Mailman 3 September 2003 - Twisted

[Twisted-Python] Re : executing .rpy in a thread
by ccom＠gmx.net 19 Sep '03

19 Sep '03

It is tempting to use Jamse's patch because the code does get more elegant. On the other hand the suggestion to develope pivotal to twisted makes a lot of sense too. I Hope this patch will become part of twisted soon. Thanks to bob for showing me the "conventional" way of doing it. I just tested his code and it works on my setup too. _stephan -- +++ GMX - die erste Adresse für Mail, Message, More! +++ Getestet von Stiftung Warentest: GMX FreeMail (GUT), GMX ProMail (GUT) (Heft 9/03 - 23 e-mail-Tarife: 6 gut, 12 befriedigend, 5 ausreichend) Jetzt selbst kostenlos testen: http://www.gmx.net

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[Twisted-Python] Application refactor
by Jp Calderone 19 Sep '03

19 Sep '03

Services are severely broken with the new code. twisted.mail is completely non-functional. Jp -- "Pascal is Pascal is Pascal is dog meat." -- M. Devine and P. Larson, Computer Science 340

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[Twisted-Python] UDP Factories
by Justin Johnson 19 Sep '03

19 Sep '03

I have a UDP protocol that subclasses DatagramProtocol. It is working fine, but I decided I wanted a protocol factory so I can keep track of the list of clients. I added the following class, which doesn't nothing currently... class MyProtoFactory(Factory): protocol = MyProto And then changed my reactor.listenUDP line to... reactor.listenUDP(config.SERVER_PORT, MyProtoFactory()) [justinj@chewie travis]$ ./udpserver.py Traceback (most recent call last): File "./udpserver.py", line 166, in ? reactor.listenUDP(config.SERVER_PORT, MyProtoFactory()) File "/usr/local/lib/python2.3/site-packages/twisted/internet/default.py", line 180, in listenUDP p = udp.Port(port, protocol, interface, maxPacketSize, self) File "/usr/local/lib/python2.3/site-packages/twisted/internet/udp.py", line 66, in __init__ assert isinstance(proto, protocol.DatagramProtocol) AssertionError Any idea what I'm doing wrong? The examples showed a UDP factory, but I don't quite see how this would work. Thanks. -Justin

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[Twisted-Python] Patch to shoutcast protocol
by Eric Mangold 19 Sep '03

19 Sep '03

Here is a patch to shoutcast.py. This makes it not crash when the server doesn't provide MP3 metadata. It also allows the user to request metadata or not. -Eric P.S. The diff came out weird, but it works as it should :)

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[Twisted-Python] Off topic question
by Uwe C. Schroeder 19 Sep '03

19 Sep '03

Hi, this is off topic, but I thought it is the best place to ask. I've written a program for the insurance business. It's based on a twisted pb server and wxPython clients. My customer possibly needs to extend the software pretty soon and I think I will be "outgunned" by that demand. Therefor I look for someone who possibly (but not necessarily) has a background in insurance and is adept programming python using twisted and wxPython. I know this is not the place for a job offer, nonetheless this is the the place where the skilled people gather. It's not determined if this expansion will happen, but I want to stay ahead. So if anyone has spare time for a project and could need some cash, get in touch with me. Payment is negotiable. To put the cards on the table, you'd have to surrender the copyright, so we'd need to adjust the payment accordingly. Anyone interested ? Drop me a mail. PS: I give a sh... about "computer science degree needed". All I need is someone who can do the job - and if you learned it at home on your C64, are a groceries salesperson and can do the job, that's fine with me :-) Thanks UC -- Open Source Solutions 4U, LLC 2570 Fleetwood Drive Phone: +1 650 872 2425 San Bruno, CA 94066 Cell: +1 650 302 2405 United States Fax: +1 650 872 2417

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Re: [Twisted-Python] Newbie:XMLRPC Server as plugin?
by Daniel Fern�ndez 18 Sep '03

