If the sender is sending any number of different data types that have been
serialized across the network, how does one know which type is coming in so
that it can be pulled off using FlatArrayMessageReader's::getRoot<>?
E.g., say this while loop is constantly reading serialized data from the
network and results in a vector of message buffers.
for (auto& msg : messages) {
auto arr = kj::ArrayPtr<const capnp::word>(
reinterpret_cast<const capnp::word*>(msg),
size / sizeof(capnp::word));
capnp::FlatArrayMessageReader reader(arr);
// how would one know what type to use here?
auto msg = reader.getRoot<?>();
}
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