Mailman 3 April 2012 - Twisted

Re: [Twisted-Python] buildbot hosting (fwd)
by John Santos 20 Apr '12

20 Apr '12

Hi Glyph, I'm probably closer to you than Ray, but he sounds like he might have a better environment. I'm live in Belmont, 1 block from Cambridge. I have FIOS (20Mb, I think, but just a single IP and no A/C. I haven't used any dynamic DNS service, but can't imagine it would be too hard to set up. ... Another possibility would be my office in Lexington. Real (though small) computer room, A/C, limited UPS, etc. and lots of room since we just consolidated a bunch of servers. We have both FIOS and ComCast business service and (at the moment) a couple of spare IP addresses. We can firewall it off from everything internal so it would look like it was sitting on the Internet all by itself. Or we could provide DNS service and whatever for it. We use a fair amount of Twisted and one of my coworkers was recently saying we should kick in something to the Twisted project. Maybe this is a way of doing it. He's also the guy (currently) in charge of our network infrastructure, so he's the one I would have to talk it over with him, but he's on vacation this week. Also, I'm going to NYC tomorrow (mini-vacation) so I won't be able to talk to him about it until late Monday or Tuesday. It looks like you are moving in early June at the latest, I think that might work... A little later... I dropped him an email, and just heard back. It sounds fine to him, so I'm officially making the offer... Ray Cote wrote: How many IPs does this require? Is this a standard tower-type system or rack mount. If it is just a case of plugging it into the net, we can move that up to our office in the interim. However, we really don't have rack mount capability. NH, but I figure that's close enough--:} ----- Original Message ----- > From: "Glyph" <glyph(a)twistedmatrix.com> > To: "Twisted general discussion" <twisted-python(a)twistedmatrix.com> > Sent: Wednesday, April 18, 2012 4:31:02 PM > Subject: [Twisted-Python] buildbot hosting > I'm leaving my home in the Boston metro area, and moving > cross-country. This move should take at least a couple of weeks. > I currently host buildbots for many of our supported platforms; > everything with a 'bot-glyph-*' in front of it on this page: < > http://buildbot.twistedmatrix.com/buildslaves >, and also > bot-exarkun-1. So, when I move (at the latest, 6 weeks from now) > these will all go offline. > We need a volunteer who either: > 1. lives somewhere in massachusetts and can plug these in to an > ethernet port > 2. wants to re-set-up all of these buildbots on some new hosting > The somewhat less palatable option 3 is to just let much of our build > infrastructure be offline for a month. > -glyph -- John Santos Evans Griffiths & Hart, Inc. 781-861-0670 ext 539

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[Twisted-Python] defer.inlineCallbacks dosn't work with cython, deferredGenerator does.
by gelin yan 19 Apr '12

19 Apr '12

Hi All I just to let you know that defer.inlineCallbacks can't work with cython well. an example: def await(): d = defer.Deferred() reactor.callLater(3, d.callback, True) return d @defer.inlineCallbacks def host(): thing = yield await() ""do sth""" will fail to work on cython due to cython would change the function name(here I refer to host()) which lead to generator can't send back the result to the original function. However, deferredGenerator does work with cython like: @defer.deferredGenerator def host(): d = await() thing = defer.waitForDeferred(d) yield thing It is not a common case to write such codes with cython, in case of need, deferredGenerator may help. I personally hope deferredGenerator will be always there even python 2.4 support has been abandoned. deferredGenerator itself is not so elegant as inlineCallbacks, at least I don't need to struggle with a series of callback functions.. Regards gelin yan

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[Twisted-Python] (no subject)
by joel tremblet 19 Apr '12

19 Apr '12

Hello I'm starting to learn twisted, I wanted to test the example of twisted documentation: finger11 http://twistedmatrix.com/documents/current/core/howto/tutorial/intro.html Its is possible to use twistd in Windows console ? I tried - twistd -y finger11.tac but twistd is not recognize - python finger11.tac, it's run the script but stop and the prompt symbol come back How we can test this script ? Thank

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[Twisted-Python] call XMLRPC
by joel tremblet 19 Apr '12