18 Sep '03

Sorry, I'm newbie too.. I got confused also the first time, then I realized that what I wanted was just a server not a protocol (in my case a SOAP one). But then I found the way things are explained is running your server as a regular python script, but that prevents you from taking advantage from the facilities given by running your service like e.g. twistd -f myserver.tap. So I realized that what I really need is an Application so I can have a tap file. Everything seems easy but then while following the examples (the last one in Creating XML-RPC Servers and Clients - modified to get a tap file) I get an unexpected error. I'm using Twisted 1.0.7 with SOAPpy 0.10.2 and python 2.3 on windows 2000 the code is a bit modified, I removed the quoters logic and changed the last line from: application.run(save=0) ---------> application.save("start") in order to get a tap file <code> from twisted.web import soap, xmlrpc, resource, server class XMLRPCQuoter(xmlrpc.XMLRPC): def xmlrpc_quote(self): return 'Hola' class SOAPQuoter(soap.SOAPPublisher): def soap_quote(self): return 'Hola' def main(): from twisted.internet.app import Application app = Application("xmlrpc") root = resource.Resource() root.putChild('RPC2', XMLRPCQuoter()) root.putChild('SOAP', SOAPQuoter()) app.listenTCP(7080, server.Site(root)) return app application = main() if __name__ == '__main__': application.save("start") </code> I can't find what is going wrong here, this is the log I'm getting when I try to run xmlrpc-start.tap D:\Python23\Lib\site-packages>twistd -f xmlrpc-start.tap 2003/09/18 20:08 Hora de verano de MÚxico [-] Log opened. 2003/09/18 20:08 Hora de verano de MÚxico [-] twistd 1.0.7 (D:\PYTHON23\python.e xe 2.3.0) starting up 2003/09/18 20:08 Hora de verano de MÚxico [-] reactor class: twisted.internet.de fault.SelectReactor 2003/09/18 20:08 Hora de verano de MÚxico [-] Loading xmlrpc-start.tap... 2003/09/18 20:08 Hora de verano de MÚxico [-] Warning! Loading from __main__: X MLRPCQuoter 2003/09/18 20:08 Hora de verano de MÚxico [-] Traceback (most recent call last): 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 317, in runApp 2003/09/18 20:08 Hora de verano de MÚxico [-] application = loadApplication( config, passphrase) 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 210, in loadApplication 2003/09/18 20:08 Hora de verano de MÚxico [-] return decode(filename, data) 2003/09/18 20:08 Hora de verano de MÚxico [-] File "D:\PYTHON23\Lib\site-packa ges\twisted\scripts\twistd.py", line 188, in decode 2003/09/18 20:08 Hora de verano de MÚxico [-] application = pickle.loads(dat a) 2003/09/18 20:08 Hora de verano de MÚxico [-] AttributeError: ('Ephemeral instan ce has no __call__ method', <twisted.persisted.styles.Ephemeral instance at 0x00 FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] Failed to load application: ('Ephe meral instance has no __call__ method', <twisted.persisted.styles.Ephemeral inst ance at 0x00FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] Traceback (most recent call last): File "D:\PYTHON23\scripts\twistd.py", line 32, in ? run() File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 4 48, in run runApp(config) --- <exception caught here> --- File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 3 17, in runApp application = loadApplication(config, passphrase) File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 2 10, in loadApplication return decode(filename, data) File "D:\PYTHON23\Lib\site-packages\twisted\scripts\twistd.py", line 1 88, in decode application = pickle.loads(data) exceptions.AttributeError: ('Ephemeral instance has no __call__ method', <twisted.persisted.styles.Ephemeral instance at 0x00FEB580>, ()) Failed to load application: ('Ephemeral instance has no __call__ method', <twist ed.persisted.styles.Ephemeral instance at 0x00FEB580>, ()) 2003/09/18 20:08 Hora de verano de MÚxico [-] after that it just return to the prompt. any help would be really appreciated. thanks _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963

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[Twisted-Python] Easy GTK+Twisted+Networking Tutorial
by Daniel Hawton 18 Sep '03

18 Sep '03

I am still learning GTK, and I want to write an application that shows information based on data received in a Socket. I was told Twisted helps with this, and am looking for an example/simple tutorial that could explain how to use Twisted, instead of having to use Threads. Thanks, Daniel

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RE: [Twisted-Python] Newbie:XMLRPC Server as plugin?
by Nesbitt, Steve 18 Sep '03

