remote config for making CDSI lookups via libsignal

ts/RemoteConfig.ts

@@ -27,6 +27,7 @@ export type ConfigKeyType =
   | 'desktop.senderKeyMaxAge'
   | 'desktop.experimentalTransportEnabled.alpha'
   | 'desktop.experimentalTransportEnabled.beta'
+  | 'desktop.cdsiViaLibsignal'
   | 'global.attachments.maxBytes'
   | 'global.attachments.maxReceiveBytes'
   | 'global.calling.maxGroupCallRingSize'

ts/textsecure/WebsocketResources.ts

@@ -359,7 +359,7 @@ export class WebSocketResourceWithShadowing implements IWebSocketResource {
 
   private updateStats(name: string) {
     const storedStats = AggregatedStats.loadOrCreateEmpty(name);
-    const updatedStats = AggregatedStats.add(storedStats, this.stats);
+    let updatedStats = AggregatedStats.add(storedStats, this.stats);
     if (
       this.shadowingWithReporting &&
       AggregatedStats.shouldReportError(updatedStats) &&
@@ -368,6 +368,11 @@ export class WebSocketResourceWithShadowing implements IWebSocketResource {
       window.reduxActions.toast.showToast({
         toastType: ToastType.TransportError,
       });
+      log.warn(
+        `${this.logId}: experimental transport toast displayed, flushing transport statistics before resetting`,
+        updatedStats
+      );
+      updatedStats = AggregatedStats.createEmpty();
       updatedStats.lastToastTimestamp = Date.now();
     }
     AggregatedStats.store(updatedStats, name);

ts/util/getServiceIdsForE164s.ts

@@ -43,5 +43,8 @@ export async function getServiceIdsForE164s(
     e164s,
     acisAndAccessKeys,
     returnAcisWithoutUaks: false,
+    useLibsignal: window.Signal.RemoteConfig.isEnabled(
+      'desktop.cdsiViaLibsignal'
+    ),
   });
 }