| def main(request, response): | |
| """Handler that causes multiple redirections. | |
| The request has two mandatory and one optional query parameters: | |
| page_origin - The page origin, used for redirection and to set TAO. This is a mandatory parameter. | |
| cross_origin - The cross origin used to make this a cross-origin redirect. This is a mandatory parameter. | |
| timing_allow - Whether TAO should be set or not in the redirect chain. This is an optional parameter. Default: not set. | |
| Note that |step| is a parameter used internally for the multi-redirect. It's the step we're at in the redirect chain. | |
| """ | |
| step = 1 | |
| if "step" in request.GET: | |
| try: | |
| step = int(request.GET.first("step")) | |
| except ValueError: | |
| pass | |
| page_origin = request.GET.first("page_origin") | |
| cross_origin = request.GET.first("cross_origin") | |
| timing_allow = "0" | |
| if "timing_allow" in request.GET: | |
| timing_allow = request.GET.first("timing_allow") | |
| redirect_url = "/resource-timing/resources/multi_redirect.py?" | |
| redirect_url += "page_origin=" + page_origin | |
| redirect_url += "&cross_origin=" + cross_origin | |
| redirect_url += "&timing_allow=" + timing_allow | |
| redirect_url += "&step=" | |
| if step == 1: | |
| redirect_url = cross_origin + redirect_url + "2" | |
| if timing_allow != "0": | |
| response.headers.set("timing-allow-origin", page_origin) | |
| elif step == 2: | |
| redirect_url = page_origin + redirect_url + "3" | |
| if timing_allow != "0": | |
| response.headers.set("timing-allow-origin", page_origin) | |
| else: | |
| redirect_url = page_origin + "/resource-timing/resources/blank_page_green.htm" | |
| response.status = 302 | |
| response.headers.set("Location", redirect_url) |