpool.stop seem like it should work but I haven't had any luck yet. (I saw all the previous posts on this topic, but the … [View More]

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[Twisted-Python] pollreactor 1sec timeout
by andrea＠cpushare.com Nov. 24, 2004

Nov. 24, 2004

Hello, Why is the pollreactor rescheduling once per second? I modified it like this and it still works so far. --- Twisted/twisted/internet/pollreactor.py.~1~ 2004-11-23 03:48:21.000000000 +0100 +++ Twisted/twisted/internet/pollreactor.py 2004-11-24 07:59:30.508119608 +0100 @@ -120,9 +120,7 @@ class PollReactor(default.PosixReactorBa POLLIN=select.POLLIN, POLLOUT=select.POLLOUT): """Poll the poller for new events.""" - if timeout is None: - … [View More]

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[Twisted-Python] XML-RPC, LineReceiver and defer
by Roland Hedberg Nov. 24, 2004

Nov. 24, 2004

Hi! I'm having problems with defer again :-( There is something about defer's that I just don't get, obviously. Anyway, I'd like to get tips on how to solve this problem: I have a module who on one side listens on XML-RPC and on the other uses the LineReceiver protocol to find some information it needs, to service the XML-RFC function. If I have understood it correctly xmlrpc.XMLRFC can return a defer and have the XMLRPC layer hold the reply until some event has happend. Now, the … [View More]

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[Twisted-Python] I want to use 2 reactors in same program, help me
by jacky lee Nov. 23, 2004

Nov. 23, 2004

My server used reactor to listen clients's requests. and at client side, I used reactor to connect to server Now I want to use 2 reactors in server side, the server will listen some clients's requests, and it will run a thread to connect to an other server, at the same time

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[Twisted-Python] protocols.ftp: FTP server: file upload support
by Ian Haywood Nov. 22, 2004

Nov. 22, 2004

I am looking to implement a 'virtual' FTP server, I've browsed the Twisted code in twisted.protocols.ftp.FTP, there doesn't appear to be a ftp_STOR method on ftp.FTP or ftp.DTP for receiving file uploads to the server. IFTPShell has a stor () method, so presumably someone thought about it. Is there any plan to add support for STOR on the server? Is there some technical reason making it really hard, or simply lack of time/demand? Ian Haywood -- PGP public key E750652E at wwwkeys.pgp.net … [View More]

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[Twisted-Python] LineReceiver Protocol
by Michael Mata Nov. 21, 2004

Nov. 21, 2004

Is there a way to extend the LineReceiver protocol to take action on a continued, periodic basis? Currently, the protocol only does work when a line is received. However, there are times when the script should take action without waiting to receive a line. For example, suppose a connection should be closed if it has been idle for more than X minutes. However, if connection is idle, it will not be sending commands. If no commands are sent, then no lines are received, which means there … [View More]

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[Twisted-Python] need help figuring out weird pb/trial interaction
by Jonathan Simms Nov. 21, 2004

Nov. 21, 2004

teratorn pasted the following code for me one night and was complaining that there was no traceback in the error reporting of trial. I spent about an hour and a half stepping through this code with pdb, and afaict, this isn't a trial bug. However, I don't understand why this is happening. --------------------------------------------- from twisted.internet import reactor from twisted.trial import unittest from twisted.trial.assertions import * from twisted.trial import util from twisted.… [View More]spread import pb from twisted.cred import portal, checkers, credentials, perspective from zope.interface import implements class MyRealm: implements(portal.IRealm) def requestAvatar(self, avatarId, mind, *interfaces): return (perspective.IPerspective, pb.Avatar(), lambda:None) class LiveServerTestCase(unittest.TestCase): def setUp(self): self.realm = MyRealm() portal = pb.Portal(self.realm) checker = checkers.InMemoryUsernamePasswordDatabaseDontUse(good='user') portal.registerChecker(checker) f = pb.PBServerFactory(portal) self.port = reactor.listenTCP(0, f, interface="127.0.0.1") self.portno = self.port.getHost().port def tearDown(self): self.port.stopListening() def testExample(self): f = pb.PBClientFactory() d = f.login(credentials.UsernamePassword("bad", "password"), "BRAINS!") c = reactor.connectTCP("127.0.0.1", self.portno, f) #this should throw an Exception because we're using the wrong user/pass #result = util.wait(d) #commenting the previous line, and uncommenting the next two lines #results in no output for the testExample ERROR d.addCallback(self._cb).addErrback(self._eb) return d def _cb(self, value): raise FailTest, "expecting Failure, got result" def _eb(self, failure): print failure return failure ---------------------------------------------- saving this and running trial teratorn.py i get the following output: ###-------------------------------------------------------------------------### teratorn LiveServerTestCase testExample ... [Failure instance: Traceback from remote host -- Traceback unavailable ] [ERROR] cleanup errors [ERROR] /home/slyphon/Projects/Twisted/trunk/twisted/trial/reporter.py:258: twisted.trial.reporter.BrokenTestCaseWarning: REACTOR UNCLEAN! traceback(s) follow: =============================================================================== [ERROR]: testExample (teratorn.LiveServerTestCase) ------------------------------------------------------------------------------- Ran 1 tests in 0.027s FAILED (errors=1) ###-------------------------------------------------------------------------### any suggestions as to why this is happening, i'm totally stumped... -Jonathan [View Less]

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[Twisted-Python] Weekly Bug Summary
by James Y Knight Nov. 20, 2004

Nov. 20, 2004

Bug summary ______________________ Since 2004-11-14 17:36:44.790000: Bugs opened: 3 Bugs closed: 13 Total open bugs: 317 (-10) New / Reopened Bugs ______________________ [TRIAL, PB] buggy PB/trial interactions (7 hours ago) http://www.twistedmatrix.com/bugs/issue788 opened by teratorn [CONCH] Conch client possibly not working (3 days ago) http://www.twistedmatrix.com/bugs/issue786 opened by jknight [DOCUMENTATION] [PATCH] Contributor agreement still speaks of CVS (… [View More]

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[Twisted-Python] Announcing: Minions of Mirth - Open Source RPG using Twisted
by Josh Ritter Nov. 19, 2004

Nov. 19, 2004

Hello!!!! My name is Josh Ritter and I am a veteran game programmer working on an Open Source RPG, called "Minions of Mirth". The engine is also Open Source and features some really cool technology. The game currently runs on Windows and OSX. Basically, "Minions of Mirth" is a 3d MUD... We are using Twisted for our live patching system, remote method calls and data cache (using spread), and distributed servers. We are also using Zope3 and the two compliment each other nicely... Please see … [View More]

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