gRPC tunnel stream closed

[Manish Khandelwal]

Hi Josh, 

I am trying to implement grpc tunnel bidirectional steaming using c++.

After register RPC done, received tag id 1 from grpc collector.

Client need to write tunnel stream with tag and no data, as per below implementation.

https://github.com/openconfig/reference/blob/master/rpc/gnmi/img/grpctunnel-client-to-server-detail.png

Receiving tag as 0 and no data from server, Not sure why the tunnel stream is getting closed.

Not using writedone() or writeFinish()

Please help me out in understanding and resolving this issue that why server is closing the tunnel stream.

Thanks

Manish Khandelwal