IDL for message using Protocol Buffer

message.proto

syntax = "proto3"; // use version proto3

package Demo.Message; // will be placed in a namespace matching the package name if csharp_namespace is not specified
option csharp_namespace = "Demo.Message";
import "google/protobuf/timestamp.proto"; // for field of timestamp

// alert reuqest
message AlertRequest {
	int32 Type =1;
	string Uid =2;
	string MsgValue =3;
	int32 Severity =4;
	google.protobuf.Timestamp DateTime =5;
}

// alert response
message AlertResponse {
   string Ack =1;
   string ReturnCode =2;
}