Error after load balancing， OnClientConnected NetUV.Core.Native.OperationException: ENOTCONN (ENOTCONN) : ENOTCONN : socket is not connected

### Description

The following problem with using Aliyun's load balancing

### Steps to Reproduce

Enable 2 servers to deploy the same mine pool

### Expected behavior

Load balancing mine pool functioning normally

### Actual behavior

[E] [dash1] OnClientConnected NetUV.Core.Native.OperationException: ENOTCONN (ENOTCONN) : ENOTCONN : socket is not connected
   at NetUV.Core.Native.NativeMethods.ThrowOperationException(uv_err_code error)
   at NetUV.Core.Native.NativeMethods.TcpGetPeerName(IntPtr handle)
   at NetUV.Core.Handles.Tcp.GetPeerEndPoint()
   at MiningCore.Stratum.StratumServer.OnClientConnected(Tcp con, ValueTuple`2 endpointConfig, Loop loop)    at NetUV.Core.Native.NativeMethods.ThrowOperationException(uv_err_code error)
   at NetUV.Core.Native.NativeMethods.TcpGetPeerName(IntPtr handle)
   at NetUV.Core.Handles.Tcp.GetPeerEndPoint()
   at MiningCore.Stratum.StratumServer.OnClientConnected(Tcp con, ValueTuple`2 endpointConfig, Loop loop)


### Version

ubuntu 16.04 Release0.24

### Additional Information
None
