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use crate::*;
/// Laxly identified payload of an IP packet (potentially incomplete).
///
/// To check if the payload is complete check the `incomplete` field.
#[derive(Clone, Debug, Eq, PartialEq, Hash, PartialOrd, Ord)]
pub struct LaxIpPayloadSlice<'a> {
/// True if the length field in the IP header indicates more data
/// should be present but it was not (aka the packet data is cut off).
///
/// Note that this different from fragmentation. If a packet is
/// fragmented the length field in the individual IP headers is
/// still correctly set.
pub incomplete: bool,
/// Identifying content of the payload.
pub ip_number: IpNumber,
/// True if the payload is not complete and has been fragmented.
///
/// This can occur if the IPv4 incdicates that the payload
/// has been fragmented or if there is an IPv6 fragmentation
/// header indicating that the payload has been fragmented.
pub fragmented: bool,
/// Length field that was used to determine the length
/// of the payload (e.g. IPv6 "payload_length" field).
pub len_source: LenSource,
/// Payload
pub payload: &'a [u8],
}
#[cfg(test)]
mod test {
use super::*;
use alloc::format;
#[test]
fn debug() {
let s = LaxIpPayloadSlice {
incomplete: false,
ip_number: IpNumber::UDP,
fragmented: true,
len_source: LenSource::Slice,
payload: &[],
};
assert_eq!(
format!(
"LaxIpPayloadSlice {{ incomplete: {:?}, ip_number: {:?}, fragmented: {:?}, len_source: {:?}, payload: {:?} }}",
s.incomplete,
s.ip_number,
s.fragmented,
s.len_source,
s.payload
),
format!("{:?}", s)
);
}
#[test]
fn clone_eq_hash_ord() {
let s = LaxIpPayloadSlice {
incomplete: false,
ip_number: IpNumber::UDP,
fragmented: true,
len_source: LenSource::Slice,
payload: &[],
};
assert_eq!(s.clone(), s);
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
let a_hash = {
let mut hasher = DefaultHasher::new();
s.hash(&mut hasher);
hasher.finish()
};
let b_hash = {
let mut hasher = DefaultHasher::new();
s.clone().hash(&mut hasher);
hasher.finish()
};
assert_eq!(a_hash, b_hash);
use std::cmp::Ordering;
assert_eq!(s.clone().cmp(&s), Ordering::Equal);
assert_eq!(s.clone().partial_cmp(&s), Some(Ordering::Equal));
}
}