public void BeginConnectProxy(EndPoint remoteEP, AsyncCallback callback, object state)
{
var st = new Socks5State();
st.Callback = callback;
st.AsyncState = state;
ProxyEndPoint = remoteEP;
SocketUtil.BeginConnectTcp(remoteEP, ConnectCallback, st);
}
public void BeginConnectDest(EndPoint destEndPoint, AsyncCallback callback, object state)
{
DestEndPoint = destEndPoint;
int len = Socks5Util.HeaderAddrLength(destEndPoint);
byte[] request = new byte[len + 3];
Socks5Util.FillHeaderAddr(request, 3, destEndPoint);
// 构造request包剩余部分
request[0] = 5;
request[1] = 1;
request[2] = 0;
var st = new Socks5State();
st.Callback = callback;
st.AsyncState = state;
_remote.BeginSend(request, 0, request.Length, 0, Socks5RequestSendCallback, st);
}
public void BeginConnectDest(EndPoint destEndPoint, AsyncCallback callback, object state)
{
DestEndPoint = destEndPoint;
byte[] request = null;
byte atyp = 0;
int port;
var dep = destEndPoint as DnsEndPoint;
if (dep != null)
{
// is a domain name, we will leave it to server
atyp = 3; // DOMAINNAME
var enc = Encoding.UTF8;
var hostByteCount = enc.GetByteCount(dep.Host);
request = new byte[4 + 1/*length byte*/ + hostByteCount + 2];
request[4] = (byte)hostByteCount;
enc.GetBytes(dep.Host, 0, dep.Host.Length, request, 5);
port = dep.Port;
}
else
{
switch (DestEndPoint.AddressFamily)
{
case AddressFamily.InterNetwork:
request = new byte[4 + 4 + 2];
atyp = 1; // IP V4 address
break;
case AddressFamily.InterNetworkV6:
request = new byte[4 + 16 + 2];
atyp = 4; // IP V6 address
break;
default:
throw new Exception(I18N.GetString("Proxy request failed"));
}
port = ((IPEndPoint) DestEndPoint).Port;
var addr = ((IPEndPoint)DestEndPoint).Address.GetAddressBytes();
Array.Copy(addr, 0, request, 4, request.Length - 4 - 2);
}
// 构造request包剩余部分
request[0] = 5;
request[1] = 1;
request[2] = 0;
request[3] = atyp;
request[request.Length - 2] = (byte) ((port >> 8) & 0xff);
request[request.Length - 1] = (byte) (port & 0xff);
var st = new Socks5State();
st.Callback = callback;
st.AsyncState = state;
_remote.BeginSend(request, 0, request.Length, 0, Socks5RequestSendCallback, st);
}
public FakeAsyncResult(IAsyncResult orig, Socks5State state)
{
r = orig;
innerState = state;
}