Languages on different architectures might serialize the 32-bit unsigned int 15 as the byte sequences 00 00 00 0F (big-endian) or 0F 00 00 00 (little-endian) but network protocols generally prefer the former.
pub fn to_network_byte_order(n: u32) -> u32 {
n.to_be()
}
pub fn from_network_byte_order(n: u32) -> u32 {
u32::from_be(n)
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_to_network_byte_order() {
let expected: u32 = 0xFFAABBCC;
let nbo = to_network_byte_order(expected);
if cfg!(target_endian = "big") {
assert_eq!(expected, nbo);
} else {
assert_eq!(expected.swap_bytes(), nbo);
}
let actual = from_network_byte_order(nbo);
assert_eq!(expected, actual);
}
}
u32 is a 32-bit unsigned integer; i32 is the signed version.
This post is just a code snippet written by someone getting started.
No promises are made about code quality.
Version: rustc 1.0.0-beta.4 (850151a75 2015-04-30) (built 2015-04-30)
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