Mailman 3 January 2007 - Twisted

[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 05 Aug '21

05 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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[Twisted-Python] Get IP of connecting client in XMLRPC server
by Remy C. Cool 28 Apr '13

28 Apr '13

Hello, On 18 May 2004, the following message was posted to this mailinglist: Jp Calderone exarkun at divmod.com wrote: >Daniel Newton wrote: > > I have a simple XML-PRC server similar to the example below: > > from twisted.web import xmlrpc, server > > class Example(xmlrpc.XMLRPC): > """An example object to be published.""" > > def xmlrpc_add(self, a, b): > """Return sum of arguments.""" > return a + b def xmlrpc_whatIsMyAddress(self): return self.transport.getPeer().host > > if __name__ == '__main__': > from twisted.internet import reactor > r = Example() > reactor.listenTCP(7080, server.Site(r)) > reactor.run() > > I want to be able to get the address of the client that calls the xmlrpc > method can anyone help me with this? This solution didn't work because 'transport' isn't a property of the Example class. I'm currently in the process of changing from a customized SimpleXMLRPCServer to a twisted XMLRPC server solution and I need to insert the client IP into the attributes passed to the called xmlrpc method. Anyone who knows the answer and is willing to share the info? Regards, Remy

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[Twisted-Python] Reconnecting PB Client
by Don Smith 12 Sep '07

12 Sep '07

Does anyone have some example code for building a reconnecting PB client? This is what I have now: from twisted.spread import pb from twisted.internet import reactor from twisted.python import util events = pb.PBClientFactory() reactor.connectTCP("localhost", 8789, events) queue = events.getRootObject()

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[Twisted-Python] Producers / Consumers and more examples tutorials?
by jarrod roberson 13 Mar '07

13 Mar '07

Are there any more concrete examples or tutorials of using Producers and Consumers?

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[Twisted-Python] How to set host/IP Address for reactor.listenTcp()
by jian wu 16 Feb '07

16 Feb '07

Hi, I'm new to Twisted, I only had a limited experience using python and its asyncore/asynchat. I went through Twisted Howto doc. I just realized that reactor.listenTcp() will only take "listening port" as its parameter. If I want to run a Twisted Program on a machine with multiple network cards(NICs) associated with different IP addresses and I only want my program listening on a specific IP address or NIC, is there a way I can pass listening IP address to reactor.listenTcp() so it'll only accept the connections from a certain NIC/IP Address? Thanks a lot for your help! Jian

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[Twisted-Python] Support for ICMP ping?
by Nicolas D. Cesar 08 Feb '07

08 Feb '07

I've been googling if there is any 'ICMP ping' support in Twisted. I've encounter ancient replies: http://twistedmatrix.com/pipermail/twisted-python/2003-August/005542.html I wonder if today is any ICMP support. I've tried to search the source tree[1], and doesn't seem. My actual needs is creating a DeferredList with "ping-testers" for different IPs, just to check if there up or not. I know I can end up using twisted.internet.utils.getProcessOutput and calling ping, as I would normally do from command line. For other newbies as me in the same situation please read: http://twistedmatrix.com/users/moshez/talk.html and search for 'getProcessOutput' ;-) Greetings, [1] my search was: -------------------------------------------------------------------- $ grep -C3 -ir icmp * internet/protocol.py- internet/protocol.py- internet/protocol.py-class AbstractDatagramProtocol: internet/protocol.py: """Abstract protocol for datagram-oriented transports, e.g. IP, ICMP, ARP, UDP.""" internet/protocol.py- internet/protocol.py- transport = None internet/protocol.py- numPorts = 0 -- internet/protocol.py- def connectionRefused(self): internet/protocol.py- """Called due to error from write in connected mode. internet/protocol.py- internet/protocol.py: Note this is a result of ICMP message generated by *previous* internet/protocol.py- write. internet/protocol.py- """ internet/protocol.py- -------------------------------------------------------------------- -- Nicolás D. César <ncesar(a)lunix.com.ar> Lunix S.R.L. -[ http://www.lunix.com.ar ]- GnuPG Public Key: gpg --keyserver wwwkeys.pgp.net --recv-key 0x3606F3E6

