From f1516bbf1361c769e89e3904af5d7af658234fec Mon Sep 17 00:00:00 2001
From: John Salem <josalem@microsoft.com>
Date: Tue, 20 Aug 2019 09:40:11 -0700
Subject: [PATCH] Fix IPC response for CollectTracingV2 (dotnet/coreclr#26224)

Commit migrated from https://github.com/dotnet/coreclr/commit/0467a570d1e37fccd125dac4fb6953c37458ab41
---
 src/coreclr/src/vm/eventpipeprotocolhelper.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/coreclr/src/vm/eventpipeprotocolhelper.cpp b/src/coreclr/src/vm/eventpipeprotocolhelper.cpp
index 7cac9d0..b18fa16 100644
--- a/src/coreclr/src/vm/eventpipeprotocolhelper.cpp
+++ b/src/coreclr/src/vm/eventpipeprotocolhelper.cpp
@@ -292,6 +292,13 @@ void EventPipeProtocolHelper::CollectTracing2(DiagnosticsIpc::IpcMessage& messag
         delete payload;
         delete pStream;
     }
+    else
+    {
+        DiagnosticsIpc::IpcMessage successResponse;
+        if (successResponse.Initialize(DiagnosticsIpc::GenericSuccessHeader, sessionId))
+            successResponse.Send(pStream);
+        EventPipe::StartStreaming(sessionId);
+    }
 }
 
 #endif // FEATURE_PERFTRACING
-- 
2.7.4