Only send multicastNtf back in delete action. (#90)

* Only send multicastNtf back in delete action.

* Add document for sending multicast notification.

* document formatting

1 files changed, 25 insertions, 17 deletions

diff --git a/src/device.rs b/src/device.rs
index 62f3ffc..0558dbc 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -739,6 +739,31 @@ impl Device {
                         status: update_status,
                     });
                 });
+                // Following requirements are applicable when the action is set to Delete (Action field set to 0x01):
+                // When the command is received while the Session State is SESSION_STATE_ACTIVE,
+                // For requested Controlees present in the multicast list,
+                // UWBS shall send the SESSION_UPDATE_CONTROLLER_MULTICAST_LIST_NTF and the
+                // corresponding Controlee status shall be set to STATUS_OK_MULTICAST_LIST_UPDATE
+                // in the Status List of SESSION_UPDATE_CONTROLLER_MULTICAST_LIST_NTF.
+                if session.state == SessionState::SessionStateActive {
+                    let tx = self.tx.clone();
+                    tokio::spawn(async move {
+                        // Sleep for 5ms to make sure the notification is not being
+                        // sent before the response.
+                        // TODO(#84) remove the sleep.
+                        time::sleep(Duration::from_millis(5)).await;
+                        tx.send(
+                            SessionUpdateControllerMulticastListNtfBuilder {
+                                controlee_status,
+                                session_token: session_handle,
+                            }
+                            .build()
+                            .encode_to_vec()
+                            .unwrap(),
+                        )
+                        .unwrap()
+                    });
+                }
             }
         }
         session.app_config.number_of_controlees = dst_addresses.len() as u8;
@@ -752,23 +777,6 @@ impl Device {
                 ReasonCode::ErrorInvalidNumOfControlees,
             )
         }
-        let tx = self.tx.clone();
-        tokio::spawn(async move {
-            // Sleep for 5ms to make sure the notification is not being
-            // sent before the response.
-            // TODO(#84) remove the sleep.
-            time::sleep(Duration::from_millis(5)).await;
-            tx.send(
-                SessionUpdateControllerMulticastListNtfBuilder {
-                    controlee_status,
-                    session_token: session_handle,
-                }
-                .build()
-                .encode_to_vec()
-                .unwrap(),
-            )
-            .unwrap()
-        });
         SessionUpdateControllerMulticastListRspBuilder { status }.build()
     }