From 1b5e18b8e6a2ceea073d3f6b99ff3cbc9d0deb5d Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@apple.com>
Date: Tue, 28 Mar 2023 20:46:12 -0400
Subject: [PATCH] Make implementing handleBDXTransferSessionEndForNodeID
 actually optional. (#25871)

It's marked @optional in the API, but we're calling it unconditionally.
---
 .../Framework/CHIP/MTROTAProviderDelegateBridge.mm   | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/darwin/Framework/CHIP/MTROTAProviderDelegateBridge.mm b/src/darwin/Framework/CHIP/MTROTAProviderDelegateBridge.mm
index d85222411918fe..3caacafae59533 100644
--- a/src/darwin/Framework/CHIP/MTROTAProviderDelegateBridge.mm
+++ b/src/darwin/Framework/CHIP/MTROTAProviderDelegateBridge.mm
@@ -316,11 +316,13 @@ CHIP_ERROR OnTransferSessionEnd(TransferSession::OutputEvent & event)
         auto nodeId = @(mNodeId.Value());
 
         auto strongDelegate = mDelegate;
-        dispatch_async(mDelegateNotificationQueue, ^{
-            [strongDelegate handleBDXTransferSessionEndForNodeID:nodeId
-                                                      controller:controller
-                                                           error:[MTRError errorForCHIPErrorCode:error]];
-        });
+        if ([strongDelegate respondsToSelector:@selector(handleBDXTransferSessionEndForNodeID:controller:error:)]) {
+            dispatch_async(mDelegateNotificationQueue, ^{
+                [strongDelegate handleBDXTransferSessionEndForNodeID:nodeId
+                                                          controller:controller
+                                                               error:[MTRError errorForCHIPErrorCode:error]];
+            });
+        }
 
         ResetState();
         return CHIP_NO_ERROR;