webrtc_sctp/param/
param_unknown.rs

1use std::any::Any;
2use std::fmt::{Debug, Display, Formatter};
3
4use bytes::{Bytes, BytesMut};
5
6use crate::param::param_header::{ParamHeader, PARAM_HEADER_LENGTH};
7use crate::param::param_type::ParamType;
8use crate::param::Param;
9
10/// This type is meant to represent ANY parameter for un/remarshaling purposes, where we do not have a more specific type for it.
11/// This means we do not really understand the semantics of the param but can represent it.
12///
13/// This is useful for usage in e.g.`ParamUnrecognized` where we want to report some unrecognized params back to the sender.
14#[derive(Clone, Debug, PartialEq, Eq)]
15pub struct ParamUnknown {
16    typ: u16,
17    value: Bytes,
18}
19
20impl Display for ParamUnknown {
21    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
22        write!(f, "ParamUnknown( {} {:?} )", self.header(), self.value)
23    }
24}
25
26impl Param for ParamUnknown {
27    fn header(&self) -> ParamHeader {
28        ParamHeader {
29            typ: ParamType::Unknown {
30                param_type: self.typ,
31            },
32            value_length: self.value.len() as u16,
33        }
34    }
35
36    fn as_any(&self) -> &(dyn Any + Send + Sync) {
37        self
38    }
39
40    fn unmarshal(raw: &Bytes) -> crate::error::Result<Self>
41    where
42        Self: Sized,
43    {
44        let header = ParamHeader::unmarshal(raw)?;
45        let value = raw.slice(PARAM_HEADER_LENGTH..PARAM_HEADER_LENGTH + header.value_length());
46        Ok(Self {
47            typ: header.typ.into(),
48            value,
49        })
50    }
51
52    fn marshal_to(&self, buf: &mut BytesMut) -> crate::error::Result<usize> {
53        self.header().marshal_to(buf)?;
54        buf.extend(self.value.clone());
55        Ok(buf.len())
56    }
57
58    fn value_length(&self) -> usize {
59        self.value.len()
60    }
61
62    fn clone_to(&self) -> Box<dyn Param + Send + Sync> {
63        Box::new(self.clone())
64    }
65}
webrtc_sctp/param/param_unknown.rs

webrtc_sctp/param/
param_unknown.rs
