How to use u32?

[icepng]

Just define u64 and i64 in Integer. How to read u32 in the serialization buffer?

pub enum Integer {
    /// Unsigned int representation
    Uint64(u64),
    /// Signed int representation
    Int64(i64),
}

// I try to read, just support u64?

let restored = Message::unpack(&mut cursor).expect("Message unpack failed");
restored.as_integer().expect("s").as_u64();

[shogo82148]

Your question is not about specification of MessagePack.
I recommend you to ask it at QA site such as StackOverflow.