half broken

internal/server/stats.go

@@ -29,6 +29,7 @@ func (s *Server) ByTransport() map[string]TransportStats {
 		ts.Blocked = s.load(t, "blocked")
 		ts.Cached = s.load(t, "cached")
 		ts.Errors = s.load(t, "errors")
+		ts.Dropped = s.load(t, "dropped")
 		ts.Truncated = s.load(t, "truncated")
 		ts.Sent = s.load(t, "sent")
 		out[t] = ts
@@ -51,6 +52,12 @@ type TransportStats struct {
 	Blocked   uint64 `json:"blocked"`
 	Cached    uint64 `json:"cached"`
 	Errors    uint64 `json:"errors"`
+	// Dropped is queries answered with silence on this transport. It is
+	// bumped for every transport (a DoH drop used to be counted as an error
+	// only, which made the console's transport tab under-report it), and
+	// aggregating it per transport is the only way the UI can show it: the
+	// aggregate in HandlerStats cannot say which transport dropped.
+	Dropped   uint64 `json:"dropped"`
 	Truncated uint64 `json:"truncated"`
 	Sent      uint64 `json:"sent"`
 }