Mailman 3 October 2018 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince 03 Mar '22

03 Mar '22

I am plannig to upgrade twisted's buildbot in the near future. In preperation for that, I am going to take down the production buildbot on Tuesday, June 26, around 1600 UTC[1]. During that time, the result of any builds done will be lost. Thus, I'd ask that people avoid committing to trunk during that time. I will send a reminder before I take down the buildbot both here, and on #twisted and #twisted-dev. Tom [1] http://timeanddate.com/worldclock/meetingtime.html?iso=20120626&p1=80&p2=22…

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[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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01 May '19

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[Twisted-Python] twisted.web with dynamic + static content
by Jeff Grimmett 27 Nov '18

27 Nov '18

I'm sure I'm overlooking something obvious here but I just can't get my head around it. Here's the setup: twisted.web server that generates dynamic content. Child that serves up static content, e.g. css and favoicon. However, the static content isn't making it. Instead, any hit to localhost/static actually yields up a copy of / again. Here's the server code import sys from twisted.internet import reactor, endpoints from twisted.web import server from twisted.web.resource import Resource from twisted.web.static import File sys.path.append('lib') content = """ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <link rel="stylesheet" href="/static/test.css" type="text/css" /> </head> <body> <span class='twistedTest'>This</span> is a test </body> </html> """ class tServer(Resource): isLeaf = True def render_GET(self, request): return bytes(content, "utf-8") if __name__ == "__main__": root = tServer() root.putChild(b"static", File("static")) site = server.Site(root) endpoint = endpoints.TCP4ServerEndpoint(reactor, 8080) endpoint.listen(site) reactor.run() print("Shutting down!") It's run with the command 'python tserver.py'. The expectation is that what is inside the custom <span> will be red. In the same dir as the script is a subdir 'static' with the css file inside it. If I replace 'root' with root = Resource() then / doesn't serve up anything, but /static is a directory listing of the static directory. The dynamic server is basically a copy of several tutorials cooked down to something that I could use to demonstrate the problem. What am I missing here? /headscratch Regards, Jeff

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 28 Oct '18

28 Oct '18

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[Twisted-Python] Etiquette of tagging people for reviews?
by Wim Lewis 24 Oct '18

24 Oct '18

Every project seems to have its own norms around this. When I have some code in a reviewable state, I will sometimes look for someone who has recently worked on that piece of code or similar features and request a review from them, just to get the ball rolling. Is this a reasonable thing to do with Twisted? Or should I just let people check the review queue when they have time for reviewing?

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[Twisted-Python] Twisted 18.9.0 Release Announcement
by Amber Brown 23 Oct '18

23 Oct '18

On behalf of Twisted Matrix Laboratories, I am honoured to announce the release of Twisted 18.9! The highlights of this release are: - Support for Python 3.7! - Better support for Unicode handling in logging tracebacks in Python 2 - trial -j now reports tracebacks on test failures on Python 3. - twisted.internet._sslverify.ClientTLSOptions no longer raises IDNAError when given an IPv6 address as a hostname in a HTTPS URL. - HTTP/2 server connections will no longer time out active downloads that take too long. For more information, check the NEWS file (link provided below). You can find the downloads at <https://pypi.python.org/pypi/Twisted> (or alternatively <http://twistedmatrix.com/trac/wiki/Downloads>). The NEWS file is also available at <https://github.com/twisted/twisted/blob/twisted-18.9.0/NEWS>. 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, Amber Brown (HawkOwl)

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 21 Oct '18

21 Oct '18

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[Twisted-Python] doPoll timeout problems
by Scott, Barry 18 Oct '18

18 Oct '18

We are seeing a problem with poll being called very often and think that the problem is in the timeout calculation. The code look like this: def doPoll(self, timeout): """Poll the poller for new events.""" if timeout is not None: timeout = int(timeout * 1000) # convert seconds to milliseconds What this does is round down the timeout. We are experimenting with this: def doPoll(self, timeout): """Poll the poller for new events.""" if timeout is not None: timeout = int(math.ceil(timeout * 1000)) # convert seconds to milliseconds This rounds up the timeout. With this we see that the poll() is called far less often. The reason being that if the timeout is 0.0009 the code uses 0ms timeout. And if your CPU is fast enough it will do many 0ms timeout calls to poll before the timer is removed from the _pendingTimedCalls list. And if the timeout is 0.0019 the time is 1ms and when the _pendingTimedCalls is check its first element has not expired yet. So keep doing calls with 1ms. Typically we see that the first element in the _pendingTimedCalls is a call to _updateLogDateTime in HTTPFactory. We use a HTTPFactory many times and also NevowSite. That causes a callLater for _updateLogDateTime for each factory. These _updateLogDateTime call seems to be a lot of complexity for no benefit. After all time.time() is very fast on Linux, why cache the log time strings? Especially when in our app we never write an access log file. We are working on stubbing out all that code for our app to bring our performance back up compared to old twisted 2.0. Barry

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[Twisted-Python] State of Names / DNS server
by Evilham 16 Oct '18

16 Oct '18

Dear Twisted people, I've been taking a good look at twisted.names as a sever after checking twisted-infra/braid/services/names and how the zones are saved. Basically, I wonder what the state-of-afairs of running DNS with twisted is. By checking the code I see a couple things like: * That zone transfers are enabled by default and open to any host and only subclassing would help override that (it is the case on twistedmatrix.com btw). * Comments saying how some things are not RFC-compliant, but not how. * That DNSSEC is not implemented Besides the 1st point which could be a ticket (should I open it?), the other points appear to be somewhat documented in the open tickets: https://twistedmatrix.com/trac/query?status=assigned&status=new&status=reop… But I wonder if there is something like a roadmap that I haven't seen or a very specific way to start helping on this front. Basically, I'd hate to start working on sth and it overlapping with someone else's work ;). I checked a couple tickets, and see that there is definitely a need for some cleanup, e.g. this one appears to be ready for closing https://twistedmatrix.com/trac/ticket/5048 as it is marked as duplicate of a closed ticket. Also, I recall this PR from early summer, which appears to have been OK'd but is blocked by some failure in appveyor + buildbot: https://github.com/twisted/twisted/pull/954 Thank you for any pointers, and thank you for Twisted! -- Evilham

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Twisted October 2018