Enum L4Conn 

pub enum L4Conn {
    Tcp(TcpStream),
    Peeked(Box<dyn AsyncReadWrite + Send>),
    Tls(Box<dyn AsyncReadWrite + Send>),
    Udp(UdpAssoc),
}

Variants

Tcp(TcpStream)

Peeked(Box<dyn AsyncReadWrite + Send>)

Cleartext stream that the listener-side peek prelude has already drained part of, with those bytes rewound into the read side via PeekedStream. Type-erased so vane-core doesn’t need to know the concrete adapter; downstream consumers see the connection from byte zero.

Tls(Box<dyn AsyncReadWrite + Send>)

TLS-terminated stream after a server-side handshake completed. The trait object erases the concrete tokio_rustls::TlsStream type so that vane-core doesn’t need to depend on rustls (the parsing + termination live in vane-engine). AsyncReadWrite is the same trait L4ForwardFetch uses for byte-tunnel I/O, auto-impl’d on any AsyncRead + AsyncWrite + Unpin. See spec/architecture/08-tls.md § TLS termination (L4 → L7 upgrade).

Udp(UdpAssoc)