Mailman 3 August 2009 - 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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by Tamika 01 May '19

01 May '19

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[Twisted-Python] regarding xml elements
by Raj kumar 02 Oct '13

02 Oct '13

Hi, I have an xml file in my application, I have created an element using Example goes like this......... document.createElement("abc") and i appeneded it by using append() method. But how i can reflect this change to my xml file? and one more thing is i want to create element with some other parameters.... like............. <abc m=" " n=" "> </abc> and i have m and n values as strings with me. can anybody help me to create this element and write it to the existing xml file as a child of an existing element? Thanks in advance.. Raj.. Forgot the famous last words? Access your message archive online at http://in.messenger.yahoo.com/webmessengerpromo.php

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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] http.Request and JSON
by Vincent Gulinao 25 Jan '12

25 Jan '12

How do you read JSON content from a POST using http.Request. I peeked on args and it's empty. TIA.

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[Twisted-Python] twisted-wave?
by Stephen Waterbury 02 Oct '09

02 Oct '09

Just curious what the twisted minions think of google wave and whether anyone is considering or working on a twisted implementation of the federation protocol, <http://www.waveprotocol.org/draft-protocol-spec>. Steve

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[Twisted-Python] strange exception on Python 2.6 + Snow Leopard
by Phil Christensen 30 Sep '09

30 Sep '09

hey all, I just upgraded to Mac OS X 10.6 which includes Python 2.6.1. I'm running the latest SVN HEAD of Twisted, but when I run twistd I get an exception before it continues working (apparently) normally. Here's what I'm seeing: thrawn:~ phil$ twistd Traceback (most recent call last): File "/Users/phil/Workspace/Twisted/twisted/python/usage.py", line 413, in __str__ return self.getSynopsis() + '\n' + self.getUsage(width=None) File "/Users/phil/Workspace/Twisted/twisted/python/usage.py", line 449, in getUsage for (cmd, short, parser, desc) in self.subCommands: File "/Users/phil/Workspace/Twisted/twisted/application/app.py", line 675, in subCommands for plug in plugins: File "/Users/phil/Workspace/Twisted/twisted/plugin.py", line 200, in getPlugins allDropins = getCache(package) --- <exception caught here> --- File "/Users/phil/Workspace/Twisted/twisted/plugin.py", line 165, in getCache provider = pluginModule.load() File "/Users/phil/Workspace/Twisted/twisted/python/modules.py", line 381, in load return self.pathEntry.pythonPath.moduleLoader(self.name) File "/Users/phil/Workspace/Twisted/twisted/python/reflect.py", line 473, in namedAny obj = getattr(obj, n) exceptions.AttributeError: 'module' object has no attribute 'ssl_test' [continues to print usage info] I've deleted all my dropin.cache files, and grepped through my source and Twisted's for a reference to 'ssl_test', but to no avail. Like I said, it doesn't appear to be a fatal exception, but I'd like to make it go away. Any ideas? -phil

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[Twisted-Python] An XMPP client with SSL support
by Pedro Sanchez 18 Sep '09

18 Sep '09

Hello, I have a sample XMPP client with the following structure: from twisted.words.protocols.jabber import client, jid from twisted.internet import reactor ... factory = client.basicClientFactory(myJid, myPasswd) reactor.connectTCP(host,5222,factory) reactor.run() It works well, I can connect to the XMPP server. But I would appreciate if some one could give me some hints on what's required to get the client to connect using a secure SSL link. Thanks, -- Pedro

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[Twisted-Python] deciding to use twisted or not
by Martin-Louis Bright 06 Sep '09

06 Sep '09

Hi! I would like to write a small daemon that monitors (tails) a server log, parses the entries and sends HTTP requests based on some of those entries. I would like it if the reading of the log file and the sending of http requests were asynchronous. Should I use twisted for this? Or is twisted overkill... Martin

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[Twisted-Python] Telnet server using Twisted and AuthenticatingTelnetProtocol
by filoufake-python＠yahoo.fr 02 Sep '09

