/*- * Copyright (c) 2006 Verdens Gang AS * Copyright (c) 2006-2015 Varnish Software AS * All rights reserved. * * Author: Poul-Henning Kamp * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * This is the builtin VCL code */ vcl 4.0; ####################################################################### # Client side sub vcl_recv { if (req.method == "PRI") { /* This will never happen in properly formed traffic (see: RFC7540) */ return (synth(405)); } if (!req.http.host && req.esi_level == 0 && req.proto ~ "^(?i)HTTP/1.1") { /* In HTTP/1.1, Host is required. */ return (synth(400)); } if (req.method != "GET" && req.method != "HEAD" && req.method != "PUT" && req.method != "POST" && req.method != "TRACE" && req.method != "OPTIONS" && req.method != "DELETE" && req.method != "PATCH") { /* Non-RFC2616 or CONNECT which is weird. */ return (pipe); } if (req.method != "GET" && req.method != "HEAD") { /* We only deal with GET and HEAD by default */ return (pass); } if (req.http.Authorization || req.http.Cookie) { /* Not cacheable by default */ return (pass); } return (hash); } sub vcl_pipe { # By default Connection: close is set on all piped requests, to stop # connection reuse from sending future requests directly to the # (potentially) wrong backend. If you do want this to happen, you can undo # it here. # unset bereq.http.connection; return (pipe); } sub vcl_pass { return (fetch); } sub vcl_hash { hash_data(req.url); if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); } return (lookup); } sub vcl_purge { return (synth(200, "Purged")); } sub vcl_hit { if (obj.ttl >= 0s) { // A pure unadulterated hit, deliver it return (deliver); } if (obj.ttl + obj.grace > 0s) { // Object is in grace, deliver it // Automatically triggers a background fetch return (deliver); } // fetch & deliver once we get the result return (miss); } sub vcl_miss { return (fetch); } sub vcl_deliver { return (deliver); } /* * We can come here "invisibly" with the following errors: 500 & 503 */ sub vcl_synth { set resp.http.Content-Type = "text/html; charset=utf-8"; set resp.http.Retry-After = "5"; set resp.body = {" "} + resp.status + " " + resp.reason + {"

Error "} + resp.status + " " + resp.reason + {"

"} + resp.reason + {"

Guru Meditation:

XID: "} + req.xid + {"

Varnish cache server

"}; return (deliver); } ####################################################################### # Backend Fetch sub vcl_backend_fetch { if (bereq.method == "GET") { unset bereq.body; } return (fetch); } sub vcl_backend_response { if (bereq.uncacheable) { return (deliver); } else if (beresp.ttl <= 0s || beresp.http.Set-Cookie || beresp.http.Surrogate-control ~ "no-store" || (!beresp.http.Surrogate-Control && beresp.http.Cache-Control ~ "no-cache|no-store|private") || beresp.http.Vary == "*") { # Mark as "Hit-For-Miss" for the next 2 minutes set beresp.ttl = 120s; set beresp.uncacheable = true; } return (deliver); } sub vcl_backend_error { set beresp.http.Content-Type = "text/html; charset=utf-8"; set beresp.http.Retry-After = "5"; set beresp.body = {" "} + beresp.status + " " + beresp.reason + {"

Error "} + beresp.status + " " + beresp.reason + {"

"} + beresp.reason + {"

Guru Meditation:

XID: "} + bereq.xid + {"

Varnish cache server

"}; return (deliver); } ####################################################################### # Housekeeping sub vcl_init { return (ok); } sub vcl_fini { return (ok); }