Method set_headers_for_cache_write

src/proxy/http/HttpTransact.cc:4931–4989

}

void
HttpTransact::set_headers_for_cache_write(State *s, HTTPInfo *cache_info, HTTPHdr *request, HTTPHdr *response)
{
  URL *temp_url;
  ink_assert(request->type_get() == HTTP_TYPE_REQUEST);
  ink_assert(response->type_get() == HTTP_TYPE_RESPONSE);

  if (!cache_info->valid()) {
    cache_info->create();
  }

  /* Store the requested URI */
  //  Nasty hack. The set calls for
  //  marshalled types current do handle something being
  //  set to itself.  Make the check here for that case.
  //  Why the request url is set before a copy made is
  //  quite beyond me.  Seems like a unsafe practice so
  //  FIX ME!

  // Logic added to restore the original URL for multiple cache lookup
  // and automatic redirection
  if (s->redirect_info.redirect_in_process) {
    temp_url = &s->redirect_info.original_url;
    ink_assert(temp_url->valid());
    request->url_set(temp_url);
  } else if ((temp_url = &(s->cache_info.original_url))->valid()) {
    request->url_set(temp_url);
  } else if (request != &s->hdr_info.client_request) {
    request->url_set(s->hdr_info.client_request.url_get());
  }
  cache_info->request_set(request);
  /* Why do we check the negative caching case? No one knows. This used to assert if the cache_info
     response wasn't already valid, which broke negative caching when a transform is active. Why it
     wasn't OK to pull in the @a response explicitly passed in isn't clear and looking at the call
     sites yields no insight. So the assert is removed and we keep the behavior that if the response
     in @a cache_info is already set, we don't override it.
  */
  if (!s->is_cacheable_due_to_negative_caching_configuration || !cache_info->response_get()->valid()) {
    cache_info->response_set(response);
  }

  if (s->api_server_request_body_set) {
    cache_info->request_get()->method_set(HTTP_METHOD_GET, HTTP_LEN_GET);
  }

  // Set-Cookie should not be put in the cache to prevent
  //  sending person A's cookie to person B
  cache_info->response_get()->field_delete(MIME_FIELD_SET_COOKIE, MIME_LEN_SET_COOKIE);
  cache_info->request_get()->field_delete(MIME_FIELD_VIA, MIME_LEN_VIA);
  // server 200 Ok for Range request
  cache_info->request_get()->field_delete(MIME_FIELD_RANGE, MIME_LEN_RANGE);

  // If we're ignoring auth, then we don't want to cache WWW-Auth headers
  if (s->txn_conf->cache_ignore_auth) {
    cache_info->response_get()->field_delete(MIME_FIELD_WWW_AUTHENTICATE, MIME_LEN_WWW_AUTHENTICATE);
  }

  dump_header(dbg_ctl_http_hdrs, cache_info->request_get(), s->state_machine_id(), "Cached Request Hdr");