Method encode

perro_source/api_modules/perro_networking/src/tcp.rs:21–39

(&self)

    pub fn new(app: impl Into<String>, protocol: impl Into<String>, version: u16) -> Self {
        Self {
            app: app.into(),
            protocol: protocol.into(),
            version,
        }
    }

    pub fn encode(&self) -> NetResult<Vec<u8>> {
        let app = self.app.as_bytes();
        let protocol = self.protocol.as_bytes();
        if app.len() > u16::MAX as usize || protocol.len() > u16::MAX as usize {
            return Err(NetError::new(
                NetErrorKind::Handshake,
                "handshake text too large",
            ));
        }

        let mut out = Vec::with_capacity(Self::MAGIC.len() + 6 + app.len() + protocol.len());
        out.extend_from_slice(Self::MAGIC);
        out.extend_from_slice(&self.version.to_be_bytes());
        out.extend_from_slice(&(app.len() as u16).to_be_bytes());
        out.extend_from_slice(&(protocol.len() as u16).to_be_bytes());
        out.extend_from_slice(app);