Correct way to create connections and make gRPC calls

[16.shi...@gmail.com]

I am using gRPC with ruby on both client and server side. I was managing the client connection in this way:

1. Create the connection once when application starts -> 

@SEARCH_CLIENT = Search::HouseSearchService::Stub.new('localhost:50052', :this_channel_is_insecure)

2. Use the client instance to make gRPC calls during runtime. 

@SEARCH_CLIENT.search(request)

The problem that I am facing in this scheme is that whenever I restart my service, the gRPC call returns a GRPC BadStatus 14

Is it okay to create the connection and make the call together everytime during runtime for each call? Or should I just put some error handling myself to re-connect in case I get an error?

[Michael Lumish]

Actually, you don't need to do either of those. When the client loses the connection, it will automatically attempts to reconnect. Status code 14 is the UNAVAILABLE status (https://github.com/grpc/grpc/blob/master/include/grpc/impl/codegen/status.h#L144), which is transient. When you get that error, you should just retry the call with the same client (assuming that the server logic can handle retries).

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