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[Twisted-Python] Problem: spawnProcess() never ending when installSignalHandlers=False
by Matt Feifarek 03 Feb '07

03 Feb '07

Hello. I'm using Twisted 1.3.0 on python2.4 on an Ubuntu-Hoary x86 Linux box. I'm using twisted and spawnProcess() with a Queue structure to chain processes that need to be called (specifically, imagemagick commands). I use the "processEnded" event/method of t.i.p.ProcessProtocol to go from one task to the next. Twisted shares a python process with a multi-threaded web-app-kit (Webware) so it has to be run in a thread. This worked well on other older versions of twisted and older versions of python; also on linux. I've tracked down the problem to be twisted itself (or my incorrect use of it) rather than my code. This example illustrates it: ------------------------------------------------- from twisted.internet import reactor from twisted.internet.protocol import ProcessProtocol class MyProt( ProcessProtocol ): def processEnded(self, reason): print "ended.", reason executable = '/bin/touch' args = ( '/tmp/foo.txt', ) args = (executable,) + tuple(args) reactor.spawnProcess( MyProt(), executable, args ) reactor.callLater( 5, reactor.stop ) #reactor.run() reactor.run(installSignalHandlers=False) ------------------------------------------------- As is, this code never runs the "processEnded()" method of MyProt(). If I change the reactor.run() parameter to leave the signal handlers on, it works. Note that I need to leave the signal handlers turned off because I can't run the reactor in the main thread; Webware needs that. I also know that the subprocess is giving up its file descriptors; I can see that if I put more print statements into MyProt(). And I know that the subprocess is working; /tmp/foo.txt is there. It seems that somehow the reactor is using signals to notice when a process has ended; this makes a certain ammount of sense intuitively, though I don't understand the nitty-gritty of processes and signals at all. And more importantly, this has worked before on other combinations of twisted/python. Is this a bug? If so, has it been fixed? If not, what should I do to detect when a spawned process is finished? Thanks very much. Twisted rocks.

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[Twisted-Python] Re: Passing extra arguments to twistd?
by gary jefferson 30 Jan '07

30 Jan '07

On 1/29/07, Christopher Armstrong <radix at twistedmatrix.com> wrote: > See the following: > > http://twistedmatrix.com/projects/core/documentation/howto/tap.html > > And *maybe* the following > > http://twistedmatrix.com/trac/ticket/1490 Very cool, I like the idea of the run plugin. Until that's ready, I think I'll settle on the next easiest thing, which is just using ENV variables to "pass in" args to each twistd process (which is easily scripted). Gary

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[Twisted-Python] Re: Passing extra arguments to twistd?
by gary jefferson 29 Jan '07

29 Jan '07

It's been a while since this was discussed on the list, but I also have a use-case where extra args to twistd would be far more useful than any other option. I'm doing a little p2p thing (which I'm sure is not all that uncommon), and of course I want to test aggregate behavior of many instances, so I instantiate 100 or so on my own box. Not being able to pass in extra args to twistd makes this obviously painful, as it adds the extra step of creating a bunch of configuration or a hoard of different tac files, whereas I can spit out a simple script that spawns instances with much more ease and elegance. Just something to chew on as you all think about adding such a feature to twistd. Gary > On Fri, 9 Jun 2006 23:03:06 +0200, Terry Jones <terry at jon.es> wrote: >> ... >>Something like allowing >> >> $ twistd -twistedopts file -- extra args here... >> >>would be nice. Or is there a better way to do this? > >.tac files _are_ configuration, so they don't _take_ configuration. You >should have so little code in your .tac file that it is neither burdensome >nor distasteful to make a copy and change bits of it to meet particular >configuration requirements. > >On the other hand, .tac files are far from the final word on configuration. >They're just the last word Twisted has put in so far ;) No doubt we'll see >something better added at some future date.

