sctp_proto/param/
param_state_cookie.rs

1use super::{param_header::*, param_type::*, *};
2
3use rand::Rng;
4
5#[derive(Default, Debug, Clone, PartialEq)]
6pub(crate) struct ParamStateCookie {
7    pub(crate) cookie: Bytes,
8}
9
10/// String makes paramStateCookie printable
11impl fmt::Display for ParamStateCookie {
12    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
13        write!(f, "{}: {:?}", self.header(), self.cookie)
14    }
15}
16
17impl Param for ParamStateCookie {
18    fn header(&self) -> ParamHeader {
19        ParamHeader {
20            typ: ParamType::StateCookie,
21            value_length: self.value_length() as u16,
22        }
23    }
24
25    fn unmarshal(raw: &Bytes) -> Result<Self> {
26        let header = ParamHeader::unmarshal(raw)?;
27        let cookie = raw.slice(PARAM_HEADER_LENGTH..PARAM_HEADER_LENGTH + header.value_length());
28        Ok(ParamStateCookie { cookie })
29    }
30
31    fn marshal_to(&self, buf: &mut BytesMut) -> Result<usize> {
32        self.header().marshal_to(buf)?;
33        buf.extend(self.cookie.clone());
34        Ok(buf.len())
35    }
36
37    fn value_length(&self) -> usize {
38        self.cookie.len()
39    }
40
41    fn clone_to(&self) -> Box<dyn Param + Send + Sync> {
42        Box::new(self.clone())
43    }
44
45    fn as_any(&self) -> &(dyn Any + Send + Sync) {
46        self
47    }
48}
49
50impl ParamStateCookie {
51    pub(crate) fn new() -> Self {
52        let mut cookie = BytesMut::new();
53        cookie.resize(32, 0);
54        rand::rng().fill(cookie.as_mut());
55
56        ParamStateCookie {
57            cookie: cookie.freeze(),
58        }
59    }
60}
sctp_proto/param/param_state_cookie.rs

sctp_proto/param/
param_state_cookie.rs