18 Sep '03

Thanks Itamar. I've been reviewing the howto and have that working. My next step, however, was to turn that example into an actual plugin following the QuoteD plugin example which has three parts: - quoters.py => contains business logic - quoteproto.py => contains the protocol definition - quotetap.py => application interface/wrapper My problem is coming up with the xmlrpc equivalent of quoteproto.py which looks like this: from twisted.internet.protocol import Factory, Protocol from twisted.internet.app import Application class QOTD(Protocol): def connectionMade(self): self.transport.write(self.factory.quoter.getQuote()+'\r\n') self.transport.loseConnection() class QOTDFactory(Factory): protocol = QOTD def __init__(self, quoter): self.quoter = quoter What I can't figure out what this should look like for an xmlrpc server. It appears (to me at least) that a fundamental function of the factory method is to set the protocol. But I don't know what this should be for xml-rpc and since twisted appears to do the right thing already, I don't really want to rewrite the connectionMade, etc. methods. I suppose the core issue is that in order to create a plugin I need to call: app.listenTCP(port, factory) and I don't know what factory object to pass or how to get it. Thanks, -steve Steve Nesbitt Senior Configuration Manager The Cobalt Group snesbitt(a)cobaltgroup.com -----Original Message----- From: Itamar Shtull-Trauring [mailto:itamar@itamarst.org] Sent: Thursday, September 18, 2003 10:10 AM To: twisted-python(a)twistedmatrix.com Subject: Re: [Twisted-Python] Newbie:XMLRPC Server as plugin? On Thu, 18 Sep 2003 09:47:40 -0700 "Nesbitt, Steve" <snesbitt(a)cobaltgroup.com> wrote: > I would like to implement an XML-RPC server as a plugin (using the > QuoteD how-to as an example) and can't figure out how to do so. In > particular I don't understand how to create the protocol created as > part of the factory. Protocols are created by the factory when the port you are listening gets an incoming connection - the factory's buildProtocol is called and the resulting protocol is connected to the transport for the new connection. In any case, Twisted already has a nice XML-RPC server framework, documented at http://twistedmatrix.com/documents/howto/xmlrpc - it should support anything you might want to do with a XML-RPC server. -- Itamar Shtull-Trauring http://itamarst.org/ Available for Python & Twisted consulting _______________________________________________ Twisted-Python mailing list Twisted-Python(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python This e-mail transmission contains information intended only for the use of the recipient(s) named above. Further, it contains information that may be privileged and confidential. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this message (including any attachments) is strictly prohibited. If you have received this e-mail in error, please notify the sender by reply e-mail and then delete this message from your mail system. Thank you for your compliance.

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[Twisted-Python] Newbie:XMLRPC Server as plugin?
by Nesbitt, Steve 18 Sep '03

18 Sep '03

All: Newbie alert! I would like to implement an XML-RPC server as a plugin (using the QuoteD how-to as an example) and can't figure out how to do so. In particular I don't understand how to create the protocol created as part of the factory. Can anyone provide some clues/code? Thanks! -steve Steve Nesbitt Senior Configuration Manager The Cobalt Group snesbitt(a)cobaltgroup.com This e-mail transmission contains information intended only for the use of the recipient(s) named above. Further, it contains information that may be privileged and confidential. If you are not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this message (including any attachments) is strictly prohibited. If you have received this e-mail in error, please notify the sender by reply e-mail and then delete this message from your mail system. Thank you for your compliance.

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[Twisted-Python] ANN: CVSToys 1.0.9 (for Twisted 1.0.7)
by Kevin Turner 18 Sep '03

18 Sep '03

Greetings, It is my pleasure to inform you that CVSToys 1.0.9 has been released. That means you can finally get rid of all those DeprecationWarnings which fill your screen every time you commit, if you've upgraded your Twisted version past 1.0.6. Things are changing in PBService -- in particular, there may no longer be more than one Service (or a Service and a Manhole) on a single port. This may break things for some of you, but it also may have the pleasant side-effect of it may fixing that long-standing bug with freshcvs crapping out if it fails to grab the default pb port on start-up. Unfortunately I can't guarantee that .tap files with PBServices or manholes in them will still work, you may have to re-mktap them. And you can expect more changes around PBService when Twisted 1.0.8 comes out, as we migrate to newcred. (Just tuning in? CVSToys contains Fresh CVS, a CVS commit monitoring daemon which can deliver commit messages over a variety of protocols (e-mail, chat, web, etc.) and automate other tasks, such as back-up or auto-check-out.) You can find CVSToys at http://purl.net/net/CVSToys A big thanks to Divmod (www.divmod.com) for sponsoring our web hosting, and tummy.com for the CVS server. Share and enjoy, - Kevin -- The moon is last quarter, 57.4% illuminated, 21.4 days old.

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