🚀 go-pugleaf

Yes, you can send back a return value to the caller.  You need
something like this (I/O error checking omitted):

// Program sending a RPC call.

int DerivedRpcWriter::foobar(int data) {
    int reply;

    server() << RpcHdr(FOOBAR) << data;
    server() >> reply;
    return reply;
}

// Another program receiving the RPC call and replying to it.  This
// function is a static member function (no 'this'), so that's why
// client and everything else is passed in as arguments.

void DerivedRpcReader::foobar(RpcReader*, RpcHdr&, rpcstream& client) {
    int data, reply;

    client >> data;
    ...
    client << reply << flush;
}

I haven't had time to start using the Dispatch library in a new
project, so I don't have a more complete example yet.
--
John Interrante / interran@lurch.stanford.edu