rustls 0.20.6

Rustls is a modern TLS library written in Rust.
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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) -> Option<Self> {
        let typ = u8::read(r)?;

        if typ == 1 && !r.any_left() {
            Some(Self {})
        } else {
            None
        }
    }
}