public void SendToRaw(IPAddress rawAddress, byte id, byte[] buf, int offset, int size)
{
var headerList = new ArrayList();
var icmpHeader = new IcmpHeader();
icmpHeader.Id = 123;
icmpHeader.Sequence = 24;
icmpHeader.Type = IcmpHeader.EchoReplyType;
icmpHeader.Code = IcmpHeader.EchoReplyCode;
headerList.Add(icmpHeader);
var myheader = new MyProtocol();
myheader.Id = (byte)(byte.MaxValue - id);
headerList.Add(myheader);
byte[] sub = new byte[size];
Array.Copy(buf, offset, sub, 0, size);
var rawpacket = ProtocolHeader.BuildPacket(headerList, sub);
RawSocket.BeginSendTo(rawpacket, 0, rawpacket.Length, SocketFlags.None,
new IPEndPoint(rawAddress, 0),
new AsyncCallback(TransportLayer.Instance().OnRawWriteComplete), rawpacket.Length);
}
public TunnelServer(byte clientId, IPEndPoint targetEndPoint)
{
if (clientId > 127)
{
throw new ArgumentOutOfRangeException("clientId", "should less than 128");
}
_id = (byte)(byte.MaxValue - clientId);
Log.Name = "Server";
_targetPoint = targetEndPoint;
TransportLayer.Instance().Listeners.Add(this);
}
public TunnelClient(byte id, IPAddress remoteAddress, IPEndPoint listenEndPoint)
{
Log.Name = "Client";
_id = id;
_connection = new Connection(remoteAddress, Utils.DetectHost(), null, listenEndPoint);
_connection.Id = _id;
_listenEndPoint = listenEndPoint;
_connection.Log.Name = "ClientListen";
_connection.Start();
TransportLayer.Instance().Listeners.Add(this);
}
private void OnUdpReadComplete(IAsyncResult ar)
{
var state = (object[])ar.AsyncState;
var buf = (byte[])(state[0]);
var endPoint = (EndPoint)(state[1]);
int readed = UdpSocket.EndReceiveFrom(ar, ref endPoint);
_clients.TryAdd(endPoint as IPEndPoint, 1);
Log.T("received form udp {0} bytes", readed);
TransportLayer.Instance().SendToRaw(_rawAddress, Id, buf, 0, readed);
}
