# Videoroom publisher. hangup event occur when the network is disconnected? **URL:** \ **Category:** General\ **Created:** [December 26, 2024, 7:55am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427 "2024-12-26T07:55:13Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Jaejong](https://avatars.discourse-cdn.com/v4/letter/j/e47774/32.png) [@Jaejong](https://janus.discourse.group/u/Jaejong)\ **Post date:** [December 26, 2024, 7:55am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/1 "2024-12-26T07:55:13Z")
There are times when the hangup event does not occur. Could this be an issue with the libnice library? Options and versions in use - hangup\_on\_failed=true - ice\_consent\_freshness=true - janus 1.2.1 - libnice 0.1.21 ---
**Author:** ![atoppi](https://yyz2.discourse-cdn.com/free1/user_avatar/janus.discourse.group/atoppi/32/8_2.png) [@atoppi](https://janus.discourse.group/u/atoppi)\ **Post date:** [January 2, 2025, 11:20am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/2 "2025-01-02T11:20:13Z")
Hi, it’s a bit difficult to reply properly without any context here. Please try to describe the scenario where hangup does not occur, in terms of: - available network interfaces (client and server) - plugin in use - janus logs - (ideally) webrtc internals dump ---
**Author:** ![Jaejong](https://avatars.discourse-cdn.com/v4/letter/j/e47774/32.png) [@Jaejong](https://janus.discourse.group/u/Jaejong)\ **Post date:** [January 3, 2025, 4:09am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/3 "2025-01-03T04:09:29Z")
Thank you for your reply. We are using the VideoRoom plugin. The VideoRoom publisher is an Android mobile client connected via Wi-Fi. The Janus server is on a wired network and resides behind the same NAT as the mobile client. The mobile client creates a VideoRoom and joins as a publisher. When the mobile client’s battery runs out and the device powers off, there are cases where the hangup event does not occur on the WebRTC PeerConnection of the VideoRoom publisher. ---
**Author:** ![atoppi](https://yyz2.discourse-cdn.com/free1/user_avatar/janus.discourse.group/atoppi/32/8_2.png) [@atoppi](https://janus.discourse.group/u/atoppi)\ **Post date:** [January 3, 2025, 8:50am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/4 "2025-01-03T08:50:54Z")
What about the events on the transport session? If the device shutdowns, the websocket or the long poll session will be destroyed eventually. ---
**Author:** ![Jaejong](https://avatars.discourse-cdn.com/v4/letter/j/e47774/32.png) [@Jaejong](https://janus.discourse.group/u/Jaejong)\ **Post date:** [January 3, 2025, 4:04pm UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/5 "2025-01-03T16:04:27Z")
I truly truly appreciate your response ans janus. I love janus. * * * What about the events on the transport session? → I didn’t understand what you meant. Could you please explain it? If the device shutdowns, the websocket or the long poll session will be destroyed eventually. → I know that already. Since English is not my native language, I couldn’t explain it in detail. Since I am using a translation tool to write this, I kindly ask for your understanding in advance. * * * I am developing an application server that manages Janus sessions and VideoRoom handles. This application server handles creating/deleting Janus sessions and creating/joining/deleting VideoRooms based on client requests. The Android mobile client mentioned in the comment is a WebRTC client + private client. This mobile client creates and joins VideoRooms through integration with the application server. As a result, a WebRTC PeerConnection between the mobile client and Janus VideoRoom Publisher’s WebRTC PeerConnection will be established. With the configuration settings hangup\_on\_failed=true and ice\_consent\_freshness=true applied in Janus. Under these conditions, if the device shutdowns, ICE consent freshness will fail. Since the hangup\_on\_failed option is set to true, a hangup event should be triggered upon failure. but there are rare occasions when the hangup event does not occur. I requested help because I need to verify whether the issue is with the development or the application server. ---
**Author:** ![atoppi](https://yyz2.discourse-cdn.com/free1/user_avatar/janus.discourse.group/atoppi/32/8_2.png) [@atoppi](https://janus.discourse.group/u/atoppi)\ **Post date:** [January 3, 2025, 4:20pm UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/6 "2025-01-03T16:20:07Z")
The only explanation for not receiving the hangup event is that the related handle is being detached before. Keep track of the events coming from Janus and check for detach/destroyed. ---
**Author:** ![Jaejong](https://avatars.discourse-cdn.com/v4/letter/j/e47774/32.png) [@Jaejong](https://janus.discourse.group/u/Jaejong)\ **Post date:** [January 4, 2025, 1:04am UTC](https://janus.discourse.group/t/videoroom-publisher-hangup-event-occur-when-the-network-is-disconnected/1427/7 "2025-01-04T01:04:02Z")
Thank you very much. I understand.