rustls 0.23.38

Rustls is a modern TLS library written in Rust.
Documentation 
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use alloc::vec::Vec;

use crate::error::InvalidMessage;
use crate::msgs::codec::{Codec, Reader};

#[derive(Debug)]
pub struct ChangeCipherSpecPayload;

impl Codec<'_> for ChangeCipherSpecPayload {
    fn encode(&self, bytes: &mut Vec<u8>) {
        1u8.encode(bytes);
    }

    fn read(r: &mut Reader<'_>) -> Result<Self, InvalidMessage> {
        let typ = u8::read(r)?;
        if typ != 1 {
            return Err(InvalidMessage::InvalidCcs);
        }

        r.expect_empty("ChangeCipherSpecPayload")
            .map(|_| Self {})
    }
}