Mailman 3 April 2008 - Twisted

[Twisted-Python] Twisted and ZSI
by Grzesiek Slusarek April 15, 2008

April 15, 2008

Hello. Is there any examples, manuals or tutorials how to use ZSI webservice under Twisted?? Thanks for anyone who points me in the right direction. I need to write ZSI webservice which can serve about 30 parallel connection and as far I know only under Twisted, ZSI can do that. Thanks for any help Grzegorz Ślusarek ---------------------------------------------------- Najpiękniejszy głos kobiecego jazzu - STACEY KENT 16.05 20:00 Warszawa, 17.05 20:00 Poznań bilety: Ticketonline, Ticketpro,… [View More]

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[Twisted-Python] Founding Sponsors Window Closes May 15th
by Duncan McGreggor April 15, 2008

April 15, 2008

Current Founding Sponsors: You guys rock! Thanks! Potential Founding sponsors: You too can rock, but you only have a limited window of opportunity in which to do so :-) We were going to set the deadline to April 30th, but we've been so busy working with those of you that have been sponsoring that we didn't get the chance (just look at those awesome logos on the front page!) to send out an email. We wanted to provide people and companies with a 30 day notice, so May 15th it is. Thanks again, … [View More]

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[Twisted-Python] twistd plugin documentation
by Jon Parise April 15, 2008

April 15, 2008

I was just reading through the "Writing a twistd Plugin"[1] documentation and ran into some confusion. If you follow the suggested directory structure (e.g. MyProject/myproject/__init__.py) and name the plugin file twisted/plugins/myproject.py, any attempt to "import myproject" from within the plugin file will import the plugin module and not the myproject module. I see that Twisted itself prefixes its plugin files (e.g. twisted_web.py), perhaps to get around this problem. So does that … [View More]

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[Twisted-Python] about smtp client auth problem.
by Chris April 15, 2008

