protected override async Task <int> CreateFreeChannelAsync()
{
var config = Settings.Local;
var socket = new Socket(SocketType.Stream, ProtocolType.Tcp);
var aes = Aes.Create();
var d = new Rfc2898DeriveBytes(Settings.Password, Settings.SaltSize, Settings.Iterations);
aes.Key = d.GetBytes(Settings.KeySize);
var dataPacker = new DataPacker(aes.CreateEncryptor()); // TODO:???
var dataUnpacker = new DataUnpacker(aes.CreateDecryptor()); // TODO:???
await socket.ConnectAsync(config.PeerAddress, config.PeerPort);
using (var ns = new NetworkStream(socket, ownsSocket: false))
{
await ns.WriteAsync(d.Salt, 0, d.Salt.Length);
await ns.WriteAsync(aes.IV, 0, aes.IV.Length);
}
return(AddChannel(socket, dataPacker, dataUnpacker));
}
private void Negotiate(Socket channelSocket)
{
using (var ns = new NetworkStream(channelSocket, ownsSocket: false))
{
var salt = new byte[Settings.SaltSize];
var iv = new byte[16];//TODO:???
FillBuffer(ns, salt);
FillBuffer(ns, iv);
var d = new Rfc2898DeriveBytes(Settings.Password, salt, Settings.Iterations);
var aes = Aes.Create();
aes.Key = d.GetBytes(16);
aes.IV = iv;
var dataPacker = new DataPacker(aes.CreateEncryptor()); // TODO:????
var dataUnpacker = new DataUnpacker(aes.CreateDecryptor()); // TODO:????
var channelId = AddChannel(channelSocket, dataPacker, dataUnpacker);
}
}