103     std::string arg = argv[i];  in main()  local
104     if (arg.find(arg_grpc_root_server_port) == 0) {  in main()
105       auto port_number = arg.substr(arg_grpc_root_server_port.size());  in main()
108     if (arg.find(arg_grpc_server_port) == 0) {  in main()
109       auto port_number = arg.substr(arg_grpc_server_port.size());  in main()
112     if (arg.find(arg_rootcanal_port) == 0) {  in main()
113       auto port_number = arg.substr(arg_rootcanal_port.size());  in main()
116     if (arg.find(arg_btsnoop_path) == 0) {  in main()
117       btsnoop_path = arg.substr(arg_btsnoop_path.size());  in main()
120     if (arg.find(arg_signal_port) == 0) {  in main()
121       auto port_number = arg.substr(arg_signal_port.size());  in main()