fix: recurriing network issue

toju-app/src/app/store/rooms/room-signaling-connection.ts

@@ -135,7 +135,13 @@ export class RoomSignalingConnection {
       }
 
       if (!isCompatible) {
-        if (candidate.isPrimary) {
+        // Warning: offline/unreachable endpoints also fail this check. Only
+        // version-incompatible primary endpoints should stop fallback; transient
+        // 521/522/network failures must continue to the next active endpoint.
+        const endpoint = this.serverDirectory.resolveRoomEndpoint(candidate.source);
+        const isEndpointIncompatible = endpoint?.status === 'incompatible';
+
+        if (candidate.isPrimary && isEndpointIncompatible) {
           if (shouldShowCompatibilityError) {
             this.store.dispatch(
               RoomsActions.setSignalServerCompatibilityError({ message: CLIENT_UPDATE_REQUIRED_MESSAGE })
@@ -297,6 +303,10 @@ export class RoomSignalingConnection {
 
     if (!this.webrtc.hasJoinedServer(room.id)) {
       const selector = this.resolveRoomSignalSelector(primarySource, resolvedRoom.name);
+      // Warning: getServer returns null for both SERVER_NOT_FOUND and transient
+      // endpoint failures. Always search active endpoints before deciding the
+      // saved room source is stale, otherwise a Cloudflare/origin outage pins
+      // reconnects to the dead endpoint.
       const authoritativeServer = (
         selector
           ? await firstValueFrom(this.serverDirectory.getServer(room.id, selector))