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default.vcl
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default.vcl
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backend mweb {
.host = "mweb";
.port = "4444";
}
/* backend www {
.host = "www.reddit.com";
.port = "80";
} */
sub vcl_recv {
call device_detect;
# Check mweb override cookie.
if (req.http.Cookie ~ "(^|;\s*)(mweb-no-redirect=1)(;|$)") {
call set_www_backend;
} elsif (
(req.http.X-UA-Device ~ "^mobile-" || req.http.X-UA-Device ~ "^tablet-")
# We don't host endpoints with extensions in mweb.
# The Fastly equivalent is: && !req.url.ext
&& !reg.url ~ "\/.+\.[a-z]{3,4}(\?.*|$)"
&& (
# Blacklisted endpoints
req.url !~ "\.json$"
&& (
# Whitelisted 2X endpoints from router/index.js
req.url == "/"
|| req.url ~ "^/actions/"
|| req.url ~ "^/comments/?"
|| req.url ~ "^/login/?$"
|| req.url ~ "^/message/"
|| req.url ~ "^/r/"
|| req.url ~ "^/register/?$"
|| req.url ~ "/search/?$"
|| req.url ~ "/submit/?$"
|| req.url ~ "^/submit/to_community/?$"
|| req.url ~ "^/u/"
|| req.url ~ "^/user/"
|| req.url ~ "^/(help|w|wiki)/?"
# Whitelisted 2X Ajax endpoints
|| req.url ~ "^/csp-report$"
|| req.url == "/error"
|| req.url ~ "^/(login|refresh|register)proxy$"
|| req.url ~ "^/logout"
|| req.url == "/routes"
|| req.url ~ "^/timings"
|| req.url ~ "^/(u/)?XXX\?.*"
# Whitelisted dev endpoints (these will be hosted on www in production)
|| req.url == "/apple-app-site-association"
|| req.url ~ "^/favicon/"
|| req.url ~ "^/favicon\.ico"
|| req.url ~ "^/fonts/"
|| req.url == "/health"
|| req.url ~ "^/img/"
|| req.url ~ "^/ProductionClient\..*\.(css|js)$"
|| req.url == "/robots.txt"
)) {
# If it's a mobile device and a whitelisted endpoint, use mweb.
set req.backend = mweb;
} else {
call set_www_backend;
}
}
sub set_www_backend {
# NOTE(wting|2016-09-26): Normally we would redirect the user to a different
# backend, but instead we're using a 400 status code for easy programmatic testing.
error 400;
# set req.backend = www;
}
# Vendorized from https://github.com/varnish/varnish-devicedetect/blob/master/devicedetect.vcl
# BSD-2 License
sub device_detect {
unset req.http.X-UA-Device;
set req.http.X-UA-Device = "pc";
# Handle that a cookie may override the detection alltogether.
if (req.http.Cookie ~ "(?i)X-UA-Device-force") {
/* ;?? means zero or one ;, non-greedy to match the first. */
set req.http.X-UA-Device = regsub(req.http.Cookie, "(?i).*X-UA-Device-force=([^;]+);??.*", "\1");
/* Clean up our mess in the cookie header */
set req.http.Cookie = regsuball(req.http.Cookie, "(^|; ) *X-UA-Device-force=[^;]+;? *", "\1");
/* If the cookie header is now empty, or just whitespace, unset it. */
if (req.http.Cookie ~ "^ *$") {
unset req.http.Cookie;
}
} else {
if (req.http.User-Agent ~ "\(compatible; Googlebot-Mobile/2.1; \+http://www.google.com/bot.html\)"
|| (req.http.User-Agent ~ "(Android|iPhone)"
&& req.http.User-Agent ~ "\(compatible.?; Googlebot/2.1.?; \+http://www.google.com/bot.html")
|| (req.http.User-Agent ~ "(iPhone|Windows Phone)"
&& req.http.User-Agent ~ "\(compatible; bingbot/2.0; \+http://www.bing.com/bingbot.htm")
) {
set req.http.X-UA-Device = "mobile-bot";
