webrtc_dtls/extension/
extension_use_extended_master_secret.rs

1#[cfg(test)]
2mod extension_use_extended_master_secret_test;
3
4use super::*;
5
6const EXTENSION_USE_EXTENDED_MASTER_SECRET_HEADER_SIZE: usize = 4;
7
8/// ## Specifications
9///
10/// * [RFC 8422]
11///
12/// [RFC 8422]: https://tools.ietf.org/html/rfc8422
13#[derive(Clone, Debug, PartialEq, Eq)]
14pub struct ExtensionUseExtendedMasterSecret {
15    pub(crate) supported: bool,
16}
17
18impl ExtensionUseExtendedMasterSecret {
19    pub fn extension_value(&self) -> ExtensionValue {
20        ExtensionValue::UseExtendedMasterSecret
21    }
22
23    pub fn size(&self) -> usize {
24        2
25    }
26
27    pub fn marshal<W: Write>(&self, writer: &mut W) -> Result<()> {
28        // length
29        writer.write_u16::<BigEndian>(0)?;
30
31        Ok(writer.flush()?)
32    }
33
34    pub fn unmarshal<R: Read>(reader: &mut R) -> Result<Self> {
35        let _ = reader.read_u16::<BigEndian>()?;
36
37        Ok(ExtensionUseExtendedMasterSecret { supported: true })
38    }
39}