Do the actual action of proxying the call.

def _proxy(self, url, urlparams=None):
        """Do the actual action of proxying the call.
        """
        for k,v in request.params.iteritems():
            urlparams[k]=v
        query = urlencode(urlparams)
        full_url = url
        if query:
            if not full_url.endswith("?"):
                full_url += "?"
            full_url += query

        # build the request with its headers
        req = urllib2.Request(url=full_url)
        for header in request.headers:
            if header.lower() == "host":
                req.add_header(header, urlparse.urlparse(url)[1])
            else:
                req.add_header(header, request.headers[header])
        res = urllib2.urlopen(req)

        # add response headers
        i = res.info()
        response.status = res.code
        got_content_length = False
        for header in i:
            # We don't support serving the result as chunked
            if header.lower() == "transfer-encoding":
                continue
            if header.lower() == "content-length":
                got_content_length = True
            response.headers[header] = i[header]

        # return the result
        result = res.read()
        res.close()

        #if not got_content_length:
        #    response.headers['content-length'] = str(len(result))
        return result