From f51b91c87d124d582e2fb8a58cbaec30838e30e0 Mon Sep 17 00:00:00 2001
From: "Jeremy D. Miller" <jeremydmiller@yahoo.com>
Date: Tue, 17 Jun 2025 18:07:32 -0500
Subject: [PATCH] Hardening SNS protocol against the new null collection
 behavior. Closes GH-1503

---
 .../AWS/Wolverine.AmazonSns/Internal/SnsSenderProtocol.cs   | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Transports/AWS/Wolverine.AmazonSns/Internal/SnsSenderProtocol.cs b/src/Transports/AWS/Wolverine.AmazonSns/Internal/SnsSenderProtocol.cs
index fc01c1520..434119bcc 100644
--- a/src/Transports/AWS/Wolverine.AmazonSns/Internal/SnsSenderProtocol.cs
+++ b/src/Transports/AWS/Wolverine.AmazonSns/Internal/SnsSenderProtocol.cs
@@ -90,14 +90,14 @@ public OutgoingSnsBatch(AmazonSnsTopic topic, ILogger logger, IEnumerable<Envelo
     public async Task ProcessSuccessAsync(ISenderCallback callback, PublishBatchResponse response,
         OutgoingMessageBatch batch)
     {
-        if (!response.Failed.Any())
+        if (response.Failed == null || !response.Failed.Any())
         {
             await callback.MarkSuccessfulAsync(batch);
         }
         else
         {
             var fails = new List<Envelope>();
-            foreach (var fail in response.Failed)
+            foreach (var fail in response.Failed ?? [])
             {
                 if (_envelopes.TryGetValue(fail.Id, out var env))
                 {
@@ -106,7 +106,7 @@ public async Task ProcessSuccessAsync(ISenderCallback callback, PublishBatchResp
             }
 
             var successes = new List<Envelope>();
-            foreach (var success in response.Successful)
+            foreach (var success in response.Successful ?? [])
             {
                 if (_envelopes.TryGetValue(success.Id, out var env))
                 {