Mercurial > hg > nginx-quic
view contrib/geo2nginx.pl @ 5935:1573fc7875fa
Cache: send conditional requests only for cached 200/206 responses.
RFC7232 says:
The 304 (Not Modified) status code indicates that a conditional GET
or HEAD request has been received and would have resulted in a 200
(OK) response if it were not for the fact that the condition
evaluated to false.
which means that there is no reason to send requests with "If-None-Match"
and/or "If-Modified-Since" headers for responses cached with other status
codes.
Also, sending conditional requests for responses cached with other status
codes could result in a strange behavior, e.g. upstream server returning
304 Not Modified for cached 404 Not Found responses, etc.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author | Piotr Sikora <piotr@cloudflare.com> |
---|---|
date | Wed, 26 Nov 2014 18:35:37 -0800 |
parents | c9ad0d9c7d59 |
children |
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#!/usr/bin/perl -w # (c) Andrei Nigmatulin, 2005 # # this script provided "as is", without any warranties. use it at your own risk. # # special thanx to Andrew Sitnikov for perl port # # this script converts CSV geoip database (free download at http://www.maxmind.com/app/geoip_country) # to format, suitable for use with nginx_http_geo module (http://sysoev.ru/nginx) # # for example, line with ip range # # "62.16.68.0","62.16.127.255","1041253376","1041268735","RU","Russian Federation" # # will be converted to four subnetworks: # # 62.16.68.0/22 RU; # 62.16.72.0/21 RU; # 62.16.80.0/20 RU; # 62.16.96.0/19 RU; use warnings; use strict; while( <STDIN> ){ if (/"[^"]+","[^"]+","([^"]+)","([^"]+)","([^"]+)"/){ print_subnets($1, $2, $3); } } sub print_subnets { my ($a1, $a2, $c) = @_; my $l; while ($a1 <= $a2) { for ($l = 0; ($a1 & (1 << $l)) == 0 && ($a1 + ((1 << ($l + 1)) - 1)) <= $a2; $l++){}; print long2ip($a1) . "/" . (32 - $l) . " " . $c . ";\n"; $a1 += (1 << $l); } } sub long2ip { my $ip = shift; my $str = 0; $str = ($ip & 255); $ip >>= 8; $str = ($ip & 255).".$str"; $ip >>= 8; $str = ($ip & 255).".$str"; $ip >>= 8; $str = ($ip & 255).".$str"; }