private Socks5ClientRequestReply AssocCore(IPAddress addr, int port)
{
Socks5ClientRequest request = new Socks5ClientRequest {
Command = Socks5Command.UDPMap,
AddressType = Socks5AddressType.IPv4,
DestinationAddress = addr.ToString(),
DestinationPort = (ushort)port
};
_socks_control.Client.Send(request.GetBytes());
byte[] connect_request_reply = new byte[Socks5Packet.MessageMaxLength]; // for everything
_socks_control.Client.Receive(connect_request_reply);
Socks5ClientRequestReply request_reply = new Socks5ClientRequestReply(connect_request_reply);
if (request_reply.ResponseCode != Socks5ResponseCode.OK)
{
throw new Socks5Exception("SOCKS5 server reports: "
+ request_reply.ResponseCode);
}
this._established = true;
this._socks_endpoint = new IPEndPoint(_socks_addr, request_reply.RemoteLocalPort);
this.Client.ReceiveTimeout = 1000;
return(request_reply);
}
protected Socks5ClientRequestReply RemoteConnectTo(String hostname, ushort port)
{
Socks5ClientRequest request = new Socks5ClientRequest {
Command = Socks5Command.TCPConnect,
DestinationAddress = hostname,
DestinationPort = port,
AddressType = Socks5AddressType.Hostname
};
return(RemoteConnectCore(request));
}
protected void RemoteConnectTo(IPAddress addr, ushort port)
{
Socks5ClientRequest request = new Socks5ClientRequest {
Command = Socks5Command.TCPConnect,
DestinationAddress = addr.ToString(),
DestinationPort = port
};
switch (addr.AddressFamily)
{
case AddressFamily.InterNetwork: request.AddressType = Socks5AddressType.IPv4; break;
case AddressFamily.InterNetworkV6: request.AddressType = Socks5AddressType.IPv6; break;
default: throw new Socks5Exception("Supported only IPv4 and IPv6");
}
RemoteConnectCore(request);
}
protected Socks5ClientRequestReply RemoteBindCore(Socks5ClientRequest request)
{
this.Client.Send(request.GetBytes());
byte[] connect_request_reply = new byte[Socks5Packet.MessageMaxLength]; // for everything
this.Client.Receive(connect_request_reply);
Socks5ClientRequestReply request_reply = new Socks5ClientRequestReply(connect_request_reply);
if (request_reply.ResponseCode != Socks5ResponseCode.OK)
{
throw new Socks5Exception("SOCKS5 server reports: "
+ request_reply.ResponseCode);
}
this._established = true;
return(request_reply);
}
protected Socks5ClientRequestReply RemoteConnectCore(Socks5ClientRequest request)
{
this.Client.Send(request.GetBytes());
byte[] connect_request_reply = new byte[Socks5Packet.MessageMaxLength]; // for everything
this.Client.Receive(connect_request_reply);
Socks5ClientRequestReply request_reply = new Socks5ClientRequestReply(connect_request_reply);
if (request_reply.ResponseCode != Socks5ResponseCode.OK)
{
throw new Socks5Exception("SOCKS5 server reports: "
+ request_reply.ResponseCode);
}
//if(request_reply.AddressType != request.AddressType)
// throw new ApplicationException("SOCKS5 reply address type does not match");
this._established = true;
return(request_reply);
}
protected Socks5ClientRequestReply RemoteBind(Socks5AddressType addressType, ushort preferPort)
{
if (addressType != Socks5AddressType.IPv4 && addressType != Socks5AddressType.IPv6)
{
throw new Socks5Exception("You can request only IPv4/IPv6 binding, not hostname");
}
Socks5ClientRequest request = new Socks5ClientRequest {
Command = Socks5Command.TCPBind,
AddressType = addressType,
DestinationPort = preferPort
};
if (addressType == Socks5AddressType.IPv4)
{
request.DestinationAddress = "0.0.0.0";
}
else if (addressType == Socks5AddressType.IPv6)
{
request.DestinationAddress = "::";
}
return(RemoteBindCore(request));
}