Mailman 3 March 2003 - Twisted

[Twisted-Python] Newbie question, using Twisted with cygwin
by David P. Janes March 31, 2003

March 31, 2003

So, I've installed Twisted using the Windows installer, using a plain vanilla Python 2.2 installation. I'm in cygwin, so I set up appropriate aliases: alias mktap='python c:/python22/lib/site-packages/twisted/scripts/mktap.py' alias twistd='python c:/python22/lib/site-packages/twisted/scripts/twistd.py' No errors occur during the installation. I run "mktap", specifying a port and a log file, and I get a "web.tap" file. Then I run twistd -f web.tap And I get .... nothing. No log file, no … [View More]

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[Twisted-Python] response with special characters, utf-8
by Mario Ruggier March 30, 2003

March 30, 2003

Hello, the rpy below returns a string with special characters, which I would like to be displayed by the web client. However the 3 non-ascii characters below are displayed as garbage (even if differently), in two browsers I have tried with (IE and Safari). What am I missing? Thanks for any help, mario ################################## ### chars_test.rpy from twisted.web import resource from twisted.web.server import NOT_DONE_YET def errBack(err, request): request.write('error: ' + … [View More]

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[Twisted-Python] Question re twisted.protocols.irc.IRC
by David McNab March 30, 2003

March 30, 2003

Hi, Thx to exarkun who told me T need to implement methods irc_*, eg irc_JOIN, irc_NICK etc. Has anyone got any sample code for such methods, to the point of implementing the basics of ircd, so that clients can register their nicks, join channels, talk to other users etc? Thx David

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[Twisted-Python] help! - listenTCP failing
by David McNab March 30, 2003

March 30, 2003

Hi, I'm building an app that will need the ability to start and stop protocol servers dynamically. As part of figuring this out, I've added an ApplicationService to the app, and within ApplicationService.startService(), I'm calling self.get_application.listenTCP(portnum, myprotocol). This is having no visible effect, since the port is not getting opened. I tried, within startService(), calling reactor.listenTCP() instead. This starts up the protocol and opens the port just fine, but when I … [View More]later call app.unlistenTCP(port) to shut down the protocol, I get the exception (see below). What am I doing wrong? What's the best and simplest way to dynamically start and stop server protocols at runtime()? Thanks in advance David Traceback (most recent call last): File "/usr/lib/python2.2/site-packages/twisted/internet/app.py", line 744, in run main.run(installSignalHandlers=installSignalHandlers) File "/usr/lib/python2.2/site-packages/twisted/internet/main.py", line 106, in run _getReactor().run() File "/usr/lib/python2.2/site-packages/twisted/internet/default.py", line 113, in run self.mainLoop() File "/usr/lib/python2.2/site-packages/twisted/internet/default.py", line 124, in mainLoop self.doIteration(t) --- <exception caught here> --- File "/usr/lib/python2.2/site-packages/twisted/internet/default.py", line 450, in doSelect why = getattr(selectable, method)() File "/usr/lib/python2.2/site-packages/twisted/internet/tcp.py", line 105, in doRead return self.protocol.dataReceived(data) File "/usr/lib/python2.2/site-packages/twisted/protocols/telnet.py", line 314, in dataReceived why = self.processChunk(c) File "/usr/lib/python2.2/site-packages/twisted/protocols/telnet.py", line 261, in processChunk self.processLine(buf) File "/usr/lib/python2.2/site-packages/twisted/protocols/telnet.py", line 221, in processLine self.mode = getattr(self, "telnet_"+self.mode)(line) File "/usr/lib/python2.2/site-packages/twisted/protocols/telnet.py", line 237, in telnet_Password if not self.checkUserAndPass(self.username, paswd): File "mytelnetd.py", line 34, in checkUserAndPass self.factory.appl.killTelnet() File "mytelnetd.py", line 61, in killTelnet self.unlistenTCP(2000) File "/usr/lib/python2.2/site-packages/twisted/internet/app.py", line 444, in unlistenTCP if self._listenerDict.has_key((port_, interface_)): exceptions.UnboundLocalError: local variable 'port_' referenced before assignment [View Less]

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[Twisted-Python] Interface Inheritance (Ha ha METACLASS)
by Jp Calderone March 27, 2003

March 27, 2003

from twisted.python.components import Interface class InterfaceImplementor(type): def __new__(klass, name, bases, dict): realBases = [] faceBases = [] for b in bases: if isinstance(b, Interface): faceBases.append(b) elif hasattr(b, '__implements__'): faceBases.extend(b.__implements__) else: realBases.append(b) dict['… [View More]

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Re: [Twisted-Python] PyCon Logistics
by Laura Creighton March 26, 2003

