Mailman 3 April 2006 - Twisted-web

test failure of Nevow on Windows XP
by Manlio Perillo April 12, 2006

April 12, 2006

I have installed Nevow 0.8 with Twisted 2.2.0. I got: [FAIL]: nevow.test.test_json.JavascriptObjectNotationTestCase.testOrdinalRange File "F:\home\manlio\...\nevow\test\test_json.py", line 68, in testOrdinalRange twisted.trial.unittest.FailTest: ValueError not raised ('"\\ud800\\udc00"' returned) ------------------------------------------------------------------------------- Ran 538 tests in 20.297s FAILED (skips=7, expectedFailures=5, failures=1, successes=525) Moreover, the README, install section, contains an error: trial has no -v option. Sorry, but I have not tested the trunk version. Regards Manlio Perillo

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sending several Requests with one Connection
by Michael Niehues April 12, 2006

April 12, 2006

Hi, I'm using twisted.web and I've programmed a HTTP-client. Actually the Client opens a connection to the server for every HTTP-Request. But I don't want to close the connection for sending all requests over the same connection. Is this possible and what have I to do? kindly regards Michael Niehues

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Nevow future
by Manlio Perillo April 12, 2006

April 12, 2006

Hi. I have used Nevow a bit, when it was at 0.4 version. Now there seems to be a lot of changes, moreover twisted.web2 appears. What are the plane in the middle term for Nevow? It will closely integrate with twisted.web2? It will remain indipendent from the underlying web server? Now Nevow is realy only usable with twisted.web. Reverse Proxy is not an option for me (*why* to use two or more webservers and duplicate HTTP protocol handling?). Zonme is really safe to use? Why there is not support for FastCGI (so I can use lighttp)? Thanks and regards Manlio Perillo

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Re: [Twisted-web] online Nevow examples
by Manlio Perillo April 11, 2006

April 11, 2006

Carl Shimer ha scritto: > > you want http://divmod.org for the latest release and samples. the best > way is to download nevow 0.8 and the run the samples yourself. > Yes, but the online examples are good if I want to illustrate Nevow abilities to another person. Thanks and regards Manlio Perillo

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online Nevow examples
by Manlio Perillo April 11, 2006

April 11, 2006

Regards. It seems there are some problems with online Nevow examples at http://nevowexamples.adytum.us/ The test suits fails with a "Sorry, but I couldn't find the object you requested." db fails with a exceptions.NameError: global name 'cf' is not defined chatola does not work There exists some other site where to find updated and working examples? Thanks Manlio Perillo

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twisted.web and sharing class instances with CGI scripts
by Fabian Steiner April 11, 2006

April 11, 2006

Hello! I am currently working on a quite complicated application (at least for me) and unfortunately I don't know how to go on. I wrapped a Windows-dll by using the ctypes module so that I can access different functions that are used to control a network device (open, close, write/read values). Now I was asked to write something like a GUI for it which should be based on a CGI script that calls the different functions (read/write) with parameters entered in a text-input of a HTML-Template. Therefore I wrote a small HTTP-Server class based on twisted.web. In its constructor the network device is opened (--> the wrapper class is initiated) and is closed by the server's destructor. Now I need the same wrapper class instance in my CGI script so that read() and write() can be called on exactly the same instance - otherwise these methods would fail since the network device hasn't been opened so far. Do you have any idea how to solve this problem? I am looking forward to any responses. Cheers, Fabian

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HTML Tidy and Stan
by Moof April 10, 2006

April 10, 2006

Hiya, Being relatively new to nevow, I'm findint it a bit of a challenge to get to grips with. Of late, I've been wantign to look at some of the generated HTML from the pages I'm producing in my application, and I find stan's "run it all together" approach a bit confusing to read, so I've been putting the result through HTML tidy manually. I then tried to work out how to get nevow to do it automatically, and the only way I've found it by overriding the finisher in rend.Page._renderHTTP for when self.buffered is true. This makes me uneasy, for obvious reasons, and I'm wondering: * Is there a saner place to put a filter such as HTML tidy? * Is there a way to get stan to pretty-print its output? Thanks in advance, Moof

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CGI is not working on windows
by Fabian Steiner April 9, 2006

