Mailman 3 August 2005 - 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] Problem: spawnProcess() never ending when installSignalHandlers=False
by Matt Feifarek 04 Feb '07

04 Feb '07

Hello. I'm using Twisted 1.3.0 on python2.4 on an Ubuntu-Hoary x86 Linux box. I'm using twisted and spawnProcess() with a Queue structure to chain processes that need to be called (specifically, imagemagick commands). I use the "processEnded" event/method of t.i.p.ProcessProtocol to go from one task to the next. Twisted shares a python process with a multi-threaded web-app-kit (Webware) so it has to be run in a thread. This worked well on other older versions of twisted and older versions of python; also on linux. I've tracked down the problem to be twisted itself (or my incorrect use of it) rather than my code. This example illustrates it: ------------------------------------------------- from twisted.internet import reactor from twisted.internet.protocol import ProcessProtocol class MyProt( ProcessProtocol ): def processEnded(self, reason): print "ended.", reason executable = '/bin/touch' args = ( '/tmp/foo.txt', ) args = (executable,) + tuple(args) reactor.spawnProcess( MyProt(), executable, args ) reactor.callLater( 5, reactor.stop ) #reactor.run() reactor.run(installSignalHandlers=False) ------------------------------------------------- As is, this code never runs the "processEnded()" method of MyProt(). If I change the reactor.run() parameter to leave the signal handlers on, it works. Note that I need to leave the signal handlers turned off because I can't run the reactor in the main thread; Webware needs that. I also know that the subprocess is giving up its file descriptors; I can see that if I put more print statements into MyProt(). And I know that the subprocess is working; /tmp/foo.txt is there. It seems that somehow the reactor is using signals to notice when a process has ended; this makes a certain ammount of sense intuitively, though I don't understand the nitty-gritty of processes and signals at all. And more importantly, this has worked before on other combinations of twisted/python. Is this a bug? If so, has it been fixed? If not, what should I do to detect when a spawned process is finished? Thanks very much. Twisted rocks.

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[Twisted-Python] Traceback from pb-Server
by Stephan Popp 06 Sep '05

06 Sep '05

Hi, Please excuse my bad english, I hope you will understand what I mean, otherwise feel free to ask. I'm trying to get error messages from my server. I'm using twisted 2.0.0 with python 2.4. The server looks like this: from twisted.spread import pb from twisted.internet import reactor, threads class ServerObject(pb.Root): #...some other methods, which aren't involved... def remote_fitness(self, task, taskDescription, serverID): return threads.deferToThread(self.calc, task, serverID, taskDescription) def calc(self, task, serverID, taskDescription): exec('from %s import %s as func' % (taskDescription.fileName,taskDescription.functionName)) #problem: file specified in fileName needn't to be in working directory of server func(task) #calulates something return task if __name__ == '__main__': factory = pb.PBServerFactory(ServerObject()) reactor.listenTCP(8800, factory) reactor.run() The client calls, after connection is made. def1 = root.call_remote("fitness", task, taskDescription, serverID) def1.addCallback(self.serverCB) def1.addErrback(self.serverErrorCB) def serverErrorCB(self, reason): print reason If the pythonscript named taskDescription.fileName isn't there self.serverErrorCB is called - thats ok. But it prints: reason [Failure instance: Traceback from remote host -- Traceback unavailable] But I need to know why the call failed. Can anyone please help me to get the traceback or the exception message that the server prints (exceptions.ImportError: No module named fitfunc2).

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[Twisted-Python] database connection through ssh tunnel using twisted
by Yves Glodt 06 Sep '05

06 Sep '05

Hello, (I am new to twisted, so please excuse me if my question is not appropriate...) I am using the python module kinterbasdb [1] for connecting to a Firebird DB, and I wonder if it's possible, using twisted, to pass this connection through a ssh tunnel, which should be created on the fly by twisted (without running a /usr/bin/ssh commandline)... best regards and thanks in advance, Yves [1]: http://kinterbasdb.sourceforge.net/dist_docs/usage.html#tutorial_connect

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[Twisted-Python] Weekly Bug Summary
by James Y Knight 01 Sep '05

