CBOR serialization and deserialization on different platforms

I write a client-server application where the server is a Linux machine, and the client is a Windows machine. I serialize data using CBOR before sending them over a network.

I serialized data on the server and obtained "\x83\x01\x00\xf4". However, when trying to deserialize it on Windows, I get ASSERT: "recursed->type == CborInvalidType" in file C:\Users\qt\qtbase\src\3rdparty\tinycbor\src\cborparser.c, line 633 error. When I tested it in a Linux-to-Linux setup, it worked fine.

Here is a very simple application that demonstrates the error (runs or Linux, crashes on Windows):

#include <QCoreApplication>
#include <QCborStreamReader>
#include <QCborStreamWriter>

enum PacketType
{
    packet,
    sharedVar,
    sigcom
};

enum TypeName
{
    whatever
};

// this is how I serialize data on Linux
QByteArray serializeBOOL(bool t, TypeName typeName)
{
    QByteArray arr;
    QCborStreamWriter writer(&arr);

    writer.startArray(3);
    writer.append(PacketType::sharedVar);
    writer.append(typeName);
    writer.append(t);
    writer.endArray();

    return arr;
}

PacketType getPacketType(const QByteArray &arr)
{
    QCborStreamReader reader(arr);

    reader.enterContainer();
    PacketType type = static_cast<PacketType>(reader.toInteger());
    reader.leaveContainer();

    return type;
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QByteArray arr = serializeBOOL(false, whatever);

    getPacketType(arr);

    return a.exec();
}

I thought CBOR could be used across platforms similarly to JSON. Is that not the case?

The problem was that you could not leave the container if you were not at the end.

The solution was adding 3x reader.next() into PacketType getPacketType(const QByteArray &arr). Another option would be not to leave a container.

PacketType getPacketType(const QByteArray &arr)
{
    QCborStreamReader reader(arr);

    reader.enterContainer();
    PacketType type = static_cast<PacketType>(reader.toInteger());
    reader.next();
    reader.next();
    reader.next();
    reader.leaveContainer();

    return type;
}