April 9, 2006

Hello! I have written a very small HTTP-Server with CGI-support based on twisted.web and twisted.web.twcgi. Everything works fine on Linux, but whenever I want my twisted web server to serve a Python-CGI script on Windows XP I get the following error: pywintypes.error: (193, 'CreateProcess', '%1 ist keine zul\xe4ssige Win32-Anwendung.') <http://localhost:81/cgi-bin/request.py#tbend> (saying that %1 is not a valid win32 application) In fact, I don't know what I did wrong, my HttpServer.py looks like this: import sys from twisted.internet import reactor from twisted.web import static, server, twcgi import config class HttpServer(object): def __init__(self, htdocs, directory_indexes=None): directory_indexes = None or directory_indexes self.HttpServer = static.File(htdocs) self.HttpServer.indexNames = ['index.html', 'index.htm', 'start.html', 'start.htm'] if directory_indexes is not None: self.HttpServer.indexNames.extend([index_name for index_name in directory_indexes]) self.HttpServer.putChild('cgi-bin', twcgi.CGIDirectory(config.CGI_DIR)) self.HttpServer.processors = {'.py': PythonScript} def run(self, port): reactor.listenTCP(port, server.Site(self.HttpServer)) reactor.run() class PythonScript(twcgi.FilteredScript): filter = r'"C:\Python24\python.exe -u"' if __name__ == '__main__': http = HttpServer(config.HTDOCS_DIR) try: http.run(81) except: print 'Can\'t start server. Aborting!' sys.exit(1) The Python-CGI-Script which should be served to the client is a simple "Hello world!" script which runs in the console when called directly. What did I do wrong? Any hints? Cheers, Fabian

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[Twisted-Python]How to display python script output and php path
by Normand Savard April 8, 2006

April 8, 2006

I'm using an existing twisted python script to serve my Web pages (see below) on Linux. When I set the URL to point to a python script (see example below), the script executes well. I see the output result in the shell window but nothing is shown in the browser window. Could you point me out what is missing in this script to display the output of a script? I looked in the mailing list archive and could not find my answer. And how could I change the filter path to the php executable. Actually the path is set to "/usr/bin/php4" and I want to set it to "/usr/local/bin/php". Thanks. ------------------------------------------------------ Script: import sys if sys.platform == 'win32': from twisted.internet import win32eventreactor win32eventreactor.install() from twisted.python import log from twisted.internet import reactor from twisted.web import static, server, twcgi, script, xmlrpc, resource from twisted.internet import utils import os import Interpreter import Dispatcher def main(): log.startLogging(sys.stdout) print "Starting up Selenium Server..." root = resource.Resource() # The proxy server (aka "The Funnel") if sys.platform == 'win32': path = os.path.join(os.getcwd(),"cgi-bin","nph-proxy.exe") else: path = os.path.join(os.getcwd(),"cgi-bin","nph-proxy.cgi") proxy = twcgi.CGIScript(path) root.putChild("AUT",proxy) #The followoing are all available from /selenium-driver/ # * Selenium BrowserBot html, css, and javascript (/selenium-driver/*) # * Selenese driver (/selenium-driver/driver/) # * XML-RPC listener (/selenium-driver/RP2/) driver = static.File("./selenium_driver") driver.ignoreExt('.rpy') driver.indexNames=['index.rpy'] driver.processors = {'.rpy': script.ResourceScript, '.php': twcgi.PHPScript, '.py': script.PythonScript} root.putChild('selenium-driver', driver) reactor.listenTCP(10001, server.Site(root)) reactor.run() if __name__ == '__main__': main() --------------------------- Example of script: #!/usr/bin/env python print 'Allo' [

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A great discussion...
by Nicola Larosa April 6, 2006

April 6, 2006

...by two Lisp guys about web architectural styles, continuations and REST: Re: Web application design: the REST of the story http://common-lisp.net/project/ucw/docs/html/rest/rest.html -- Nicola Larosa - http://www.tekNico.net/ Big problems are terrifying. There's an almost physical pain in facing them . It's like having a vacuum cleaner hooked up to your imagination. All your initial ideas get sucked out immediately, and you don't have any more, and yet the vacuum cleaner is still sucking. -- Paul Graham, December 2005

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