19 Apr '12

Hi I started to learn Twisted with the O'Reilly Book Twisted Network Programming Essentials I want to do a daemon to listen on port - when a correct sentence is received, the daemon must to check by querying a server XML_RPC - if the answer from XML_RPC is 1, the HTTP answer will be OK else NOT FOUND I adapted the basic example HttpEchoProtocol.py from twisted.protocols import basic from twisted.web.xmlrpc import Proxy from twisted.internet import protocol, reactor import pdb KEYS_ADDR="192.168.0.254" KEYS_PORT=2101 # URL of the XML-RPC server OF_XMLRPC_URL="http://127.0.0.1/xmlRpc.rpc.php" # HTTP Port from which the OF client contact the service SERVICE_PORT=4080 # url sent for test: localhost:4080/?sessid=dddddd&key=1&resource=2 class HttpProtocol(basic.LineReceiver): def __init__(self): self.lines = [] self.answer = "HTTP/1.0 200 No value" self.gotRequest = False self.proxy = Proxy(OF_XMLRPC_URL) def xmlRpcResponse(self, value): self.xmlRpc = value if self.xmlRpc == 1: self.answer = "HTTP/1.0 200 OK" print "xmlRpc : ",self.xmlRpc else: self.answer = "HTTP/1.0 406 Invalid key" self.xmlRpc = 0 def xmlRpcError(self, error): self.answer = "HTTP/1.0 405 NOT FOUND" print "Error" def lineReceived(self, line): self.lines.append(line) if not line and not self.gotRequest: text = self.lines[0] startText = text.find("sessid") if startText>0 : endText = text.find("HTTP") text=text[startText:endText] data = text.split("&") sessionId = data[0][data[0].find("=")+1:] keyId = int(data[1][data[1].find("=")+1:]) resourceId = int(data[2][data[2].find("=")+1:]) self.proxy.callRemote('checkCommand', sessionId, keyId).addCallbacks(self.xmlRpcResponse, self.xmlRpcError) self.sendResponse() self.gotRequest = True def sendResponse(self): responseBody = self.answer self.sendLine(self.answer) self.sendLine("Content-Type: text/plain") self.sendLine("Content-Length: %i" % len(responseBody)) self.sendLine("") self.transport.write(responseBody) self.transport.loseConnection() factory = protocol.ServerFactory() factory.protocol = HttpProtocol reactor.listenTCP(SERVICE_PORT, factory) reactor.run() XML_RPC answer is correctly received ("xmlRpc : 1") but the HTTP answer is always "HTTP/1.0 200 No value" (first initialization) I tried a other example, based on requesthandler,py from twisted.web.xmlrpc import Proxy from twisted.web import http from twisted.web.xmlrpc import Proxy from twisted.internet import reactor import pdb # HTTP Port from which the OF client contact OpenKeys service SERVICE_PORT=4080 # URL of the XML-RPC server OF_XMLRPC_URL="http://127.0.0.1/openkeys.rpc.php" class MyRequestHandler(http.Request): xmlRpc = 0 def xmlRpcResponse(self, value): self.xmlRpc = value print repr(value) if self.xmlRpc == 1: self.setResponseCode(http.OK) self.write("<h1>OK</h1>") else: self.setResponseCode(http.NOT_ALLOWED) self.write("<h1>Invalid key</h1>.") self.xmlRpc = 0 self.finish() def xmlRpcError(self, error): print 'error', error self.setResponseCode(http.NOT_FOUND) self.write("<h1>Not Found</h1>") self.xmlRpc = 0 self.finish() def process(self): self.setHeader('Content-Type', 'text/html') data = self.args if 'sessid' in data: sessionId = data['sessid'][0] keyId = data["key"][0] resourceId = data["resource"][0] print "session = ", sessionId print "key = ", keyId print "resource = ", resourceId proxy.callRemote('checkCommand', sessionId, keyId).addCallbacks(self.xmlRpcResponse, self.xmlRpcError) else: print "data = ", data self.setResponseCode(http.NOT_FOUND) self.write("<h1>Not Found</h1>Sorry, no such page.") self.finish() class MyHttp(http.HTTPChannel): requestFactory = MyRequestHandler class MyHttpFactory(http.HTTPFactory): protocol = MyHttp proxy = Proxy(OF_XMLRPC_URL) reactor.listenTCP(SERVICE_PORT, MyHttpFactory()) reactor.run() But in this case an error occur error [Failure instance: Traceback: <class 'xmlrpclib.Fault'>: <Fault -32602: 's erver error. invalid method parameters'> C:\python27\lib\site-packages\twisted\internet\posixbase.py:263:_disconnectSelec table C:\python27\lib\site-packages\twisted\internet\tcp.py:433:connectionLost C:\python27\lib\site-packages\twisted\internet\tcp.py:277:connectionLost C:\python27\lib\site-packages\twisted\web\xmlrpc.py:373:connectionLost --- <exception caught here> --- C:\python27\lib\site-packages\twisted\web\xmlrpc.py:444:parseResponse C:\python27\lib\xmlrpclib.py:1137:loads C:\python27\lib\xmlrpclib.py:793:close ] I try to declare the Proxy(OF_XMLRPC_URL) differently, without success Where is my mistake .... Thanks Bingo

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[Twisted-Python] We need more mentors!
by Itamar Turner-Trauring 16 Apr '12

16 Apr '12

We have a pile of enthusiastic Google Summer of Code applicants, and not enough mentors at the moment. Anyone interested in mentoring a student or two over the summer? If so, email me ASAP. Thanks!

