Mailman 3 October 2004 - Twisted

[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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[Twisted-Python] Get IP of connecting client in XMLRPC server
by Remy C. Cool 28 Apr '13

28 Apr '13

Hello, On 18 May 2004, the following message was posted to this mailinglist: Jp Calderone exarkun at divmod.com wrote: >Daniel Newton wrote: > > I have a simple XML-PRC server similar to the example below: > > from twisted.web import xmlrpc, server > > class Example(xmlrpc.XMLRPC): > """An example object to be published.""" > > def xmlrpc_add(self, a, b): > """Return sum of arguments.""" > return a + b def xmlrpc_whatIsMyAddress(self): return self.transport.getPeer().host > > if __name__ == '__main__': > from twisted.internet import reactor > r = Example() > reactor.listenTCP(7080, server.Site(r)) > reactor.run() > > I want to be able to get the address of the client that calls the xmlrpc > method can anyone help me with this? This solution didn't work because 'transport' isn't a property of the Example class. I'm currently in the process of changing from a customized SimpleXMLRPCServer to a twisted XMLRPC server solution and I need to insert the client IP into the attributes passed to the called xmlrpc method. Anyone who knows the answer and is willing to share the info? Regards, Remy

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[Twisted-Python] twisted and threading
by twisted-10152003＠atlas.lcs.mit.edu 26 Nov '04

26 Nov '04

I wrapped a c library using swig and was hoping to make use of it in a twisted server I am writing. The issue is that the c library fundamentally blocks waiting for input that may never come. Is there a way from twisted to deal with this cleanly within the framework? I.e. some combination of adding a reactor.addSystemEventTrigger event and calling reactor.threadpool.stop seem like it should work but I haven't had any luck yet. (I saw all the previous posts on this topic, but the recommendations don't seem applicable in my case since the blocking is occurring outside my control in a c library and the blocking call may never return.) Thanks, Steve Bauer

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[Twisted-Python] mktap news error
by Tim Terlegård 30 Oct '04

30 Oct '04

I'm trying to run the twisted.news server. This should be possible using: $ mktap news but that results in ImportError: news. I get the traceback below. What am I doing wrong? Tim Traceback (most recent call last): File "/usr/bin/mktap", line 30, in ? run() File "/usr/lib/python2.3/site-packages/twisted/scripts/mktap.py", line 152, in run options.parseOptions(sys.argv[1:]) File "/usr/lib/python2.3/site-packages/twisted/python/usage.py", line 209, in parseOptions self.postOptions() File "/usr/lib/python2.3/site-packages/twisted/scripts/mktap.py", line 139, in postOptions self.parseOptions(self.params) File "/usr/lib/python2.3/site-packages/twisted/python/usage.py", line 197, in parseOptions self.subOptions = parser() File "/usr/lib/python2.3/site-packages/twisted/scripts/mktap.py", line 105, in <lambda> sc = [ [name, None, (lambda obj=module:obj.load().Options()), File "/usr/lib/python2.3/site-packages/twisted/python/plugin.py", line 61, in load return namedModule(self.module) File "/usr/lib/python2.3/site-packages/twisted/python/reflect.py", line 348, in namedModule topLevel = __import__(name) ImportError: No module named news

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[Twisted-Python] Re: [Twisted-commits] r12244 - Make spewer log calls in threads, too
by exarkun＠divmod.com 30 Oct '04

30 Oct '04

On Sat, 30 Oct 2004 05:12:25 -0600, Andrew Bennetts <spiv(a)wolfwood.twistedmatrix.com> wrote: >Author: spiv > Date: Sat Oct 30 05:12:24 2004 > New Revision: 12244 > > Modified: > trunk/twisted/application/app.py > Log: > Make spewer log calls in threads, too > > Modified: trunk/twisted/application/app.py > ============================================================================== > --- trunk/twisted/application/app.py (original) > +++ trunk/twisted/application/app.py Sat Oct 30 05:12:24 2004 > @@ -7,7 +7,7 @@ > from twisted.persisted import sob > from twisted.application import compat, service > from twisted import copyright > -import sys, os, pdb, profile, getpass, traceback, signal > +import sys, os, pdb, profile, getpass, traceback, signal, threading > > reactorTypes = { > 'wx': 'twisted.internet.wxreactor', > @@ -199,6 +199,7 @@ > """Print an insanely verbose log of everything that happens. Useful > when debugging freezes or locks in complex code.""" > sys.settrace(util.spewer) > + threading.settrace(util.spewer) > Is util.spewer really thread-safe? I would have expected otherwise. Jp

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[Twisted-Python] UncatchableExceptions
by Andrew Bennetts 30 Oct '04

30 Oct '04

<foom> exarkun: I suspect we should introduce a UncatchableExceptions constant somewhere <foom> exarkun: and require that all except:'s are preceded by except UncatchableExceptions: raise <exarkun> foom: It's possible that is a good idea. <exarkun> foom: I'm not really sure, though. <spiv> foom: With (KeyboardInterrupt, SystemExit, MemoryError, SystemError) ? <foom> spiv: yes I guess this would live in twisted.python somewhere, and the coding standard would be updated to require its use instead of bare "except:" Python-dev have discussed a similar measure for the python standard library (in the exceptions module), but hadn't come to any consensus last time I looked. Thoughts? Objections? -Andrew.

