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AW: [Zope] Cookieless Session Management
by Germer, Carsten 09 Apr '03

09 Apr '03

Hi there, just a quick note on the subject. Cookieless session management can store the session ID in hidden form elements, URL insertions, it can use referer, browserversion and IP-address, etc. and mix all these to track the session/user. I know ZOPE CookielessSession uses URL insertions, not sure if it uses the other tricks as well. The problem with cookieless session management in general is that it's less reliable. If you use cookies you got em or not. If you use the other techniques you _might_ run into a bunch of strange problems. URL-Insertion with Flash or Javascript? Not always possible. IP-tracking with more then one user behind a NAT-Router? Hardly. Users browsing your site with two instances of the same browser on their desktop? Bummer. I don't love cookies very much myself but if you run a site which may have things like Flash or Javascript and especially if you run applications that need to rely heavily on the session management (Shopping, complex administration, login via form and not popup, etc.) I would strongly advise to use cookies unless you know exactly what you're site is doing and how. Not really that much Zope but I hope this helps :) /Gem > > On Mon, 2003-04-07 at 18:31, hpinson(a)indepthl.com wrote: > > Hi Chris-- thanks for the reference. > > > > Is there some drawback to using a session model that stores session > > information in server memory (CookielessSession) as opposed > to a URL- > > based" sessioning mechanism, like Zope uses? > > Somehow state needs to be kept between requests to implement > sessioning. (each request to an HTTP server is "fresh", no state is > kept between them, this is why cookies are often used for sessioning > because they implement a means of tracking state between requests). > > I'm not sure how CookielessSession does this, but if it doesn't use > cookies, it likely either uses query strings, hidden form elements, or > URL insertions just like the stock Zope sessioning stuff. > > > I don't know if you or anyone else has experience with the > > CookielessSession Product-- it seems to much easier to use than > > Zope's mechanism. It has not failed after two projects > (light usage > > only). > > No, sorry, I don't have any experience with it. If it works for you, > I'd say use it! > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) >

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java crashes zope
by Lester Cram 09 Apr '03

09 Apr '03

I have a small applet compiled under sun java which works when tested on local disk. When trying to run it after uploding it to zope, java asks for reconfirmation of username and password and then crashes zope and sometimes my client pc. If I restart zope (with webmin) and reconnect to the site I am again asked for user and password by java but this time the applet runs perfectly. Is this a bug in this version of java or is there another reason???? Any thoughts appreciated

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Patch to check all pages with html-tidy
by Thomas Guettler 09 Apr '03

09 Apr '03

Hi! Maybe someone is interested in this patch: If you have html-tidy[1] installed, you can apply this patch to lib/python/ZPublisher/HTTPResponse.py to scan every html page with html tidy. Warnings of html-tidy will be displayed in the debug logs. [1]: http://tidy.sourceforge.net/ You apply this patch like this: cd zope/lib/python/ZPublisher cat html-tidy-patch.txt | patch thomas -- Thomas Guettler <guettli(a)thomas-guettler.de> http://www.thomas-guettler.de

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CallProfiler with filesystem objects
by Heimo Laukkanen 09 Apr '03

09 Apr '03

Hi, I've noticed that CallProfiler seems not to work with filesystem objects that are used through FileSystemDirectory view. Does anyone know whether there are any patches or updates to the CallProfiler that would make 'em work? Traceback below: equest URL http://localhost:8080/Control_Panel/CallProfiler/results Exception Type KeyError Exception Value Filesystem DTML Method Traceback (innermost last): * Module ZPublisher.Publish, line 98, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 39, in call_object * Module App.special_dtml, line 61, in __call__ * Module DocumentTemplate.DT_String, line 474, in __call__ * Module DocumentTemplate.DT_Util, line 201, in eval __traceback_info__: this * Module <string>, line 0, in ? * Module App.special_dtml, line 61, in __call__ * Module DocumentTemplate.DT_String, line 474, in __call__ * Module DocumentTemplate.DT_With, line 61, in render * Module DocumentTemplate.DT_Util, line 201, in eval __traceback_info__: tid * Module <string>, line 0, in ? * Module Products.CallProfiler.CallProfiler, line 331, in detailResults -huima

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Deleting several items from BTrees
by Thomas Guettler 09 Apr '03

