From df2a334d7cb9fc47dd291f1f7e1b1c965cd99481 Mon Sep 17 00:00:00 2001
From: Slavasil <subvia@proton.me>
Date: Mon, 26 Oct 2026 00:00:19 +0300
Subject: [PATCH] fix broadcast id mismatch for matchmaking channel

---
 main-server/app/channels/matchmaking_channel.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/main-server/app/channels/matchmaking_channel.rb b/main-server/app/channels/matchmaking_channel.rb
index cc6d487..0782d05 100644
--- a/main-server/app/channels/matchmaking_channel.rb
+++ b/main-server/app/channels/matchmaking_channel.rb
@@ -8,7 +8,10 @@
 #   5. Disconnecting (or sending { action: "stop" }) cancels the search.
 class MatchmakingChannel < ApplicationCable::Channel
   def subscribed
-    stream_for current_user
+    # NB: must mirror MatchmakingService.broadcast, which uses
+    # broadcast_to(user_id) → "matchmaking:<id>". stream_for(current_user)
+    # would use the GlobalID-based name and never receive those broadcasts.
+    stream_from "matchmaking:#{current_user.id}"
 
     # If a match was found while this user had no subscription
     # (e.g. brief reconnect), deliver it now — exactly once.