Files
latls/src/extensions/extension_data/alpn.rs

40 lines
1.1 KiB
Rust

use crate::{
ProtocolError,
buffer::CryptoBuffer,
parse_buffer::{ParseBuffer, ParseError},
};
#[derive(Debug, Clone)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct AlpnProtocolNameList<'a> {
pub protocols: &'a [&'a [u8]],
}
impl<'a> AlpnProtocolNameList<'a> {
pub fn parse(buf: &mut ParseBuffer<'a>) -> Result<Self, ParseError> {
let list_len = buf.read_u16()? as usize;
let mut list_buf = buf.slice(list_len)?;
while !list_buf.is_empty() {
let name_len = list_buf.read_u8()? as usize;
if name_len == 0 {
return Err(ParseError::InvalidData);
}
let _name = list_buf.slice(name_len)?;
}
Ok(Self { protocols: &[] })
}
pub fn encode(&self, buf: &mut CryptoBuffer) -> Result<(), ProtocolError> {
buf.with_u16_length(|buf| {
for protocol in self.protocols {
buf.push(protocol.len() as u8)
.map_err(|_| ProtocolError::EncodeError)?;
buf.extend_from_slice(protocol)?;
}
Ok(())
})
}
}