} elsif (req.http.User-Agent ~ "(?i)(ads|google|bing|msn|yandex|baidu|ro|career|seznam|)bot"
|| req.http.User-Agent ~ "(?i)(baidu|jike|symantec)spider"
|| req.http.User-Agent ~ "(?i)scanner"
|| req.http.User-Agent ~ "(?i)(web)crawler"
) {
set req.http.X-UA-Device = "bot";
} elsif (req.http.User-Agent ~ "(?i)ipad") {
set req.http.X-UA-Device = "tablet-ipad";
} elsif (req.http.User-Agent ~ "(?i)ip(hone|od)") {
set req.http.X-UA-Device = "mobile-iphone";
} elsif (req.http.User-Agent ~ "(?i)android.*(mobile|mini)") {
/* how do we differ between an android phone and an android tablet? */
/* http://stackoverflow.com/questions/5341637/how-do-detect-android-tablets-in-general-useragent */
set req.http.X-UA-Device = "mobile-android";
}
elsif (req.http.User-Agent ~ "(?i)android 3") {
/* https://github.com/varnish/varnish-devicedetect/blob/master/devicedetect.vcl */
set req.http.X-UA-Device = "tablet-android";
} elsif (req.http.User-Agent ~ "Opera Mobi") {
/* Opera Mobile */
set req.http.X-UA-Device = "mobile-smartphone";
}
elsif (req.http.User-Agent ~ "(?i)android") {
/* May very well give false positives towards android tablets. Suggestions welcome. */
set req.http.X-UA-Device = "tablet-android";
} elsif (req.http.User-Agent ~ "PlayBook; U; RIM Tablet") {
set req.http.X-UA-Device = "tablet-rim";
} elsif (req.http.User-Agent ~ "hp-tablet.*TouchPad") {
set req.http.X-UA-Device = "tablet-hp";
} elsif (req.http.User-Agent ~ "Kindle/3") {
set req.http.X-UA-Device = "tablet-kindle";
} elsif (req.http.User-Agent ~ "Touch.+Tablet PC" || req.http.User-Agent ~ "Windows NT [0-9.]+; ARM;" ) {
set req.http.X-UA-Device = "tablet-microsoft";
} elsif (req.http.User-Agent ~ "Mobile.+Firefox") {
set req.http.X-UA-Device = "mobile-firefoxos";
} elsif (req.http.User-Agent ~ "^HTC"
|| req.http.User-Agent ~ "Fennec"
|| req.http.User-Agent ~ "IEMobile"
|| req.http.User-Agent ~ "BlackBerry"
|| req.http.User-Agent ~ "BB10.*Mobile"
|| req.http.User-Agent ~ "GT-.*Build/GINGERBREAD"
|| req.http.User-Agent ~ "SymbianOS.*AppleWebKit") {
set req.http.X-UA-Device = "mobile-smartphone";
}
elsif (req.http.User-Agent ~ "(?i)symbian"
|| req.http.User-Agent ~ "(?i)^sonyericsson"
|| req.http.User-Agent ~ "(?i)^nokia"
|| req.http.User-Agent ~ "(?i)^samsung"
|| req.http.User-Agent ~ "(?i)^lg"
|| req.http.User-Agent ~ "(?i)bada"
|| req.http.User-Agent ~ "(?i)blazer"
|| req.http.User-Agent ~ "(?i)cellphone"
|| req.http.User-Agent ~ "(?i)iemobile"
|| req.http.User-Agent ~ "(?i)midp-2.0"
|| req.http.User-Agent ~ "(?i)u990"
|| req.http.User-Agent ~ "(?i)netfront"
|| req.http.User-Agent ~ "(?i)opera mini"
|| req.http.User-Agent ~ "(?i)palm"
|| req.http.User-Agent ~ "(?i)nintendo wii"
|| req.http.User-Agent ~ "(?i)playstation portable"
|| req.http.User-Agent ~ "(?i)portalmmm"
|| req.http.User-Agent ~ "(?i)proxinet"
|| req.http.User-Agent ~ "(?i)sonyericsson"
|| req.http.User-Agent ~ "(?i)symbian"
|| req.http.User-Agent ~ "(?i)windows\ ?ce"
|| req.http.User-Agent ~ "(?i)winwap"
|| req.http.User-Agent ~ "(?i)eudoraweb"
|| req.http.User-Agent ~ "(?i)htc"
|| req.http.User-Agent ~ "(?i)240x320"
|| req.http.User-Agent ~ "(?i)avantgo") {
set req.http.X-UA-Device = "mobile-generic";
}
}
}