private Socket SocksProxyConnect(Socket socket, IPEndPoint target)
{
try
{
var proxyClient = new Socks4aProxyClient(new TcpClient {
Client = socket
});
var tcpClient = proxyClient.CreateConnection(target.Address.ToString(), target.Port);
return(tcpClient.Client);
}
catch (ProxyException)
{
throw new ProxyRouteException(new ProxyServer(ProxyProtocol.HttpConnect, target.Address, target.Port));
}
}
public void TestSocks4aCreateConnection(string proxyHost, int proxyPort, string destHost, int destPort)
{
Socks4aProxyClient p = new Socks4aProxyClient();
p.ProxyHost = proxyHost;
p.ProxyPort = proxyPort;
TcpClient c = p.CreateConnection(destHost, destPort);
byte[] sendBuf = System.Text.ASCIIEncoding.ASCII.GetBytes("GET / HTTP/1.1\n");
c.GetStream().Write(sendBuf, 0, sendBuf.Length);
byte[] recvBuf = new byte[1024];
c.GetStream().Read(recvBuf, 0, recvBuf.Length);
Console.Out.WriteLine(System.Text.ASCIIEncoding.ASCII.GetString(recvBuf));
c.Close();
}
protected System.Net.Sockets.TcpClient ProxyHandler(string address, int port)
{
IProxyClient proxy;
switch (ProxyType)
{
case ProxyType.Socks5:
proxy = new Socks5ProxyClient(ProxyHost, ProxyPort);
break;
case ProxyType.Socks4:
proxy = new Socks4ProxyClient(ProxyHost, ProxyPort);
break;
case ProxyType.Socks4a:
proxy = new Socks4aProxyClient(ProxyHost, ProxyPort);
break;
default:
proxy = null;
break;
}
return(proxy?.CreateConnection(address, port));
}
public ConnectionBase CreateConnection(string uri)
{
Socket socket = null;
ConnectionBase connection = null;
try
{
if (this.ConnectionType == ConnectionType.Tcp)
{
#if !DEBUG
{
Regex regex = new Regex(@"(.*?):(.*):(\d*)");
var match = regex.Match(uri);
Uri url = new Uri(string.Format("{0}://{1}:{2}", match.Groups[1], match.Groups[2], match.Groups[3]));
if (url.HostNameType == UriHostNameType.IPv4)
{
var myIpAddress = IPAddress.Parse(url.Host);
if (IPAddress.Any.ToString() == myIpAddress.ToString() ||
IPAddress.Loopback.ToString() == myIpAddress.ToString() ||
IPAddress.Broadcast.ToString() == myIpAddress.ToString())
{
return(null);
}
if (Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("10.0.0.0").GetAddressBytes()) >= 0 &&
Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("10.255.255.255").GetAddressBytes()) <= 0)
{
return(null);
}
if (Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("172.16.0.0").GetAddressBytes()) >= 0 &&
Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("172.31.255.255").GetAddressBytes()) <= 0)
{
return(null);
}
if (Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("127.0.0.0").GetAddressBytes()) >= 0 &&
Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("127.255.255.255").GetAddressBytes()) <= 0)
{
return(null);
}
if (Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("192.168.0.0").GetAddressBytes()) >= 0 &&
Collection.Compare(myIpAddress.GetAddressBytes(), IPAddress.Parse("192.168.255.255").GetAddressBytes()) <= 0)
{
return(null);
}
}
else if (url.HostNameType == UriHostNameType.IPv6)
{
var myIpAddress = IPAddress.Parse(url.Host);
if (IPAddress.IPv6Any.ToString() == myIpAddress.ToString() ||
IPAddress.IPv6Loopback.ToString() == myIpAddress.ToString() ||
IPAddress.IPv6None.ToString() == myIpAddress.ToString())
{
return(null);
}
if (myIpAddress.ToString().ToLower().StartsWith("fe80:"))
{
return(null);
}
}
}
#endif
connection = new TcpConnection(SessionManager.Connect(SessionManager.GetIpEndPoint(uri), new TimeSpan(0, 0, 10)), SessionManager.MaxReceiveCount, _bufferManager);
}
else if (this.ConnectionType == ConnectionType.Socks4Proxy)
{
Regex regex = new Regex(@"(.*?):(.*):(\d*)");
var match = regex.Match(uri);
if (!match.Success)
{
return(null);
}
socket = SessionManager.Connect(SessionManager.GetIpEndPoint(this.ProxyUri), new TimeSpan(0, 0, 10));
var proxy = new Socks4ProxyClient(socket, match.Groups[2].Value, int.Parse(match.Groups[3].Value));
connection = new TcpConnection(proxy.CreateConnection(new TimeSpan(0, 0, 10)), SessionManager.MaxReceiveCount, _bufferManager);
}
else if (this.ConnectionType == ConnectionType.Socks4aProxy)
{
Regex regex = new Regex(@"(.*?):(.*):(\d*)");
var match = regex.Match(uri);
if (!match.Success)
{
return(null);
}
socket = SessionManager.Connect(SessionManager.GetIpEndPoint(this.ProxyUri), new TimeSpan(0, 0, 10));
var proxy = new Socks4aProxyClient(socket, match.Groups[2].Value, int.Parse(match.Groups[3].Value));
connection = new TcpConnection(proxy.CreateConnection(new TimeSpan(0, 0, 10)), SessionManager.MaxReceiveCount, _bufferManager);
}
else if (this.ConnectionType == ConnectionType.Socks5Proxy)
{
Regex regex = new Regex(@"(.*?):(.*):(\d*)");
var match = regex.Match(uri);
if (!match.Success)
{
return(null);
}
socket = SessionManager.Connect(SessionManager.GetIpEndPoint(this.ProxyUri), new TimeSpan(0, 0, 10));
var proxy = new Socks5ProxyClient(socket, match.Groups[2].Value, int.Parse(match.Groups[3].Value));
connection = new TcpConnection(proxy.CreateConnection(new TimeSpan(0, 0, 10)), SessionManager.MaxReceiveCount, _bufferManager);
}
else if (this.ConnectionType == ConnectionType.HttpProxy)
{
Regex regex = new Regex(@"(.*?):(.*):(\d*)");
var match = regex.Match(uri);
if (!match.Success)
{
return(null);
}
socket = SessionManager.Connect(SessionManager.GetIpEndPoint(this.ProxyUri), new TimeSpan(0, 0, 10));
var proxy = new HttpProxyClient(socket, match.Groups[2].Value, int.Parse(match.Groups[3].Value));
connection = new TcpConnection(proxy.CreateConnection(new TimeSpan(0, 0, 10)), SessionManager.MaxReceiveCount, _bufferManager);
}
var secureConnection = new SecureClientConnection(connection, null, _bufferManager);
secureConnection.Connect(new TimeSpan(0, 0, 20));
return(new CompressConnection(secureConnection, SessionManager.MaxReceiveCount, _bufferManager));
}
catch (Exception)
{
if (socket != null)
{
socket.Close();
}
if (connection != null)
{
connection.Dispose();
}
}
return(null);
}