Mailman 3 April 2002 - Twisted

[Twisted-Python] Re: [Twisted-commits] fixed POST in cgi under distribed web servers
by Itamar Shtull-Trauring April 19, 2002

April 19, 2002

I patched /twisted/Twisted/ on zaibach with this fix as well, so zaibach is now running 0.17.3 + this patch (it was the only way I could test if I solved it - we need a CGI accepttest that uses POST, where the web server is running over distrib.)

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[Twisted-Python] Issues in new checkin from Donovan
by Itamar Shtull-Trauring April 19, 2002

April 19, 2002

First of all - good work! 1. Use of unicode literals and XML in domtemplate.py - it won't run in 1.5.2. When are we gonna drop 1.5.2 support? It's a pretty neat templating system, actually, for certain uses. I still think ZPT is better though. 2. No example blog.html for the blog, so users won't know how to make templates. The docs in domtemplate make it pretty obvious how to use though. How do I add posts to a blog - not implemented yet? I think the blog code should not be part of Twisted core. Start a new CVS respository and make it a plugin is my suggestion.

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[Twisted-Python] bugs, bugs. (http)
by Christopher Armstrong April 19, 2002

April 19, 2002

Didn't notice these till after Twisted 0.17.2 was released (oh, btw, Twisted 0.17.2 is released: http://twistedmatrix.com/): * when I wget a file off of my web server, it seems to hang after completion. Issue with persistent connection support? * Static files are acting very sporadically. It looks like more HTTP protocol issues. I *sometimes* get this (double-)traceback for them: [Broker,0,unix] <GET /users/carmstro.twistd/files/944.png HTTP/1.1> [Broker,0,unix] Peer Will Receive PB Traceback: [Broker,0,unix] Traceback (most recent call last): [Broker,0,unix] File "/twisted/Twisted/twisted/spread/pb.py", line 689, in _recvMessage [Broker,0,unix] netResult = object.remoteMessageReceived(self, message, netArgs, netKw) [Broker,0,unix] File "/twisted/Twisted/twisted/spread/flavors.py", line 108, in remoteMessageReceived [Broker,0,unix] state = apply(method, args, kw) [Broker,0,unix] File "/twisted/Twisted/twisted/web/distrib.py", line 45, in remote_resumeProducing [Broker,0,unix] self.producer.resumeProducing() [Broker,0,unix] File "/twisted/Twisted/twisted/web/static.py", line 308, in resumeProducing [Broker,0,unix] self.request.unregisterProducer() [Broker,0,unix] File "/twisted/Twisted/twisted/protocols/http.py", line 412, in unregisterProducer [Broker,0,unix] self.transport.unregisterProducer() [Broker,0,unix] exceptions.AttributeError: Request instance has no attribute 'transport' [Broker,0,unix] Peer Will Receive PB Traceback: [Broker,0,unix] Traceback (most recent call last): [Broker,0,unix] File "/twisted/Twisted/twisted/spread/pb.py", line 689, in _recvMessage [Broker,0,unix] netResult = object.remoteMessageReceived(self, message, netArgs, netKw) [Broker,0,unix] File "/twisted/Twisted/twisted/spread/flavors.py", line 108, in remoteMessageReceived [Broker,0,unix] state = apply(method, args, kw) [Broker,0,unix] File "/twisted/Twisted/twisted/web/distrib.py", line 45, in remote_resumeProducing [Broker,0,unix] self.producer.resumeProducing() [Broker,0,unix] File "/twisted/Twisted/twisted/web/static.py", line 308, in resumeProducing [Broker,0,unix] self.request.unregisterProducer() [Broker,0,unix] File "/twisted/Twisted/twisted/protocols/http.py", line 412, in unregisterProducer [Broker,0,unix] self.transport.unregisterProducer() [Broker,0,unix] exceptions.AttributeError: Request instance has no attribute 'transport' -- Chris Armstrong << radix(a)twistedmatrix.com >> http://twistedmatrix.com/users/carmstro.twistd/

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[Twisted-Python] Webcred and guard
by Itamar Shtull-Trauring April 18, 2002

April 18, 2002

There seems to be duplicate code in twisted.web.guard and twisted.web.webcred. What gives? What is webcred for? What's the difference?