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 15 Apr '12

15 Apr '12

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[Twisted-Python] [ANN] Announcing MV3D 0.75!
by Michael Handverger 15 Apr '12

15 Apr '12

We are very happy to announce the release of version 0.75 of MV3D! This was mainly a bug-fixing release with more than 65 bugs squashed. Also, in this release, MV3D gained support for Linux with the Ogre3D renderer along with Mac OS X with the Panda3D renderer. This means that MV3D's client, server, and tools are available on Windows, Linux, and OS X! With bug-fixes across the whole platform, this is also the most stable release of MV3D to date. MV3D is an open source multiplayer game and virtual world framework written in Python using Twisted for networking. It encompasses a scalable server with dynamic load balancing, a robust set of content creation tools, and an extensible 3D client application. MV3D provides the foundation to build anything from 3D chat rooms to full MMORPGs with the goal of letting you concentrate on creating a unique virtual world instead of the infrastructure to support it. For more information on MV3D and this or future releases, please visit the website at http://www.mv3d.com . The full release notes for version 0.75 are available online at this URL: http://www.mv3d.com/trac/browser/tags/mv3d-0.75/release-notes.txt . For further inquiries, feel free to stop by our IRC channel on irc.freenode.net #MV3D. Here are some screenshots of MV3D running on OS X and Linux: http://www.mv3d.com/trac/screenshots/51 http://www.mv3d.com/trac/screenshots/52 The next release is 0.80 which is set to include features aimed at improving MV3D's usability as a platform for traditional MMORPGs such as instancing along with increasing tool usability and functionality. Enjoy, Mike

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[Twisted-Python] Coverage summary with trial
by Øystein S. Haaland 14 Apr '12

14 Apr '12

Hi all, I would like to collect coverage statistic for my twisted code with trial and was wondering how to achieve this. I run something like: $ trial --coverage testdir/*_test.py all tests are green and i can see coverage files in _trial_temp/coverage/. After looking around a bit i learn that the python trace module is used under the hood and my assumption then is that i must use similar commands as those that are shown here: http://docs.python.org/library/trace.html I had to look at the source code to find this out. It would be nice if it was mentioned in the documentation somewhere. So i try to construct a command like this: python -m trace --summary --report --coverdir _trial_temp/coverage/ But it needs --file which seems not to be enabled by trial. I then make some changes in the trial script: --- trial.py.orig 2012-03-30 06:32:08.627758872 +0200 +++ trial.py 2012-04-14 04:50:05.416382063 +0200 @@ -162,7 +162,8 @@ directory specified by the I{trial-temp} option. """ import trace - self.tracer = trace.Trace(count=1, trace=0) + countfile="countfile.txt" + self.tracer = trace.Trace(count=1, trace=0, infile=countfile, outfile=countfile) sys.settrace(self.tracer.globaltrace) and i can finally see a summary if i remember to add the --missing option: python -m trace --report --summary --missing --file countfile.txt -- coverdir=_trial_temp/coverage/ I assume i am missing something obvious, because it seems strange that one would have to change the trial script to achieve this. How do other people create such summaries? --- Øystein

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[Twisted-Python] Twisted gets a logo on the DreamHost Github page :-)
by Duncan McGreggor 13 Apr '12

13 Apr '12

Just thought I'd share the coolness: http://dreamhost.github.com/ DreamHost is now using Twisted internally for projects and tooling... d

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Re: [Twisted-Python] txws.py websocket and Python 2.4
by matusis＠yahoo.com 13 Apr '12

13 Apr '12

Maybe you could commit that? try: #python 2.6+ from hashlib import md5, sha1 except ImportError: import md5 from sha import sha as sha1 protocol = "self.isSecure() and wss" or "ws" That would help to people with 2.4! From: Corbin Simpson [mailto:mostawesomedude@gmail.com] Sent: Thursday, April 12, 2012 3:18 PM To: matusis(a)yahoo.com Subject: Re: txws.py websocket and Python 2.4 Yeah, definitely. On Apr 12, 2012 3:16 PM, <matusis(a)yahoo.com> wrote: I do not quite know the most recent status of txws.py, whether it is being merged to Twisted or not. But I noticed that it has it has two incompatibilities with Python 2.4: 1. from hashlib import md5, sha1 2. protocol = "wss" if self.isSecure() else "ws" After fixing those, it works on 2.4. Would it make sense to make that change on github?

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