Start of ping sketch
diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
index faadd82..2483626 100644
--- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
+++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters
@@ -274,6 +274,9 @@
<ClCompile Include="..\..\..\src\core\surface\channel_create.c">
<Filter>src\core\surface</Filter>
</ClCompile>
+ <ClCompile Include="..\..\..\src\core\surface\channel_ping.c">
+ <Filter>src\core\surface</Filter>
+ </ClCompile>
<ClCompile Include="..\..\..\src\core\surface\completion_queue.c">
<Filter>src\core\surface</Filter>
</ClCompile>