Twisted July 2004

twisted@python.org

49 participants
50 discussions

[Twisted-Python] Small Docu fix
by Andreas Kostyrka 09 Jul '04

09 Jul '04

The ImportError is nice, but for the records it should be documented: :) Index: INSTALL =================================================================== --- INSTALL (revision 11042) +++ INSTALL (working copy) @@ -1,6 +1,7 @@ Requirements Python 2.2 or later. + ZopeInterfaces (http://zope.org/Products/ZopeInterface) SSL/TLS: PyOpenSSL 0.5.1 or later (http://pyopenssl.sf.net) Serial: PySerial (http://pyserial.sf.net)

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Re: [Twisted-Python] Spread or SOAP
by Sergio Trejo 09 Jul '04

09 Jul '04

Mr. Ripton, Thank you for your very kind and helpful response. I will most definitely give PB a spin since my project is in-house and thus I can run Python on both sides of the conversation. I didn't realize that SOAP is Microsoft FUD, as I thought SOAP is a W3C standard. Is W3C the committee that Microsoft is trying to manipulate? Thanks again for your hepful feedback. Python really rocks the world and I think will continue to do so for a long time to come. Sergio >From: David Ripton <dripton(a)ripton.net> >Reply-To: Twisted discussion stuff <twisted-python(a)twistedmatrix.com> >To: Twisted discussion stuff <twisted-python(a)twistedmatrix.com> >Subject: Re: [Twisted-Python] Spread or SOAP >Date: Mon, 5 Jul 2004 16:10:55 -0700 > >On 2004.07.04 09:40:32 +0000, Sergio Trejo wrote: > > Hi, I'm new to Twisted and just discovered it today. It looks to be >amazing > > and versatile. I want to use the Twisted Web server to receive an HTTP >POST > > and when the POST comes in, I want to relay a message to another object > > that happens to be running on the same physical machine (although in the > > future it may not be running on the same machine). The message that will >be > > sent will contain some basic data. To do this, should I use Spread with >the > > Perspective Broker for interobject communication (can I even do this >from, > > say, a cgi application in Twisted Web server), or should I do something >a > > bit more fancier such as using SOAP? > >PB is excellent, within its range of applicability. If you control both >sides, can choose Python, and prefer async operation, I highly recommend >it. >Yeah, it should be easy to integrate with other Twisted bits. > >XML-RPC is reasonable, if you need cross-language support or more buzzword >compliance. > >SOAP is XML-RPC attacked by Microsoft and a committee. It's hard to read >the specs without laughing, and harder to try to interoperate with someone >using Microsoft's broken^Wenhanced implementation of it without crying. > >But what did you expect to hear on a Twisted list? > >-- >David Ripton dripton(a)ripton.net > >_______________________________________________ >Twisted-Python mailing list >Twisted-Python(a)twistedmatrix.com >http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

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[Twisted-Python] wxPython integration solution
by Matthew Sherborne 08 Jul '04

08 Jul '04

Sorry forgot the URL. http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286201 It's long because there's a demo chat app in there... Matthew Sherborne Sherborne International Ltd www.sherborneinternational.com

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[Twisted-Python] wxPython integration solution
by Matthew Sherborne 08 Jul '04

08 Jul '04

Hi All, I've posted a solution for wx - twisted integration. Based on Itamars suggestions of two threads. It's very easy to use. To call a twisted method from wx thread just do: netCall(someTwistedThing, myParam, kword1=x, kword2=1) It returns a deferred, that will be calledback and erredback safely in the wx thread. Same for calling gui stuff from a twisted thread. guiCall(someGuiThing, (p1, p2)) or even easier create an interlayer object: from twisted.protocols.basic import LineReceiver class Gui2Net(LineReceiver): ... def send(self, someData): self.transport.send(someData) send = makeNetSafe(send) In this example an instance of GuiNet can be used safely by the gui thread, it can send data, just like if it was a normal twisted call; it will return a deferred. "makeNetSafe" means make this net call safe to be called from the gui. There is also a "makeGuiSafe" call, but I haven't tested it. You can still use the wrapper object in your test cases if you dont have a gui. If no TwistedThread is instansiated netCall and makeNetSafe just pass through. Comments appreciated. Matthew Sherborne Sherborne International Ltd www.sherborneinternational.com

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[Twisted-Python] Sincere Thanks!
by Sergio Trejo 07 Jul '04

07 Jul '04

My head keeps spinning as I'm reading about Twisted and all that it can do. I think Twisted is a great word for what it does to fire the human neurons in ones brain when one first discovers Twisted (its like discovering a new planet)! I just finished reading the document titled, "Network Programming for the Rest of Us" and its really awesome. Network programming is not for the faint of heart and abstractions such as Deferred and using Event Loops for an asynchronous interdependent world that we now live in is just way way cool (as is the simplicity and the namespace being well done). It may not be as big of a deal for those who have lived closer to the world of networked programming, but I think Twisted represents a major leap for humankind because it truly opens the doors of opportunity for programming really interesting and dynamic applications (especially for those who need to bridge information science with another discipline or two). The Twisted contributors are "gods" IMHO! Thank you thank you thank you!!!! Sergio _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

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[Twisted-Python] Max number of simultaneous TCP connection
by klcheung0829＠sinaman.com 06 Jul '04

