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.
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|_____| |_____ | | | |
@ t w i s t e d m a t r i x . c o m
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
> if __name__ == '__main__':
> from twisted.internet import reactor
> r = Example()
> reactor.listenTCP(7080, server.Site(r))
> I want to be able to get the address of the client that calls the
> method can anyone help me with this?
This solution didn't work because 'transport' isn't a property of the
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?
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
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 )
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.
I have a couple of services. The second is dependent on the first being
fully initialised before the second gets set up.
I thought that the order of Service startup was typically handled by
organising services in a hierarchy, and that the startup of the
hierarchy understood deferreds. I was wrong - service.Application is a
MultiService and only understands deferreds in stopService.
There's a DependentMultiService class in twisted.internet.app but that
entire module has been deprecated.
Is there a reason why the MultiService does not support deferreds in
Is there a reason that DependentMultiService was not moved across to the
In other words, what is the recommended way of starting services in the
correct order, including waiting for them to get initialised fully,
/ \__ Matt Goodall, Pollenation Internet Ltd
\__/ \ w: http://www.pollenation.net
__/ \__/ e: matt(a)pollenation.net
/ \__/ \ t: +44 (0)113 2252500
/ \ Any views expressed are my own and do not necessarily
\__/ reflect the views of my employer.
wxreactor in Twisted 2.1 uses threadedselectreactor. This means that wx
apps ought to use wxreactor, not TSR directly; there are some issues
with vanilla TSR wx integration that are also present in wxreactor, but
will be fixed in future versions of wxreactor.
What's broken (there may be more):
1. reactor shutdown events aren't handled correctly (e.g. Deferred
returned from during-shutdown event).
2. Signal handling for e.g. Ctrl-C is caught by wx, not twisted.
In order to get these fixed I need your help. I have a version of
wxreactor that *probably* fixes these in Subversion trunk. You can try
it out by running doc/core/examples/wxdemo.py. Hitting Ctrl-C, choosing
Exit from the menu or closing the menu all should have the same effect -
the application logs "shutting down in 0.3 seconds...", "2", "1", "0"
then exits. In addition, "Hello world" should continue to be printed
while the dialog box is open or you are holding down a menu.
Please try this out, and report success or failure at
<http://twistedmatrix.com/bugs/issue1235>. I'm especially interested to
hear if it works on Windows or Mac OS X. Please include your OS and
version of wxPython/wxWidgets when submitting reports.
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Twisted is very extensive in protocol support, managing smtp, pop3 and
imap4, for example. I was wondering if there is any LMTP server project
out there. It should be fairly simple, since LMTP is very very similar
to usual SMTP. I need to use LMTP for a local project, and I was
wondering if tiwsted could be used to fill this gap.
Jesus Cea Avion _/_/ _/_/_/ _/_/_/
jcea(a)argo.es http://www.argo.es/~jcea/ _/_/ _/_/ _/_/ _/_/ _/_/
jabber / xmpp:email@example.com _/_/ _/_/ _/_/_/_/_/
_/_/ _/_/ _/_/ _/_/ _/_/
"Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/
"My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/
"El amor es poner tu felicidad en la felicidad de otro" - Leibniz
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I reckon it's about time for another AU sprint.
The likely locations are Sydney or Melbourne, and the likely dates are
any weekend in May, the first weekend of June or the last weekend of
Topics are as yet undecided. I intend to remove wait() entirely.
I tentatively suggest that the Sprint be:
- In Sydney
- June 24-25
Can you make it? Reply today!
I'm trying to setup a ProducerConsumerProxy between a
protocols.basic.FileSender producer and a TCP Protocol transport.
I have the following code:
fileObj = file('test.txt','r')
proxy = protocols.pcp.ProducerConsumerProxy(self.transport)
producer = protocols.basic.FileSender()
dd = producer.beginFileTransfer(fileObj, proxy)
The problem is that only 16KB of data are transfered and then the
transfer pauses. Also if I use BasicProducerConsumerProxy no data at
all gets transfered. I think that the proxy doesn't call resumeProducing()
the FileSender producer and thats why the transfer seems to halt.
Any suggestions ?
Just out of curiosity, I wondered where things stood with newpb. I'm
eagerly awaiting its arrival; apologies if there was a list
announcement I missed. I got an overview from Brian a few months
back, and it got me all pumped ;-)...
Is there any documentation available yet? Even just some example code
would be nice; I'd like to get into newpb, even if it's in a state of
flux. Unfortunately, I can't seem to find the time to lurk in IRC
that much, so i kind of need some sort of asynchronous instruction...
I've certainly got no problems with reading in-code docs, but I would
definitely appreciate a little bit of a starter howto or something...