April 15, 2008

Hi, I am trying to use twisted to implement a script to send the email,I got some problem.here is the script: #################### import StringIO from twisted.application import service application = service.Application("SMTP Client Tutorial") from twisted.application import internet from twisted.python import log from twisted.internet import defer, reactor from twisted.mail import smtp mailFrom = "chris.yan(a)xxxx.com" mailTo = ["chrisyan81(a)gmail.com",] mail = StringIO.StringIO("""Date: … [View More]Fri, 3 Nov 2006 230:14:39 +0000 From: chris.yan(a)xxxx.com To: chrisyan81(a)gmail.com Subject: Tutorate! Hello, how are you, goodbye. """) whenDone = defer.Deferred() def send(r): print "message sent:", r whenDone.addCallbacks(send, log.err) def done(d): from twisted.internet import reactor reactor.callLater(1, reactor.stop) whenDone.addBoth(done) sender = smtp.ESMTPSenderFactory( 'chris.yan', 'xxxxxx', mailFrom, mailTo, mail, whenDone, requireTransportSecurity=False ) smtpClientService = internet.TCPClient('smtp.xxxx.com', 25, sender) smtpClientService.setServiceParent(application) in fact the script from http://twistedmatrix.com/pipermail/twisted-python/2006-November/014299.html… I didn't modify anything except my own information.Because the smtp server doesn't support SSL,so I use requireTransportSecurity=False. here is the output: 2008/04/15 17:56 +0800 [-] Log opened. 2008/04/15 17:56 +0800 [-] twistd 2.5.0 (C:\Python25\python.exe 2.5.2) starting up 2008/04/15 17:56 +0800 [-] reactor class: <class 'twisted.internet.selectreactor.SelectReactor'> 2008/04/15 17:56 +0800 [-] Loading smtpclient_tls_001.py... 2008/04/15 17:56 +0800 [-] Loaded. 2008/04/15 17:56 +0800 [-] Starting factory <twisted.mail.smtp.ESMTPSenderFactory instance at 0x01347878> 2008/04/15 17:56 +0800 [ESMTPSender,client] Unhandled Error Traceback (most recent call last): Failure: twisted.mail.smtp.AUTHRequiredError: 502 Server does not support Client Authentication schemes [CRAM-MD 5, LOGIN, PLAIN] <<< 250-AUTH <<< 250-AUTH=PLAIN LOGIN LOGIN <<< 250-XXXXXXXA <<< 250 XXXB 2008/04/15 17:56 +0800 [ESMTPSender,client] Stopping factory <twisted.mail.smtp.ESMTPSenderFactory instance at 0x0134787 8> 2008/04/15 17:56 +0800 [-] Main loop terminated. 2008/04/15 17:56 +0800 [-] Server Shut Down. but when I use another script which uses smtplib: SMTP_server='smtp.xxxx.com' SMTP_user='chris.yan' SMTP_passwd='xxxxx' def send_email(Subject,From,To,Attachment,Body,SMTP_server,SMTP_user,SMTP_passwd): msg = MIMEMultipart() msg['Subject'] = Subject msg['From'] = From msg['To'] = To txt = MIMEText(Body,_charset='utf-8') msg.attach(txt) filename = Attachment if not os.path.isfile(filename): print 'Can not find file %s,please check!' % filename sys.exit(1) fp = open(filename,'rb') ctype,encoding = mimetypes.guess_type(filename) if ctype is None or encoding is not None: ctype = 'application/octet-stream' maintype,subtype = ctype.split('/',1) m = MIMEBase(maintype,subtype) m.set_payload(fp.read()) fp.close() Encoders.encode_base64(m) m.add_header('Content-disposition','attachment',filename=filename) msg.attach(m) s = smtplib.SMTP(SMTP_server) s.debuglevel = 5 s.ehlo() s.esmtp_features["auth"] = "LOGIN" s.login(SMTP_user,SMTP_passwd) s.sendmail(From,To,msg.as_string()) s.close() I can get the output: send: 'ehlo chris.shuobaotang.com\r\n' reply: '250-mail.saybot.com Hello chris.shuobaotang.com [218.79.132.2]\r\n' reply: '250-SIZE 52428800\r\n' reply: '250-PIPELINING\r\n' reply: '250-AUTH \r\n' reply: '250-AUTH=PLAIN LOGIN LOGIN\r\n' reply: '250-XXXXXXXA\r\n' reply: '250 XXXB\r\n' reply: retcode (250); Msg: mail.saybot.com Hello chris.shuobaotang.com [218.79.132.2] SIZE 52428800 PIPELINING AUTH AUTH=PLAIN LOGIN LOGIN XXXXXXXA XXXB send: 'AUTH LOGIN Y2hyaXMueWFu\r\n' reply: '334 UGFzc3dvcmQ6\r\n' reply: retcode (334); Msg: UGFzc3dvcmQ6 send: 'd3JpbHV5Yg==\r\n' reply: '235 Authentication succeeded\r\n' reply: retcode (235); Msg: Authentication succeeded send: 'mail FROM:<chris.yan(a)saybot.com> size=668\r\n' reply: '250 OK\r\n' reply: retcode (250); Msg: OK send: 'rcpt TO:<chrisyan81(a)gmail.com>\r\n' reply: '250 Accepted\r\n' reply: retcode (250); Msg: Accepted send: 'data\r\n' reply: '354 Enter message, ending with "." on a line by itself\r\n' reply: retcode (354); Msg: Enter message, ending with "." on a line by itself data: (354, 'Enter message, ending with "." on a line by itself') send: 'Content-Type: multipart/mixed; boundary="===============1595669237=="\r\nMIME-Version: 1.0\r\nSubject: scores fro m saybot rater.\r\nFrom: chris.yan(a)saybot.com\r\nTo: chrisyan81(a)gmail.com\r\n\r\n--===============1595669237==\r\nConten t-Type: text/plain; charset="utf-8"\r\nMIME-Version: 1.0\r\nContent-Transfer-Encoding: base64\r\n\r\nSGksCiAgICBUaGlzIGl zIHRoZSBzY29yZXMgd2hpY2ggZ2VuZXJhdGVkIGJ5IHNheWJvdCByYXRl\r\ncixwbGVhc2UgY2hlY2sgdGhlIGF0dGFjaG1lbnQhCgpCZXN0UmVnYXJkCkN ocmlzCg==\r\n\r\n--===============1595669237==\r\nContent-Type: text/plain\r\nMIME-Version: 1.0\r\nContent-Transfer-Enco ding: base64\r\nContent-disposition: attachment; filename="scores.txt"\r\n\r\nMTM4MTMwMzE0NzUg17/Hvw0K\r\n\r\n--======== =======1595669237==--\r\n.\r\n' reply: '250 OK id=1Jlhvl-00071w-1f\r\n' reply: retcode (250); Msg: OK id=1Jlhvl-00071w-1f data: (250, 'OK id=1Jlhvl-00071w-1f') Done. some guy said,this script force to use the LOGIN auth,because something wrong with the server,is it true?I don't know very much about the mail server,does any one can tell me if I can make my twisted script work?I really like to implement a twisted one. BestWishes Chris [View Less]

