gotatun 0.4.0

an implementation of the WireGuard® protocol designed for portability and speed
Documentation 
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// Copyright (c) 2025 Mullvad VPN AB. All rights reserved.
// SPDX-License-Identifier: BSD-3-Clause

use std::{
    io::{self},
    net::SocketAddr,
};

use crate::{
    packet::{Packet, PacketBufPool},
    udp::{UdpRecv, UdpSend},
};

impl UdpSend for super::UdpSocket {
    type SendManyBuf = ();

    async fn send_to(&self, packet: Packet, target: SocketAddr) -> io::Result<()> {
        self.inner.send_to(&packet, target).await?;
        Ok(())
    }

    fn local_addr(&self) -> io::Result<Option<SocketAddr>> {
        super::UdpSocket::local_addr(self).map(Some)
    }
}

impl UdpRecv for super::UdpSocket {
    type RecvManyBuf = ();

    async fn recv_from(&mut self, pool: &mut PacketBufPool) -> io::Result<(Packet, SocketAddr)> {
        let mut buf = pool.get();
        let (n, src) = self.inner.recv_from(&mut buf).await?;
        buf.truncate(n);
        Ok((buf, src))
    }
}