March 26, 2003

Thank you very much for the hotel information. In return: sushi information! http://www.sushitaro.com/ Sushi Taro 1503 17th St., NW (P St.) Washington (202) 462-8999 It has been 2 years, but that was the best last time I was in D.C. Near Metro. Laura Creighton

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[Twisted-Python] ssl.py patch + example client /w server certificate verify
by Clark C. Evans March 26, 2003

March 26, 2003

Howdy. Thanks to those who helped me get this bootstrapped, so that others may find the task easier... here is an example of a client which has its own certificate, and verifies a known client certificate. from twisted.internet import reactor, protocol from twisted.protocols import http from twisted.internet import ssl class Client(http.HTTPClient): def connectionMade(self): print 'Connected.' self.sendCommand('GET', … [View More]"/") self.sendHeader('User-Agent', 'Twisted-Example') self.endHeaders() print 'Sent request.' def handleResponse(self, data): print 'Got response.' #print data def verifyCert(cert): return ssl.dumpCertificate(cert) == file("server.crt").read() def fetchURL(): print 'Connecting to.' context = ssl.DefaultOpenSSLContextFactory( "client.key","client.crt", verifyCallback = verifyCert) context.isClient = 1 factory = protocol.ClientFactory() factory.protocol = Client reactor.connectSSL('localhost', 8443, factory, context) if __name__ == '__main__': reactor.callLater(5,reactor.stop) reactor.callLater(1,fetchURL) reactor.run() Anyway, it's not the prettiest... in particular, why is there a separate class Default* ... could not this default behavior gone into the shorter ssl.ContextFactory? And... here is the patch to ssl.py --- ssl.py.orig Tue Mar 25 13:44:40 2003 +++ ssl.py Tue Mar 25 15:32:15 2003 @@ -36,7 +36,7 @@ """ # System imports -from OpenSSL import SSL +from OpenSSL import SSL, crypto import socket # sibling imports @@ -55,20 +55,32 @@ """Return a SSL.Context object. override in subclasses.""" raise NotImplementedError +def dumpCertificate(cert, filetype = crypto.FILETYPE_PEM ): + ''' a helper to dump an incoming cert as a PEM ''' + return crypto.dump_certificate(filetype, cert) class DefaultOpenSSLContextFactory(ContextFactory): def __init__(self, privateKeyFileName, certificateFileName, - sslmethod=SSL.SSLv23_METHOD): - self.privateKeyFileName = privateKeyFileName + sslmethod=SSL.SSLv23_METHOD, verifyCallback = None): + self.verifyCallback = (verifyCallback, ) + self.privateKeyFileName = privateKeyFileName self.certificateFileName = certificateFileName self.sslmethod = sslmethod self.cacheContext() + + def verifyCertificate(self, conn, cert, errno, depth, retcode): + cb = self.verifyCallback[0] + if cb: return cb(cert) + return 1 + def cacheContext(self): ctx = SSL.Context(self.sslmethod) ctx.use_certificate_file(self.certificateFileName) ctx.use_privatekey_file(self.privateKeyFileName) + if self.verifyCallback[0]: + ctx.set_verify(SSL.VERIFY_PEER, self.verifyCertificate) self._context = ctx def __getstate__(self): [View Less]

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[Twisted-Python] contribution - telnetd example
by David McNab March 25, 2003

March 25, 2003

Hi, Below is an example script that demonstrates usage of the telnet server. Submitted for possible inclusion in doc/examples Probably incorrect and ugly from a twisted veteran's perspective, but it's better than nothing. Cheers David

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[Twisted-Python] Re: [Twisted-commits] work in progress
by Itamar Shtull-Trauring March 25, 2003

March 25, 2003

On Tue, 25 Mar 2003 14:27:27 -0600 warner CVS <warner(a)twistedmatrix.com> wrote: > Modified files: > Twisted/twisted/spread/newjelly.py None 1.1 Use a branch, maybe? -- Itamar Shtull-Trauring http://itamarst.org/ http://www.zoteca.com -- Python & Twisted consulting

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[Twisted-Python] ANN: Eunuchs -- Missing manly parts of UNIX API for Python
by Tommi Virtanen March 25, 2003

March 25, 2003

At http://twistedmatrix.com/~tv/eunuchs/ and in Debian incoming. $ dpkg -s python-eunuchs Package: python-eunuchs Status: install ok installed Priority: optional Section: devel Installed-Size: 36 Maintainer: Tommi Virtanen <tv(a)debian.org> Source: eunuchs Version: 20030325.1 Depends: python, python-twisted, pwgen, python2.2-eunuchs Description: Missing manly parts of UNIX API for Python Eunuchs is a library of Python extension that complement the standard libraries in parts where … [View More]

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