Add the Varnish configuration we are currently using (stripped of everything irrelevant).

diff --git a/default.vcl b/default.vcl
new file mode 100644 (file)
index 0000000..ef0b7d7
--- /dev/null
+++ b/default.vcl
@@ -0,0 +1,54 @@
+// Varnish configuration snippets.
+
+vcl 4.0;
+
+backend analysis {
+    .host = "127.0.0.1";
+    .port = "5000";
+}
+
+sub vcl_recv {
+    if (req.restarts == 0) {
+        if (req.http.x-forwarded-for) {
+            set req.http.X-Forwarded-For =
+                req.http.X-Forwarded-For + ", " + client.ip;
+        } else {
+            set req.http.X-Forwarded-For = client.ip;
+        }
+    }
+    if (req.http.host ~ "analysis\.sesse\.net$" && req.url ~ "^/analysis\.pl") {
+        set req.backend_hint = analysis;
+        return (hash);
+    }
+}
+
+sub vcl_deliver { 
+    if (resp.http.x-analysis) {
+        set resp.http.date = now;
+    }
+    unset resp.http.x-analysis;
+}
+
+sub vcl_hash {
+    hash_data(regsub(req.url, "unique=.*$", ""));
+    if (req.http.host) {
+        hash_data(req.http.host);
+    } else {
+        hash_data(server.ip);
+    }
+    return (lookup);
+}
+
+sub vcl_backend_response {
+    if (bereq.http.host ~ "analysis") {
+        set beresp.ttl = 1m;
+        if (beresp.http.content-type ~ "text" || beresp.http.content-type ~ "json") {
+             set beresp.do_gzip = true;
+        }
+        if (beresp.http.content-type ~ "json") {
+             set beresp.http.x-analysis = 1;
+             ban ( "obj.http.x-analysis == 1 && obj.http.x-remoteglot-last-modified != " + beresp.http.x-remoteglot-last-modified );
+        }
+        return (deliver);
+    }
+}