Mailman 3 November 2008 - Twisted-web

Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

3 2

database best practices
by Martin Bright 21 Dec '08

21 Dec '08

Hi! What is the best way to implement synchronous DB access in a twisted application? I've read about defer.deferredGenerator, and various threads about how it's a stupid idea to even attempt this. Do I have restructure my code such that everything that depends on results from a database query is in a callback to a deferred object? -martin

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Athena & browser 2-connection limit
by Harald Blåtand 17 Dec '08

17 Dec '08

Hi there, Been thinking about this. It _would_ be cool if you could have more than one LivePage per browser session, like in popups, or even frames. What do you think: Is there any obvious & fundamental reason why the ReliableMessageDelivery stuff couldn't be modified, so that one instance of it could be shared between several PageWidgets? Harald

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Internal link shows port behind the server by ReverseProxyResource.
by Taito Horiuchi 30 Nov '08

30 Nov '08

Hi, I'm new to Twisted, but would like to try to use it as a web front server. I try to use ReverseProxyResource to provide internal server with port 20001 to port 80. The code below successfully provides the content of http://localhost:20001/as http://localhost/, but the internal link within the page shows port 20001. How can I fix this? Taito The code: from twisted.internet import reactor from twisted.web import server, proxy, vhost PORT = 20001 HostName = 'localhost' reverseProxy = proxy.ReverseProxyResource(HostName, PORT, '') root = vhost.NameVirtualHost() root.addHost(HostName, reverseProxy) site = server.Site(root) reactor.listenTCP(80, site) reactor.run()

1 0

using asynqueue as part of twisted application
by Martin Bright 26 Nov '08

26 Nov '08

The only way I have ever successfully used the wonderful Asynqueue <http://pypi.python.org/pypi/AsynQueue/0.3> module in a twisted application (using twistd) is by calling reactor.callWhenRunning(srvc.startup) where 'srvc' is a twisted.application.service object, and 'startup' is a function in which the queue is instantiated. Is there a more obvious way? Simply composing an object with a member that is a queue does not seem to work. The queue has to be started only when the reactor is running, which kinda makes sense, but is difficult for a noobie like me to figure out. -martin

2 1

Tabbed menus in Nevow
by Katheryn Buble 25 Nov '08

25 Nov '08

Is there a standard way to implement tabbed menus in Nevow? I would like something that looks like the tabbed.py example, http://www.divmod.org/trac/browser/trunk/Nevow/examples/tabbed/tabbed.py which uses nevow.taglibrary.tabbedPane, but where clicking on each tab regenerates its contents (for example in order to perform a database query). This could be achieved with a css menu where each tab is a link to a new page. Then the "tabs" would be reloaded each time the link is clicked. The tabbedPane looks good though and was wondering if a similar feature is provided somewhere. I'd rather not reinvent the wheel:-). I could not find any examples in the archive or documentation. Thank you, Katheryn

1 0

Nevow 0.9.32
by Tristan Seligmann 18 Nov '08

18 Nov '08

Hi all, I'm pleased to (belatedly, unfortunately) announce the release of Nevow 0.9.32. You can grab it here: http://divmod.org/trac/attachment/wiki/SoftwareReleases/Nevow-0.9.32.tar.gz… Changes from Nevow 0.9.31: 0.9.32 (2008-08-12): - A resource wrapper for on-the-fly gzip compression has been added. - A twistd plugin, 'athena-widget', is now available for serving single Athena widgets. - Basic Athena support for Safari added. - Added file name, line number, and column number information to slots and tags parsed from XML files in order to make debugging template/renderer interactions simpler. - A context-free flattener has been added. Fragment and its subclasses are now deprecated in favor of Element. - Javascript classes derived from the tabbedpane class can now override how tab selection is handled.

1 0

Negotiate/Kerberos Auth
by Phil Mayers 12 Nov '08

12 Nov '08

Interested parties might want to look at and comment on: http://twistedmatrix.com/trac/ticket/3532 http://twistedmatrix.com/trac/ticket/3530 ...the former being a "native" Negotiate auth method, the latter being a discussion of X-Remote-User and apache mod_auth_kerb. The code in there is very much "todo", but we use both method and Twisted Web extensively, so I'll put some work into it over the next few days.

1 0

Adding athena.LiveElement to an already-rendered LivePage
by Michał Pasternak 10 Nov '08

10 Nov '08

Hi, I want to be able to add athena.LiveElement to an already rendered LivePage. Quick Googling revealed this blog entry: http://techblog.ironfroggy.com/2006/01/nevow-post-render-injection-of.html I'd like to know, if there are any other, simpler ways to do that - or, maybe, is there a preferred method to do that in the API already? Regards, -- m

3 8

Having reactor run at the main thread make things harder for late adopters
by Tzury Bar Yochay 06 Nov '08

06 Nov '08

I will first describe my application in a single sentence. Write a server that can serve TCP/UDP clients on several ports, and let the clients communicate with each other in a predefined protocol, while each can 'talk' to the server in a different protocol/port. In my case where I picked up Twisted relatively late in the project I need Twisted to plugged into my applocation and not the my application plugged-into Twisted (at least at this stage). Is there a way to by-pass this limitation? At this stage the main problem I see is having transport.write will have data transmitted immediately when called from another thread.

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