diff --git a/aero-proto/src/dav/controller.rs b/aero-proto/src/dav/controller.rs
index 76dd15d..8c53c6b 100644
--- a/aero-proto/src/dav/controller.rs
+++ b/aero-proto/src/dav/controller.rs
@@ -61,18 +61,19 @@ impl Controller {
             }
         };
 
+        let dav_hdrs = node.dav_header();
         let ctrl = Self { node, user, req };
 
         match method.as_str() {
             "OPTIONS" => Ok(Response::builder()
                 .status(200)
-                .header("DAV", "1")
+                .header("DAV", dav_hdrs)
                 .header("Allow", "HEAD,GET,PUT,OPTIONS,DELETE,PROPFIND,PROPPATCH,MKCOL,COPY,MOVE,LOCK,UNLOCK,MKCALENDAR,REPORT")
                 .body(codec::text_body(""))?),
             "HEAD" => {
-                tracing::warn!("HEAD not correctly implemented");
+                tracing::warn!("HEAD might not correctly implemented: should return ETags & co");
                 Ok(Response::builder()
-                    .status(404)
+                    .status(200)
                     .body(codec::text_body(""))?)
             },
             "GET" => ctrl.get().await,
@@ -348,11 +349,14 @@ impl Controller {
         }
 
         // Build response
-        dav::Multistatus::<All> {
+        let multistatus = dav::Multistatus::<All> {
             responses,
             responsedescription: None,
             extension,
-        }
+        };
+
+        tracing::debug!(multistatus=?multistatus, "multistatus response");
+        multistatus
     }
 }
 
diff --git a/aero-proto/src/dav/mod.rs b/aero-proto/src/dav/mod.rs
index 43de3a5..a3dd58d 100644
--- a/aero-proto/src/dav/mod.rs
+++ b/aero-proto/src/dav/mod.rs
@@ -98,7 +98,7 @@ impl Server {
             let conn = tokio::spawn(async move {
                 //@FIXME should create a generic "public web" server on which "routers" could be
                 //abitrarily bound
-                //@FIXME replace with a handler supporting http2 and TLS
+                //@FIXME replace with a handler supporting http2
 
                 match http::Builder::new()
                     .serve_connection(
@@ -106,8 +106,9 @@ impl Server {
                         service_fn(|req: Request<hyper::body::Incoming>| {
                             let login = login.clone();
                             tracing::info!("{:?} {:?}", req.method(), req.uri());
+                            tracing::debug!(req=?req, "full request");
                             async {
-                                match middleware::auth(login, req, |user, request| {
+                                let response = match middleware::auth(login, req, |user, request| {
                                     async { Controller::route(user, request).await }.boxed()
                                 })
                                 .await
@@ -119,7 +120,9 @@ impl Server {
                                             .status(500)
                                             .body(codec::text_body("Internal error"))
                                     }
-                                }
+                                };
+                                tracing::debug!(resp=?response, "full response");
+                                response
                             }
                         }),
                     )
diff --git a/aero-proto/src/dav/node.rs b/aero-proto/src/dav/node.rs
index 0a83f8c..3af3b81 100644
--- a/aero-proto/src/dav/node.rs
+++ b/aero-proto/src/dav/node.rs
@@ -40,7 +40,9 @@ pub(crate) trait DavNode: Send {
     fn supported_properties(&self, user: &ArcUser) -> dav::PropName<All>;
     /// Get the values for the given properties
     fn properties(&self, user: &ArcUser, prop: dav::PropName<All>) -> PropertyStream<'static>;
-    //fn properties(&self, user: &ArcUser, prop: dav::PropName<All>) -> Vec<dav::AnyProperty<All>>;
+    /// Get the value of the DAV header to return
+    fn dav_header(&self) -> String;
+
     /// Put an element (create or update)
     fn put<'a>(
         &'a self,
diff --git a/aero-proto/src/dav/resource.rs b/aero-proto/src/dav/resource.rs
index b6c0ed5..b5ae029 100644
--- a/aero-proto/src/dav/resource.rs
+++ b/aero-proto/src/dav/resource.rs
@@ -139,6 +139,10 @@ impl DavNode for RootNode {
     > {
         async { Err(std::io::Error::from(std::io::ErrorKind::Unsupported)) }.boxed()
     }
+
+    fn dav_header(&self) -> String {
+        "1".into()
+    }
 }
 
 #[derive(Clone)]
@@ -260,6 +264,10 @@ impl DavNode for HomeNode {
     > {
         async { Err(std::io::Error::from(std::io::ErrorKind::Unsupported)) }.boxed()
     }
+
+    fn dav_header(&self) -> String {
+        "1, access-control, calendar-access".into()
+    }
 }
 
 #[derive(Clone)]
@@ -393,6 +401,10 @@ impl DavNode for CalendarListNode {
     > {
         async { Err(std::io::Error::from(std::io::ErrorKind::Unsupported)) }.boxed()
     }
+
+    fn dav_header(&self) -> String {
+        "1, access-control, calendar-access".into()
+    }
 }
 
 #[derive(Clone)]
@@ -641,6 +653,9 @@ impl DavNode for CalendarNode {
         }
         .boxed()
     }
+    fn dav_header(&self) -> String {
+        "1, access-control, calendar-access".into()
+    }
 }
 
 #[derive(Clone)]
@@ -872,6 +887,10 @@ impl DavNode for EventNode {
     > {
         async { Err(std::io::Error::from(std::io::ErrorKind::Unsupported)) }.boxed()
     }
+
+    fn dav_header(&self) -> String {
+        "1, access-control".into()
+    }
 }
 
 #[derive(Clone)]
@@ -973,4 +992,8 @@ impl DavNode for CreateEventNode {
     > {
         async { Err(std::io::Error::from(std::io::ErrorKind::Unsupported)) }.boxed()
     }
+
+    fn dav_header(&self) -> String {
+        "1, access-control".into()
+    }
 }