Mailman 3 March 2005 - Twisted

Re: [Twisted-Python] How to accept connections faster
by Andrzej Leszczynski March 16, 2005

March 16, 2005

Hi, > print "Looping..." > for i in range(10000000): > pass > print "Looping done." regardles I am not sure the reason of the loop and how it fits into the design of Reactor, I wonder why it is *only* 2 seconds. On my laptop 1.1GHz, 256MB RAM it takes a way more to complete the loop and unblock the Reactor's "select". Second comment is why not xrange(10000000). With range my python2.3 starts allocating xxMB of memory. What machine,OS,python … [View More]

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[Twisted-Python] declare pb.Copyable only once
by Henning.Ramm＠mediapro-gmbh.de March 16, 2005

March 16, 2005

Hi there! At the moment I'm trying to wrap my mind around pb objects. I learned from the pb.Copyable howto (http://twistedmatrix.com/documents/current/howto/pb-copyable) that I must setUnjellyableForClass every object that could be sent from a client. I need a simple empty utility class like this: class Info(pb.Copyable): def __init__(self, obj=None): if obj: self.__dict__.update(obj.__dict__) Because I can use such in server as well as in client, I defined the class in the … [View More]

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[Twisted-Python] How to accept connections faster
by Sinang, Danny March 16, 2005

March 16, 2005

Hello. I ran the (Twisted) server code below and it accepts a client socket connection every 1.3 seconds. The equivalent Synchronous socket code accepts one every 2 seconds. Can anyone here suggest any code improvements for my Twisted server to accept connections faster ? I've include the Synchronous socket server code and the client generator code below as well. # ======================================================================== ================== # Twisted server code # =======… [View More]================================================================= ================== from twisted.protocols import basic from twisted.internet import reactor, protocol import time class MyChat(basic.LineReceiver): def connectionMade(self): print "Got a connection from on " + time.asctime() self.transport.write("Welcome. You are client number : ") print "Looping..." for i in range(10000000): pass print "Looping done." self.transport.loseConnection() def connectionLost(self, reason): pass def lineReceived(self, line): for c in self.factory.clients: c.message(line) def message(self, message): self.transport.write(message + '\n') def __init__ (self) : self.x = 1 self.duration = 60 print "Starting Twisted Async Server" print factory = protocol.ServerFactory() factory.protocol = MyChat factory.clients = [] reactor.listenTCP(7878,factory,10) reactor.run() # ======================================================================== ========= # Synchronous socket server code # ======================================================================== ========= from socket import * import sys import time s = socket(AF_INET, SOCK_STREAM) s.bind(('', 7878)) s.listen(10) print 'Login Server started on port 7878' x = 1 while 1: client,addr = s.accept() print str(x) + ". Got a conection from " + str(addr) + " on " + time.asctime() print "Looping..." for i in range(10000000): pass print "Loop done. Ready for connection..." print client.sendall ("Welcome. You are client number : " + str(x)) x += 1 # ======================================================================== ========= # Socket client code # ======================================================================== ========= from socket import * import sys import time s = socket(AF_INET, SOCK_STREAM) print 'Creating 20 clients...' x = 1 duration = 60 for i in range(20): print "Client " + str(x) + "." + " connecting to localhost at " + time.asctime() s = socket(AF_INET, SOCK_STREAM) s.connect (("127.0.0.1",7878)) print "Client Connected..." , time.asctime() s.sendall("Hello\r\n") data = s.recv(1024) print data x += 1 s.close() Regards, Danny [View Less]

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[Twisted-Python] Re: [Twisted-commits] r13185 - Applied patch from Ralph Meijer for issue 448
by James Y Knight March 16, 2005

March 16, 2005

I'll pick on your commit message dizzyd, but this is a general request: Can people not post log messages like this? It makes it impossible to write a NEWS file if commits look like this. I cannot go through and look at every bug report to see what the commit actually did, and I also cannot go back and read all the svn diffs. That would just take way too long. Any commits that looked like this I just completely ignored, which is a shame. The messages don't need to be excruciatingly … [View More]

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Re: [Twisted-Python] Twisted based LDAP protocol implemenation
by Andrzej Leszczynski March 16, 2005

March 16, 2005

--- Jeff Pitman <symbiont(a)berlios.de> wrote: > On Tuesday 15 March 2005 17:10, Tim Terleg�rd wrote: > > > I am looking for a Twisted based LDAP protocol > > > implementation (both versions 2 and 3). Is > anybody > > > aware of such, even in very early development > phase. > > > > There is ldaptor. Not sure where to download it > though, but it's > > definately available in debian and friends. > > Home: http://tv.debian.net/… [View More]

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[Twisted-Python] New feature details for NEWS
by James Y Knight March 16, 2005

March 16, 2005

So, if anyone wants to expand on items in this section of the NEWS file, that'd be great. I think we could do with more of an explanation about our major new features. If there are other important changes that you feel belong in this list, don't be shy, add them. > Major new features > ----------------------- > - Replaced home-grown components system with zope.interface. > - Split Twisted into multiple pieces. > - Relicensed: Now under the MIT license, rather than LGPL. &… [View More]

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[Twisted-Python] how to stop dataReceived while waiting a deferred to fire?
by Andrea Arcangeli March 15, 2005

March 15, 2005

My code is like this: def stringReceived(string): d = somesqlquery(string).addCallback(somecallback) Now before I can accept more data from the next stringReceived, I have to validate the "string" with the "somecallback". I don't want to read more data from the kernel _socket_ until I've the result of somecallback. The example in the docs is like this: ------------------------- class FingerProtocol(basic.LineReceiver): def lineReceived(self, user): self.factory.getUser(user … [View More]

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[Twisted-Python] potential bug in the reactor's handling events loop
by Andrzej Leszczynski March 15, 2005

March 15, 2005

Python 2.3, one of the latest Twisted version: I noted that under Linux there is not way to Control-C the reactor loop. After digging a little I found that following change helps: [root@d1501-0a10109c internet]# diff base.py{,.ori} > 302d301 < print "1",sysEvtTriggers 305d303 < print "2",`self._eventTriggers` 307,308c305 < for callable, args, kw in sysEvtTriggers[1]: < print "3" --- > > for callable, args, kw in sysEvtTriggers[0]: … [View More]

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[Twisted-Python] How to uninstall Twisted 2.0?
by Yves Goergen March 15, 2005

March 15, 2005

Hi everybody, I just installed Twisted 2.0.0a2 only to find it incompatible with the application I wanted. Now I need to go back to version 1.3 or whatever is the latest stable release before 2. Can I just install 1.3 over 2.0? How can I uninstall version 2, there's no prepared mechanism for this described where I can see it. TIA -- Yves Goergen "LonelyPixel" <nospam.list(a)unclassified.de> Unclassified NewsBoard Forum --> newsboard.unclassified.de Free (GPL), easy to use and … [View More]

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Re: [Twisted-Python] Re: Twisted and the Posh Module
by Ed Suominen March 15, 2005

March 15, 2005

Ah, so *that* is why the SANE GUI frontend I'm writing [1] pauses scanning and window events when it's using PIL to generate a thumbnail of the last page scanned, despite my use of deferToThread. A unit test I wrote with time.sleep() passed just fine, and I threw my hands up and walked away. Thanks for shedding light on what was very confusing and frustrating behavior. [1] spdf: "Scan to PDF," GPL. A Twisted-driven application with, shockingly, absolutely no networking. Coming soon to a … [View More]

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