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[Twisted-Python] Weekly Bug Summary
by James Y Knight 30 Oct '04

30 Oct '04

Bug summary ______________________ Since 2004-10-23 04:58:55.150000: Bugs opened: 14 Bugs closed: 3 Total open bugs: 327 (+11) New / Reopened Bugs ______________________ Incorrect traceback from trial (7 hours ago) http://www.twistedmatrix.com/bugs/issue769 opened by exarkun [TRIAL] Trial incorrectly reports the number of tests run (6 hours ago) CLOSED http://www.twistedmatrix.com/bugs/issue770 opened by exarkun [TRIAL] Traceback from trial in trivial usage (7 hours ago) http://www.twistedmatrix.com/bugs/issue768 opened by exarkun Something broke twisted.web or twisted.internet.tcp in the latests commits (11 hours ago) http://www.twistedmatrix.com/bugs/issue767 opened by dialtone wprocess is broken (4 days ago) http://www.twistedmatrix.com/bugs/issue760 opened by slyphon [CORE] test_trial fails on windows (5 days ago) http://www.twistedmatrix.com/bugs/issue757 opened by itamarst [WEB] HTTP logging lets user corrupt log file entry (4 days ago) CLOSED http://www.twistedmatrix.com/bugs/issue759 opened by Tv SSL connection hangs open with firefox, can't reverseproxy things on a HTTPS server. (2 days ago) http://www.twistedmatrix.com/bugs/issue764 opened by Tv [CORE] Twisted doesn't exit with proper exit code after SIGINT (4 days ago) http://www.twistedmatrix.com/bugs/issue761 opened by jknight [DOCUMENTATION] tutorial still using deprecated components.Interface (5 days ago) http://www.twistedmatrix.com/bugs/issue758 opened by spiv [TRIAL] setUp and tearDown should be allowed to raise FailTest (yesterday) http://www.twistedmatrix.com/bugs/issue766 opened by jknight Added Timeout checking to IMAP4Client (yesterday) http://www.twistedmatrix.com/bugs/issue765 opened by bkirsch Reactor should cache loop start time for use instead of time.time() (3 days ago) http://www.twistedmatrix.com/bugs/issue763 opened by jknight [CORE] The spewer (i.e. twistd --spew) only spews for the main thread (4 days ago) http://www.twistedmatrix.com/bugs/issue762 opened by spiv Bugs Closed ______________________ [TRIAL] Trial incorrectly reports the number of tests run (6 hours ago) http://www.twistedmatrix.com/bugs/issue770 opened by exarkun [WEB] HTTP logging lets user corrupt log file entry (4 days ago) http://www.twistedmatrix.com/bugs/issue759 opened by Tv conch client writes garbage to known_hosts file (1 week ago) http://www.twistedmatrix.com/bugs/issue749 opened by exarkun

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[Twisted-Python] doc/core/howto/components.xhtml question
by Lee Harr 29 Oct '04

29 Oct '04

in doc/core/howto/components.xhtml there is a HairDryer class like this: class HairDryer: def plug(self, socket): adapted = IAmericanSocket(socket) assert socket.voltage() == 110, "BOOM" print "I was plugged in properly and am operating" I am new to this interface / adaptation system, but I am thinking it should be: class HairDryer: def plug(self, socket): adapted = IAmericanSocket(socket) assert adapted.voltage() == 110, "BOOM" print "I was plugged in properly and am operating" If so... Index: doc/core/howto/components.xhtml =================================================================== --- doc/core/howto/components.xhtml (revision 12146) +++ doc/core/howto/components.xhtml (working copy) @@ -338,7 +338,7 @@ class HairDryer: def plug(self, socket): adapted = IAmericanSocket(socket) - assert socket.voltage() == 110, "BOOM" + assert adapted.voltage() == 110, "BOOM" print "I was plugged in properly and am operating" </pre> _________________________________________________________________ FREE pop-up blocking with the new MSN Toolbar - get it now! http://toolbar.msn.com/

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Re: [Twisted-Python] Case for an Async MySQL Driver?
by Seun Osewa 28 Oct '04

28 Oct '04

Nick Arnett wrote: >Anybody want to offer more about how this might look? I don't know if I >can fit it into my work, but it would be a terrific addition to my >toolbox (I have many thousands of lines of Python talking to MySQL). >And I suppose it would offer the excuse I've been needing to ask our CEO >about his thoughts on open-sourcing parts of our code. Here are some ideas for an async MySQL 'driver' for Twisted: 1) create or use a connection: connection = MySqlPool.connect("hostname", "username", "password") 2) send a query: d = connection.exec(["begin", "update db.stats set value=value+1 where accesses", "select * from db.important_table", "commit"]) def myCallBack (resultset): # 'results' contains the result of the last QUERY in the list of commands sent to exec. # it is empty if there's no QUERY and no error .... def myErrBack (errorval, errorstring command_id): # this is called if there's an error in executing any of the commands # command_id indicates which point in the list of commands the error occured # errorval is the error name/number, errorstring the exact result 3) close the connection: connection.close() This format allows the user to send an unlimited number of queries to be run together, thus limiting the number of callbacks necessary for a program requiring many small interactions with the database. "begin" and "end" will count as an example. This minimalistic API also allows more advanced (twisted.enterprise style) interfaces to be built on top of it. Is there any task you can think of that can't be built on top of this? (of course I've not touched the implementation details...) Regards, Seun.

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[Twisted-Python] Latest modpubsub is using Twisted
by L. Daniel Burr 28 Oct '04

28 Oct '04

After experiencing the itching and burning of asyncore, their python developers have turned to twisted, the soothing ointment of network programming. http://www.mod-pubsub.org/blog/archives/440_Repubsub_good_to_go.html Naz

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