using System.Net;
using System.Net.Sockets;

namespace KcpSharp
{
    /// <summary>
    /// A transport to send and receive packets.
    /// </summary>
    public interface IKcpTransport
    {
        /// <summary>
        /// Send a packet into the transport.
        /// </summary>
        /// <param name="packet">The content of the packet.</param>
        /// <param name="cancellationToken">A token to cancel this operation.</param>
        /// <returns>A <see cref="ValueTask"/> that completes when the packet is sent.</returns>
        ValueTask SendPacketAsync(Memory<byte> packet, IPEndPoint endpoint, CancellationToken cancellationToken);

        void SetHandshakeHandler(int size, Func<UdpReceiveResult, ValueTask> handshakeHandler);
    }
}