06 Jul '04

Is there a maximum number of simultaneous connection for the TCPServer? I already set the ulimit -n 10000. But it fails to accept connection once it reaches about 1024. Any way to increase it ? Thanks. ========================================================================================== 進修英語, 機會處處! 兼享政府進修資助 - http://adimages.sina.com.hk/WSI_0704.html 七．一遊行最新發展 - http://news.sina.com.hk/focus/20040628/ 歐洲國家盃最後決戰！ - http://euro04.sina.com.hk/

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Re: Re: [Twisted-Python] Max number of simultaneous TCP
by klcheung0829＠sinaman.com 06 Jul '04

06 Jul '04

I checked the ulimit is increased. I am new to the /proc, may I know how may I change the kernel setting there? Yes, I am exactly trying to see how much connection Twisted-Python can handle. ========================================================================================== 進修英語, 機會處處! 兼享政府進修資助 - http://adimages.sina.com.hk/WSI_0704.html 七．一遊行最新發展 - http://news.sina.com.hk/focus/20040628/ 歐洲國家盃最後決戰！ - http://euro04.sina.com.hk/

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[Twisted-Python] PyProtocols 0.9.3 Release Candidate 1
by Phillip J. Eby 06 Jul '04

06 Jul '04

PyProtocols 0.9.3 release candidate 1 is now available for download. Assuming there are no bugs reported in the next 3-4 weeks, it will become the 0.9.3 final release in early August. What is PyProtocols? -------------------- PyProtocols is an extended implementation of PEP 246, adding a new "declaration API" that lets you easily define your own interfaces and adapters, and declare what adapters should be used to adapt what types, objects, or interfaces. Using PyProtocols, you can easily make flexible frameworks that you or other developers can extend without needing to modify the base framework. PyProtocols interfaces can interoperate with those of Twisted and Zope, or can be used entirely standalone. PyProtocols may be used, modified, and distributed under the same terms and conditions as Python or Zope. What's new in version 0.9.3rc1? (Highlights) -------------------------------------------- * Adapter factories can now accept just one argument, the way Twisted and Zope adapters do. * Interface and protocol objects can be called, as a shortcut for 'adapt()' (as Zope and Twisted interfaces do) * You can now more easily install PyProtocols without a C compiler, using the '--without-speedups' option to 'setup.py' (see the README.txt file for details.) * Numerous other bug fixes and enhancements - see CHANGES.txt for details. IMPORTANT: If you are upgrading from a previous version of PyProtocols, please read UPGRADING.txt for important information. Certain rarely-used features have been deprecated, and others have changed slightly. Most users should not experience any problems (except perhaps for DeprecationWarnings), but please be sure to verify this before you upgrade any production code from 0.9.2 to 0.9.3. PyProtocols Resources --------------------- * Upgrading to PyProtocols 0.9.3 (and a look ahead to 1.0) http://peak.telecommunity.com/protocol_api/UPGRADING.txt.html * Detailed Changes for all releases: http://peak.telecommunity.com/protocol_api/CHANGES.txt.html * Release notes, installation instructions, and browsable API docs: http://peak.telecommunity.com/protocol_api/ * Source and Binary Releases: http://peak.telecommunity.com/dist/ * Reference Manual (HTML): http://peak.telecommunity.com/protocol_ref/module-protocols.html * Reference Manual (PDF): http://peak.telecommunity.com/protocol_ref.pdf * Browsable CVS Repository: http://cvs.eby-sarna.com/PyProtocols/

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[Twisted-Python] Spread or SOAP
by Sergio Trejo 06 Jul '04

06 Jul '04

Hi, I'm new to Twisted and just discovered it today. It looks to be amazing and versatile. I want to use the Twisted Web server to receive an HTTP POST and when the POST comes in, I want to relay a message to another object that happens to be running on the same physical machine (although in the future it may not be running on the same machine). The message that will be sent will contain some basic data. To do this, should I use Spread with the Perspective Broker for interobject communication (can I even do this from, say, a cgi application in Twisted Web server), or should I do something a bit more fancier such as using SOAP? Thank you for any suggestions -- I am really happy to see (initially at the surface before I dig into it further) all of the capabilities of Twisted as I think Python is a really great language! Sincerely, Sergio _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

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[Twisted-Python] Twisted.Persisted ~ ZODB
by Eugene Coetzee 02 Jul '04

02 Jul '04

Hi, Being new to both Twisted and ZODB and not finding too much info on Twisted.Persisted by googling I have decided to post this question. I have also noticed a few projects running Twisted "on top of" ZODB as it were. I get the impression that Twisted.Persisted is more of an utility add-on to Twisted whereas ZODB is a full fledged object database. Still - I would very much like to use Twisted.Persisted for trancient data/metadata in a new project I'm tackling cause it is always good to minimize dependencies and I know I can use postgreSQL with Twisted for heavy duty stuff - which I still believe a better option than OODB. How does Twisted.Persisted compare to ZODB - if such a comparison can be made? Any other OODB's to be considered for use with Twisted? I would also very much appreciate some links to on-line docs/examples regarding Twisted.Persisted if they exist. kind regards, Eugene Coetzee =============================================== Web -> www.reedflute.com ===============================================

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Twisted July 2004