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[Twisted-Python] shared list in factory, mutexes?
by Gabriel Rossetti April 15, 2008

April 15, 2008

Hello, I have to have a shared list in a server's factory to keep client registration info. I had been using python's mutex class to make sure only one registration at a time can be done. I just realized that this is blocking and that's a no-no with twisted. My question is what would be a better way of doing this? Gabriel

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[Twisted-Python] twisted/persisted/dirdbm -- is this async-safe?
by Andy Fundinger April 14, 2008

April 14, 2008

I'm developing a pretty general storage system as part of a larger twisted project, basically I just need dbm file type storage for now, until I get a better grip on my actual needs. I'm expecting to use this as a test of Amazon SimpleDB, but the polarrose.amazon module apparently needs python 2.5 which my server doesn't have yet. So I need a somewhat interim solution and went looking for it, I was thinking twisted.persisted.dirdbm, but when I went to hook it up I noticed no deffereds at all. … [View More]

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[Twisted-Python] HTTPS and subjectAltName
by Roland Hedberg April 14, 2008

April 14, 2008

Hi! I'm building a Twisted based system where the basic components are nodes. Information flows between these nodes and one of the transport protocols that can be used are HTTP/HTTPS. Now, both servers and clients has certificates and hostname verification is a must. Because of that I'd love to be able to access the subjectAltName extension. I started with pyOpenSSL and I was very happy with that until I realized that there is no support for the subjectAltName (SAN) extension in … [View More]

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[Twisted-Python] Is psycopg or pygresql better with twisted.enterprise?
by Nathan April 14, 2008

April 14, 2008

Is there any noticeable difference between psycopg (version 2) or pygresql (version 3.8.1) when used with twisted.enterprise to connect to postgresql? Pygresql hasn't been updated since June 2006, but maybe that's just because it's stable (?) -- I haven't used it at all, ever. Psycopg2 has had more recent releases, but I've experience some bugs with it in (non-twisted) threaded code and the web site has been down for weeks (months?), so I thought it wise to explore alternatives... Or is … [View More]

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[Twisted-Python] Performance issues of twisted.
by Peter Cai April 14, 2008

April 14, 2008

Hi all! I am preparing to write a server application (you may think of it as an online game server) with twisted, but I am worrying about it's performance and how to do it correctly. For example.. 1. UDP or TCP，which should I choose to gain higher performance? 2. Should I catch data in memory instead of write it to db immediately? 3. Could I make it run on cluster if cache data in memory ―― I think it might be quit hard to exchange data between instances of the server if I cache data in … [View More]

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[Twisted-Python] Epoll Memory Issues
by Matthew Glubb April 13, 2008

April 13, 2008

Hi All, First of all, I'd like to offer a belated thanks for Twisted and congratulations on releasing version 8. I posted about a year ago about memory issues I was having with Twisted and the epoll reactor. I have recently put a simple proxy server based on Twisted in to production and have been running a live test on a single host for between 300 and 400 concurrent users. The server gradually consumes memory to a point where I have to start thinking about the experience of my … [View More]

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