nodedb-client 0.1.0

Unified NodeDb trait and remote client for NodeDB Origin and Lite
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// SPDX-License-Identifier: Apache-2.0

use tokio::io::{AsyncRead, AsyncWrite};
use tokio::net::TcpStream;

/// Connection stream — either plain TCP or TLS-wrapped.
pub(super) enum ConnStream {
    Plain(TcpStream),
    Tls(Box<tokio_rustls::client::TlsStream<TcpStream>>),
}

impl AsyncRead for ConnStream {
    fn poll_read(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
        buf: &mut tokio::io::ReadBuf<'_>,
    ) -> std::task::Poll<std::io::Result<()>> {
        match self.get_mut() {
            ConnStream::Plain(s) => std::pin::Pin::new(s).poll_read(cx, buf),
            ConnStream::Tls(s) => std::pin::Pin::new(s).poll_read(cx, buf),
        }
    }
}

impl AsyncWrite for ConnStream {
    fn poll_write(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
        buf: &[u8],
    ) -> std::task::Poll<std::io::Result<usize>> {
        match self.get_mut() {
            ConnStream::Plain(s) => std::pin::Pin::new(s).poll_write(cx, buf),
            ConnStream::Tls(s) => std::pin::Pin::new(s).poll_write(cx, buf),
        }
    }

    fn poll_flush(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<std::io::Result<()>> {
        match self.get_mut() {
            ConnStream::Plain(s) => std::pin::Pin::new(s).poll_flush(cx),
            ConnStream::Tls(s) => std::pin::Pin::new(s).poll_flush(cx),
        }
    }

    fn poll_shutdown(
        self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<std::io::Result<()>> {
        match self.get_mut() {
            ConnStream::Plain(s) => std::pin::Pin::new(s).poll_shutdown(cx),
            ConnStream::Tls(s) => std::pin::Pin::new(s).poll_shutdown(cx),
        }
    }
}