use MSC4174

Author: p1gp1g

src/matrix/push/Pusher.ts

@@ -56,6 +56,19 @@ export class Pusher {
         });
     }
 
+    static webpushPusher(appId: string, pushkey: string, data: IPusherData): Pusher {
+        return new Pusher({
+            kind: "webpush",
+            append: true,   // as pushkeys are shared between multiple users on one origin
+            data,
+            pushkey,
+            app_id: appId,
+            app_display_name: "Hydrogen",
+            device_display_name: "Hydrogen",
+            lang: "en"
+        });
+    }
+
     static createDefaultPayload(sessionId: string): {session_id: string} {
         return {session_id: sessionId};
     }

src/platform/web/dom/NotificationService.js

@@ -37,8 +37,7 @@ export class NotificationService {
                 events_only: true,
                 default_payload: defaultPayload
             };
-            return pusherFactory.httpPusher(
-                this._pushConfig.gatewayUrl,
+            return pusherFactory.webpushPusher(
                 this._pushConfig.appId,
                 pushkey,
                 data