Gecko [ fernandoquevedodop.com ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	0 B	-rw-r--r--
cache.py	8.03 KB	-rw-r--r--
clickjacking.py	1.66 KB	-rw-r--r--
common.py	7.28 KB	-rw-r--r--
csrf.py	13.47 KB	-rw-r--r--
gzip.py	2.09 KB	-rw-r--r--
http.py	1.59 KB	-rw-r--r--
locale.py	2.94 KB	-rw-r--r--
security.py	2.46 KB	-rw-r--r--

Code Editor : http.py

from django.utils.cache import (
    cc_delim_re, get_conditional_response, set_response_etag,
)
from django.utils.deprecation import MiddlewareMixin
from django.utils.http import parse_http_date_safe

class ConditionalGetMiddleware(MiddlewareMixin):
    """
    Handle conditional GET operations. If the response has an ETag or
    Last-Modified header and the request has If-None-Match or If-Modified-Since,
    replace the response with HttpNotModified. Add an ETag header if needed.
    """
    def process_response(self, request, response):
        # It's too late to prevent an unsafe request with a 412 response, and
        # for a HEAD request, the response body is always empty so computing
        # an accurate ETag isn't possible.
        if request.method != 'GET':
            return response

if self.needs_etag(response) and not response.has_header('ETag'):
            set_response_etag(response)

etag = response.get('ETag')
        last_modified = response.get('Last-Modified')
        last_modified = last_modified and parse_http_date_safe(last_modified)

if etag or last_modified:
            return get_conditional_response(
                request,
                etag=etag,
                last_modified=last_modified,
                response=response,
            )

return response

def needs_etag(self, response):
        """Return True if an ETag header should be added to response."""
        cache_control_headers = cc_delim_re.split(response.get('Cache-Control', ''))
        return all(header.lower() != 'no-store' for header in cache_control_headers)

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Code Editor : http.py