actually support cancels

src/http_server.rs

@@ -15,7 +15,7 @@ use tower_http::limit::RequestBodyLimitLayer;
 use crate::{
     JocalService,
     discovery::register_device,
-    transfer::{handle_prepare_upload, handle_receive_upload},
+    transfer::{handle_cancel, handle_prepare_upload, handle_receive_upload},
 };
 
 impl JocalService {
@@ -61,6 +61,7 @@ impl JocalService {
                 post(handle_prepare_upload),
             )
             .route("/api/localsend/v2/upload", post(handle_receive_upload))
+            .route("/api/localsend/v2/cancel", post(handle_cancel))
             .layer(DefaultBodyLimit::disable())
             .layer(RequestBodyLimitLayer::new(1024 * 1024 * 1024))
             .with_state(self.clone())

src/transfer.rs

@@ -329,21 +329,33 @@ pub async fn handle_cancel(
     Query(params): Query<CancelParams>,
     State(service): State<JocalService>,
 ) -> impl IntoResponse {
+    // it's OK to hold this lock for the whole body here, we hardly ever have to
+    // handle cancels and none of these ops are slow.
     let mut sessions_lock = service.sessions.write().await;
     let session = match sessions_lock.get_mut(&params.session_id) {
         Some(session) => session,
         None => return StatusCode::BAD_REQUEST.into_response(),
     };
 
-    debug!("got cancel request for {}", params.session_id);
+    info!(
+        "{} cancelled the transfer of {}",
+        &session.sender.alias,
+        session
+            .files
+            .values()
+            .map(|f| f.file_name.clone())
+            .collect::<Vec<_>>()
+            .join(",")
+    );
 
     session.status = SessionStatus::Cancelled;
 
     if let Ok(id) = Julid::from_str(&params.session_id) {
         service.send_event(JocalEvent::Cancelled { session_id: id });
-    };
-
-    StatusCode::OK.into_response()
+        StatusCode::OK.into_response()
+    } else {
+        StatusCode::BAD_REQUEST.into_response()
+    }
 }
 
 // Cancel parameters struct