Add support for the Varnish VCL edge scripting language

2025-10-29 17:50:22 +00:00 · 2014-06-06 12:59:50 -07:00
parent 44c5413abf
commit 7cd23036a7
4 changed files with 398 additions and 3 deletions
--- a/samples/VCL/varnish2_default.vcl
+++ b/samples/VCL/varnish2_default.vcl
@@ -0,0 +1,152 @@
+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2008 Linpro AS
+ * All rights reserved.
+ *
+ * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
+ *
+ * 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.
+ *
+ * $Id$
+ *
+ * The default VCL code.
+ *
+ * NB! You do NOT need to copy & paste all of these functions into your
+ * own vcl code, if you do not provide a definition of one of these
+ * functions, the compiler will automatically fall back to the default
+ * code from this file.
+ *
+ * This code will be prefixed with a backend declaration built from the
+ * -b argument.
+ */
+
+sub vcl_recv {
+    if (req.request != "GET" &&
+      req.request != "HEAD" &&
+      req.request != "PUT" &&
+      req.request != "POST" &&
+      req.request != "TRACE" &&
+      req.request != "OPTIONS" &&
+      req.request != "DELETE") {
+        /* Non-RFC2616 or CONNECT which is weird. */
+        return (pipe);
+    }
+    if (req.request != "GET" && req.request != "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 (lookup);
+}
+
+sub vcl_pipe {
+    # Note that only the first request to the backend will have
+    # X-Forwarded-For set.  If you use X-Forwarded-For and want to
+    # have it set for all requests, make sure to have:
+    # set req.http.connection = "close";
+    # here.  It is not set by default as it might break some broken web
+    # applications, like IIS with NTLM authentication.
+    return (pipe);
+}
+
+sub vcl_pass {
+    return (pass);
+}
+
+sub vcl_hash {
+    set req.hash += req.url;
+    if (req.http.host) {
+        set req.hash += req.http.host;
+    } else {
+        set req.hash += server.ip;
+    }
+    return (hash);
+}
+
+sub vcl_hit {
+    if (!obj.cacheable) {
+        return (pass);
+    }
+    return (deliver);
+}
+
+sub vcl_miss {
+    return (fetch);
+}
+
+sub vcl_fetch {
+    if (!obj.cacheable) {
+        return (pass);
+    }
+    if (obj.http.Set-Cookie) {
+        return (pass);
+    }
+    set obj.prefetch =  -30s;
+    return (deliver);
+}
+
+sub vcl_deliver {
+    return (deliver);
+}
+
+sub vcl_discard {
+    /* XXX: Do not redefine vcl_discard{}, it is not yet supported */
+    return (discard);
+}
+
+sub vcl_prefetch {
+    /* XXX: Do not redefine vcl_prefetch{}, it is not yet supported */
+    return (fetch);
+}
+
+sub vcl_timeout {
+    /* XXX: Do not redefine vcl_timeout{}, it is not yet supported */
+    return (discard);
+}
+
+sub vcl_error {
+    set obj.http.Content-Type = "text/html; charset=utf-8";
+    synthetic {"
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+  <head>
+    <title>"} obj.status " " obj.response {"</title>
+  </head>
+  <body>
+    <h1>Error "} obj.status " " obj.response {"</h1>
+    <p>"} obj.response {"</p>
+    <h3>Guru Meditation:</h3>
+    <p>XID: "} req.xid {"</p>
+    <hr>
+    <address>
+       <a href="http://www.varnish-cache.org/">Varnish cache server</a>
+    </address>
+  </body>
+</html>
+"};
+    return (deliver);
+}