Example showing flatbuffer use over network (c++)?

[Shahbaz Chaudhary]

As I mentioned in my earlier message, I have written a set of definitions for a number of messages and now I'm trying to do an end-to-end test. I'm not clear on how framing works for flatbuffers messages. If I'm reading messages off the wire, am I responsible for getting the right sized chunks of bytes and feeding them to flatbuffers infrastructure or can fb take a look at the first X bytes and figure out the message format?

This and several other questions could be best answered with a more complete example (I'm also relatively new to c++ so that might be tripping me up as well). I don't see any blog posts or 3rd party tutorials, but please let me know if i missed something.

[Stewart Miles]

If you're feeling ambitious (may be a bit much since you're new to C++) you could take a look at the multiplayer support in Pie Noon which uses flatbuffers to communicate between each client (controller) and the server application.

https://github.com/google/pienoon/blob/master/src/flatbufferschemas/multiplayer.fbs is used for communication.

https://github.com/google/pienoon/blob/master/src/gpg_multiplayer.cpp SendMessage() and GetNextMessage() contain the send / receive code.

Cheers,

Stewart

On Tue, Sep 8, 2015 at 10:36 AM, Shahbaz Chaudhary <shah...@gmail.com> wrote:

As I mentioned in my earlier message, I have written a set of definitions for a number of messages and now I'm trying to do an end-to-end test. I'm not clear on how framing works for flatbuffers messages. If I'm reading messages off the wire, am I responsible for getting the right sized chunks of bytes and feeding them to flatbuffers infrastructure or can fb take a look at the first X bytes and figure out the message format?

This and several other questions could be best answered with a more complete example (I'm also relatively new to c++ so that might be tripping me up as well). I don't see any blog posts or 3rd party tutorials, but please let me know if i missed something.

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[Shahbaz Chaudhary]

Thanks Stewart,

Am I correct in thinking that messages framing is handled outside of the flatbuffer framework? For instance, MessageReceivedCallback seems to contain a single message received off the wire. However, can fb be used to read raw bytes and have _it_ figure out where one message finishes and the other starts?

[Stewart Miles]

Yeah the data ends up being framed in a TCP/IP packet which encodes the size of the payload.  We're only sending one flatbuffer in each message, if you want to send more message types you could consider using a union.