Protocol Buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data.
Each service has own protocol for send/consume data.
Each service has own directory with 3 simple file:

• SERVICE_NAME_grpc_pb.js [server]
• SERVICE_NAME_pb.js [client]
• SERVICE_NAME.proto [protocol]

##Install You should need GRPC tools installed globally in NPM, so npm install -g grpc-tools

##Extending

• Define a service in a .proto file.
• Add new rpc service commands with requests/responses with messages which describe input/output data Example of simple proto auth service with single rpc command checkConnection:

   
   package auth;
   
   service Auth {
       rpc checkConnection(PingRequest) returns (PongResponse);
   }
   
   message PingRequest {
       string ping = 1;
   }
   
   message PongResponse {
       string pong = 1;
   }

• Run command: grpc_tools_node_protoc --js_out=import_style=commonjs,binary:SERVICE_NAME --grpc_out=grpc_js:SERVICE_NAME --proto_path=./SERVICE_NAME ./SERVICE_NAME/*.proto

If you want to process multiple *.proto files at once, run the sh update_prtbuf_version.sh script found in the root directory. This script will simultaneously update the protobuf version in package.json and rebuild all grpc_pb / pb files.