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 27 Jan '07

27 Jan '07

Bug summary ______________________ Summary for 2007-01-21 through 2007-01-28 Bugs opened: 12 Bugs closed: 6 Total open bugs: 826 (+6) |== Type Changes |== Priority Changes |== Component Changes |Defect: +4 |Highest: -1 |Conch: +2 |Enhancement: +0 |High: +0 |Core: +2 |Task: +2 |Normal: +6 |Lore: +1 |Low: +1 |Names: +1 |Pydoctor: +0 |Trial: +1 |Web: -1 New / Reopened Bugs ______________________ ===== Highest ===== [#2413] Remove direct reactor usage from twisted.conch.insults.window.TopWindow to make it more easily testable (opened by exarkun) (CLOSED, fixed) enhancement conch http://twistedmatrix.com/trac/ticket/2413 [#2414] Refactor DNSProtocol and DNSDatagramProtocol (opened by therve) enhancement names http://twistedmatrix.com/trac/ticket/2414 [#2421] Make sure that closing events are handled sanely with filetransfer (opened by jml) task conch http://twistedmatrix.com/trac/ticket/2421 ===== High ===== [#2423] ImportError on Nevow in pydoctor (opened by peterbe) (CLOSED, wontfix) defect pydoctor http://twistedmatrix.com/trac/ticket/2423 ===== Normal ===== [#2415] update/replace spawnProcess and ProcessProtocol (opened by bigdog) enhancement core http://twistedmatrix.com/trac/ticket/2415 [#2417] cannot import name page from nevow (0.9.0) (opened by kumar303) (CLOSED, wontfix) defect pydoctor http://twistedmatrix.com/trac/ticket/2417 [#2418] Lore encourages duplicate data: <title> and <h1> (opened by jerub) defect lore http://twistedmatrix.com/trac/ticket/2418 [#2419] t.i.fdesc improvements (opened by itamarst) enhancement core http://twistedmatrix.com/trac/ticket/2419 [#2420] os.kill in twisted.internet.process has no error handling (opened by itamarst) defect core http://twistedmatrix.com/trac/ticket/2420 [#2422] UnixSFTPFile os.write/os.read doesn't handle EINTR (opened by itamarst) defect conch http://twistedmatrix.com/trac/ticket/2422 [#2424] task.LoopingCall: a problem if change the system time (opened by rfg007) defect core http://twistedmatrix.com/trac/ticket/2424 ===== Low ===== [#2416] Move randomize logic from Loader to Runner (opened by jml) task trial http://twistedmatrix.com/trac/ticket/2416 Closed Bugs ______________________ ===== Highest ===== [#2413] Remove direct reactor usage from twisted.conch.insults.window.TopWindow to make it more easily testable (opened by exarkun, closed by exarkun, fixed) enhancement conch http://twistedmatrix.com/trac/ticket/2413 [#867 ] Improvements to logging timestamp (opened by itamarst, closed by therve, fixed) enhancement core http://twistedmatrix.com/trac/ticket/867 [#2211] non-script files should not have shebang lines or be executable (opened by thomasvs, closed by therve, fixed) enhancement web http://twistedmatrix.com/trac/ticket/2211 [#2323] support deque in objgrep (opened by glyph, closed by therve, fixed) enhancement core http://twistedmatrix.com/trac/ticket/2323 ===== High ===== [#2423] ImportError on Nevow in pydoctor (opened by peterbe, closed by mwh, wontfix) defect pydoctor http://twistedmatrix.com/trac/ticket/2423 ===== Normal ===== [#2417] cannot import name page from nevow (0.9.0) (opened by kumar303, closed by mwh, wontfix) defect pydoctor http://twistedmatrix.com/trac/ticket/2417

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