Stress: leaking Microsoft.AspNet.Server.Kestrel.Http.SocketOutput+ThisWriteReq as they are rooted by strong handles

[KKhurin]

[KKhurin]

This exception causes the handle to not get closed:
(16f4.cd0): CLR exception - code e0434352 (first chance)
KestrelThread.DoPostWork System.Exception:
Error -4077 ECONNRESET connection reset by peer
at Microsoft.AspNet.Server.Kestrel.Networking.Libuv.Check
at Microsoft.AspNet.Server.Kestrel.Networking.Libuv.write
at Microsoft.AspNet.Server.Kestrel.Networking.UvWriteReq.Write
at Microsoft.AspNet.Server.Kestrel.Http.SocketOutput.ThisWriteReq.Write()
at Microsoft.AspNet.Server.Kestrel.Http.SocketOutput.b__0(Object x)
at Microsoft.AspNet.Server.Kestrel.KestrelThread.DoPostWork()

[KKhurin]

Similar leak could happen with the disconnect on Read