Mailman 3 December 2004 - Twisted

[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 06 Aug '21

06 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] More on PB Copyable Errors
by Justin Johnson 15 Mar '05

15 Mar '05

I would really like to be able to pass custom exceptions over the wire in PB. Previous discussion on this list ended with the conclusion that it currently isn't possible without hacking a local copy of Twisted. I have done that to get the result I want, with minimal testing, and would like to get some discussion going around this topic. Attached are 3 test files, s.py for the server, c.py for the client, and e.py for the error definitions which are imported by both s.py and c.py. If I make the following modification to my local copy of twisted/spread/pb.py in the CopyableFailure's getStateToCopy method, the custom error is passed back as I want. #state['value'] = str(self.value) # Exception instance state['value'] = self.value # Exception instance I was wondering if there is a reason we wouldn't want to change the code to check for registered unjellyables for the exception, and return them (or rather go through the jelly/unjelly process) if they exist, but return the string representation otherwise. Maybe that is more complicated than I realize. Any thoughts or suggestions on how we might make this possible? Thanks. -Justin

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[Twisted-Python] Starting MoinMoin as nonroot Linux User
by Garrett Rolfs 28 Jan '05

28 Jan '05

I fear I'm missing something basic and overlooked something already documented. Hopefully someone will set me straight. I'm attempting to play with MoinMoin using twisted as the webserver. I'm running on linux using python 2.3.4 and twisted 1.3.0 as a nonroot user. When I attempt to start MoinMoin, I see the following in the log: 2004/12/20 17:05 CST [-] Starting factory <MoinMoin.server.twistedmoin.MoinSite instance at 0x40a070ec> 2004/12/20 17:05 CST [-] Traceback (most recent call last): 2004/12/20 17:05 CST [-] File "/home/stage3/bin/twistd", line 36, in ? 2004/12/20 17:05 CST [-] run() 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 184, in run 2004/12/20 17:05 CST [-] app.run(runApp, ServerOptions) 2004/12/2017:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/application/app.py", line 205, in run 2004/12/20 17:05 CST [-] runApp(config) 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 175, in runApp 2004/12/20 17:05 CST [-] startApplication(config, application) 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 160, in startApplication 2004/12/20 17:05 CST [-] shedPrivileges(config['euid'], process.uid, process.gid) 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/scripts/twistd.py", line 134, in shedPrivileges 2004/12/20 17:05 CST [-] switchUID(uid, gid, euid) 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/python/util.py", line 606, in switchUID 2004/12/20 17:05 CST [-] initgroups(uid, gid) 2004/12/20 17:05 CST [-] File "/home/stage3/lib/python2.3/site-packages/twisted/python/util.py", line 584, in initgroups 2004/12/20 17:05 CST [-] setgroups(l) 2004/12/20 17:05 CST [-] OSError: [Errno 1] Operation not permitted I am merely experimenting and I would like to run without being root. Is it possible? Thanks, -Garrett Rolfs

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[Twisted-Python] Python 2.4 compatible windows binaries?
by Marc-Antoine Parent 01 Jan '05

01 Jan '05

Good day! I am thinking of migrating to Python 2.4, and I am using Twisted (for Nevow). The rebuild was simple on my OSX machine, and twisted works very well under 2.4, but I am not familiar with the build procedure on Windows. Are you planning to make Windows binaries for Python 2.4, or otherwise can you give me an idea of how I should go about to build them? Thank you very much, Marc-Antoine Parent

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[Twisted-Python] ludicrous timeouts in protocols.http.HTTPFactory and web.server.Site
by Antoine Pitrou 31 Dec '04

