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Upon receiving a SIGTERM, we immediately disconnect from the websocket connection to the portal and set a flag that we are shutting down. Once we are disconnected from the portal and no longer have an active allocations, we exit with 0. A repeated SIGTERM signal will interrupt this process and force the relay to shutdown. Disconnecting from the portal will (eventually) trigger a message to clients and gateways that this relay should no longer be used. Thus, depending on the timeout our supervisor has configured after sending SIGTERM, the relay will continue all TURN operations until the number of allocations drops to 0. Currently, we also allow clients to make new allocations and refreshing existing allocations. In the future, it may make sense to implement a dedicated status code and refuse `ALLOCATE` and `REFRESH` messages whilst we are shutting down. Related: #4548. --------- Signed-off-by: Thomas Eizinger <thomas@eizinger.io> Co-authored-by: Jamil <jamilbk@users.noreply.github.com>