def redirect_request(self, req, *args, **kwargs):
new_req = urllib2.HTTPRedirectHandler.redirect_request(
self, req, *args, **kwargs)
# Same thing as in our set_proxy implementation, but in this case
# we"ve only got a Request to work with, so it was this or copy
# everything over piecemeal.
#
# Note that we do not persist tunneling behavior from an http request
# to an https request, because an http request does not set _tunnel_host.
#
# Also note that in Python < 2.6, you will get an error in
# FancyHTTPSHandler.do_open() on an https urllib2.Request that uses an http
# proxy, since the proxy type will be set to http instead of https.
# (FancyRequest, and urllib2.Request in Python >= 2.6 set the proxy type to
# https.) Such an urllib2.Request could result from this redirect
# if you are redirecting from an http request (since an an http request
# does not have _tunnel_host set, and thus you will not set the proxy
# in the code below), and if you have defined a proxy for https in, say,
# FancyProxyHandler, and that proxy has type http.
if hasattr(req, "_tunnel_host") and isinstance(new_req, urllib2.Request):
if new_req.get_type() == "https":
if req._tunnel_host:
# req is proxied, so copy the proxy info.
new_req._tunnel_host = new_req.get_host()
new_req.set_proxy(req.host, "https")
else:
# req is not proxied, so just make sure _tunnel_host is defined.
new_req._tunnel_host = None
new_req.type = "https"
if hasattr(req, "_key_file") and isinstance(new_req, urllib2.Request):
# Copy the auxiliary data in case this or any further redirect is https
new_req._key_file = req._key_file
new_req._cert_file = req._cert_file
new_req._ca_certs = req._ca_certs
return new_req
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