syntax="proto3";optionjava_multiple_files=true;optionjava_package="org.apache.skywalking.apm.network.proto";import"KeyWithIntegerValue.proto";//register service for ApplicationCode, this service is called when service starts.serviceApplicationRegisterService{rpcapplicationCodeRegister(Application)returns(ApplicationMapping){}}messageApplication{stringapplicationCode=1;}messageApplicationMapping{KeyWithIntegerValueapplication=1;}