01 Sep '05

So I forgot to generate this report for a few weeks now...but to make up for that, I made a crontab to do it for me, finally. Bug summary ______________________ Since 2005-07-27 12:20:33.530000: Bugs opened: 29 Bugs closed: 28 Total open bugs: 418 (+1) Urgent: 10 (+1) Bug: 186 (+5) Feature: 151 (+1) Wish: 71 (-6) New / Reopened Bugs ______________________ ==== Urgent ==== [CORE] CannotListenError (SO_REUSEADDR) (6 days ago) http://twistedmatrix.com/bugs/issue1151 opened by hraban ==== Bug ==== Raised Jellyable pb.Error doesn't jelly if raised in callback (1 1/2 hours ago) http://twistedmatrix.com/bugs/issue1156 opened by justinj [DOCUMENTATION] Rename "HOWTOs" to "Developer Guide" (yesterday) http://twistedmatrix.com/bugs/issue1155 opened by spiv basic.LineReceiver doesn't handle variable line delimiters (yesterday) http://twistedmatrix.com/bugs/issue1154 opened by jeffsilver [WEB] web.proxy does not set or use 'Via' header (1 week ago) http://twistedmatrix.com/bugs/issue1149 opened by jeffsilver [DOCUMENTATION] Need a howto for Twisted's logging (twisted.python.log) (yesterday) http://twistedmatrix.com/bugs/issue1153 opened by spiv [DOCUMENTATION] Documentation: Aliases not covered in the API documentation (1 week ago) http://twistedmatrix.com/bugs/issue1143 opened by moof Combine twisted.manhole._inspectro.LoggingProtocol and twisted.protocols.policies.TrafficLoggingProtocol (1 week ago) http://twistedmatrix.com/bugs/issue1150 opened by spiv twisted.mail.smtp.py timeout can cause runtime error (1 week ago) http://twistedmatrix.com/bugs/issue1147 opened by xing [DOCUMENTATION] Is the Deferred tutorial actually a good document? (2 weeks ago) http://twistedmatrix.com/bugs/issue1138 opened by remote [DOCUMENTATION] Documentation: twisted.internet.reactor does not appear in the API docs (1 week ago) http://twistedmatrix.com/bugs/issue1144 opened by moof [DOCUMENTATION, WEBSITE] Generate official documents at commit time (1 week ago) http://twistedmatrix.com/bugs/issue1140 opened by hypatia [WEBSITE] Web site menu disappears when window not big (2 weeks ago) http://twistedmatrix.com/bugs/issue1137 opened by justinj Documentation: man pages appear as source rather thn HTML on the doc website (1 week ago) http://twistedmatrix.com/bugs/issue1146 opened by moof Numerous broken URLs in documentation (1 week ago) CLOSED http://twistedmatrix.com/bugs/issue1142 opened by TimothyFitz [NEEP HELP] Update mktap.xhtml to reflect current best practices (1 week ago) http://twistedmatrix.com/bugs/issue1139 opened by hypatia [CORE] Finite object leak in threadpool (3 weeks ago) http://twistedmatrix.com/bugs/issue1134 opened by jeffsilver [PATCH] gthreadless.py (4 weeks ago) http://twistedmatrix.com/bugs/issue1129 opened by stefanomasini trial misnames temporary directories (2 weeks ago) CLOSED http://twistedmatrix.com/bugs/issue1135 opened by exarkun [CORE] possible leak/cycle-reference in baseclient & connector (3 weeks ago) http://twistedmatrix.com/bugs/issue1131 opened by jerry [FTP] [PATCH] FTPClientBasic PASS command problem (3 weeks ago) CLOSED http://twistedmatrix.com/bugs/issue1130 opened by michele.petrazzo Need to use portable windowing API (3 weeks ago) CLOSED http://twistedmatrix.com/bugs/issue1133 opened by duanev ==== Feature ==== [DOCUMENTATION, WEB] xmlrpc.html doesn't describe how to return errors to the client (2 days ago) http://twistedmatrix.com/bugs/issue1152 opened by spiv [DOCUMENTATION] Replace current finger examples with lifeless's and radix's work on a TDD finger example (1 week ago) http://twistedmatrix.com/bugs/issue1148 opened by hypatia Trial spews color codes by default on win32 (1 week ago) http://twistedmatrix.com/bugs/issue1141 opened by TimothyFitz [DOCUMENTATION] documenting some 'tips' for newbies (2 weeks ago) http://twistedmatrix.com/bugs/issue1136 opened by tjs [WEB] XML-RPC for web2 - propose API changes (3 weeks ago) http://twistedmatrix.com/bugs/issue1132 opened by itamarst Protocol-level wrapper for transport.loseConnection (1 month ago) http://twistedmatrix.com/bugs/issue1128 opened by subterrific ==== Wish ==== [DOCUMENTATION] Documentation: Reactor "quick reference" (1 week ago) http://twistedmatrix.com/bugs/issue1145 opened by moof Bugs Closed ______________________ ==== Bug ==== Numerous broken URLs in documentation (1 week ago) http://twistedmatrix.com/bugs/issue1142 opened by TimothyFitz, closed by exarkun [CORE, DOCUMENTATION] [PATCH] UDP Doc Update: Multicast Howto and Example (2 months ago) http://twistedmatrix.com/bugs/issue1084 opened by ra1n, closed by hypatia [DOCUMENTATION, PB] Doc-Example QuoteTap isn't easy to run (18 months ago) http://twistedmatrix.com/bugs/issue508 opened by nferchen, closed by hypatia pbsimple.py code is missing from the "Using Perspective Broker" howto on web site (3 months ago) http://twistedmatrix.com/bugs/issue1053 opened by mg, closed by hypatia [DOCUMENTATION] [PATCH] Twisted overview howto needs updating (19 months ago) http://twistedmatrix.com/bugs/issue481 opened by jml, closed by hypatia [APPLICATION, DOCUMENTATION] Application howto should have better explanation of services (15 months ago) http://twistedmatrix.com/bugs/issue633 opened by hypatia, closed by hypatia [DOCUMENTATION] [PATCH] Changes to HOWTO index page (3 months ago) http://twistedmatrix.com/bugs/issue1043 opened by STemplar, closed by hypatia [PATCH] Light editing of "Using Application" for flow and continuity (3 months ago) http://twistedmatrix.com/bugs/issue1052 opened by waterbug, closed by hypatia [CORE] BUG: exceptions in setUpClass cause trial to exit prematurely (5 months ago) http://twistedmatrix.com/bugs/issue960 opened by exarkun, closed by exarkun [TRIAL] Trial --tbformat=emacs now shows plain-style tracebacks (9 months ago) http://twistedmatrix.com/bugs/issue783 opened by radix, closed by exarkun trial misnames temporary directories (2 weeks ago) http://twistedmatrix.com/bugs/issue1135 opened by exarkun, closed by exarkun [FTP] bug in mozilla ftp support (21 months ago) http://twistedmatrix.com/bugs/issue412 opened by slyphon, closed by spiv [FTP] ftp blocks unless using a passive client (11 months ago) http://twistedmatrix.com/bugs/issue723 opened by cablehead, closed by cablehead TypeError in Failure.raiseException when using defer.deferredGenerator and perspective broker (1 month ago) http://twistedmatrix.com/bugs/issue1103 opened by titty, closed by titty [FTP] [PATCH] FTPClientBasic PASS command problem (3 weeks ago) http://twistedmatrix.com/bugs/issue1130 opened by michele.petrazzo, closed by spiv Need to use portable windowing API (3 weeks ago) http://twistedmatrix.com/bugs/issue1133 opened by duanev, closed by exarkun ==== Feature ==== [DOCUMENTATION] Document how to write a Service correctly (1 month ago) http://twistedmatrix.com/bugs/issue1118 opened by spiv, closed by hypatia [DOCUMENTATION] Document Services available in Twisted (1 month ago) http://twistedmatrix.com/bugs/issue1119 opened by spiv, closed by hypatia [FTP] [PATCH] STOR, MKD, RMD and DELE for twisted.protocols.ftp. (4 months ago) http://twistedmatrix.com/bugs/issue1003 opened by mkerrin, closed by mkerrin deferToThread decorator (3 months ago) http://twistedmatrix.com/bugs/issue1071 opened by tjs, closed by tjs Make Twisted pychecker friendly (25 months ago) http://twistedmatrix.com/bugs/issue86 opened by spiv, closed by exarkun ==== Wish ==== [DOCUMENTATION] Twisted complete but concise architecture view in Documentation (13 months ago) http://twistedmatrix.com/bugs/issue650 opened by sridharinfinity, closed by hypatia twisted.spread.util.StringPager.nextPage makes tons of string copies (18 months ago) http://twistedmatrix.com/bugs/issue548 opened by exarkun, closed by exarkun Update download page with Python 2.4/1.3.0/Win32 installer (6 months ago) http://twistedmatrix.com/bugs/issue900 opened by moonfallen, closed by exarkun Naming the thread pools, especially for adbapi's ConnectionPool (3 months ago) http://twistedmatrix.com/bugs/issue1062 opened by bruce, closed by exarkun quiet those deprecation warnings for deployment uses of deprecated code via mktap (3 months ago) http://twistedmatrix.com/bugs/issue1059 opened by bruce, closed by exarkun [DOCUMENTATION] "Converting from asyncore" Howto (25 months ago) http://twistedmatrix.com/bugs/issue81 opened by itamarst, closed by exarkun Cred needs pam checker, and tehre is already one (3 months ago) http://twistedmatrix.com/bugs/issue1044 opened by liiwi, closed by exarkun

