Include LinkedDataHub.id_token cookie value in the VCL hash, if it …

…exists

platform/varnish.vcl.template

@@ -58,6 +58,11 @@ sub vcl_recv {
         set req.http.Cookie = regsuball(req.http.Cookie, ";[^ ][^;]*", "");
         set req.http.Cookie = regsuball(req.http.Cookie, "^[; ]+|[; ]+$", "");
 
+        if (req.http.Cookie ~ "LinkedDataHub\.id_token=") {
+            # Extract the LinkedDataHub.id_token value
+            set req.http.X-LinkedDataHub-Id-Token = regsub(req.http.Cookie, ".*LinkedDataHub\.id_token=([^; ]+).*", "\1");
+        }
+
         if (req.http.cookie ~ "^\s*$") {
             unset req.http.cookie;
         }
@@ -70,10 +75,16 @@ sub vcl_hash {
     hash_data(req.url);
     hash_data(req.http.Host);
 
+    # include the client certificate in the hash, if it exists
     if (req.http.Client-Cert) {
         hash_data(req.http.Client-Cert);
     }
 
+    # include LinkedDataHub.id_token cookie value in the hash, if it exists
+    if (req.http.X-LinkedDataHub-Id-Token) {
+        hash_data(req.http.X-LinkedDataHub-Id-Token);
+    }
+
     return (lookup);
 }