09 Apr '03

Hi! I had problems to delete all entries from a BTree. The working code is now: (self.objects is a BTreeFolder2) def deleteAllObjects(self): "docstring" keys=[] for k in self.objects.keys(): keys.append(k) len_keys=len(keys) i=0 for k in keys: self.objects[k].deleteObject() i+=1 ret=[] ret.append(self.standard_html_header()) ret.append("All objects where deleted %s %s" % (len_keys, i)) ret.append(self.standard_html_footer()) return ''.join(ret) This does not work: for k in self.objects.values(): k.deleteObject() # k gets deleted from self.objects since deleting while iterating does not work. This code does not look very nice. Is there a better way? It would be nice to use just on loop. thomas -- Thomas Guettler <guettli(a)thomas-guettler.de> http://www.thomas-guettler.de

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tree help!
by michael.ta�ag 09 Apr '03

09 Apr '03

Hi! how come this doesn't work i pass this the variable fold with the url "http://www.somelink.com/treeview.html?fold=month" . . . <dtml-tree fold branches_expr="objectValues(['Folder', 'File'])"> <dtml-if "meta_type=='Folder'"> <IMG SRC="<dtml-var icon>" BORDER=0> <dtml-var title> <dtml-else> <A HREF="<dtml-var tree-item-url>" target="_blank"><IMG SRC="<dtml-var icon>" BORDER=0> <dtml-var id></A> </dtml-if> </p> </dtml-tree> __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - File online, calculators, forms, and more http://tax.yahoo.com

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Import Error after upgrading Zope 2.6.x
by Shashank Ashtikar 09 Apr '03

09 Apr '03

Hi EveryOne, We recently upgraded zope on our server from 2.5.x to 2.6.x, after upgradation one of the products started giving an Import Error for module iClass. This error is coming from a folder. There are no ZClasses defined in the product, hence usual solution of emptying the subobjects tab is not feasible here (atleast I think so). The name of the product is Volunteer product. What this product does is,it allows users to register with a web site. For every user a folder is created the information that user enters while registering with the website is stored as properties of his folder. All these member folders are stored in a seperate folder called "Members". It's this "Members" Folder that is giving the Import Error. Also some of the folders inside "Members" folder are giving an error saying doc string of the object is empty etc. All the folders are ordinary folders which are added using the "manage_addFolder" function We managed to restore the website by switching back to Zope 2.5.x but don't want to stay with it for long. Awaiting your response. Thanks in Advance Shashank Ashtikar

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Re: Some Q about Zope under Linux
by Josef Meile 09 Apr '03

09 Apr '03

--- In zope(a)yahoogroups.com, J Cameron Cooper <jccooper@j...> wrote: > > 3. Can I move my files from ZOPE under Linux to ZOPE under Windows > > without any configuration? > > > Almost always. The CMF in the past has has some issues with this with > regard to skins, and some products have platform dependancies. But > non-core products aside, yes. This comment calls my attention. I haven't tried to run my CMF site under windoze since a long time ago. It means that the problems with the paths (slash, backslash) is solved in the new versions? PS: I know this isn't the list, but he mentioned CMF, sorry. Regards, Josef.

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ZODB drops _v_ attributes.
by ZOPE Developer 09 Apr '03

09 Apr '03

Hi. I use the standalone ZODB. When I create persistent objects containing _v_ (volatile attributes), and access them at an extremely high rate(reading and using), they sometimes lose their _v_ attibutes. This occures at random intervals, and can be reproduced. After a few seconds of operation, I suddenly get an error like: ============================================================ Traceback (most recent call last): File "C:\Development\Module.py", line 220, in remPacket self._v_messages.loopMembersWithIds(packet.getMessageIds(), self._delivered) AttributeError: _v_messages ============================================================ The object containing the _v_messages worked fine prior to the error. Can somebody tell me what I need to do the avoid this? Herman. == Download ringtones, logos and picture messages at Ananzi Mobile Fun. http://www.ananzi.co.za/cgi-bin/goto.pl?mobile

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zope.org main page proxy error
by admin2 08 Apr '03

08 Apr '03

:) Proxy Error The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /. Reason: Could not connect to remote machine: Connection refused Additionally, a 502 Bad Gateway error was encountered while trying to use an ErrorDocument to handle the request. Apache/1.3.12 Server at www.zope.org Port 80 -- Net Enabled (http://www.enabled.com)

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