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[Twisted-Python] ANN: TwistedJava 0.5
by Itamar Shtull-Trauring April 16, 2002

April 16, 2002

I just released v0.5 of TwistedJava, implementing Perspective Broker (twisted.spread) for Java. It now passes the interop tests with 0.17.x in CVS, has improved APIs and less bugs. Get it at http://itamarst.org/software/

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[Twisted-Python] Re: [Twisted-commits] OK, maybe distributed servers work again with files...
by Christopher Armstrong April 16, 2002

April 16, 2002

On Mon, 2002-04-15 at 20:21, glyph CVS wrote: > Modified files: > Twisted/twisted/web/distrib.py 1.33 1.34 > > Log message: > OK, maybe distributed servers work again with files... HOORAY! Thanks a lot. If everything's OK, I'll get onto releasing 0.17.2. Anyone have any objections? Anyway, real purpose of this message -- I noticed that this fix breaks backwards-compatibility with old servers again (at least when the --user server is running 0.17.1 and --personal is running CVS; I assume it's also broken for the opposite). This is really starting to bug me, because all of our users on Zaibach have to restart their servers for their web sites to work after an upgrade. Of course, I don't care for _my_ server, but the big one is snibril's Moin server. #1. Would it be possible to make future changes to distributed web without breaking old servers, if we try hard enough? (I doubt it) #2. Can we make servers easier to rebuild in-place so we don't actually have to restart them? (I doubt it) #3. Can we set up a system on zaibach to have a central script that runs or restarts all of the users' servers? I think just going through the list of user web-servers and 'su <user> -c <restart command>' should do the trick. If #3 never comes about, then I'd like to get snibril's permission to restart his server when I make a release. :-) -- Chris Armstrong << radix(a)twistedmatrix.com >> http://twistedmatrix.com/users/carmstro.twistd/

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[Twisted-Python] Banana greeting and profiles
by Itamar Shtull-Trauring April 15, 2002

April 15, 2002

In the new banana, it starts out by sending a message with a list of profiles it supports: ["pb", "none"] Now, the thing is, the "pb" profile doesn't imply you're running the PB protocol, it just means that you're defining some extra banana types that are used by the PB protocol, but for all you know this server may be running a different protocol. This is especially true when you get this list: ["none"] So, you know it's using banana - but what protocol is running on *top* of banana? As I'm seeing from HTTP, telling the client what protocol you run is rather important. So, this implies that maybe the banana greeting should also include the protocol that it is running on top of Banana in it's greeting: ["Perspective Broker v6", ["pb", "none"]]

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[Twisted-Python] CVS in python
by Itamar Shtull-Trauring April 15, 2002

April 15, 2002

I just rediscovered - the Demos/pdist/ directory in python comes with a some sort of a RCS and CVS implementation. It uses a pickle based RPC protocol. Anyone with some spare time want to take a look and see how compatible this is with real CVS?

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[Twisted-Python] HTTP updated
by Itamar Shtull-Trauring April 14, 2002

April 14, 2002

twisted's HTTP now does persistent and pipelined connections in HTTP/1.1 (HTTP/1.0 is as before, with no support for persistent connections). If you set a content-length header, then data is sent as is, otherwise data is sent in chunked format. Additional tests are probably needed. What's left for full HTTP/1.1 support: 1. Ability for server to read chunked data. 2. 100 continue status (I wonder if anyone uses it) 3. universal content-range support probably more stuff as well.

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[Twisted-Python] of interest
by Drew Whitehouse April 14, 2002

April 14, 2002

This might be of interest to the twisted minds, deferred's on steroids... http://research.microsoft.com/Users/luca/Papers/Polyphony%20ECOOP.A4.pdf (via http://lambda.weblogs.com/, one of my favourite programming BLOGS) -Drew -- ;; Drew.Whitehouse(a)anu.edu.au Sci-Viz/VR Programmer ;; http://anusf.anu.edu.au/~drw900 ANUSF VIZLAB ;; Australian National University Supercomputer Facility

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