Mailman 3 March 2008 - Twisted

[Twisted-Python] Announcing twotp 0.1, the Twisted implementation of the Erlang node protocol
by Thomas Hervé March 10, 2008

March 10, 2008

Hello all, Some weeks ago [1], I announced a project of mine that was implementing the Erlang node protocol with Twisted. After a little bit of feedback and motivation (thanks Anders Rune Jensen!), I've decided to create a project on its own called Twotp. For now, it's hosted on launchpad: https://launchpad.net/twotp, and I've made a quick 0.1 release, also available on the cheeseshop (so 'easy_install twotp' should to the right thing). I have already some features in the pipe (set and dict support, a simple twistd plugin), so I'll probably make another release real soon now. I also wanted to announce it before Pycon, so that people can talk to me about it there :). Again, every feedback, questions, bugs, are more than welcome. Using this list is probably OK for now, until we talk too much and get kicked out :). Thanks for your attention, -- Thomas [1]: http://twistedmatrix.com/pipermail/twisted-python/2007-December/016504.html

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Re: [Twisted-Python] writing back through open connections
by David Welch March 10, 2008

March 10, 2008

Matt, I read that howto/servers documentation and I have set up my code into a Factory and Protocol that handles incoming connections. I don't think I explained myself well enough though. When a client connects, the server may or may not being send data back right away so I need to be able to send data to that connected client on the servers terms. For example: Client 1 connects -- Factory instantiates Protocol class to handle communication (connection doesn't close) Client 2 connects -- Factory instantiates Protocol class to handle communication (connection doesn't close) <time has passed until server decides it needs to send a plugin to one of the clients> Server sends plugin to Client 1 So how can that server send data to client 1 if client 1 hasn't caused an event (The server side causes a certain event it should send data to a selected client). I understand that if a client sends data to the server I can than write back to the client using the dataReceived function within the Protocol instantiation. In this case once N number of agents have connected I want the server to push data to the clients without the Client writing to the server. Thanks again for the help.

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[Twisted-Python] Shiny new Qt4 Reactor
by Glenn Tarbox, PhD March 10, 2008

March 10, 2008

A very much refactored version of the Qt4 reactor is available. Not up to 100% just yet but very usable and more aligned with the Qt design approach. http://code.tarbox.org/qtreactor -glenn -- Glenn H. Tarbox, PhD glenn(a)tarbox.org

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[Twisted-Python] Twisted HTTP client with certificate ?
by Roland Hedberg March 9, 2008

March 9, 2008

Hi! It seems like the HTTP client in Twisted handles HTTPS and easily as HTTP connections. But, I can not find any place where I can specify a client certificate to use in the HTTPS connection. Is there something I have overlooked or is there another solution I can use, because I need to have certificates on both the server and the client side. -- Roland

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[Twisted-Python] Twisted Amazon Web Service module?
by Don Smith March 9, 2008

March 9, 2008

Has anyone built a Twisted module for use with any of Amazon's web service components? Specifically SimpleDB and SQS? I've looked at boto, which is really cool, but not Twisted... Regards, Don

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com March 9, 2008

March 9, 2008

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[Twisted-Python] twisted application server
by coder_gus March 8, 2008

March 8, 2008

Hi, I am in charge of writing an application server for a three-tier architecture system. It will receive requests&data trough an xml protocol agreed with the client devs. Basically it will work on a database and return the results to the client. The way I thought it is a twisted server accepts connections from the clients, a coordinator thread gets the request in a queue and pass them to free workers, which in turn upon completion will place the result in the thread coordinator response queue. The weird part is that another system places data in the database when a specific request comes in so I have to permanently pool the database for incoming data. This thing will be done with a pooling thread. So, my question is: is this kind of architecture good to implement? (asynchronous server and threaded workers) I might somehow miss some important details, but please feel free to ask questions. Thanks.

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[Twisted-Python] Choosing a logging system.
by IloChab March 7, 2008

March 7, 2008

I'm almost new with twisted and I'm going to implement a new application that will use Perspective Broker. I'll need logging facilities like python's logging module, in particular filtering functions and one logging server per node. I thought I could use twisted log-observers, but I saw i can't use socket into them. So my questions are: > can I use python logging module into a twisted application? > can I use socket that I handle by my self into a twisted application? Thak you in advnce for any answer. Ciao Licia.

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[Twisted-Python] deferred classes
by big_tyo＠inf.its-sby.edu March 7, 2008

March 7, 2008

hi can anyone explain to me how defer.deferredlist,defer.deferredqueue,defer.deferredlock,and defer.deferredsemaphore works? an explanation with example will be very much help to me learning twisted best regard, raditya ----------------------------------- Fakultas Teknologi Informasi Institut Teknologi Sepuluh Nopember http://www.ftif.its.ac.id/ -----------------------------------

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[Twisted-Python] trial (unit test) naming convention or obligation?
by Gabriel Rossetti March 7, 2008

March 7, 2008

Hello, I am starting to use the trial package and while looking at some examples I saw that some methods start with "test_" and some don't, so I thought the test cases must start with that, then I noticed in another file that camelCase was used, so what would have been "test_basic_op" in one file would be "testBasicOp" in another. I just want to be sure as I couldn't find any documentation other than "look at the code" (which I have), and since I never actually found the parser : if a method starts (contains it at the beginning) with the word "test", then the test suite will execute it, if not, then it won't, correct? Thanks, Gabriel

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