How to connect grpc server to another grpc server and send the response to grpc client

[Harith Danula Vithanage]

Im using golang with grpc to build a supply chain management system. it will be using plugin-type architecture. so my concern is that I have client side which will request data from specific plugin. so that all request should go the core and the core should redirect it to the specific plugin and get the response and send it to  the client. 

i try many ways to do it but nothing is working ? please help me