02 Sep '09

Hello, I have created a telnet server in python. Maybe you wonder why to create a telnet server while Windows has one? Because the windows telnet server does not allow to interract with the desktop. If you try to start a GUI app, it will start and run but will not be displayed on the server desktop. My telnet server will allow to start a GUI application interracting with the windows desktop of the server. Ex. : typing "notepad" in the telnet console will pop up the notepad on the Windows desktop of the server. At the time this server works but has no authentication feature implemented. I would like to implement the authentication using AuthenticatingTelnetProtocol and credential. I found the "cred.py" example on the twistedmatrix website (in the example section) and looked fine as starting point. I quite well understand this expample. I modified the code as follow but always got the same error message when a connectiion is attempted. I have been trying since two weeks but I cannot get it work. Is there a problem with "AuthenticatingTelnetProtocol" The error message: ************************************************************ D:\workspace\twisted>telnet_cred.py 2009-08-20 08:57:11+0200 [-] Log opened. 2009-08-20 08:57:11+0200 [-] __main__.ServerFactory starting on 4738 2009-08-20 08:57:11+0200 [-] Starting factory <__main__.ServerFactory instance at 0x00D79C60> 2009-08-20 08:57:15+0200 [__main__.ServerFactory] DEBUG: buildProtocol - addr IPv4Address(TCP, '127.0.0.1', 4978) 2009-08-20 08:57:15+0200 [__main__.ServerFactory] Unhandled Error Traceback (most recent call last): File "C:\Python25\lib\site-packages\twisted\python\log.py", line 69, in callWithContext return context.call({ILogContext: newCtx}, func, *args, **kw) File "C:\Python25\lib\site-packages\twisted\python\context.py", line 59, in callWithContext return self.currentContext().callWithContext(ctx, func, *args, **kw) File "C:\Python25\lib\site-packages\twisted\python\context.py", line 37, in callWithContext return func(*args,**kw) File "C:\Python25\lib\site-packages\twisted\internet\selectreactor.py", line 146, in _doReadOrWrite why = getattr(selectable, method)() --- <exception caught here> --- File "C:\Python25\lib\site-packages\twisted\internet\tcp.py", line 932, in doRead protocol = self.factory.buildProtocol(self._buildAddr(addr)) File "D:\workspace\twisted\telnet_cred.py", line 130, in buildProtocol p = protocol.ServerFactory.buildProtocol(self, addr) File "C:\Python25\lib\site-packages\twisted\internet\protocol.py", line 98, in buildProtocol p = self.protocol() exceptions.TypeError: __init__() takes exactly 2 arguments (1 given) ************************************************************ The modified code: ************************************************************ # Copyright (c) 2001-2004 Twisted Matrix Laboratories. # See LICENSE for details. import sys from zope.interface import implements, Interface from twisted.protocols import basic from twisted.internet import protocol from twisted.python import log from twisted.cred import error from twisted.cred import portal from twisted.cred import checkers from twisted.cred import credentials from twisted.conch.telnet import AuthenticatingTelnetProtocol, ITelnetProtocol, TelnetProtocol class IProtocolUser(Interface): def getPrivileges(): """Return a list of privileges this user has.""" def logout(): """Cleanup per-login resources allocated to this avatar""" class AnonymousUser: implements(IProtocolUser) def getPrivileges(self): return [1, 2, 3] def logout(self): print "Cleaning up anonymous user resources" class RegularUser: implements(IProtocolUser) def getPrivileges(self): return [1, 2, 3, 5, 6] def logout(self): print "Cleaning up regular user resources" class Administrator: implements(IProtocolUser) def getPrivileges(self): return range(50) def logout(self): print "Cleaning up administrator resources" class Protocol(basic.LineReceiver): user = None portal = None avatar = None logout = None def connectionMade(self): self.sendLine("Login with USER <name> followed by PASS <password> or ANON") self.sendLine("Check privileges with PRIVS") def connectionLost(self, reason): if self.logout: self.logout() self.avatar = None self.logout = None def lineReceived(self, line): f = getattr(self, 'cmd_' + line.upper().split()[0]) if f: try: f(*line.split()[1:]) except TypeError: self.sendLine("Wrong number of arguments.") except: self.sendLine("Server error (probably your fault)") def cmd_ANON(self): if self.portal: self.portal.login(credentials.Anonymous(), None, IProtocolUser ).addCallbacks(self._cbLogin, self._ebLogin ) else: self.sendLine("DENIED") def cmd_USER(self, name): self.user = name self.sendLine("Alright. Now PASS?") def cmd_PASS(self, password): if not self.user: self.sendLine("USER required before PASS") else: if self.portal: self.portal.login( credentials.UsernamePassword(self.user, password), None, IProtocolUser ).addCallbacks(self._cbLogin, self._ebLogin ) else: self.sendLine("DENIED") def cmd_PRIVS(self): self.sendLine("You have the following privileges: ") self.sendLine(" ".join(map(str, self.avatar.getPrivileges()))) def _cbLogin(self, (interface, avatar, logout)): assert interface is IProtocolUser self.avatar = avatar self.logout = logout self.sendLine("Login successful. Available commands: PRIVS") def _ebLogin(self, failure): failure.trap(error.UnauthorizedLogin) self.sendLine("Login denied! Go away.") class ServerFactory(protocol.ServerFactory): ## protocol = Protocol protocol = AuthenticatingTelnetProtocol def __init__(self, portal): self.portal = portal def buildProtocol(self, addr): print "DEBUG: buildProtocol - addr", addr p = protocol.ServerFactory.buildProtocol(self, addr) print "DEBUG2: buildProtocol - addr", addr p.portal = self.portal return p class Realm: implements(portal.IRealm) def requestAvatar(self, avatarId, mind, *interfaces): if IProtocolUser in interfaces: if avatarId == checkers.ANONYMOUS: av = AnonymousUser() elif avatarId.isupper(): # Capitalized usernames are administrators. av = Administrator() else: av = RegularUser() return IProtocolUser, av, av.logout elif ITelnetProtocol in interfaces: print "BEGUG: aaaa" if avatarId.isupper(): av = TelnetProtocol() return ITelnetProtocol, av, None raise NotImplementedError("Only IProtocolUser interface is supported by this realm") def main(): r = Realm() p = portal.Portal(r) c = checkers.InMemoryUsernamePasswordDatabaseDontUse() c.addUser("auser", "thepass") c.addUser("SECONDUSER", "secret") p.registerChecker(c) p.registerChecker(checkers.AllowAnonymousAccess()) f = ServerFactory(p) log.startLogging(sys.stdout) from twisted.internet import reactor reactor.listenTCP(4738, f) reactor.run() if __name__ == '__main__': main() ************************************************************ If someone could help me. Philippe

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