make packet repr(C)

src/packet.rs

@@ -33,6 +33,7 @@ use std::{mem::size_of, num::TryFromIntError};
 ///
 /// Because the meaning of most fields depend on the command, there are no speaking names for them.
 #[derive(Copy, Clone, Debug, PartialEq, Default)]
+#[repr(C)]
 pub struct Header {
     /// The first two bytes specify which command this packet represents.
     pub command_code: u16,
@@ -57,6 +58,7 @@ pub type Payload = Vec<u8>;
 ///
 /// You may want to use [`crate::Command`] or [`crate::TypedCommand`] instead.
 #[derive(Clone, Debug, PartialEq)]
+#[repr(C)]
 pub struct Packet {
     /// Meta-information for the packed command
     pub header: Header,