syntax = "proto3"; service gRPCComServeFunc { rpc sendMessage (MessageRequest) returns (MessageResponse) {}; } message MessageRequest{ map msg = 1; } message MsgValue{ oneof type { mSingle single_msg = 1; mList list_msg = 2; mDict_keyIsString dict_msg_stringkey = 3; mDict_keyIsInt dict_msg_intkey = 4; } } message mSingle{ oneof type { float float_value = 1; int32 int_value = 2; string str_value = 3; } } message mList{ repeated MsgValue list_value = 1; } message mDict_keyIsString{ map dict_value = 1; } message mDict_keyIsInt{ map dict_value = 1; } message MessageResponse{ string msg = 1; }