varnish 4 vcl wont compile - wordpress

Question

I am attempting to create a varnish file for a wordpress site, but I am getting the following compile error:
varnish_1 | Message from VCC-compiler:
varnish_1 | Unused acl purge, defined:
varnish_1 | ('input' Line 22 Pos 5)
varnish_1 | acl purge {
varnish_1 | ----#####--
varnish_1 |
varnish_1 | Running VCC-compiler failed, exited with 2
varnish_1 |
varnish_1 | VCL compilation failed
wp1_varnish_1 exited with code 2
The vcl file is below. If you remove the acl purge function it works totally fine. Any ideas? Thanks in advance.
#
# This is an example VCL file for Varnish.
#
# It does not do anything by default, delegating control to the
# builtin VCL. The builtin VCL is called when there is no explicit
# return statement.
#
# See the VCL chapters in the Users Guide at https://www.varnish-cache.org/docs/
# and http://varnish-cache.org/trac/wiki/VCLExamples for more examples.
# Marker to tell the VCL compiler that this VCL has been adapted to the
# new 4.0 format.
vcl 4.0;
import directors;
# Default backend definition. Set this to point to your content server.
backend default {
.host = "web";
.port = "80";
}
acl purge {
"localhost";
"127.0.0.1";
}
#sub vcl_recv {
# Happens before we check if we have this in cache already.
#
# Typically you clean up the request here, removing cookies you don't need,
# rewriting the request, etc.
#}
#sub vcl_backend_response {
# Happens after we have read the response headers from the backend.
#
# Here you clean the response headers, removing silly Set-Cookie headers
# and other mistakes your backend does.
#}
#sub vcl_deliver {
# Happens when we have all the pieces we need, and are about to send the
# response to the client.
#
# You can do accounting or modifying the final object here.
#}
sub vcl_init {
# Called when VCL is loaded, before any requests pass through it. Typically used to initialize VMODs.
}
sub vcl_recv {
if (req.method == "PURGE") {
if (req.http.X-Purge-Method == "regex")
{
ban("req.url ~ " + req.url + " && req.http.host ~ " + req.http.host);
return (synth(200, "Banned."));
}
else
{
return (purge);
}
}
if (req.url ~ "\.(gif|jpg|jpeg|swf|ttf|css|js|flv|mp3|mp4|pdf|ico|png)(\?.*|)$") {
unset req.http.cookie;
set req.url = regsub(req.url, "\?.*$", "");
}
if (req.url ~ "\?(utm_(campaign|medium|source|term)|adParams|client|cx|eid|fbid|feed|ref(id|src)?|v(er|iew))=") {
set req.url = regsub(req.url, "\?.*$", "");
}
if (
req.url ~ "^/wp-(login|admin)" || req.url ~ "/wp-cron.php" || req.url ~ "/wp-content/uploads/"
|| req.url ~ "preview=true" || req.url ~ "xmlrpc.php" || req.url ~ "\?s=" || req.url ~ "/choose-your-logo"
|| req.url ~ "/cart" || req.url ~ "/checkout" || req.url ~ "/my-account" || req.url ~ "/addons"
) {
# do not use the cache
return(pass); // DO NOT CACHE
}
# WooCommerce
if (req.url ~ "\?add-to-cart=") {
# do not use the cache
return(pass); // DO NOT CACHE
}
# Kick DFind requests
if (req.url ~ "^/w00tw00t") {
return (synth(404, "Not Found"));
}
if (req.http.cookie) {
# Google Analytics
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(__utm[a-z]+)=([^;]*)", "");
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(_ga)=([^;]*)", "");
# Quant Capital
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(__qc[a-z]+)=([^;]*)", "");
# __gad __gads
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(__gad[a-z]+)=([^;]*)", "");
# Google Cookie consent (client javascript cookie)
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(displayCookieConsent)=([^;]*)", "");
# Other known Cookies: remove them (if found).
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(__CT_Data)=([^;]*)", "");
set req.http.Cookie = regsuball( req.http.Cookie, "(^|;\s*)(WRIgnore|WRUID)=([^;]*)", "");
# PostAction: Remove (once and if found) a ";" prefix followed by 0..n whitespaces.
# INFO \s* = 0..n whitespace characters
set req.http.Cookie = regsub( req.http.Cookie, "^;\s*", "" );
# PostAction: Unset the header if it is empty or 0..n whitespaces.
if ( req.http.cookie ~ "^\s*$" ) {
unset req.http.Cookie;
}
}
###
### Normalize the Accept-Language header
### We do not need a cache for each language-country combination! Just keep en-* and nl-* for future use.
### https://www.varnish-cache.org/docs/4.0/users-guide/increasing-your-hitrate.html#http-vary
if (req.http.Accept-Language) {
if (req.http.Accept-Language ~ "^en") {
set req.http.Accept-Language = "en";
} elsif (req.http.Accept-Language ~ "^nl") {
set req.http.Accept-Language = "nl";
} else {
# Unknown language. Set it to English.
set req.http.Accept-Language = "en";
}
}
}
# Drop any cookies Wordpress tries to send back to the client.
sub vcl_backend_response {
if ( (!(bereq.url ~ "(wp-(login|admin)|login)")) || (bereq.method == "GET") ) {
unset beresp.http.set-cookie;
set beresp.ttl = 1h;
}
if (bereq.url ~ "\.(gif|jpg|jpeg|swf|ttf|css|js|flv|mp3|mp4|pdf|ico|png)(\?.*|)$") {
set beresp.ttl = 48h;
}
}
sub vcl_deliver {
if (obj.hits > 0) {
set resp.http.X-Cache = "HIT";
} else {
set resp.http.X-Cache = "MISS";
}
}
sub vcl_hit {
if (req.method == "PURGE") {
return(synth(200,"OK"));
}
}
sub vcl_miss {
if (req.method == "PURGE") {
return(synth(404,"Not cached"));
}
}

Answer 1

The compiler is telling you the problem, and you already found the solution, remove the unused acl called purge:
Unused acl purge, defined:
The other option is to add a check to allow purge only from that acl:
if (req.method == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}