track when we sever the connection

StackExchange.Redis/StackExchange.Redis.csproj

@@ -26,7 +26,7 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.76" />
+    <PackageReference Include="Pipelines.Sockets.Unofficial" Version="0.2.1-alpha.77" />
     <PackageReference Include="System.Threading.Channels" Version="4.5.0" />
   </ItemGroup>
 </Project>
\ No newline at end of file

StackExchange.Redis/StackExchange/Redis/PhysicalBridge.cs

@@ -676,7 +676,7 @@ private WriteResult WriteMessageToServerInsideWriteLock(PhysicalConnection conne
                 {
                     throw ExceptionFactory.MasterOnly(Multiplexer.IncludeDetailInExceptions, message.Command, message, ServerEndPoint);
                 }
-
+                if (message.Command == RedisCommand.QUIT) connection.RecordQuit();
                 SelectDatabaseInsideWriteLock(connection, message);
 
                 if (!connection.TransactionActive)

StackExchange.Redis/StackExchange/Redis/PhysicalConnection.cs

@@ -651,6 +651,10 @@ internal void WriteHeader(RedisCommand command, int arguments, CommandBytes comm
 
             _ioPipe.Output.Advance(offset);
         }
+
+        internal void RecordQuit() // don't blame redis if we fired the first shot
+            => (_ioPipe as SocketConnection)?.TrySetProtocolShutdown(PipeShutdownKind.ProtocolExitClient);
+
         internal static void WriteMultiBulkHeader(PipeWriter output, long count)
         {
             // *{count}\r\n         = 3 + MaxInt32TextLen