Mailman 3 May 2015 - Twisted

[Twisted-Python] TLS windows wincertstore
by John Aherne May 24, 2015

May 24, 2015

Well, you are right I did not want to tread on his toes. And if he was just about to make the changes it would have been offputting to find someone else making slightly different changes. Of course I am not in the same league as others making changes to twisted. But what I will do is take the patch and try it out to see where I get to. Once I see it working then I can see what to do next. I'll also try to see if Aron is looking to finish it off or is too busy. Thanks -- *John Aherne* *www.rocs.co.uk <http://www.rocs.co.uk>* 020 7223 7567

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com May 24, 2015

May 24, 2015

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[Twisted-Python] TLS windows wincertstore
by John Aherne May 24, 2015

May 24, 2015

I see that aranbierbaum has done the work on implementing wincertstore ticket 6371. For which I am very grateful. Thank you aron However, it seems to be waiting some final touches before it can land. I assume that aron is using it for his own purposes so I was wondering whether to take a copy of the patch and check it out. And if it works carry on. It would be nice to wait for a final say so on the patch but I assume aron has plenty to do at the moment. Maybe someone else has already checked it out and can give some assurance that it works. Thanks for any info. -- *John Aherne* *www.rocs.co.uk <http://www.rocs.co.uk>* 020 7223 7567

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[Twisted-Python] irc DCC file receive, error: invalid argument
by peter May 23, 2015

May 23, 2015

hi, found this code online: http://paste.pound-python.org/show/zeavfM7XjrXL2psPWxlv/ added some print statements and changed the logging to private/channel. if i send the xdccbot a file from a second irc connection (x-chat) i get this error: 2015-05-23 22:30:01,384 : Bot connection made 2015-05-23 22:30:02,448 : Bot has signed on 2015-05-23 22:30:08,760 : Bot has joined channel #lala 2015-05-23 22:30:17,750 : connection failed during DCC download. reason: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectError'>: An error occurred while connecting: 22: Invalid argument. any ideas? bot connect command: python xdccbot.py irc.freenode.net lala lalala 123 90 the bot was designed to automatically message another irc user to send some file. thats why the extra arguments.

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[Twisted-Python] Trapping exceptions in Deferred
by Mashiat Sarker Shakkhar May 22, 2015

May 22, 2015

Hi If I want to trap a certain type of exception in a deferred call, how do I specify it? For example, I see a failure like this: [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] [<twisted.python.failure.Failure <class 'OpenSSL.SSL.Error'>>] [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] Traceback (most recent call last): [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] Failure: twisted.web._newclient.ResponseNeverReceived: [<twisted.python. failure.Failure <class 'OpenSSL.SSL.Error'>>] I want to trap all such failures. I tried `failure.trap(twisted.web._newclient.ResponseNeverReceived)` but looks like that did not work. My deferred callback looks like this: Hi If I want to trap a certain type of exception in a deferred call, how do I specify it? For example, I see a failure like this: [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] [<twisted.python.failure.Failure <class 'OpenSSL.SSL.Error'>>] [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] Traceback (most recent call last): [HTTP11ClientProtocol (TLSMemoryBIOProtocol),client] Failure: twisted.web._newclient.ResponseNeverReceived: [<twisted.python. failure.Failure <class 'OpenSSL.SSL.Error'>>] I want to trap all such failures. I tried `failure.trap(twisted.web._newclient.ResponseNeverReceived)` but looks like that did not work. My deferred callback looks like this: from twisted.internet.error import TimeoutError from twisted.web._newclient import ResponseNeverReceived def log_ignore_network_errors(failure): print failure.getErrorMessage() failure.printTraceback() failure.trap(TimeoutError, ResponseNeverReceived) Apparently this does not catch all such errors. What am I doing wrong here? Regards Shakkhar

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[Twisted-Python] Need advice on how to move further with ticket 7897
by Eeshan Garg May 22, 2015

May 22, 2015

Hi! I filed a ticket (Log the log events in twisted.internet.protocol.Factory using the new logging system <https://twistedmatrix.com/trac/ticket/7897>) and I have also submitted a patch for it. However, while working on the patch, I had some concerns that I have already summarized in a ticket comment. I would really appreciate it if someone could please take a look and give me some advice as to how to move further with this ticket so that I can start working on other patches for porting to twisted.logger. :-) About a week ago, I sent a similar email to the mailing list (quoted below), but did not get a reply, so I thought I would send another one. On Wed, May 13, 2015 at 12:37 PM, Eeshan Garg <jerryguitarist(a)gmail.com> wrote: > Hello everyone! > > I am aware that I have sent an email with a similar subject line before, > but this time this involves a particular ticket (< > https://twistedmatrix.com/trac/ticket/7897>) that I have submitted for > review. The ticket is about logging the log events in > twisted.internet.protocol.Factory using the new logging system, and it is > one of the first tickets about modifying existing logging statements in the > Twisted code base to use the new system. > > While working on this ticket, I ran into some issues that I have > summarized in a comment on the same ticket < > https://twistedmatrix.com/trac/ticket/7897#comment:2> and it would mean a > lot to me if someone could take a look. > > I recall that HawkOwl had some concerns regarding moving to the new > logging system. And so I thought that it would be better if I share my > thoughts on the mailing list as well and not just on the particular ticket, > so that anybody who is interested in sharing their concerns can do so. > > Regards, > Eeshan Garg > Let me know what you think! Thanks & regards, Eeshan Garg

