Mailman 3 April 2007 - Twisted

[Twisted-Python] 64bit Installation Problems
by Tim Flink April 5, 2007

April 5, 2007

I am trying to install Twisted2.5.0 and have been having some problems. When I run the main setup.py, TwistedCore is installed into /usr/lib64/python23/ while everything else (conch, lore, mail, names, news, runner, web and words) is installed into /ur/lib/python23. So now when I try to import anything outside of core (like Web) I get: exceptions.ImportError: No module named web Is there a way to force TwistedCore to build and install as 32bit or force everything else to install as 64bit? … [View More]

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[Twisted-Python] SSL Negotiation / connectionMade() callback
by dkarbott＠comcast.net April 5, 2007

April 5, 2007

Hi: I've been playing around with twisted a little. I have written an internet.protocol.Protocol subclass that I want to run over SSL. It seems that the Protocol.connectionMade() callback gets invoked before SSL negotiation is complete. Ideally, I don't want my Protocol to send any data until the SSL negotiation is completley finished. Is there an easy way to get callback when the SSL negotiation is done? Info: Twisted Version: 2.0.1 (emerge'd from gentoo portage) Also, I have the SSL … [View More]

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[Twisted-Python] Using Twisted for distributed computation / experiment running?
by robomancer April 5, 2007

April 5, 2007

Hello all, I'm looking to use Twisted for distributing computation over a small number (~10) of PCs. I'm wondering if anyone else has some experience with this -- particularly if there is already a solution out there that I can use, so that I'm not reinventing the wheel. Here's a rough outline of what I'd like: Setup phase: given a config file containing a list of machines and the # of CPUs on each machine, update the source code on each machine and start an appropriate number of experiment … [View More]

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[Twisted-Python] Question about plugins tutorial
by Brian Costlow April 4, 2007

April 4, 2007

I've been reading through the tutorial section on Twisted Plugins at: http://twistedmatrix.com/projects/core/documentation/howto/plugin.html I have a question about this code (the actual plugin from the tutorial) from twisted.plugin import IPlugin from matsim import imatsim class SimpleMaterial(object): implements(IPlugin, imatsim.IMaterial) def __init__(self, yieldStressFactor, dielectricConstant): self._yieldStressFactor = yieldStressFactor self.dielectricConstant … [View More]

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[Twisted-Python] 3 questions about async, threading and dynamic protocol selection
by 甜瓜 April 4, 2007

April 4, 2007

Q1: How to determine a function is 'blocking action' or not? Any function needs CPU times. Indeed, a computational-intensive function is blocking action. But how small/fast function can be classified as non-blocking? Twist requires all user functions to be non-blocked. If reactor calls a blocking function, what will happen? In my mind, reactor maintains a command queue internally (just like windows message queue). The blocking function only postpones the execution of other queued functions, but … [View More]

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[Twisted-Python] Re: Using Twisted for distributed computation / experiment running
by Ed Suominen April 3, 2007

April 3, 2007

> robomancer <robomancer(a)gmail.com> writes: > >> I'm looking to use Twisted for distributing computation over a small >> number (~10) of PCs. I'm wondering if anyone else has some experience >> with this -- particularly if there is already a solution out there >> that I can use, so that I'm not reinventing the wheel. Take a look at the asynCluster sub-package within my Twisted-Goodies project, http://foss.eepatents.com/Twisted-Goodies. Source (SVN): … [View More]

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[Twisted-Python] listenTCP(), tcp.Port()
by Matthew Glubb April 2, 2007

April 2, 2007

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi All, I want to create a simple server that listens for data but I do not want to specify the port, I want the port to be automatically selected based on the currently available ports on the system. Is there any way to do this using Twisted? Using PHP it is a simple matter of: // Create a socket $sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP); // Get the port number used @socket_getsockname($sock, $ip, $port); Where $ip and $port … [View More]

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[Twisted-Python] 3 basic questions about connectionLost, reactor stop and design
by 甜瓜 April 2, 2007

April 2, 2007

Hi all, Expecting your kind answer regardless how primary my questions are. ^_^ Q1: Protocols has a method: connectionLost(self, reason). What is the type of the second parameter? I see it sometimes is twisted.internet.error.XXX. But who pass this param? Can I break a connection by passing my own 'reason'? The method transport.lostConnection is disappointment to me because I cannot pass any parameter to it to indicate the reason. Q2: How to cleanly exit a twist program? Eg: When a twisted … [View More]

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com April 1, 2007

April 1, 2007

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