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[Twisted-Python] twisted.internet.error.ConnectionLost
by Daniel Isenegger 01 Sep '05

01 Sep '05

Hi in an instance of protocol.basic.lineOnlyReceiver i i read in a file in a string and try to send this string to another instance of protocol.basic.lineOnlyReceiver trough the normal self.transport.write(theString + "\r\n") when doing this i get the error message: IK_IC_TSS 16:13:53:03 connectionLost() for the instance IK_IC_TSS due to reason: [Failure instance: Traceback (failure with no frames): twisted.internet.error.ConnectionLost: Connection to the other side was lost in a non-clean fashion. The file is a normal text file of about 200KB. I googled for similar types of errors, but could not find smth. Is there an explicit string size limit or is it just the fact the the lineOnlyReceiver is not built for that kind of data transfer? Thanks Dani

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[Twisted-Python] laxdb - an async dbapi wrapper
by Matt Goodall 01 Sep '05

01 Sep '05

Hi, In response to the announcement of the Twisted Asynchronous Database Api (tada), <http://www.darkarts.co.za/projects/tada/, I thought I should mention something I wrote. [Unfortunately, tada does not use threads correctly so it's likely to break. The author knows this and has added a warning to the module for now.] A while back, I started messing around with making a standard, blocking db-api module appear non-blocking but with a deferred API. I called it laxdb and it's in my sandbox. svn://svn.twistedmatrix.com/svn/Twisted/sandbox/mg/laxdb.py http://svn.twistedmatrix.com/cvs/sandbox/mg/laxdb.py?view=markup laxdb is quite literally an async db-api interface and not a t.enterprise.adbapi style interface. In particular, it provides exactly the same API (but deferred) and it doesn't take over transaction management. It also doesn't wrongly call a cursor, "Transaction" ;-). I recently went back to laxdb and finished it off, also adding a connection pool implementation. Now, I haven't used laxdb in a real project and there are no unit tests but I think it's reasonably complete. It should work with any dbapi module that has threadsafety level 1 or higher, just like adbapi. If there's interest in this way of accessing a database then I would be happy to write tests etc, move it into Twisted and maintain it. Cheers, Matt -- __ / \__ Matt Goodall, Pollenation Internet Ltd \__/ \ w: http://www.pollenation.net __/ \__/ e: matt(a)pollenation.net / \__/ \ t: +44 (0)113 2252500 \__/ \__/ / \ Any views expressed are my own and do not necessarily \__/ reflect the views of my employer.

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[Twisted-Python] how to install twisted in redhat linux?
by Mosas 31 Aug '05

31 Aug '05

Dear sir, Is there any rpm packages available for twisted , if any get me the link for the source package. If anyone had tried twisted in Redhat linux kindly guide me out for the installation. Regards, S.Rajkumar __________________________________________________________ Yahoo! India Matrimony: Find your partner online. Go to http://yahoo.shaadi.com

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[Twisted-Python] Re: Sockets: code works locally but fails over LAN
by Jp Calderone 31 Aug '05

31 Aug '05

On 31 Aug 2005 06:03:00 -0700, n00m <n00m(a)narod.ru> wrote: >import socket, thread >host, port = '192.168.0.3', 1434 >s1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) >s2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) >s2.connect((host, 1433)) >s1.bind((host, port)) >s1.listen(1) >cn, addr = s1.accept() > >def VB_SCRIPT(): > while 1: > data = cn.recv(4096) > if not data: return > s2.send(data) > print 'VB_SCRIPT:' + data + '\n\n' > >def SQL_SERVER(): > while 1: > data = s2.recv(4096) > if not data: return > cn.send(data) > print 'SQL_SERVER:' + data + '\n\n' > >thread.start_new_thread(VB_SCRIPT,()) >thread.start_new_thread(SQL_SERVER,()) This is about the same as: mktap portforward --port 1434 --host 192.168.0.3 --dest_port 1433 twistd -f portforward.tap You'll find the code behind these two commands here: <http://cvs.twistedmatrix.com/cvs/trunk/twisted/tap/portforward.py?view=mark…> and here: <http://cvs.twistedmatrix.com/cvs/trunk/twisted/protocols/portforward.py?vie…> And of course, the main Twisted site is <http://twistedmatrix.com/>. Some differences between portforward.tap and your code include: portforward.tap will accept multiple connections, rather than just one. portforward.tap won't print out all the bytes it receives (I assume this is just for debugging purposes anyway - if not, a simple modification will cause it to do this). portforward.tap won't non-deterministically drop traffic, since Twisted checks the return value of send() and properly re-transmits anything which has not actually been sent. Hope this helps, Jp

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Twisted August 2005