[twill] wsgi_intercept, https and twill

Robert Leftwich twill at rtl.fmailbox.com
Mon Jan 7 10:13:37 PST 2008

On Mon, 7 Jan 2008 11:19:15 -0600, "Kumar McMillan"
<kumar.mcmillan at gmail.com> said:
> yes, I'd like to add a section for that but I haven't had time to sit
> down with a default install of twill to try and get it working.  If
> you get anything working, please let me know how!

Well, I have something that appears to work.... but is messy/fragile.

Firstly, I installed the latest wsgi_intercept and mechanize. The
install of mechanize also installs clientform v0.2,7.
I then moved the mechanize directory and ClientForm.py from
twill/other_packages to a safe place.

After this some twill tests ran ok but nothing form related worked, so I
replaced ClientForm.py in the ClientForm-0.2.7-py2.5.egg directory with
the older version from twill and the forms worked again.

However, nothing https related was working yet (i.e. the original
problem). Editing twill/_browser,py to add support for https, as shown
below, appears to work in limited testing:

class MyHTTPHandler(HTTPHandler):
        def http_open(self, req):
            return self.do_open(wsgi_intercept.WSGI_HTTPConnection, req)

        https_open = http_open

    return MyHTTPHandler

class PatchedMechanizeBrowser(MechanizeBrowser):
    A patched version of the mechanize browser class.  Currently
    installs the WSGI intercept handler & fixes a problem with
    mechanize/urllib2 Basic Authentication.
    def __init__(self, *args, **kwargs):
        # install WSGI intercept handler.
        self.handler_classes['http'] = build_http_handler()
        self.handler_classes['https'] = build_http_handler()

Of course, being new to the internals of twill this may not be complete,
but so far so good.... by some definition of good :-)


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