Mailman 3 February 2004 - Twisted-web

Test
by Philippe Lafoucrière 06 Aug '21

06 Aug '21

Hi all just a test

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Re: [Nevow-commits] Generate ids for form elements and use it to relate labels to form inputs.
by James Y Knight 29 Feb '04

29 Feb '04

On Feb 28, 2004, at 7:12 PM, mg CVS wrote: > Modified files: > Nevow/nevow/freeform.py 1.22 1.23 > Nevow/nevow/test/test_freeform.py 1.10 1.11 > > Log message: > Generate ids for form elements and use it to relate labels to form > inputs. Why doesn't this use context.key (+ a suffix perhaps) instead of a newly generated arbitrary number? James

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Can someone translate this, please?
by Phil Hunt 27 Feb '04

27 Feb '04

I am trying to get my head round Twisted, particularly to use it as a simple web server (using http as a RPC mechanism, really). I was thinknig of using a "Rosetta Stone" approach, and am wondering if someone could translate this ordinary Python program into Twisted, please: ===================================================================== # simple_http.py = a simple http server import SimpleHTTPServer import BaseHTTPServer import StringIO template = """<html> <head> <title>%(title)s</title> </head><body> <h1>%(title)s</h1> <p>Path is [<tt>%(path)s</tt>] </body></html> """ portNum = 1450 class MyRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): def do_GET(self): args = { 'title': 'simple_http.py', 'path': self.path } result = template % args self.send_response(200) self.send_header("Content-type", "text/html") self.send_header("Content-Length", str(len(result))) self.end_headers() f = StringIO.StringIO() f.write(result) f.seek(0) self.copyfile(f, self.wfile) f.close() print "===== starting simple_http.py on port %d =====" % portNum server_address = ('', portNum) httpd = BaseHTTPServer.HTTPServer(server_address, MyRequestHandler) httpd.serve_forever() #end ===================================================================== As you can see, it's very simple. When it recieves a GET request it just sends back an HTML page saying what the path in the GET request was. -- Phil Hunt, phil.hunt(a)tech.mrc.ac.uk

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New Nevow stuff
by James Y Knight 26 Feb '04

26 Feb '04

(this is all old news to people who hang out in #twisted.web, but I thought I'd update everyone who doesn't.) Nevow has got its own repository going now, and isn't dependent upon quotient and atop anymore. Check it out with: cvs -z6 -d :pserver:anon@divmod.org:/cvs checkout Nevow The Wiki has moved and is now at: http://divmod.org/users/wiki.twistd/nevow/moin.cgi There is a new mailing list nevow-commits: http://divmod.org/users/mailman.twistd/listinfo/nevow-commits The commits also show up on a nice webpage generated by StatCVS: http://divmod.org/users/foom/statcvs/Nevow/ James

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server crashes
by stephan 25 Feb '04

25 Feb '04

I am almost done with my web app. Now just before finalizing the project I noticed that when I request two pages at the same time (e.g. double clicking on a link) my app including twisted just exits. I am almost certain that this behavior has something to do with the fact that I put every request in a seperate thread. My render methode looks pretty much like this: def render(self, request): threads.deferToThread(handleRequest, request).addCallback(\ writeRequestAndFinish, request).addErrback(\ request.processingFailed) return server.NOT_DONE_YET Any idea why this does not work? Do you think there is a problem with accessing the request variable from a different thread? _stephan

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Ping
by James Y Knight 25 Feb '04

25 Feb '04

I sent a mail to the ML yesterday but it doesn't seem to have shown up...trying again... James

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fcgi.py
by Thomas Mangin 22 Feb '04

22 Feb '04

That way you can have some part of the site still served by apache if you need. This example serve all page through twisted. <VirtualHost *:80> # This virtual host is simply a proxy of the twisted-matrix # woven based site running on local port 8080 ServerName www.exa-networks.co.uk RewriteEngine On RewriteRule ^(.+)$ http://127.0.0.1:8080$1 [P] ProxyVia Block # Maintain logging as twistd only sees local proxy requests CustomLog logs/exasite-access.log combined ErrorLog logs/exasite-error.log </VirtualHost> Thomas

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LiveEvil output buffer patch
by Justin Johnson 18 Feb '04

18 Feb '04

Here's a patch to add script buffering to liveevil.py. One additional change is needed, but I'm not sure where to put it. self.output needs to be reset to None when the connection is closed. Currently I'm getting around this by using liveevil as the mind and setting mind.output = None in my render_ method where I know I can reset it before using liveevil again. Anyone have any ideas for a better place to reset this? Index: liveevil.py =================================================================== RCS file: /cvs/Quotient/nevow/liveevil.py,v retrieving revision 1.2 diff -u -r1.2 liveevil.py --- liveevil.py 26 Jan 2004 18:30:12 -0000 1.2 +++ liveevil.py 17 Feb 2004 19:19:41 -0000 @@ -38,11 +38,16 @@ # TODO set up an event hub self.events = events.EventNotification() self.hookupNotifications = [] + self.outputBuffer = [] def hookupOutput(self, output, finisher = None): #print "output hooked up." self.output = output self.finisher = finisher + for buf in self.outputBuffer: + output(buf) + #print "Sent buffered item: ", buf + self.outputBuffer = [] for notify in self.hookupNotifications: notify(self) @@ -51,9 +56,11 @@ def sendScript(self, script): if self.output: + #print "output sent!", script self.output(script) else: - print "output ignored!", script + self.outputBuffer.append(script) + #print "output buffered!", script def handleInput(self, identifier, *args): #self.sendScript(input)

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How to upload files using HTML forms?
by Frantisek Fuka 16 Feb '04

16 Feb '04

Sorry about the confusion, I didn't make myself clear. I can see the CONTENTS of the uploaded files in request.args, but where do I find the FILENAMES under which they were uploaded? -- Frantisek Fuka (yes, that IS my real name) (and it's pronounced "Fran-tjee-shek Foo-kah") ---------------------------------------------------- My E-mail: fuka(a)fuxoft.cz My Homepage: http://www.fuxoft.cz My ICQ: 2745855

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twisted.internet.error.CannotListenError
by Peter Stradinger 16 Feb '04

16 Feb '04

Hi, I'm fairly new to Twisted and trying to get a twisted reactor to work with wxPython. I'm trying the perspective broker examples, and when I try to do: def OnFileitems0Menu(self, event): self.Close(true) reactor.stop() It shuts down the program fine, but then when I try to run it again I get: twisted.internet.error.CannotListenError: Couldn't listen on any:8800: (10048, 'Address already in use'). As an error. I can manually stop the process and then it will work again, but I don't know how to release the port when I shut down the program. Am I missing something obvious? A search of the archives hasn't shown me any way out. Peter __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html

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Twisted-web February 2004