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[Twisted-Python] Multiple plugins in "twistd"
by Moshe Zadka May 21, 2015

May 21, 2015

Background Currently, "twistd" assumes one-run-one-plugin. It would be nice to load up multiple plug-ins in Twisted, for many reasons. These include: serving the same in-memory content via separate protocols, adding manhole to other plug-ins (so the end-deployer can add it to other things, as opposed to the original implementor, and a catch-all category of "auxiliary services". Auxiliary services are those which are not useful in and of themselves, but add value to a service which does something else of use. Examples of auxiliary services -- a logging service (that connects to some logging protocol on start-up), a metrics service (that sends statistics to a collector like statsd or riemann) or an error-sending service (to something like Sentry). Proposal tl;dr: four new tickets (codenamed SUBCOMMANDS, SERVICES, MANHOLE and PROVIDERS) and one old ticket (3538) SUBCOMMANDS: Add '+' as a special character in t.p.usage.Options. This behavior will be off by default, and controlled by an attribute on the Options instance "allowMultipleSubcommands". The attribute will only be checked when the first sub-command starts, to allow setting it based on global flags. When the option is on, '-+' will be passed as '+' to the Options instance, to allow sending plain '+' to sub-commands. Glyph thinks there's a ticket for it. I couldn't find it in "search for tickets in 'core' whose description mentionds 'command'". Unless anyone can find it, I'll open a new ticket. SERVICES (depends on SUBCOMMANDS): In twistd, set the flag aMS if '--allow-multiple-services' is given. Add to the application all services. 3538 (depends on SERVICES): If '--allow-multiple-services' is given, and '--python <.tac file>' is given, process subcommands as usual. PROVIDERS: Add a function, "providersInHierarchy(IService, IInterface) -> List[IInterface]" that returns all services in the hierarchy which provide the interface. This ticket does not depend on any other tickets. MANHOLE (depends on PROVIDERS, SERVICES): Add a built-in twistd plugin named "manhole". The plugin will expose manhole as PB/telnet with a namespace that includes {'services': providersInHierarchy(manholeService, IService)} This ticket technically could only depend on PROVIDERS, but to be useful, it also depends on SERVICES

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[Twisted-Python] Twisted 15.2.1 Prerelease Announcement
by HawkOwl May 20, 2015

May 20, 2015

Hi everyone! Twisted 15.2 has some minor regressions in the logging framework. These issues are fixed in 15.2.1, of which this is the prerelease of. You can get the tarballs and the changelog from http://twistedmatrix.com/Releases/pre/15.2.1pre1/. Please test it out, and if there's no issues, 15.2.1 will be released before the week's end. - Hawkie

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[Twisted-Python] Twisted 15.2 Release Announcement
by HawkOwl May 20, 2015

May 20, 2015

On behalf of Twisted Matrix Labs, I'm honoured to announce the release of Twisted 15.2. Bringing not only headlining features but also a lot of incremental improvements, this release has got plenty to like: - twisted.logger has landed! This is a brand-new, feature-rich logging framework. - Python 3.4 is now a supported platform for all the Py3 ported modules. - twisted.trial.unittest.TestCase's assertEqual, assertTrue, and assertFalse methods now pass through the standard library's more informative failure messages. - twisted.python.filepath.FilePath now supports Unicode (text) paths properly, and includes as{Bytes,Text}Mode methods for interacting with APIs that require a text/bytes-only FilePath. - twisted.mail.smtp.sendmail now supports ESMTP and provides a high-level interface for sending mail. - The following parts of Twisted are now ported to Python 3: - twisted.internet.process - twisted.cred.credentials - twisted.python.modules - twisted.internet.kqreactor - twisted.internet.endpoints.ProcessEndpoint - twisted.web.static - Over 50 tickets closed since 15.1. You can find the downloads at https://pypi.python.org/pypi/Twisted (or alternatively http://twistedmatrix.com/trac/wiki/Downloads). Many thanks to everyone who had a part in this release - the supporters of the Twisted Software Foundation, the developers who contributed code as well as documentation, and all the people building great things with Twisted! Twisted Regards, HawkOwl

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[Twisted-Python] HTTP and SSH over SOCKS5
by Farhan Khan May 20, 2015

May 20, 2015

Hi, I am working on a project that will require running several HTTP connections over a list of SOCKS5 proxies. I have found a lot of sample code that runs HTTP over a regular TCP socket, but none that demonstrate the functionality over SOCKS5. Is this possible in Twisted or would it have to be a protocol I would independently develop? I plan on doing something similar to SSH, so it would be nice if the SOCKS5 module simply replaced the TCP socket's send/recv functions so that I could easily port the code over to SSH. If I have to figure out SSH separately, that's okay. For starters just HTTP would be nice. Thanks! - Farhan

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