Varnish Request Url was not the same with apache request - varnish

Question

I am sending a request to Varnish but the request was changed so that the output is wrong
original request:
admin/catalog/category/grid/key/d53fe1b4a969a873d1e0b2174848cef5b10797c35dce4c51be04d470db648e8c/id/2/filter//page/2/?ajax=true&isAjax=true
request which was pushed to varnish (varnishlog)
admin/catalog/category/grid/key/b5fbeb78a5bd6bedcb698beac083361a9891a04484bb59541b69e9420fb691aa/id/2/filter/page/3/?ajax=true&isAjax=true
a slightly different between the 2 requests is the filter/ and filter// part.
When coming with an original request: the site takes filter as param and with value ""
But with Request pushed to varnish: it becomes filter as param and with value page, then param page was not found and made the code go wrongs.
Adding my vcl content:
vcl 4.0;
import std;
# The minimal Varnish version is 4.0
# For SSL offloading, pass the following header in your proxy server or load balancer: 'X-Forwarded-Proto: https'
backend default {
.host = "web";
.port = "80";
}
acl purge {
"web";
"localhost";
"127.0.0.1";
}
sub vcl_recv {
if (req.method == "PURGE") {
if (client.ip !~ purge) {
return (synth(405, "Method not allowed"));
}
if (!req.http.X-Magento-Tags-Pattern) {
return (purge);
}
if (!req.http.X-Magento-Tags-Pattern && !req.http.X-Pool) {
return (synth(400, "X-Magento-Tags-Pattern or X-Pool header required"));
}
if (req.http.host && req.http.host != "") {
ban("obj.http.X-Host ~ " + req.http.host + " && obj.http.X-Magento-Tags ~ " + req.http.X-Magento-Tags-Pattern);
} else {
ban("obj.http.X-Magento-Tags ~ " + req.http.X-Magento-Tags-Pattern);
}
# If all Tags should be purged clear
# ban everything to catch assets as well
if (req.http.X-Magento-Tags-Pattern == ".*") {
ban("req.url ~ .*");
}
return (synth(200, "Purged"));
}
if (req.method != "GET" &&
req.method != "HEAD" &&
req.method != "PUT" &&
req.method != "POST" &&
req.method != "TRACE" &&
req.method != "OPTIONS" &&
req.method != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
# We only deal with GET and HEAD by default
if (req.method != "GET" && req.method != "HEAD") {
return (pass);
}
# Bypass shopping cart, checkout
if (req.url ~ "/checkout") {
return (pass);
}
# normalize url in case of leading HTTP scheme and domain
set req.url = regsub(req.url, "^http[s]?://", "");
# collect all cookies
std.collect(req.http.Cookie);
# Remove Google gclid parameters to minimize the cache objects
set req.url = regsuball(req.url,"\?gclid=[^&]+$",""); # strips when QS = "?gclid=AAA"
set req.url = regsuball(req.url,"\?gclid=[^&]+&","?"); # strips when QS = "?gclid=AAA&foo=bar"
set req.url = regsuball(req.url,"&gclid=[^&]+",""); # strips when QS = "?foo=bar&gclid=AAA" or QS = "?foo=bar&gclid=AAA&bar=baz"
# static files are always cacheable. remove SSL flag and cookie
if (req.url ~ "^/(pub/)?(media|static)/.*\.(ico|css|js|jpg|jpeg|png|gif|tiff|bmp|mp3|ogg|svg|swf|woff|woff2|eot|ttf|otf)$") {
unset req.http.Https;
unset req.http.X-Forwarded-Proto;
unset req.http.Cookie;
}
return (hash);
}
sub vcl_hash {
if (req.http.cookie ~ "X-Magento-Vary=") {
hash_data(regsub(req.http.cookie, "^.*?X-Magento-Vary=([^;]+);*.*$", "\1"));
}
# For multi site configurations to not cache each other's content
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
# To make sure http users don't see ssl warning
if (req.http.X-Forwarded-Proto) {
hash_data(req.http.X-Forwarded-Proto);
}
}
sub vcl_backend_response {
set beresp.http.X-Host = bereq.http.host;
if (beresp.http.content-type ~ "text") {
set beresp.do_esi = true;
}
if (bereq.url ~ "\.js$" || beresp.http.content-type ~ "text") {
set beresp.do_gzip = true;
}
# cache only successfully responses and 404s
if (beresp.status != 200 && beresp.status != 404) {
set beresp.ttl = 0s;
set beresp.uncacheable = true;
return (deliver);
} elsif (beresp.http.Cache-Control ~ "private") {
set beresp.uncacheable = true;
set beresp.ttl = 86400s;
return (deliver);
}
if (beresp.http.X-Magento-Debug) {
set beresp.http.X-Magento-Cache-Control = beresp.http.Cache-Control;
}
# validate if we need to cache it and prevent from setting cookie
# images, css and js are cacheable by default so we have to remove cookie also
if (beresp.ttl > 0s && (bereq.method == "GET" || bereq.method == "HEAD")) {
unset beresp.http.set-cookie;
if (bereq.url !~ "\.(ico|css|js|jpg|jpeg|png|gif|tiff|bmp|gz|tgz|bz2|tbz|mp3|ogg|svg|swf|woff|woff2|eot|ttf|otf)(\?|$)") {
set beresp.http.Pragma = "no-cache";
set beresp.http.Expires = "-1";
set beresp.http.Cache-Control = "no-store, no-cache, must-revalidate, max-age=0";
set beresp.grace = 1m;
}
}
# "Microcache" for search
if (bereq.url ~ "/catalogsearch") {
set beresp.ttl = 30m;
}
# If page is not cacheable then bypass varnish for 2 minutes as Hit-For-Pass
if (beresp.ttl <= 0s ||
beresp.http.Surrogate-control ~ "no-store" ||
(!beresp.http.Surrogate-Control && beresp.http.Vary == "*")) {
# Mark as Hit-For-Pass for the next 2 minutes
set beresp.ttl = 120s;
set beresp.uncacheable = true;
}
return (deliver);
}
sub vcl_deliver {
if (resp.http.X-Magento-Debug) {
if (resp.http.x-varnish ~ " ") {
set resp.http.X-Magento-Cache-Debug = "HIT";
} else {
set resp.http.X-Magento-Cache-Debug = "MISS";
}
} else {
unset resp.http.Age;
}
unset resp.http.X-Magento-Debug;
unset resp.http.X-Magento-Tags;
unset resp.http.X-Powered-By;
unset resp.http.Server;
unset resp.http.X-Varnish;
unset resp.http.Via;
unset resp.http.Link;
}