I have a message stream, and on that stream I want to send a variety of messages. I understand that protobuf is not self-describing (no tags like XML or JSON) nor does it include the "message type". So I'm trying to figure out how to pack the Type and Body into a single byte buffer in an efficient manner. It would be pretty easy to invent something, but is there some support already built into protobuf? Furthermore, when using the Java API, I would like to avoid a double-copy of the message body, if possible. I need to hand the resulting packet to a message broker API that only accepts byte[] as a body, so I need to pack all of these elements into a single array (hence, my desire to find some clever way to avoid the double-copy). On the receiving end, I need some kind of factory to create the correct message type based on the type embedded in the data.
I see that this question has been asked in different ways, with various suggestions proffered, but I am having trouble finding out if there is support for this kind of thing built into protobuf or a "Best Practice" to accomplish this, both in Java and C++. Maybe even a helper library? Thanks john -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/protobuf. For more options, visit https://groups.google.com/d/optout.
