PR review

Author: lukebakken

projects/RabbitMQ.Client/client/api/IEndpointResolverExtensions.cs

@@ -42,7 +42,7 @@ public static async Task<T> SelectOneAsync<T>(this IEndpointResolver resolver,
             Func<AmqpTcpEndpoint, CancellationToken, Task<T>> selector, CancellationToken cancellationToken)
         {
             var t = default(T);
-            List<Exception> exceptions = null;
+            List<Exception> exceptions = [];
             foreach (AmqpTcpEndpoint ep in resolver.All())
             {
                 try
@@ -53,23 +53,24 @@ public static async Task<T> SelectOneAsync<T>(this IEndpointResolver resolver,
                         return t;
                     }
                 }
-                // TODO immediate re-throw vs trying the next host?
-                catch (TaskCanceledException)
+                catch (OperationCanceledException ex)
                 {
-                    throw;
-                }
-                catch (AggregateException)
-                {
-                    throw;
+                    if (cancellationToken.IsCancellationRequested)
+                    {
+                        throw;
+                    }
+                    else
+                    {
+                        exceptions.Add(ex);
+                    }
                 }
                 catch (Exception e)
                 {
-                    exceptions ??= new List<Exception>(1);
                     exceptions.Add(e);
                 }
             }
 
-            if (Object.Equals(t, default(T)) && exceptions?.Count > 0)
+            if (Object.Equals(t, default(T)) && exceptions.Count > 0)
             {
                 throw new AggregateException(exceptions);
             }