From ff81625e46b61dbf198bd84feee8fe7c6e5f8caa Mon Sep 17 00:00:00 2001
From: Simon Woolf <simon.woolf@ably.com>
Date: Mon, 24 Jun 2024 16:43:56 +0100
Subject: [PATCH] Fix RTL13a (stop auto-attaching from inappropriate states)

---
 src/common/lib/client/realtimechannel.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/common/lib/client/realtimechannel.ts b/src/common/lib/client/realtimechannel.ts
index e0a561492..396374875 100644
--- a/src/common/lib/client/realtimechannel.ts
+++ b/src/common/lib/client/realtimechannel.ts
@@ -539,9 +539,11 @@ class RealtimeChannel extends EventEmitter {
            * attaching, go into suspended, fail messages, and wait a few seconds
            * before retrying */
           this.notifyState('suspended', detachErr);
-        } else {
+        } else if (this.state === 'attached' || this.state === 'suspended') {
+          // RTL13a
           this.requestState('attaching', detachErr);
         }
+        // else no action (detached in initialized, detached, or failed state is a noop)
         break;
       }