protected override bool TryGetEndPointFor(Socket client, out EndPoint endPoint)
{
endPoint = null;
try
{
var socks4RequestBuffer = new byte[16];
var bytesReceived = client.Receive(socks4RequestBuffer);
var request = Socks4Helper.GetRequest(socks4RequestBuffer.Take(bytesReceived).ToArray());
var host = request.Address;
var port = request.Port;
var ip = IPAddress.Any;
if (!IPAddress.TryParse(host, out ip))
{
var ips = Dns.GetHostAddresses(host);
if (ips.Length == 0)
{
return(false);
}
ip = ips[0];
}
endPoint = new IPEndPoint(ip, port);
return(true);
}
catch
{
return(false);
}
}
protected override void EndConnect(IAsyncResult e)
{
var sockets = e.AsyncState as Socket[];
var client = sockets[0];
var server = sockets[1];
try
{
base.EndConnect(e);
if (server.Connected)
{
var response = new Socks4Packet(Socks4ServiceCode.Accepted);
var responseBytes = Socks4Helper.GetResponse(response);
client.Send(responseBytes);
}
}
catch
{
DisposeSocket(client);
DisposeSocket(server);
}
}