31 Dec '04

Hi, I'm accessing a twisted-based XMLRPC server through an HTTP proxy which seems to leave outgoing connections open for a very long time (I think it waits for the server to close them on its own). This means that after a handful of remote method calls through this proxy, my server runs into file descriptor limits: Traceback (most recent call last): File "/usr/lib/python2.3/site-packages/twisted/python/log.py", line 65, in callWithLogger File "/usr/lib/python2.3/site-packages/twisted/python/log.py", line 52, in callWithContext File "/usr/lib/python2.3/site-packages/twisted/python/context.py", line 43, in callWithContext File "/usr/lib/python2.3/site-packages/twisted/internet/default.py", line 535, in _doReadOrWrite --- <exception caught here> --- File "/usr/lib/python2.3/site-packages/twisted/internet/tcp.py", line 625, in doRead File "/usr/src/build/475206-i386/install/usr/lib/python2.3/socket.py", line 167, in accept socket.error: (24, 'Too many open files') Which is easily checked by a netstat dump : $ netstat --inet --tcp -n -p | grep :8550 tcp 0 0 192.33.178.29:8550 193.49.124.107:30839 ESTABLISHED 3076/python tcp 0 0 192.33.178.29:8550 193.49.124.107:25463 ESTABLISHED 3076/python tcp 0 0 192.33.178.29:8550 193.49.124.107:37494 ESTABLISHED 3076/python tcp 0 0 192.33.178.29:8550 193.49.124.107:33910 ESTABLISHED 3076/python tcp 0 0 192.33.178.29:8550 193.49.124.107:20854 ESTABLISHED 3076/python ... ... and so on for exactly 998 lines Looking at the Twisted code, I see that very long timeouts have been defined for both protocols.http.HTTPFactory and web.server.Site (60*60*12, that is 12 hours!). If I override the "timeout" parameter when constructing the Site receiving XMLRPC connections, then the problem disappears: reactor.listenTCP(xmlrpc_port, server.Site(self, timeout=30), interface=xmlrpc_host) I think the default values in Twisted are quite bogus and should be changed to more sensible ones. 30 or 60 seconds is ok in the context of an HTTP connection. Very long timeouts on the other hand make the server very vulnerable. Regards Antoine.

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[Twisted-Python] access an XMLRPC service through an HTTP proxy
by Antoine Pitrou 29 Dec '04

29 Dec '04

Hi, I'm using twisted.web.xmlrpc.Proxy to connect to an XMLRPC service. Unfortunately there are situations in which I have to go through an HTTP proxy, yet there doesn't seem to be an option for this (and looking at the code, the connection to the remote server is quite "harwired"). Is there a simple way to do this ? (write a new protocol factory perhaps ?) Also, is there a way to discover the OS's HTTP proxy settings ? (especially under Windows) Thanks Antoine.

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[Twisted-Python] keyword changed API
by Andrea Arcangeli 28 Dec '04

28 Dec '04

This fixes a little runtime issue with the new python version: --- ./python/htmlizer.py.~1~ 2004-11-28 05:00:05.000000000 +0100 +++ ./python/htmlizer.py 2004-12-04 18:06:06.329802464 +0100 @@ -22,7 +22,7 @@ class TokenPrinter: type = "identifier" self.parameters = 1 elif type == tokenize.NAME: - if keyword.kwdict.has_key(token): + if keyword.iskeyword(token): type = 'keyword' else: if self.parameters: Not sure what's the right way to fix these things to retain backwards compatibility (perhaps checking sys.version_info?).

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[Twisted-Python] microdom bug
by Pavel Volkovitskiy 28 Dec '04

28 Dec '04

Hello test.py =================================================================== #!/usr/bin/env python2.4 from twisted.web import microdom import xml.dom.minidom data = '<div> <div>div 1.1</div> <div>div 1.2</div> </div>' doc_minidom = xml.dom.minidom.parseString(data) doc_microdom = microdom.parseString(data) node_minidom = doc_minidom.getElementsByTagName('div')[0].getElementsByTagName('div')[0] node_microdom = doc_microdom.getElementsByTagName('div')[0].getElementsByTagName('div')[0] print 'minidom:', node_minidom.toxml() print 'microdom:', node_microdom.toxml() ==================================================================== $./test.py =========================================== minidom: <div>div 1.1</div> microdom: <div><div>div 1.1</div><div>div 1.2</div></div> ===========================================

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[Twisted-Python] Moving sandbox out of the trunk.
by Tommi Virtanen 28 Dec '04

28 Dec '04

If no one yells at me during the next 24 hours, tomorrow I will run svn commit -m 'Move sandbox outside of trunk.' \ svn+ssh://tv@cvs.twistedmatrix.com/svn/Twisted/trunk/sandbox \ svn+ssh://tv@cvs.twistedmatrix.com/svn/Twisted/sandbox This is your only chance to prevent it. I want it gone.

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Twisted December 2004