From 9fa293c892dbc272e64c01abbce26b65fbd66599 Mon Sep 17 00:00:00 2001
From: Chris Patterson <chris@phatboyg.com>
Date: Mon, 15 May 2023 22:34:33 -0500
Subject: [PATCH] Fixed? #4364 Handle InvalidOperationException when a message
 is already being canceled by Azure Service Bus

---
 .../ServiceBusSendTransportContext.cs                         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Transports/MassTransit.Azure.ServiceBus.Core/AzureServiceBusTransport/ServiceBusSendTransportContext.cs b/src/Transports/MassTransit.Azure.ServiceBus.Core/AzureServiceBusTransport/ServiceBusSendTransportContext.cs
index 187f1dfa174..ffc21c8857c 100644
--- a/src/Transports/MassTransit.Azure.ServiceBus.Core/AzureServiceBusTransport/ServiceBusSendTransportContext.cs
+++ b/src/Transports/MassTransit.Azure.ServiceBus.Core/AzureServiceBusTransport/ServiceBusSendTransportContext.cs
@@ -148,6 +148,10 @@ async Task CancelScheduledSend(SendEndpointContext clientContext, Guid tokenId,
             {
                 MassTransit.LogContext.Debug?.Log("CANCEL {DestinationAddress} {TokenId} message not found", EntityName, tokenId);
             }
+            catch (InvalidOperationException exception) when (exception.Message.Contains("already being cancelled"))
+            {
+                MassTransit.LogContext.Debug?.Log("CANCEL {DestinationAddress} {TokenId} message already being canceled", EntityName, tokenId);
+            }
         }
 
         static bool IsCancelScheduledSend<T>(AzureServiceBusSendContext<T> context, out Guid tokenId, out long sequenceNumber)