livekit-rtc: set room state to disconnected on dc

[nbsp]

while trying to reproduce another bug i found this: room.disconnect() does not set the room state to disconnected.

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[nbsp]

aha, i see. i'll change it so that event gets properly processed before the await resolves

[nbsp]

diff --git a/packages/livekit-rtc/src/room.ts b/packages/livekit-rtc/src/room.ts
index 95f19ff..f9bebeb 100644
--- a/packages/livekit-rtc/src/room.ts
+++ b/packages/livekit-rtc/src/room.ts
@@ -148,7 +149,7 @@ export class Room extends (EventEmitter as new () => TypedEmitter<RoomCallbacks>
       return;
     }

-    FfiClient.instance.request<DisconnectResponse>({
+    const res = FfiClient.instance.request<DisconnectResponse>({
       message: {
         case: 'disconnect',
         value: {
@@ -157,9 +158,12 @@ export class Room extends (EventEmitter as new () => TypedEmitter<RoomCallbacks>
       },
     });

+    await FfiClient.instance.waitFor<DisconnectCallback>((ev: FfiEvent) => {
+      return ev.message.case == 'disconnect' && ev.message.value.asyncId == res.asyncId;
+    });
+
     FfiClient.instance.removeAllListeners();
     this.removeAllListeners();
-    this.connectionState = ConnectionState.CONN_DISCONNECTED;
   }

   private onFfiEvent = (ffiEvent: FfiEvent) => {

this doesn't work, for some reason. neither RoomEvent.Disconnect or RoomEvent.ConnectionStateChanged fire here, and this goes on without changing anything

[theomonnom]

this doesn't work, for some reason. neither RoomEvent.Disconnect or RoomEvent.ConnectionStateChanged fire here, and this goes on without changing anything

Mmh seems like an issue on the Rust side then?

[nbsp]

diff --git a/packages/livekit-rtc/src/room.ts b/packages/livekit-rtc/src/room.ts
index 95f19ff..f9bebeb 100644
--- a/packages/livekit-rtc/src/room.ts
+++ b/packages/livekit-rtc/src/room.ts
@@ -148,7 +149,7 @@ export class Room extends (EventEmitter as new () => TypedEmitter<RoomCallbacks>
       return;
     }

-    FfiClient.instance.request<DisconnectResponse>({
+    const res = FfiClient.instance.request<DisconnectResponse>({
       message: {
         case: 'disconnect',
         value: {
@@ -157,9 +158,12 @@ export class Room extends (EventEmitter as new () => TypedEmitter<RoomCallbacks>
       },
     });

+    await FfiClient.instance.waitFor<DisconnectCallback>((ev: FfiEvent) => {
+      return ev.message.case == 'disconnect' && ev.message.value.asyncId == res.asyncId;
+    });
+
     FfiClient.instance.removeAllListeners();
     this.removeAllListeners();
-    this.connectionState = ConnectionState.CONN_DISCONNECTED;
   }

   private onFfiEvent = (ffiEvent: FfiEvent) => {

this doesn't work, for some reason. neither RoomEvent.Disconnect or RoomEvent.ConnectionStateChanged fire here, and this goes on without changing anything

looked into it a bit more, the DisconnectCallback does fire, but nothing else gets run because of it. adding a manual RoomEvent.Disconnect hook to the callback might work, but i don't know if that's a hack, because iirc it should do it by itself?

[nbsp]

sometimes it works? there's a race condition somewhere in here.

[nbsp]

this is working now: the room state is set to disconnected manually, regardless of whether the ConnectionStateChange event fires on time before end-of-stream. merge livekit/rust-sdks#370 first, then i'll update this PR to use updated main with the necessary changes.

[lukasIO]

can we close this? Is there still an issue around room state when disconnecting?