[Zope] Accessing httplib from a Zope Python script

[Scott Burton]

Another couple problems you may run into... I have come across a similar
situation where I had to make an https connection from Zope. What I did
was to create a folder in bin/lib/ which contained my modules. I then
used an external method to call the modules. This worked but I started
running into some other problems. 
1. The socket connection took a long time to create, like about 1
second. Which isn't good for the volume of connections we are making. 
2. It is somehow tied into the Zope threads and if the connection is
taking a while and someone else executes another connection it would
completely hang Zope. I think it has to do with the user thread and it
reaching the thread limit of Zope. I have somewhat remedied this by
increasing the thread count on startup. If anyone else knows what it
could be feel free to chime in.

So, what I am attempting to do now is make all of it into a product. I
am also going to use the PThreads product to help with making it
thread-safe. 

If you are using windows you can install the dll's that enable you to do
https connections from Python, if you are on a *nix box, you can enable
ssl in python on the install.

I am also interested in what you come up with. Is it going to be an
open-source module? :)

Scott Burton





-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org] On Behalf Of
Dylan Reinhardt
Sent: Thursday, March 27, 2003 1:22 AM
To: Sean Winstead
Cc: zope@zope.org
Subject: Re: [Zope] Accessing httplib from a Zope Python script

On Thu, 2003-03-27 at 15:50, Sean Winstead wrote:

> Then I receive the following error when posting to the page:
> 
>   Error Type: Unauthorized
>   Error Value: You are not allowed to access HTTP in this context
> 

Ignore the issues with your script.  Your *real* problem is that PayPal
won't accept HTTP for this connection, you must use HTTPS.

Posting HTTPS from Zope is a bit more difficult, given that vanilla
Python 2.1 doesn't support SSL.  What you want is a library called
M2Crypto.  If you're on Windoze, you're in luck, b/c there are binaries
available... but if you're on Linux, you've got some compiling to do. 
(You'll need SWIG set up before you can compile M2Crypto.)  

See: http://www.zope.org/Members/dylanr/secure_post for hints on how to
proceed once you've got M2Crypto in place.

HTH,

Dylan


_______________________________________________
Zope maillist  -  Zope@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 )