From a035fea47f413cc753545a29718e4806d292eba5 Mon Sep 17 00:00:00 2001
From: Anthony LC <anthony.le-courric@mail.numerique.gouv.fr>
Date: Tue, 11 Aug 2026 16:31:48 +0200
Subject: [PATCH] =?UTF-8?q?fixup!=20=F0=9F=94=92=EF=B8=8F(yprovider)=20rea?=
 =?UTF-8?q?dOnly=20connections=20awareness=20propagation?=
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---
 .../y-provider/src/servers/hocuspocusServer.ts        | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/frontend/servers/y-provider/src/servers/hocuspocusServer.ts b/src/frontend/servers/y-provider/src/servers/hocuspocusServer.ts
index 8070ec85b..7440446fe 100644
--- a/src/frontend/servers/y-provider/src/servers/hocuspocusServer.ts
+++ b/src/frontend/servers/y-provider/src/servers/hocuspocusServer.ts
@@ -3,6 +3,7 @@ import {
   Document,
   MessageReceiver,
   MessageType,
+  OutgoingMessage,
   Server,
 } from '@hocuspocus/server';
 import { validate as uuidValidate, version as uuidVersion } from 'uuid';
@@ -27,6 +28,16 @@ MessageReceiver.prototype.apply = function (
     this.message.decoder.pos = startPos;
 
     if (type === MessageType.Awareness) {
+      /*
+       * Never apply/broadcast the update, but echo an empty one back to the
+       * sender so it doesn't sit silent and trip the client's 30s
+       * reconnect-on-no-message watchdog (close code 1005).
+       */
+      connection.send(
+        new OutgoingMessage(document.name)
+          .createAwarenessUpdateMessage(document.awareness, [])
+          .toUint8Array(),
+      );
       return type;
     }
   }